WO2023048475A1

WO2023048475A1 - Touch pen having anti-separation function for protective cap

Info

Publication number: WO2023048475A1
Application number: PCT/KR2022/014156
Authority: WO
Inventors: 박소영
Original assignee: 박소영
Priority date: 2021-09-23
Filing date: 2022-09-22
Publication date: 2023-03-30
Also published as: KR102370211B1

Abstract

The present invention relates to a touch pen having an anti-separation function for a protective cap. In particular, the touch pen is characterized by comprising a main body, a pen tip, a pen tip-fixing tool, and a protective cap, wherein the touch pen has: a fixing means for anti-separation, which prevents the protective cap from being separated or detached from the pen tip-fixing tool, between an outer surface of the pen tip-fixing tool and an inner surface of the protective cap; and/or a contact area/frictional force increasing means for increasing a contact area and frictional force between contact surfaces to prevent the protective cap and the pen tip-fixing tool from being separated from each other.

Description

Touch pen with protection cap separation prevention function

The present invention relates to a touch pen having a protective cap separation prevention function, and more particularly, to prevent the pen tip located at the tip of the touch pen from being worn out in the process of inputting by touching a touch screen such as a smartphone or tablet PC with a touch pen In addition, to improve the touch, a conical or cone-shaped protective cap made of various soft materials is installed on the outer circumferential surface of the pen tip fixture made of synthetic resin, but the outer surface of the pen tip fixture and the inner structure of the protective cap are improved to make the protective cap It relates to a touch pen having a function to prevent separation of a protective cap invented to completely prevent separation or detachment from a pen tip fixture.

Recently, touch screens have been used in various types of electronic devices.

Although the development of touch screens began a relatively long time ago, it is only recently that they have been put into practical use and used widely.

A touch screen is a visual display device used to display an image, and also an input device/terminal capable of operating a device equipped with a touch screen by touching an image displayed on the screen.

Since the touch screen can operate electronic devices by touching images, it can be used intuitively, and the device is compact because there is no need to install a separate input device/terminal.

Due to these characteristics, touch screens are almost indispensably installed in portable mobile electronic devices.

Smartphones, tablet PCs, etc., which have been used recently, are typical examples of portable devices equipped with touch screens.

The touch screen can be divided into a touch screen called a pressure-sensitive or resistive type and a capacitive type touch screen according to the operating principle, but most of the recently used touch screens are capacitive touch screens. , The capacitive touch screen has the advantage that an input signal can be generated using a conductor such as a finger, and a soft and sensitive touch is possible.

In order to input by touching the touch screen as described above, a touch pen is mainly used, and when continuously used, the pen tip of the touch pen is worn out, and the purchase cost is economically borne by purchasing a new pen tip and replacing it.

Therefore, when using a touch pen, a protective cap is inserted on the outer circumferential surface of the body of the pen tip for use.

The protective cap is formed in a conical shape, and has a structure in which an opening is formed on one side to insert a pen tip.

The protective cap is used by fitting it to the outer circumferential surface of the pen tip body, and when the protective cap is worn out and the touch feeling is lost, replace it with a new one.

However, since the conventional protective cap is formed to have a conical shape with an elastic material and is used by combining with the outer circumferential surface of the pen tip body, it is often separated from the body of the pen tip at will during use, and it does not adhere closely, resulting in a decrease in touch. there is.

In addition, if a soft rubber material is used as the material of the protective cap, the frictional force is higher than that of the product, but friction between the protective cap and the screen during writing may cause a small space with the pen tip inside it, so people who use the touch pen are confident A gap may occur between the end of the protective cap visible to the eye and the position where the letters are written, and this part reduces the sophistication of the work. Therefore, there is a growing demand for a structure in which the soft protective cap can be closely attached to the inner pen tip.

In addition, when the soft protective cap is continuously used, durability is weak due to the nature of the material, so it is easily worn by frictional force generated in the process of continuously touching the touch screen, and there is a problem in that it must be frequently replaced with a new one.

Accordingly, a 'pen tip for a touch pen' has been developed as a way to solve the above problems in the past, and Korean Patent Registration No. 10-2203350 has been disclosed.

This is a synthetic resin material with a cone-shaped opening on one side and a pen tip storage chamber integrally formed inside to insert a pen tip, and a protective cap with a coating layer formed on the outer circumferential surface of the body. The pen tip of the touch pen is inserted into the body. In the pen tip inserted into, the touch protrusions are arranged in a circular shape around the front end of the protective cap and have a configuration integrally formed.

However, the conventional pen tip for a touch pen having such a configuration has an effect of improving a sense of touch and reducing noise generated during contact, but the protective cap coupled in the form of wrapping the outside of the body including the pen tip simply fixes the step. It only has a form hanging on one side of the body through a hole, but it does not have a separate fixing or close contact area and means for increasing frictional force, so the frictional force generated between the touch screen and the protective cap in the process of touching the touch screen is large. However, when a strong external force is applied to the protective cap from the outside, the protective cap is easily separated or separated from the body.

The present invention has been devised to solve these conventional problems, and prevents the pen tip located at the tip of the touch pen from being worn out in the process of inputting by touching a touch screen such as a smartphone or tablet PC with a touch pen. In order to improve the touch feeling, a cone or cone-shaped protective cap made of various soft materials such as elastomer, rubber, silicone, urethane is installed on the outer circumferential surface of the pen tip fixture made of synthetic resin, and the outer surface of the pen tip fixture and the protection Various forms of fixing means for preventing separation and means for increasing contact area and frictional force are further provided between the inner surface of the cap, so that the protective cap itself can be completely prevented from being separated or separated from the pen tip fixture, and also touches the touch screen to Its purpose is to provide a touch pen with a function to prevent break-away of the protective cap, which can significantly improve the durability of the protective cap while maintaining an appropriate frictional force when writing or drawing, providing excellent touch and reducing friction noise. there is.

Other detailed objects of the present invention will be clearly identified and understood by experts or researchers in the art through the specific contents described below.

To achieve the above object of the present invention, the touch pen having a protective cap separation prevention function of the present invention includes a main body having a hollow pipe shape; a pen tip detachably installed on the lower end of the main body; a pen tip fixture detachably coupled to the lower end of the main body in a form surrounding the pen tip; and a conical or cone-shaped protective cap detachably coupled to the outside of the pen tip fixture, wherein the protective cap is separated and separated from the pen tip fixture between the outer surface of the pen tip fixture and the inner surface of the protective cap. It is characterized in that any one or both means of a fixing means for preventing separation or a contact area and frictional force increasing means for preventing mutual separation by increasing the contact area and frictional force between the contact surfaces are further provided at the same time.

At this time, in the first embodiment of the fixing means for preventing separation, a plurality of locking grooves or locking protrusions are opposed to each other at the same position in the horizontal direction on the outer surface of the upper part of the pen tip fixture and the inner surface of the upper part of the protective cap at predetermined intervals. It is characterized by being formed to be.

In addition, in the second embodiment of the fixing means for preventing separation, a ring-shaped locking groove or a ring-shaped locking protrusion is formed at the same position in the horizontal direction on the outer surface of the upper part of the pen tip fixture and the inner surface of the upper part of the protective cap to face each other. to be characterized

In addition, in the third embodiment of the fixing means for preventing separation, a plurality of serrated locking grooves or serrated locking protrusions are provided at the same position at a predetermined interval in the vertical direction on the entire outer surface of the pen tip fixture and the entire inner surface of the protective cap. Characterized in that they are formed to face each other.

* On the other hand, in the first embodiment of the contact area and frictional force increasing means, a plurality of vertical frictional force increasing projections or vertical frictional force increasing protrusions are spaced at predetermined intervals and angles in the inclined longitudinal direction from the outer surface of the pen tip fixture and the inner surface of the protective cap. It is characterized in that the frictional force increasing grooves are formed to face each other.

In addition, in the second embodiment of the contact area and frictional force increasing means, a plurality of horizontal frictional force increasing protrusions or horizontal frictional force increasing grooves are located at the same position at a predetermined interval in the vertical direction on the outer surface of the pen tip fixture and the inner surface of the protective cap. It is characterized in that formed opposite to each other.

In addition, in the third embodiment of the contact area and frictional force increasing means, the plurality of vertical frictional force increasing protrusions or vertical frictional force increasing grooves on the outer surface of the pen tip fixture and the inner surface of the protective cap, and the plurality of horizontal frictional force increasing It is characterized in that the projections or horizontal frictional force increasing grooves are formed at the same time to have a mutual lattice shape.

In addition, in the fourth embodiment of the contact area and frictional force increasing means, the plurality of vertical frictional force increasing protrusions or vertical frictional force increasing grooves on the outer surface of the pen tip fixture and the inner surface of the protective cap, and the plurality of horizontal frictional force increasing Protrusions or horizontal frictional force increasing grooves are formed at the same time, but the plurality of horizontal frictional force increasing projections or horizontal frictional force increasing grooves are formed at positions staggered in the vertical direction between the plurality of vertical frictional force increasing projections or vertical frictional force increasing grooves. It is characterized in that the ladder of is made to have a combined shape in succession to each other in the horizontal direction.

In addition, in the fifth embodiment of the contact area and frictional force increasing means, a plurality of comb-like frictional force increasing protrusions or comb-like frictional force are spaced at predetermined intervals and angles in the left and right inclined directions on the outer surface of the pen tip fixture and the inner surface of the protective cap, respectively. It is characterized in that the increase grooves are formed inclined in directions opposite to each other to have a shape in which a plurality of rhombuses are continuously coupled in the up, down, left and right directions.

As described above, according to the touch pen having the protection cap separation prevention function of the present invention, the pen tip located at the tip of the touch pen is prevented from being worn out in the process of inputting by touching the touch screen of a smartphone or tablet PC with the touch pen. In addition, a cone or cone-shaped protective cap molded from various soft materials such as elastomer, rubber, silicone, urethane, etc. is installed on the outer circumferential surface of the pen tip fixture made of synthetic resin to improve the touch, but the outer surface of the pen tip fixture and the protection By further providing various forms of fixing means for preventing separation and means for increasing contact area and frictional force between the inner surfaces of the cap, it is possible to completely prevent the protective cap itself from being separated or separated from the pen tip fixture, and the protective cap has various soft properties. Since it is formed of a material, proper frictional force is maintained when touching the touch screen while writing or drawing, so the touch feeling is excellent, friction noise can be reduced, and at the same time, the durability of the protective cap can be improved, greatly extending its lifespan. In particular, it is a very useful invention, such as greatly increasing the marketability and reliability of the product itself, and the convenience of use and replacement.

Other effects of the present invention will be clearly identified and understood by experts or researchers in the art through the specific details described below or during the process of implementing the present invention.

1 is an exploded perspective view of a touch pen to which an embodiment of the present invention is applied;

2 (a) to (c) are enlarged partial cross-sectional views of main parts for explaining first to third embodiments of a fixing means for preventing detachment among touch pens to which the present invention is applied.

3(a) to (e) are enlarged partial cross-sectional views of main parts for explaining the first to fifth embodiments of means for increasing the contact area and frictional force among the touch pens to which the present invention is applied.

Since the present invention can have various changes and various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, it should be understood that this is not intended to limit the present invention to the specific disclosed form, and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features or It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

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 to which this invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, the operating state according to each configuration, including a preferred embodiment according to the present invention, will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a touch pen to which an embodiment of the present invention is applied, and FIG. 2 (a) to (c) describes first to third embodiments of fixing means for preventing separation among touch pens to which the present invention is applied. 3 (a) to (e) are enlarged cross-sectional views of the main part for explaining the first to fifth embodiments of the contact area and frictional force increasing means among the touch pens to which the present invention is applied. is shown.

According to this, the touch pen having the protection cap separation prevention function of the present invention, as shown in (a) to (e) of FIGS. 1 to 3, the pen tip 20 and the pen tip fixture at the lower end of the main body 10 (30) is detachably coupled, and the outer surface of the pen tip fixture (30) in configuring a known touch screen touch pen in which a protective cap (40) is detachably coupled to the outside of the pen tip fixture (30). And between the inner surface of the protective cap 40, any one or both means of the fixing means 50 for preventing separation having a predetermined shape or the means for increasing the contact area and friction force 60 are further provided at the same time, so that the protective cap 40 ) itself as a major technical component to completely prevent separation or separation from the pen tip fixture 30.

At this time, the main body 10 among the components of a known touch pen has a hollow pipe shape by injection molding using synthetic resin like a general ballpoint pen.

In addition, the pen tip 20 is formed to have a predetermined shape using a metal having conductivity, and has a form detachably installed at the lower end of the main body 10.

In addition, the pen tip fixture 30 is basically formed to have a cone or cone shape with one side opened using synthetic resin, but inside, the pen tip storage room, which is omitted from writing the reference numeral so that the pen tip 20 can be inserted, is integrated. It has a form formed of, and has a form coupled detachably to the lower end of the main body 10 in a form surrounding the pen tip 20.

In addition, the protective cap 40 is formed to have a cone or cone shape, and is detachably coupled to the outside of the pen tip fixture 30 to protect the pen tip 20 and the pen tip fixture 30. Do it.

At this time, the protective cap 40 is molded using various soft materials such as elastomer, rubber, silicone, urethane, etc. having good durability, so that the soft protective cap 40 adheres closely to the pen tip 20 inside. People who use the touch pen to which the invention is applied do not have a gap between the end of the protective cap 40 that they see and the position where letters are written or pictures are drawn, so they can smoothly perform sophisticated work.

Such a protective cap 40 is provided with a plurality of consumables, and when damage or abnormality such as wear of a part in contact with the touch screen due to long-term use occurs, you can replace it with a new one.

On the other hand, in the present invention, among the known touch pens having the above configuration, the protective cap 40 is fixed to the pen tip fixture 30 by the engaging action between the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40. ) Further provided with any one of a separation prevention fixing means 50 preventing separation and separation from each other and a contact area and frictional force increasing means 60 preventing mutual separation by increasing the contact friction between the mutual contact surfaces The main technical component is to provide or further provide the above two means (ie, the fixing means 50 for preventing separation and the means for increasing the contact area and frictional force 60) at the same time.

At this time, various forms and shapes can be presented as the fixing means 50 for preventing separation.

As a first embodiment of the separation preventing fixing means 50, in the present invention, as shown in FIG. 2 (a), the upper outer surface of the pen tip fixture 30 and the upper inner surface of the protective cap 40 are horizontally An example is presented in which a plurality of locking grooves 51 or locking protrusions 52 are formed to face each other at the same location at predetermined intervals along the direction.

Here, the plurality of locking grooves 51 or the locking protrusions 52 presented as the first embodiment of the separation preventing fixing means 50 may be formed in various shapes such as hemispherical, semi-elliptical, triangular, square, hexagonal, etc. In addition, even if it has any of the above shapes, there is no problem in engaging with each other by being coupled to each other.

In addition, since the protective cap 40 is molded of various soft materials such as elastomer, rubber, silicone, urethane, etc., and has elasticity and elasticity by itself, the plurality of locking grooves 51 or locking protrusions 52 are formed on the pen tip. Mutual coupling is possible regardless of whether it is formed on either the outer surface of the fixture 30 or the inner surface of the protective cap 40.

As described above, the plurality of locking grooves 51 or the locking protrusions 52 are set horizontally on the outer surface of the upper part of the pen tip fixture 30 or the inner surface of the upper part of the protective cap 40 as the fixing means 50 for preventing separation. When the protective cap 40 is coupled to the outside of the pen tip fixture 30 in a state in which the protective cap 40 is formed to face each other at the same position at a predetermined interval along the direction, the upper side of the pen tip fixture 30 The upper inner surface of the protective cap 40 or the upper part of the pen tip fixture 30 so that the hemispherical locking protrusions 52 protruding from the outer surface of the outer surface or the inner surface of the upper end of the protective cap 40 are opposed to each other. Corresponding to the material characteristics of the protective cap 40, the protective cap 40 is fixedly installed on the outer surface of the pen tip fixture 30, since each of the hemispherical locking grooves 51 formed on the outer surface is elastically fitted and caught. keep the state

Therefore, unless the user forcibly separates the protective cap 40, which is molded of various soft materials such as elastomer, rubber, silicone, urethane, etc. It is not automatically separated or separated from the outer surface of the pen tip fixture 30 by the catching action generated by the plurality of catching protrusions 52 inserted into, and maintains a fixed installed form.

In addition, in the present invention, as a second embodiment of the fixing means 50 for preventing separation, as shown in (b) of FIG. 2, the upper outer surface of the pen tip fixture 30 and the upper inner surface of the protective cap 40 are horizontally An example in which the ring-shaped locking groove 53 or the ring-shaped locking protrusion 54 are formed to face each other at the same position in the direction is presented.

Here, the ring-shaped locking groove 53 or the ring-shaped locking protrusion 54 presented as the second embodiment of the separation preventing fixing means 50 may also be formed in various shapes such as hemispherical, semi-elliptical, triangular, square, hexagonal, etc. In addition, even if it has any of the above shapes, there is no problem in engaging with each other by being coupled to each other.

In addition, since the protection cap 40 is molded of various soft materials such as elastomer, rubber, silicone, urethane, etc., and has elasticity and elasticity in itself, the ring-shaped locking groove 53 or ring-shaped locking protrusion 54 can be used as the pen tip. Mutual coupling is possible regardless of whether it is formed on either the outer surface of the fixture 30 or the inner surface of the protective cap 40.

As described above, the ring-shaped locking groove 53 or the ring-shaped locking protrusion 54 having a specific longitudinal section is used as the separation preventing fixing means 50 on the outer surface of the upper part of the pen tip fixture 30 or the protective cap 40. When the protective cap 40 is coupled to the outside of the pen tip fixture 30 in a state where the upper inner surface is formed to face the opposite side at the same position in the horizontal direction, respectively, the pen tip fixture 30 The upper inner surface of the protective cap 40 or the pen tip fixture 30 so that the ring-shaped protrusions 54 protruding from the outer surface of the upper part or the inner surface of the upper part of the protective cap 40 to have a hemispherical shape are opposed to each other. Since the upper outer surface of each of the longitudinal sections has a hemispherical shape and is elastically fitted and caught in the ring-shaped locking groove 53, the protective cap 40 is fixed to the outer surface of the pen tip fixture 30. Maintain a state.

Therefore, unless the user forcibly separates the protective cap 40, which is molded from various soft materials such as elastomer, rubber, silicone, urethane, etc. and has strong elasticity and elasticity, the ring-shaped locking groove having a hemispherical cross section ( 53), it is not automatically separated or separated from the outer surface of the pen tip fixture 30 by the engaging operation of the ring-shaped protrusion 54, which is elastically hooked, and maintains a fixedly installed form.

At this time, the plurality of locking grooves 51 or locking protrusions 52 and the ring-shaped locking grooves 53 or ring-shaped locking protrusions 54 presented as the first and second embodiments of the fixing means 50 for preventing separation In the drawing, an example in which only one line is formed in the horizontal direction is presented, but it is not limited thereto, and a plurality of lines (for example, 2 to 4 lines) may be formed to increase mutual interlocking action.

In addition, in the present invention, as a third embodiment of the fixing means 50 for preventing separation, as shown in (c) of FIG. 2, the entire upper outer surface of the pen tip fixture 30 and the entire upper inner surface of the protective cap 40 Here is an example in which a plurality of sawtooth locking grooves 55 or sawtooth locking protrusions 56 are formed to face each other at the same position at a predetermined interval in the vertical direction.

Here, since the protective cap 40 is molded of various soft materials such as elastomer, rubber, silicone, urethane, etc., and has elasticity and elasticity itself, the plurality of sawtooth-shaped locking grooves 55 or sawtooth-shaped locking protrusions 56 Even if formed on either side of the outer surface of the pen tip fixture 30 or the inner surface of the protective cap 40, mutual coupling is possible regardless.

As described above, the plurality of sawtooth-shaped locking grooves 55 or sawtooth-shaped locking protrusions 56 having a serrated cross section as the fixing means 50 for preventing separation as described above are used to protect the entire upper outer surface of the pen tip fixture 30 or the protection When the protective cap 40 is coupled to the outside of the pen tip fixture 30 in a state in which they are formed at the same position at a predetermined interval in the vertical direction on the entire upper inner surface of the cap 40, the The protective cap ( 40) is elastically fitted into and caught in the plurality of sawtooth-shaped locking grooves 55 formed on the inner surface of the upper part of the pen tip fixture or the outer surface of the upper part of the pen tip fixture 30, so that the protective cap 40 is attached to the pen tip fixture 30 It remains fixedly installed on the outer surface of the

Therefore, unless the user forcibly separates the protection cap 40, which is formed of various soft materials such as elastomer, rubber, silicone, urethane, etc. and has strong elasticity and elasticity, the plurality of teeth having a sawtooth shape on the longitudinal section The locking operation of the plurality of toothed locking protrusions 56 inserted into the mold locking groove 55 and resiliently hooked does not automatically separate or separate from the outer surface of the pen tip fixture 30, and maintains a fixed installed form. do.

At this time, the fixing means 50 for preventing separation is not limited to the first to third embodiments presented above, and it is possible to present another embodiment, for example, a part of the upper outer surface of the pen tip fixture 30 And a thread is formed on a portion of the inner surface of the upper portion of the protective cap 40, respectively, so that the protective cap 40 can be detachably installed on the outside of the pen tip fixture 30 through screwing.

In practice, among the first to third embodiments presented as the fixing means 50 for preventing separation, the separation preventing effect of preventing the protective cap 40 from separating from the pen tip fixture 30 is higher than that of the first embodiment. The second embodiment is larger, and the third embodiment is larger than the second embodiment.

On the other hand, the contact area and frictional force provided between the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 to increase the frictional force of the mutual contact part separately or simultaneously with the separation preventing fixing means 50 The augmentation means 60 can also be presented in various forms and shapes.

As a first embodiment of the contact area and frictional force increasing means 60, in the present invention, as shown in FIG. 3 (a), the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 have respective shapes Correspondingly, an example in which a plurality of vertical frictional force increasing protrusions 61 or vertical frictional force increasing grooves 62 are formed to face each other at predetermined intervals and angles in the curved longitudinal direction is presented.

As described above, as the contact area and frictional force increasing means 60, a plurality of vertical frictional force increasing protrusions 61 or vertical frictional force increasing grooves 62 are formed between the outer surface of the pen tip fixture 30 and the protective cap 40. When the protective cap 40 is coupled to the outside of the pen tip fixture 30 in a state in which the inner surface is formed to face each other at a predetermined interval and angle in the curved longitudinal direction, the pen tip fixture ( 30) formed on the inner surface of the protective cap 40 or the outer surface of the pen tip fixture 30 so that the plurality of vertical friction increasing protrusions 61 protruding from the outer surface of the protective cap 40 face each other. Each of the vertical frictional force increasing grooves 62 has a shape that is fitted elastically.

Therefore, the contact area between the inner surface of the protective cap 40 molded with various soft materials such as elastomer, rubber, silicone, urethane, etc. and having strong elasticity and elasticity and the outer surface of the pen tip fixture 30 injection-molded with synthetic resin, etc. The plurality of vertical frictional force increasing protrusions having a mutually coupled state in addition to their own surface contact surface (ie, a mutually surface contact area between the inner surface of the protective cap 40 and the outer surface of the pen tip fixture 30) 61 and the plurality of vertical frictional force increasing grooves 62, the contact frictional force between the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 is greatly increased. It is possible to prevent the protective cap 40 from being automatically separated or separated from the pen tip fixture 30 to a greater extent.

In addition, in the present invention, as a second embodiment of the contact area and frictional force increasing means 60, as shown in (b) of FIG. 3, the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 are vertically An example in which a plurality of horizontal frictional force increasing protrusions 63 or horizontal frictional force increasing grooves 64 are formed to face each other at the same position at a predetermined interval is presented.

As described above, as the contact area and frictional force increasing means 60, a plurality of horizontal frictional force increasing protrusions 63 or horizontal frictional force increasing grooves 64 are formed on the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40. When the protective cap 40 is coupled to the outside of the pen tip fixture 30 in a state in which the protective cap 40 is formed to face each other at the same position at a predetermined interval in the vertical direction, the pen tip fixture 30 The horizontal friction increasing groove formed on the inner surface of the protective cap 40 or the outer surface of the pen tip fixture 30 so that the plurality of horizontal friction increasing protrusions 63 protruding from the outer surface or the inner surface of the protective cap 40 face each other. (64), each having a shape that is elastically fitted.

Therefore, the contact area between the inner surface of the protective cap 40 molded with various soft materials such as elastomer, rubber, silicone, urethane, etc. and having strong elasticity and elasticity and the outer surface of the pen tip fixture 30 injection-molded with synthetic resin, etc. In addition to its own surface contact surface, the pen tip fixture ( 30), the contact friction force between the outer surface of the protective cap 40 and the inner surface of the protective cap 40 can be greatly increased by the line contact area generated between them, so that the protective cap 40 is automatically separated from the pen tip fixture 30 or It can be prevented to a greater extent than that.

In addition, in the present invention, as a third embodiment of the contact area and frictional force increasing means 60, as shown in FIG. 3 (c), the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 The plurality of vertical frictional force increasing protrusions 61 or vertical frictional force increasing grooves 62 presented in the example, and the plurality of horizontal frictional force increasing projections 63 or horizontal frictional force increasing grooves 64 presented in the second embodiment ) is presented as an example of simultaneously forming mutual lattice shapes.

As described above, as the contact area and frictional force increasing means 60, the plurality of vertical frictional force increasing protrusions 61 or vertical frictional force increasing grooves 62 and the plurality of horizontal frictional force increasing projections 63 or horizontal frictional force increasing The protective cap 40 is formed in a state where the grooves 64 have a grid shape and are formed to face each other at the same position on the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40, opposite to each other. When coupled to the outside of the pen tip fixture 30, the plurality of vertical frictional force increasing protrusions 61 protruding from the outer surface of the pen tip fixture 30 or the inner surface of the protective cap 40 in a lattice shape, and The vertical frictional force increasing groove 62 formed in a lattice shape on the inner surface of the protective cap 40 or the outer surface of the pen tip fixture 30 so that the horizontal frictional force increasing protrusions 63 are opposed to each other and the plurality of horizontal frictional force increase Each of the grooves 64 has a shape that is fitted elastically.

Therefore, the contact area between the inner surface of the protective cap 40 molded with various soft materials such as elastomer, rubber, silicone, urethane, etc. and having strong elasticity and elasticity and the outer surface of the pen tip fixture 30 injection-molded with synthetic resin, etc. The plurality of vertical frictional force increasing protrusions 61 and vertical frictional force increasing grooves 62 having a form coupled to each other in a lattice shape in addition to their surface contact surfaces, the plurality of horizontal frictional force increasing projections 63, and Since it is greatly increased by the plurality of lattice-shaped line contact areas formed between the horizontal frictional force increasing grooves 64, the contact frictional force between the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 is generated between them It can be increased as much as the grid-shaped line contact area, so that the protective cap 40 is automatically separated or separated from the pen tip fixture 30.

In addition, in the present invention, as a fourth embodiment of the contact area and frictional force increasing means 60, as shown in FIG. 3 (d), the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 The plurality of vertical frictional force increasing protrusions 61 or vertical frictional force increasing grooves 62 presented in the example, and the plurality of horizontal frictional force increasing projections 63 or horizontal frictional force increasing grooves 64 presented in the second embodiment ) are formed at the same time, but the plurality of horizontal frictional force increasing protrusions 63 or horizontal frictional force increasing grooves 64 presented in the second embodiment are the plurality of vertical frictional force increasing projections presented in the first embodiment ( 61) or vertical frictional force increasing grooves 62 formed at staggered positions in the upper and lower portions so that a plurality of ladders having horizontal bars (footboards) at different positions have a shape in which a plurality of ladders are continuously coupled to each other in the horizontal direction Example is presenting

As described above, as the contact area and frictional force increasing means 60, the plurality of vertical frictional force increasing protrusions 61 or vertical frictional force increasing grooves 62 and the plurality of horizontal frictional force increasing projections 63 or horizontal frictional force increasing The protective cap ( 40) is coupled to the outside of the pen tip fixture 30, the plurality of vertical frictional force increase The vertical frictional force increasing groove ( 62) and each of the plurality of horizontal frictional force increasing grooves 64 has a form of being elastically fitted.

Therefore, the contact area between the inner surface of the protective cap 40 molded with various soft materials such as elastomer, rubber, silicone, urethane, etc. and having strong elasticity and elasticity and the outer surface of the pen tip fixture 30 injection-molded with synthetic resin, etc. The plurality of vertical frictional force increasing protrusions 61 and vertical frictional force increasing grooves 62 having a shape in which a plurality of ladders are continuously coupled to each other in the horizontal direction in addition to their surface contact surfaces, and the plurality of horizontal frictional force Contact between the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 is increased as much as the plurality of ladder-shaped line contact areas formed between the increasing protrusion 63 and the horizontal frictional force increasing groove 64. The frictional force can be increased as much as the trapezoidal line contact area generated between them, so that the protective cap 40 can be prevented from being automatically separated or separated from the pen tip fixture 30 by that much.

In addition, in the present invention, as shown in (e) of FIG. 3 as a fifth embodiment of the contact area and frictional force increasing means 60, the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 are left and right, respectively. A plurality of comb-like frictional force increasing protrusions 65 or a plurality of comb-like frictional force increasing grooves 66 are formed opposite to each other at intervals and angles determined in the direction to form a plurality of comb-like frictional force increasing projections 65 or a plurality of An example is presented in which a plurality of rhombuses are continuously coupled in the up, down, left and right directions between the comb-shaped frictional force increasing grooves 66.

As described above, as the contact area and frictional force increasing means 60, a plurality of comb-like frictional force increasing protrusions 65 or a plurality of comb-like frictional force increasing grooves 66 are opposed to each other at predetermined intervals and angles in the left and right inclined directions, respectively. In a state in which a plurality of rhombuses are continuously coupled in the up, down, left and right directions between a plurality of comb-like frictional force increasing protrusions 65 or a plurality of comb-like frictional force increasing grooves 66 by forming in a direction, the protective cap When 40 is coupled to the outside of the pen tip fixture 30, a plurality of diamonds are continuously coupled in the up, down, left and right directions on the outer surface of the pen tip fixture 30 or the inner surface of the protective cap 40. The plurality of comb-shaped frictional force increasing protrusions 65 having a form in which a plurality of diamonds are continuously coupled in the up, down, left and right directions on the inner surface of the protective cap 40 or the outer surface of the pen tip fixture 30 so that they face each other on opposite sides Each of the plurality of comb-shaped frictional force increasing grooves 66 has a form of being elastically fitted.

Therefore, the contact area between the inner surface of the protective cap 40 molded with various soft materials such as elastomer, rubber, silicone, urethane, etc. and having strong elasticity and elasticity and the outer surface of the pen tip fixture 30 injection-molded with synthetic resin, etc. Line contact formed between a plurality of comb-like frictional force increasing protrusions 65 and a plurality of comb-like frictional force increasing grooves 66 having a form in which a plurality of rhombuses are continuously coupled in the up, down, left and right directions in addition to their surface contact surfaces. Since the area is greatly increased, the contact frictional force between the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40 can be further increased by a plurality of rhombic line contact areas generated between them, thereby increasing the protective cap (40) can be prevented from being automatically separated or separated from the pen tip fixture (30) to a greater extent.

In addition, among the first to fifth embodiments presented as the contact area and frictional force increasing means 60 above, generated so that they are not separated between the inner surface of the protective cap 40 and the outer surface of the pen tip fixture 30 The frictional force increasing effect is greater in the second embodiment than in the first embodiment, and is greater in the third to fifth embodiments than in the second embodiment, corresponding to each coupling shape (ie, lattice, ladder, and rhombic coupling). appear.

On the other hand, although not presented in the description so far, when the protective cap 40 is molded using various soft materials such as elastomer, rubber, silicone, urethane, etc., the tip is molded into a pointed shape such as a sharp pen tip (20 ) can be inserted into the inside. In this way, if the tip of the protective cap 40 is formed into a sharp shape and the tip of the pen tip 20 is inserted into it, the pen tip inside the protective cap 40 The ends of (20) will remain in close contact.

Therefore, when writing or drawing on the touch screen using the touch pen to which the present invention is applied, a gap almost occurs between the tip of the protective cap 40 having a pointed shape and the touch position of the touch screen Therefore, more precise and sophisticated work can be performed smoothly.

In addition, if necessary, the protective cap 40 may be attached to the outer surface of the pen tip fixture 30 using an adhesive or the like, or may be integrally molded through double injection.

However, in this case, when the protective cap 40 is worn, not only the protective cap 40 but also the pen tip fixture 30 must be exchanged together, so only the protective cap 40 is exchanged in terms of economy and waste of resources. There is a risk of not being more efficient.

As described above, in the present invention, by further providing a fixing means for preventing separation and a means for increasing the contact area and friction force having various shapes between the outer surface of the pen tip fixture 30 and the inner surface of the protective cap 40, The protective cap 40 itself can completely prevent separation or separation from the pen tip fixture 30, and since the protective cap 40 is formed of various soft materials such as elastomer, rubber, silicone, urethane, etc. When writing or drawing while touching the screen, an appropriate frictional force is maintained to give an excellent touch feeling, as well as greatly reduce friction noise, etc., and also significantly improve the durability of the protective cap 40. It is possible to greatly extend the lifespan, and in particular, there is an effect of greatly increasing the marketability and reliability of the product itself, and the convenience of use and replacement.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary knowledge in the art will find the spirit of the present invention described in the claims to be described later. And it will be understood that the present invention can be variously modified and changed without departing from the technical scope.

Claims

main body; a pen tip installed on the lower end of the main body; A pen tip fixture coupled to the lower end of the main body in a form surrounding the pen tip; In the touch pen composed of; and a protective cap coupled to the outside of the pen tip fixture,

Between the outer surface of the pen tip fixture and the inner surface of the protective cap, one or both means of fixing means for preventing separation or means for increasing contact area and frictional force are further provided at the same time,

The fixing means for preventing separation,

Forming a plurality of locking grooves or locking protrusions facing each other at the same position in the horizontal direction on the outer surface of the upper part of the pen tip fixture and the inner surface of the upper part of the protective cap at predetermined intervals,

The contact area and frictional force increasing means,

A plurality of vertical frictional force increasing protrusions or vertical frictional force increasing grooves are formed to face each other at predetermined intervals and angles in the longitudinal direction on the outer surface of the pen tip fixture and the inner surface of the protective cap,

Between the outer surface of the pen tip fixture and the inner surface of the protective cap, the fixing means for preventing separation is closer to the lower end of the main body than the contact area and frictional force increasing means.
main body; a pen tip installed on the lower end of the main body; A pen tip fixture coupled to the lower end of the main body in a form surrounding the pen tip; In the touch pen composed of; and a protective cap coupled to the outside of the pen tip fixture,

Between the outer surface of the pen tip fixture and the inner surface of the protective cap, one or both means of fixing means for preventing separation or means for increasing contact area and frictional force are further provided at the same time,

The fixing means for preventing separation,

Forming a ring-shaped locking groove or a ring-shaped locking protrusion at the same position in the horizontal direction on the outer surface of the upper part of the pen tip fixture and the inner surface of the upper part of the protective cap to face each other,

The contact area and frictional force increasing means,

A plurality of horizontal frictional force increasing protrusions or horizontal frictional force increasing grooves are formed to face each other at the same position at a predetermined interval in the vertical direction on the outer surface of the pen tip fixture and the inner surface of the protective cap,

Between the outer surface of the pen tip fixture and the inner surface of the protective cap, the fixing means for preventing separation is closer to the lower end of the main body than the contact area and frictional force increasing means.
main body; a pen tip installed on the lower end of the main body; A pen tip fixture coupled to the lower end of the main body in a form surrounding the pen tip; In the touch pen composed of; and a protective cap coupled to the outside of the pen tip fixture,

Between the outer surface of the pen tip fixture and the inner surface of the protective cap, any one of a fixing means for preventing separation or a means for increasing the contact area and frictional force is further provided,

As the fixing means for preventing separation,

A plurality of serrated locking grooves or serrated locking protrusions are formed to face each other at the same position at a predetermined interval in the vertical direction on the entire outer surface of the pen tip fixture and the entire inner surface of the protective cap,

As the contact area and frictional force increasing means,

A plurality of comb-like frictional force increasing projections or comb-like frictional force increasing grooves are formed inclined in opposite directions at intervals and angles determined in the left and right inclined directions on the outer surface of the pen tip fixture and the inner surface of the protective cap, respectively, so that a plurality of diamonds A touch pen having a protective cap separation prevention function, characterized in that it has a continuously combined shape in the up, down, left and right directions.