KR102203278B1 - Thickness-controllable Mobile Pen - Google Patents

Abstract

The present invention relates to an electronic pen used in various electronic devices equipped with a touch screen such as a smart phone, a tablet PC, and a notebook, and more particularly, the thickness can be adjusted by supplying external air to a grip part held by a user. It relates to possible electronic pens.
To this end, the electronic pen with adjustable thickness according to the present invention includes a lower pen holder 200 having a grip portion 240 formed thereon and an upper pen holder 300 coupled to an upper portion of the lower pen holder 200, wherein the lower pen holder 200 ) Includes a lower body 210 provided with a touch tip 220 at the lower end and a check valve 260 at the upper portion; An air chamber 250 is formed between the lower body 210 and the grip part 240, and the grip part 240 is formed of the lower body 210 when external air is supplied to the air chamber 250. It includes a soft material part 241 to be changed in thickness to the outer surface, and the upper pen holder 300 is an air supply/discharge operation part 400 for supplying and discharging external air to the air chamber 250 It includes.

Description

Electronic pen with adjustable thickness {Thickness-controllable Mobile Pen}

The present invention relates to an electronic pen used in various electronic devices equipped with a touch screen such as a smart phone, a tablet PC, and a notebook, and more particularly, the thickness can be adjusted by supplying external air to a grip part held by a user. It relates to possible electronic pens.

Electronic devices such as smart phones, tablet PCs, notebook computers, and vehicle navigation devices are equipped with a touch screen so that devices can be operated by touching the screen.

The touch screen is a configuration that enables miniaturization of mobile electronic devices because it is possible to input information by touching a finger or an electronic pen on the screen instead of a separate keyboard or keypad. Has been.

Mobile electronic devices equipped with a touch screen are miniaturized and convenient to carry. However, since the touch screen is also miniaturized, the input button is also miniaturized, and the selection part in many information search sites is also reduced. Mobile electronic devices equipped with pens are also gradually increasing. In addition, a variety of applications that are more convenient when using an electronic pen are being developed, and the range of using the electronic pen is gradually increasing.

As shown in Registered Patent Publication No. 10-1523486 (hereinafter referred to as'prior art'), the electronic pen 40 is typically inserted and stored in a storage unit formed on one side of a mobile electronic device (see Fig. 1(a)). ). Accordingly, the electronic pen 40 is gradually being manufactured to be thinner with the miniaturization of mobile electronic devices.

However, since the conventional electronic pen 40 has a thin thickness (or diameter) as shown in FIG. 1(b), it is inconvenient for a user to hold it in his hand and input information in order to input information on the touch screen 10. , There is a problem that is inconvenient to use even when drawing text or pictures.

Due to such inconvenience in use, many mobile electronic devices are provided with the electronic pen 40, but the range of use thereof is limited, and various applications of the mobile electronic device cannot be used more effectively.

Domestic registered patent No. 10-1523486 (registered on May 20, 2015)

As shown in the prior art, mobile electronic devices are increasingly miniaturized, and accordingly, electronic pens provided in devices are also being manufactured to have a thin thickness. However, the electronic pen manufactured with a thin thickness has a problem in that the user feels inconvenience when using it.

The present invention is to solve the problems of the prior art, and when stored in a mobile electronic device, the thickness thereof is made thin to facilitate storage, and when the user uses it, external air is injected to increase the thickness of the grip part. It is intended to provide an electronic pen with adjustable thickness.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

In order to achieve the above technical problem, the electronic pen 100 capable of adjusting the thickness according to an embodiment of the present invention includes a lower pen holder 200 having a grip part 240 formed thereon and an upper portion coupled to the upper portion of the lower pen holder 200. It includes a pen stand 300. In this case, the lower pen holder 200 includes a lower body 210 having a touch tip 220 at a lower portion and a check valve 260 at an upper portion thereof, and the lower body 210 and An air chamber 250 is formed between the grip portions 240, and the grip portion 240 may change in thickness toward the outer surface of the lower body 210 when external air is supplied to the air chamber 250. A flexible material part 241 is included, and the upper pen holder 300 includes an air supply/discharge operation part 400 for supplying and discharging external air to the air chamber 250.

In addition, the air supply/discharge operation unit 400 includes a cylinder 410 coupled to an upper portion of the lower body 210, a spring 440 provided in the cylinder 410, and the spring ( It may include a piston 430 provided on the upper part of the 440, a piston shaft 440 coupled to the upper part of the piston 430, and a pressing part 460 for operating the piston shaft 440. I can.

In addition, the electronic pen 100 is further provided with an elastic stopper 420, and when supplying external air to the air chamber 250, the pressing unit 460 is within a range limited by the elastic stopper 420. When operating at and discharging the external air supplied to the air chamber 250, the pressing part 460 may be formed to operate to a range in which the elastic stopper 420 is deformed.

In addition, an exhaust protrusion 431 is additionally formed under the piston 400 to open the check valve 260 to discharge the external air supplied to the air chamber 250, and the cylinder An exhaust groove 412 is additionally formed on one side of the 410, and the exhaust groove 412 is formed of the piston 430 when the exhaust protrusion 431 is opening the check valve 260. It may be formed to be located on the side.

In another embodiment, a plurality of fixed gears 413 are formed at equal intervals on the inner surface of the cylinder 410, and a rotation gear 450 provided with a rotation gear protrusion 451 on the upper portion of the piston shaft 440 ) Is formed, and when external air is supplied to the air chamber 250, the rotation gear 450 moves along the fixed gear 413 according to the pressing of the pressurization part 460, and the air chamber 250 When the external air supplied to the device is discharged, the rotation gear 450 may be configured to rotate relative to the fixed gear 413.

In addition, between the fixed gears 413, a rotation gear guide passage 414, a first rotation gear engagement jaw 415, and a second rotation gear engagement jaw 416 are sequentially repeatedly formed, and the air chamber 250 ), after pressing the pressing part 460 to discharge the external air supplied to the ), the rotation gear 450 rotates so that the rotation gear protrusion 451 is caught by the first rotation gear locking protrusion 415, and the After pressing the pressing part 460 while the rotation gear protrusion 451 is caught on the first rotation gear engaging protrusion 415, the rotation gear 450 rotates so that the rotation gear protrusion 451 rotates for a second time. It may be formed to be caught in the gear locking projection 416.

The electronic pen with adjustable thickness according to the present invention adjusts the thickness of the grip part 240 to a thickness convenient for the user, so that the user does not feel uncomfortable when entering information on the touch screen while holding the electronic pen 100. There is an effect that can be used.

In addition, the electronic pen of the present invention can easily solve the inconvenience caused by its small size when in use, making it easier to use the electronic pen in a high-performance small mobile electronic device, and more effectively utilizing various functions of the mobile electronic device. There is an advantage to be able to.

In addition, since the electronic pen of the present invention supplies external air to the air chamber 250 as required by the user, the grip part 240 can be adjusted to a thickness desired by the user, so that all users with various sizes of hands can conveniently use it. There is an advantage to be able to.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a schematic diagram of a conventional electronic pen.
(a) Structure provided in mobile electronic device (b) Cross-sectional view of conventional electronic pen
2 is a cross-sectional view of the electronic pen of the present invention.
3 is an exploded view of the electronic pen of the present invention
4 is an embodiment of the electronic pen grip unit 240.
(a) Grip unit first embodiment (b) Grip unit second embodiment
5 is a detailed view of a fixed gear of a second embodiment of the electronic pen of the present invention
6 is a cross-sectional view of a thickness adjustment step in a second embodiment of the electronic pen of the present invention
(a) Before air injection (b) External air injection (c) External air exhaustion

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components unless specifically stated to the contrary.

The terms used in the present specification 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 indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

2 is a cross-sectional view for explaining the electronic pen 100 of the present invention, and FIG. 3 is an exploded view of an embodiment of the electronic pen 100 of the present invention.

As shown in FIG. 2, the electronic pen 100 shown in the present invention is coupled to the lower pen holder 200 including the grip portion 240 and the upper portion of the lower pen holder 200 to supply air. It includes an upper pen stand 300 equipped with a discharge operation unit 400.

The electronic pen 100 may form the electronic pen 100 by combining the configurations of the lower pen holder 200 and the upper pen holder 300 which are individually formed as in the exploded view shown in FIG. 3.

In another embodiment, in the electronic pen 100, a portion of the lower pen holder 200 and the upper pen holder 300 is integrally formed to form a first partial body (not shown), and the lower pen holder 200 and the upper pen holder ( The rest of the 300) is integrally formed to form a second partial body (not shown), and may be configured by combining the first and second partial bodies (not shown).

As such, the lower pen holder 200 and the upper pen holder 300 are names according to their positions in the electronic pen 100, and the electronic pen 100 may form the electronic pen 100 as shown in FIG. The configuration is sufficient, but in the present invention, an embodiment of the electronic pen 100 shown in FIG. 3 will be described.

The lower pen holder 200 includes a touch tip 220 as shown in FIGS. 2 and 3; Lower body 210; A grip part 240; Air chamber 250; And a check valve 260.

The lower body 210 is a component forming the center of the lower pen holder 200, at least a portion of the lower portion is exposed to the outside, and the touch tip 220 is provided at the lower end of the lower body 210 .

The touch tip 220 is a component for inputting information by contacting the touch screens of various electronic devices, and as shown in FIG. 2, the touch tip 220 is coupled to a groove formed at the bottom of the lower body 210 Can be. In this case, if necessary, a tip spring 230 may be additionally provided in the groove so that the touch tip 220 may be elastically deformed.

The upper side of the lower portion exposed to the outside from the lower body 210 is formed to be at least a part of the space of the air chamber 250. In FIGS. 2 and 3, as an example of a configuration for forming a space forming the air chamber 250, a configuration in which the lower body 210 has a smaller thickness (or thickness) than the exposed lower part is shown, but is not limited thereto. Instead, a configuration capable of representing a part of the space of the air chamber 250 is sufficient.

In addition, an air passage 270 through which external air is supplied or exhausted is formed in the upper portion of the lower body 210. Meanwhile, a spring locking protrusion 280 may be formed around the air passage 270 to support the lower end of the spring 440 to be described later.

Next, the grip part 240 represents a part that the user holds with a finger to use the electronic pen 100, and is formed on the lower pen holder 200 as shown in FIG. 2.

The grip part 240 is configured to surround at least a portion of the lower body 210 that forms the space of the air chamber 250. Through this, as shown in FIG. 2, a portion constituting a space is formed inside the grip part 240, and the space constitutes the air chamber 250.

As shown in FIG. 4, the grip part 240 includes a soft material part 241 that can change its volume when air is supplied or discharged to the air chamber 250. In this case, it is sufficient if the soft material part 241 is made of a soft material such as deformable rubber or polymer.

The soft material part 241 provided in the grip part 240 may be configured such that the soft material part 241 surrounds the outer surface of the lower body 210 as shown in FIG. 4A. This represents an embodiment in which the soft material part 241 itself constitutes the grip part 240.

In another embodiment, the soft material portion 241 may be formed to be spaced apart from the grip portion 240 at a predetermined interval when viewed from the outside, as shown in FIG. 4B. This indicates a configuration in which a portion of the lower body 210 is formed in the grip portion 240 at a predetermined interval, and a soft material portion 241 is formed therebetween. In this embodiment, when viewed from the outside, the soft material portion 241 appears to be spaced apart at a predetermined interval, and seals between the spaced lower bodies 210 formed on the grip part 240 or the spaced lower body 210 ) May be configured to form a space forming the air chamber 250 by being integrally configured in a cylindrical shape. In this embodiment, when air is supplied to the air chamber 250, when viewed from the outside, only the soft material portion 241 that appears to be spaced apart is swollen, resulting in an effect of increasing the thickness of the grip portion 240. I can.

Next, the check valve 260 is formed to open and close the air passage 270 formed on the lower body 260 as shown in FIG. 2.

A space formed between the inside of the grip part 240 and the lower body 210 and a closed space appearing in the closed check valve 260 state appear, and this space is defined as the air chamber 250 in the present invention. .

The check valve 260 is configured to keep the air passage 270 in a closed state normally, and to open the air passage 270 when external air is supplied into the air chamber 250. It would be desirable.

Next, the upper pen holder 300 is coupled to the upper end of the lower pen holder 200 as shown in FIGS. 2 and 3 and includes an air supply/discharge operation unit 400.

The air supply/discharge operation unit 400 includes a cylinder 410, a spring 440 provided in the cylinder 410, a piston 430 positioned above the spring 440, and the piston ( It includes a pressing unit 360 provided on the upper portion of the 430, and the like. Meanwhile, a cylinder outer case 500 may be additionally provided outside the cylinder 410 as necessary. In this case, the cylinder outer case 500 may be made of the same material as the cylinder 410 or a different material, and it may be formed by being integrally formed without distinction from the cylinder 410.

The cylinder 410 is configured to be coupled to the upper end of the lower body 210 as shown in FIGS. 2 and 3, and external air is supplied to the air passage 270 formed on the upper part of the lower body 210. It is configured to pass through.

In this case, the cylinder 410 and the lower body 210 may have a configuration in which the separated cylinder 410 and the lower body 210 are combined as shown in FIG. 3, or the cylinder 410 and the lower body ( 210) may be configured as an integral type, and it is sufficient if the configuration includes the electronic pen 100 as a final product. As an example of a configuration in which the cylinder 410 and the lower body 210 are integrally formed, a partial body (not shown) in which a portion of the cylinder 410 and the lower body 210 is integrally formed is combined to be shown in FIG. There may be an embodiment of finally implementing the lower body 210 and the cylinder 410 as described above.

In the lower inner side of the cylinder 410, the spring 440, whose lower end is supported by the spring locking protrusion 280 formed on the lower body 210, is installed to be elastically deformable.

The upper portion of the cylinder 410 is formed with a pressing portion shaft guide hole 418 so that the pressing portion shaft 362 of the pressing portion 360 can move.

As shown in FIG. 2, the pressing part 460 formed to apply external pressure by pressing by the user by hand is exposed to the outside from the top of the cylinder 410, and is coupled to the lower part of the pressing part 460 The auxiliary shaft 362 is movably coupled to the pressing auxiliary shaft guide 418.

In FIG. 2, the pressurizing shaft guide port 418 is configured to have the function of introducing and outflowing external air. However, a separate external air inlet (not shown) is formed on one side of the cylinder 410 as necessary. It would be possible to do it.

A piston 430 is provided above the spring 440 provided in the cylinder 410.

The piston 430 is configured to move inside the cylinder 410 and supply external air to the air chamber 250, and the external force of the pressing part 460 is applied to the upper portion of the piston 430. A piston shaft 432 is formed so as to be transmitted to the piston 430.

The piston shaft 432 and the pressing part shaft 418 may be coupled to each other to form a fixed shaft, or may be connected to each other in a state in which relative motion is possible, as shown in an embodiment to be described later.

On the other hand, an exhaust protrusion 431 is added to the lower portion of the piston 430 to open the check valve 260 to discharge external air in the air chamber 250 as shown in FIGS. 2 and 3. It may be equipped with.

Through the configuration of the piston 430, the piston 430 is repeatedly operated, and external air is supplied to the air chamber 250 to inflate the grip part 240. In addition, when the pressurization part 460 is pressed and the exhaust protrusion 431 provided under the piston 430 maintains the open state of the check valve 260, the air inside the air chamber 250 Can be discharged to the outside, it is also possible to return the expanded grip portion 240 to the initial state.

Meanwhile, when the piston 430 is moved downward, the check valve 260 may be opened even if it does not contact the exhaust protrusion 431 due to compression of external air.

Accordingly, when external air is supplied to the air chamber 250, the movement distance of the piston 430 is shortened, and when the external air is removed from the air chamber 250, the exhaust protrusion 431 is the check valve The moving distance of the piston 430 may be increased so as to open the check valve 260 in contact with the 260.

In this way, when the moving distance of the piston 430 is different when external air is supplied to the air chamber 250 and when the external air is discharged, the elastic stopper 420 as shown in FIGS. 2 and 3 for stable operation of the piston 430 ) May be additionally provided.

The elastic stopper 420 may be configured by using a spring or pneumatic pressure. In addition, a configuration in which the elastic stopper 420 is deformed and restored by a certain or more external force will be sufficient. In addition, although it is formed on the upper end of the cylinder 410 in FIG. 2, it is not limited thereto as long as the operation can be performed.

When the elastic stopper 420 is formed, when the pressing part 460 comes into contact with the elastic stopper 420, the user can use the pressing part 460 and the elastic stopper 420 by the reaction force of the elastic stopper 420. It may be sensed that 420 is in contact.

Therefore, in order to operate the piston 430, the pressing part 460 is moved before contacting with the elastic stopper 420 or until a contact is sensed, and external air may be supplied to the air chamber 250. . When the external force acting on the pressing part 460 is removed from the above range, the pressing part 460 moves to the initial position by the restoring force of the spring 440 and the elastic stopper 420. By repeating this operation, external air may be supplied to the air chamber 250 as desired. That is, the pressing part 460 can supply air to the air chamber 250 through operation to a range limited by the elastic stopper 420, and the grip part as desired as shown in FIG. 6(b). The thickness of the grip part 240 may be adjusted by expanding the soft material part 241 of the part 240.

In addition, after the pressing portion 460 contacts the elastic stopper 420, an additional external force is applied to deform the elastic stopper 420 so that the exhaust protrusion 431 formed under the piston 430 is formed. By opening the check valve 260, external air supplied to the air chamber 250 may be discharged. That is, the pressurization part 460 can operate to a range in which the elastic stopper 420 deforms to discharge the external air supplied to the air chamber 250, and the expansion as shown in FIG. 6(c) The gripped portion 240 can be returned to the initial thickness.

In order to discharge the external air more stably when the external air supplied to the air chamber 250 is discharged, as needed, as shown in FIGS. 2 and 3, a piston locking protrusion 411 inside the cylinder 410 ) Or an exhaust groove 412 may be additionally formed.

When the piston engaging protrusion 411 reaches a position where the piston 430 discharges the external air supplied to the air chamber 250, that is, the exhaust protrusion 431 of the piston is the check valve 260 When it is in the open state, it would be desirable to be configured to catch the lower portion of the piston 430. Even if a large force is applied to the pressing portion 460 by the piston locking projection 411, the piston 430 does not move below the piston locking projection 411, so that external air inside the air chamber 250 can be removed. At this time, it is only necessary to apply a force to the pressing part 460 without considering the moving distance of the piston 430.

In addition, the exhaust groove 412 is a component for expanding the passage of the exhausted external air. As shown in FIG. 6(c), the exhaust groove 412 is used for exhausting the external air supplied to the air chamber 250. When the protrusion 431 is in a state where the check valve 260 is opened, the exhaust groove 412 is formed on the side of the piston 430 so that external air in the air chamber 250 can be smoothly discharged. It would be desirable to be configured to be.

When the recent electronic pen 100 is stored in an electronic device (not shown), the pressing unit 460 is in a pressed state, and when taken out from an electronic device (not shown) for use, the pressing unit ( 460) is often configured to protrude further outward.

This can be implemented using a fixed gear and a rotating gear type that are widely used in a typical ballpoint pen.

In the present invention, too, a plurality of fixed gears 413 formed at equal intervals in the longitudinal direction of the cylinder may be additionally formed on the inner peripheral surface of the cylinder 410. The fixed gear 413 is installed to be positioned above the piston 430 when the piston 430 is coupled as shown in FIG. 2.

When the fixed gear 413 is formed in the cylinder 410 as shown in FIGS. 2 and 3, a rotating gear 450 provided with a rotating gear protrusion 451 as shown in FIG. 3 is provided together. It is desirable to be.

The rotation gear 450 may be connected to an upper portion of the piston shaft 432, and an upper portion of the rotation gear 450 may be connected to the pressing part shaft 462. At this time, the pressing unit shaft 462 may be provided with a guide protrusion 461 as in the configuration of a conventional ballpoint pen.

Since the fixed gear 413, the rotating gear 450 and the guide protrusion 461 provided with the fixed gear 413, the rotating gear protrusion 451 as described above are widely used in conventional ballpoint pens, a detailed description of the principle of operation thereof will be omitted, It looks at only the fixed gear 413 that is different from the conventional configuration.

In a conventional ballpoint pen, the fixed gear 413 is alternately formed with a rotation gear guide passage 414 and a rotation gear locking jaw between a plurality of fixed gears 413 arranged at equal intervals, and through this configuration, a conventional ballpoint pen Whenever the pressing part is pressed, the rotating gear rotates, and while the rotating gear protrusion alternately passes through the rotating gear locking protrusion and the rotating gear guide passage, protrusion and hiding of the ballpoint pen core are alternately repeated.

However, in the present invention, it is necessary to repeatedly press the pressurizing unit 460 to supply external air to the air chamber 250, and in this repeated pressurization step, the pressurizing unit 460 is not pressed. Shouldn't.

This cannot be solved through a fixed gear structure provided in a conventional ballpoint pen, but in the present invention, in order to solve the problem, the fixed gear 413 is arranged at equal intervals as shown in FIG. The rotation gear guide passage 414, the first rotation gear locking jaw 415 and the second rotation gear locking jaw 416 are sequentially repeatedly formed between 413).

The rotation gear guide passage 414 is configured so that the rotation gear protrusion 451 of the rotation gear 450 can move without limitation, and the first and second rotation gear locking projections 415 and 416 have the rotation gear It is configured so that the protrusion 451 is caught.

In addition, it is necessary that the lower end of the fixed gear 413 is formed at an appropriate position in accordance with the movement of the rotating gear protrusion 451.

When operating the pressing unit 460 to supply external air to the air chamber 250, for example, when operating within a range in which the pressing unit 460 contacts the elastic stopper 420, the It is preferable that the rotation gear protrusion 451 moving together with the pressing part 460 is configured so that it does not pass through the lower end of the fixed gear 413. And, when operating the pressing unit 460 to discharge the external air of the air chamber 250, for example, the pressing unit 460 deforms the elastic stopper 420, and the piston 430 When the lower portion of) is operated to contact the piston stopper 411, it is preferable that the rotating gear protrusion 451 passes through the lower end of the fixed gear 413.

When the fixed gear 413 is formed as above, and when external air is supplied to the air chamber 250, the rotating gear protrusion 451 is guided by the fixed gear 413 without rotation, and the air chamber 250 When the external air supplied to is discharged, the rotating gear protrusion 451 passes through the lower end of the fixed gear 413, and accordingly, the rotating gear 450 rotates so that the rotating gear protrusion 451 is rotated. It is caught by the first rotation gear locking projection 415 formed next to the gear guide passage 414.

A method of using the electronic pen 100 configured as described above will be described below.

In a state in which the electronic pen 100 is stored in an electronic device (not shown), the pressing portion 460 of the electronic pen 100 is pressed while being caught by the second rotation gear locking protrusion 416.

First, in order to use the electronic pen 100, the pressing part 460 of the electronic pen 100 is pressed. Then, the rotation gear protrusion 451 passes through the lower end of the fixed gear 413, and accordingly, the rotation gear 450 rotates so that the rotation gear protrusion 451 becomes the second rotation gear locking protrusion 416 ) Is moved to the guide passage 414 formed next to the rotation gear. Then, since the rotation gear protrusion 451 can move upward without any limitation in the rotation gear guide passage 414, the pressing part 460 is upper part by the restoring force of the spring 440 and the elastic stopper 420. 6(a), the electronic pen 100 can be easily separated from the electronic device (not shown) by holding the protruding pressing part 460.

Next, external air is supplied to the air chamber 250 by repeatedly operating the pressing unit 460 in order to adjust the grip unit 240 of an appropriate thickness. As described above, when operating the pressurization unit 460 within the range of supplying external air to the air chamber 250, for example, within the range limited by the elastic stopper 420, the rotation gear 450 Since the rotation gear protrusion 451 of is configured to be guided in the rotation gear guide passage 414 of the fixed gear 413, it is possible to repeat the upward and downward movements without rotation. Therefore, the pressurization unit 460 can operate without being caught even if pressure is repeatedly applied, and supply air to the interior of the air chamber 250 by the piston 430 that moves together, As shown, it is possible to change the thickness of the grip part 240 as desired by the user.

Next, after using the electronic pen 100, in order to store the electronic pen 100 again in an electronic device (not shown), the external air supplied to the air chamber 250 is discharged to initialize the thickness of the grip part 240. It is necessary to return to the state.

To this end, by pressing the pressing part 460 with an external force sufficient to deform the elastic stopper 420 to open the check valve 260 to the exhaust protrusion 431 formed under the piston 430 External air in the air chamber 250 is discharged. Through this, the electronic pen 100 has an initial thickness of the grip part 240 so that the electronic pen 100 can be coupled to an electronic device (not shown).

At this time, when the force acting on the pressing part 460 is removed, the rotation gear protrusion 451 past the lower end of the fixed gear 413 is rotated and formed next to the rotation gear guide passage 414 It is caught in the first rotation gear locking jaw (415). This is the same as the operation in the conventional ballpoint pen discussed above.

Finally, after inserting the electronic pen 100 into the storage unit of the electronic device (not shown), the pressing unit 460 is pressed to store the electronic pen 100 in the electronic device (not shown).

Even at this time, when the force acting on the pressing part 460 is removed, the rotation gear protrusion 451 passes through the lower end of the fixed gear 413 on which the first rotation gear locking protrusion 415 is formed, and thus the The rotation gear protrusion 451 becomes a rotation gear protrusion 451 and is caught by the second rotation gear locking projection 416 formed next to the first rotation gear locking projection 415. That is, the electronic pen 100 is in an initial state stored in an electronic device (not shown).

Through the above steps, the user can easily use and store the electronic pen 100 of the present invention capable of changing the thickness of the grip part 240.

The present invention is not limited to the above-described embodiments, and the scope of application thereof is diverse, as well as anyone with ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible.

100: electronic pen 200: lower pen holder 210: lower body
220: touch tip 230: tip support elastic body 240: grip portion
241: soft material part 250: air chamber 260: check valve 270: air passage 280: spring locking jaw 300: upper pen stand 400: air supply/discharge operation part
410: cylinder 411: piston locking projection 412: exhaust groove 413: fixed gear
414: rotation gear guide passage 415: first rotation gear locking jaw
416: second rotation gear locking jaw 417: external air entrance
418: pressure support shaft guide 420: elastic stopper 430: piston
431: exhaust protrusion 432: piston shaft 440: spring
450: rotating gear 451: rotating gear protrusion 460: pressing part
461: guide protrusion 462: pressure support shaft 500: cylinder outer case

Claims (6)

In the electronic pen including a lower pen holder 200 having a grip portion 240 formed thereon and an upper pen holder 300 coupled to an upper portion of the lower pen holder 200,
The lower pen holder 200 includes a lower body 210 having a touch tip 220 disposed at a lower portion and a check valve 260 disposed at an upper portion thereof; An air chamber 250 is formed between the lower body 210 and the grip part 240;
The grip part 240 includes a soft material part 241 whose thickness can be changed to the outer surface of the lower body 210 when external air is supplied to the air chamber 250;
The upper pen holder 300 includes an air supply/discharge operation unit 400 for supplying and discharging external air to the air chamber 250,
The air supply/discharge operation unit 400 includes a piston 430; A piston shaft 432 coupled to an upper portion of the piston 430; And a pressing part 460 for operating the piston shaft 432,
It is characterized in that it is configured to supply external air to the air chamber 250 through the check valve 260 or to discharge external air stored in the air chamber 250 according to the operation of the piston 430 Electronic pen with adjustable thickness.
The method of claim 1,
The air supply/discharge operation unit 400 is coupled to an upper portion of the lower body 210 and the cylinder 410 having the piston 430 provided therein; And a spring 440 provided at a lower portion of the piston 430.
The method of claim 1,
The electronic pen is further provided with an elastic stopper 420,
When external air is supplied to the air chamber 250, the pressing unit 460 operates to a range limited by the elastic stopper 420,
When discharging the external air supplied to the air chamber 250, the pressurizing unit 460 operates to a range in which the elastic stopper 420 is deformed.
The method of claim 2,
An exhaust protrusion 431 is additionally formed under the piston 430 to open the check valve 260 to discharge the external air supplied to the air chamber 250,
An exhaust groove 412 is additionally formed on one side of the cylinder 410,
The exhaust groove 412 is formed to be positioned on a side surface of the piston 430 when the exhaust protrusion 431 is open to the check valve 260.
The method of claim 2,
A plurality of fixed gears 413 are formed at equal intervals on the inner surface of the cylinder 410, and a rotating gear 450 having a rotating gear protrusion 451 is formed on the upper portion of the piston shaft 432, , When external air is supplied to the air chamber 250, the rotation gear 450 moves along the fixed gear 413 according to the pressing of the pressurization part 460, and is supplied to the air chamber 250. When discharging external air, the rotating gear 450 is configured to rotate relative to the fixed gear 413.
The method of claim 5,
Between the fixed gears 413, a rotation gear guide passage 414, a first rotation gear locking jaw 415, and a second rotation gear locking jaw 416 are sequentially repeatedly formed, and supplied to the air chamber 250 After pressing the pressurizing part 460 to exhaust the external air, the rotation gear 450 rotates so that the rotation gear protrusion 451 is caught by the first rotation gear locking projection 415,
After pressing the pressing part 460 once more while the rotation gear protrusion 451 is caught on the first rotation gear locking protrusion 415, the rotation gear 450 rotates to protrude the first rotation gear. The electronic pen with adjustable thickness, characterized in that 451 is formed so as to be caught on the second rotation gear locking projection 416.

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