Patent Application
20160303890
1. Field of the Present Disclosure
The present disclosure relates to a writing and underline-drawing implement, and, more particularly, to a writing and underline-drawing implement to allow an underline to be drawn in a straight line with improved straightness.
2. Discussion of the Related Art
Conventionally, in order to draw an underline in a straight line, a separate elongate straight object, such as, a ruler may be used.
The convention approach brings the separate elongate straight object onto the note or paper and remove the object after completion of the drawing the line. Thus, this may prevent in-depth studies. Without the separate elongate straight object, this disallows an underline to be drawn in a straight line with improved straightness.
From considerations of the above situations, the present disclosure provides a writing and underline-drawing implement to allow the user to quickly draw an underline in a straight line with improved straightness without the separate elongate straight object.
In an aspect of the present disclosure, there is provided a writing and underline-drawing implement comprising an upper elongate hollow body having an open top portion and a closed bottom portion; a lower elongate hollow body coupled to the upper hollow body, the lower elongate hollow body having a first tip hole; a primary elongate core received in the lower hollow body, the primary elongate core having a first tip portion; a secondary elongate core received in the upper elongate hollow body, the secondary elongate core having the second tip portion, wherein the secondary elongate core has a bottom portion contacting the bottom portion of the upper body; a cap having a second tip hole partially formed in a top portion thereof, the cap being hollow and having an open bottom portion to partially receive and/or passed through by the secondary elongate core, the cap being inserted into the top portion of the upper elongate hollow body, the cap being configured to at least partially move along a length of the upper elongate hollow body; and rotatable guide wheels coupled to the cap at an upper portion of the cap, the cap being disposed between the guide wheels, wherein the secondary elongate core is configured such that the second tip portion passes through and beyond the second tip hole out of the cap when the cap is further inserted in the upper elongate hollow body by a predetermined distance, thereby to reach an underline-drawing mode where when the guide wheels contact and run on a paper, the second tip portion draws a straight line on the paper.
In an aspect of the present disclosure, there is provided a writing and underline-drawing implement comprising an elongate hollow body having an open top portion and a closed bottom portion; an elongate core received in the elongate hollow body, the elongate core having the tip portion; wherein the elongate core has a bottom portion spaced from the bottom portion of the body; a cap having a tip hole partially formed in a top portion thereof, the cap being hollow and having an open bottom portion to partially receive and/or passed through by the elongate core, the cap being inserted into the top portion of the elongate hollow body, the cap being configured to at least partially move along a length of the elongate hollow body; and rotatable guide wheels coupled to the cap at an upper portion of the cap, the cap being disposed between the guide wheels, wherein the elongate core is configured such that the tip portion passes through and beyond the tip hole out of the cap when the cap is further inserted in the elongate hollow body by a predetermined distance, thereby to reach an underline-drawing mode where when the guide wheels contact and run on a paper, the tip portion draws a straight line on the paper.
In accordance with the above writing and underline-drawing implement, following effects may be realized. Both the writing and underline-drawing modes may be realized in a single pen. This may improve in-depth studies due to the fact that it may dispense the separate elongate straight object. Further, the present writing and underline-drawing implement may allow the user to quickly draw an underline in a straight line with improved straightness without the separate elongate straight object.
Hereinafter, embodiments of the present disclosure will be described in details with reference to attached drawings.
Referring to
The upper hollow body 100 and lower hollow body 200 may be coupled to each other at opposing ends thereof to form a single elongate linear body.
The upper hollow body 100 and lower hollow body 200 may have upper and lower inner spaces defined therein, which may be isolated from each other via an isolator 130.
The lower hollow body 200 may have lower and upper portions detachably coupled to each other using a screw coupling. The lower portion of the lower hollow body 200 may taper toward the bottom thereof and may have a first tip hole formed in the bottom to allow entrance and exit of the primary elongate core 300.
In the lower hollow body 200, a primary elongate core 300 such as a ball-pen ink source core may be disposed. Within the lower hollow body 200 and between a protrusion from a bottom of the primary elongate core 300 and the bottom of the lower hollow body 200, an elastic member may be disposed. The elongate-core controller 900 abutting to a top of the primary elongate core 300 may be disposed in an upper portion of the lower hollow body 200.
In one upper side face of the lower hollow body 200, two holes may be vertically-spacedly disposed. The elongate-core controller 900 may have two protrusions horizontally protruding therefrom which may be vertically-spacedly disposed. The two protrusions of the elongate-core controller 900 may vertically move and also move inwardly and outwardly in and from the body in an elastic manner. Thus, when the lower protrusion of the elongate-core controller 900 is engaged with the lower hole of the lower hollow body 200 and the upper protrusion of the elongate-core controller 900 is engaged with the upper hole of the lower hollow body 200, the elongate-core controller 900 may be in a raised state such that the inner elastic member may push upwards the primary elongate core 300 which may be entirely concealed in the lower hollow body 200.
Otherwise, the upper protrusion of the elongate-core controller 900 is pushed down to be disengaged with the upper hole of the lower hollow body 200, and then, the upper protrusion of the elongate-core controller 900 may be engaged with the lower hole of the lower hollow body 200. That is, both the upper and lower protrusions of the elongate-core controller 900 may be engaged with the lower hole of the lower hollow body 200. Thus, the primary elongate core 300 may be lowered down such that the bottom or tip portion of the primary elongate core 300 may extend out of the lower hollow body 200, thereby to achieve a writing mode.
The above configuration related to the primary elongate core 300, lower hollow body 200 and primary elongate core 300 may be conventional. Thus, more details about the same may be omitted herein.
Further, a configuration of the lower hollow body 200 and primary elongate core 300 may be not limited to the above configuration, for example, including the controller 900. For example, the configuration of the lower hollow body 200 and primary elongate core 300 may have any configuration applied to a conventional ball pen, sign-pen, sharp-pencil, pencil, etc. as well-known to the skilled person to the art.
A configuration including the upper hollow body 100, secondary elongate core 400, cap 500, guide wheels 600 etc. may act as an underline-drawing implement. In use, in a writing mode, while the upper hollow body 100 faces upwards, the primary elongate core 300 may be used to write the content. In an underline-drawing mode, while the upper hollow body 100 faces the paper and the lower hollow body 200 faces upward, the secondary elongate core 400 may be used.
On one side face of the upper hollow body 100, the elongate stopper hole 120 may extend vertically. A first stopper protrusion 810 of the stopper 800 may pass through the elongate stopper hole 120 and may vertically move along and in the vertically elongate stopper hole 120.
The upper hollow body 100 may have an open top portion and may receive therein the secondary elongate core 400. As used herein, the inner space of the upper hollow body 110 receiving the secondary elongate core 400 may be referred to as a “secondary elongate core space”. A cap 500 may have a core tip hole (or second tip hole) at a top thereof at a center and may have an open bottom portion. Into the open top portion of the upper hollow body 100, the cap may partially move vertically. As used herein, the inner space of the cap 550 may be referred to as a “cap inner space”.
The secondary elongate core 400 in accordance with a first embodiment, second embodiment and third embodiment may be embodied as a conventional ball pen core or pencil core. The secondary elongate core 400 may be disposed in the secondary elongate core space and cap inner space. By a distance by which the cap 500 is inserted into the secondary elongate core space, a tip portion of the secondary elongate core 400 may pass through and beyond the second tip hole out of the cap 500. The secondary elongate core 400 itself may be fixed in a position. Rather, the cap 500 may vertically move down to allow a tip portion of the secondary elongate core 400 to pass through and beyond the second tip hole out of the cap or vertically move up to allow a tip portion of the secondary elongate core 400 to pass through and beyond the second tip hole into the cap 500.
Distant from the tip portion of the secondary elongate core 400 at a given distance, a second stopper protrusion 430 may be formed on the secondary elongate core 400. A coil spring 700 may be passed through by the secondary elongate core 400. The coil spring 700 may have a bottom thereof contacting the second stopper protrusion 430 and may have a top contacting the top of the cap 500. When the cap 500 is pushed down, the coil spring 700 may be compressed.
The stopper 800 may extend downwardly to be coupled to a bottom end of the cap 500. The stopper 800 may move vertically in a spring-loaded manner. The stopper 800 may have a first stopper protrusion 810 projecting from a bottom end thereof. In one example, as shown in
When the cap 500 move upwards and thus the right-angled inner step of the first stopper protrusion 810 contacts a top edge of the elongate stopper hole 120, the cap 500 may stop there. Thus, normally, the cap 500 may not be removed from the upper body 100. Otherwise, the first stopper protrusion 810 is moved inwardly using a sharp object into the upper hollow body 100, and, at this state, the cap 500 may be pulled upwards to remove the cap 500 from the upper body. In this way, the secondary elongate core 400 may be replaced.
To both opposing side faces of an upper portion of the cap 500, two wheel shafts 610 may be coupled respectively. In this connection, the two wheel shafts 610 may extend in the same straight line or not. To ends of the wheel shafts 610, two guide wheels 600 may be coupled respectively to be rotatable.
Sizes of the guide wheels 600 may be configured such that while the guide wheels 600 contact the paper face, the cap 500 may be further inserted into the upper body by a certain distance, thereby to allow the tip portion of the secondary elongate core 400 to contact the paper face.
A material of the guide wheels 600 may be selected such that the guide wheels 600 may not slip along the paper to disallow drawing of a straight line. In this connection, factors to allow the guide wheels 600 to run in a straight line may include, for example, the wheel material being made of a rubber material with a high friction level; the wheel having an outer portion with small grooves formed along the outer portion to increase a friction force against the paper; an operation of running the wheel while pushing down the cap to increase a friction force against the paper; a suppression of the lateral movement of the wheel; a centering of the tip portion of the secondary core while contacting the paper, etc.
The present underline-drawing implement in accordance with the first embodiment, second embodiment and third embodiment will be described in details below in terms of an operation thereof.
After drawing the underline, the user may not push the guide wheels 600, and thus using the restoration force of the spring 700, the cap 500 may return to its original position. Thus, the tip portion of the secondary elongate core 400 may be inserted back in the inner space in the cap 500.
In the second embodiment, the two tip portions of the two secondary elongate cores 400 respectively may protrude out of the cap concurrently. However, when the upper hollow body 100 is tilted, only one of the two tip portions of the two secondary elongate cores 400 respectively may be used to draw one line.
In this connection, the upper first stopper protrusion 810a is engaged into the upper elongate stopper hole 120a and the lower first stopper protrusion 810b is engaged into the lower elongate stopper hole 120b. In this way, the cap 500 may move upwards and the secondary elongate core 400 may be entirely received in the cap 500 and upper hollow body 100. Otherwise, when both the upper first stopper protrusion 810a and lower first stopper protrusion 810b are engaged into the lower elongate stopper hole 120b, the cap 500 may move down and the tip portion of the secondary elongate core 400 may protrude out of the cap 500. This configuration may be similar to the entrance or exit of the tip portion in the first core as described above.
In accordance with the first embodiment, second embodiment and third embodiment, during drawing an underline, the user needs not pushing the guide wheels 600 down against the paper face.
In accordance with fourth to eleventh embodiments of the present disclosure as will be described in details below, in a wiring mode, the secondary elongate core 400 may be concealed in the secondary elongate core space and cap inner space, and in an underline-drawing mode, the user may push the guide wheels 600 down against the paper face and thus the cap 500 may be further pushed into the secondary elongate core space to enable the second tip portion 420 to protrude via the second tip hole out of the cap 500.
Further, in the fourth embodiment, to a side face of a portion of the secondary elongate core 400 distant downwardly from the second tip portion at a given distance, the second stopper protrusion 430 may be disposed. A coil upper spring 700a may be passed through by the secondary elongate core 400 and may extend between the second stopper protrusion 430 and the cap 500. The coil upper spring 700a may be compressed when the cap 500 is further inserted into the upper body 100. Further, a coil lower spring 700b may be passed through by the secondary elongate core 400 and may extend between the second stopper protrusion 430 and the isolator 130. The coil lower spring 700b may be compressed when the cap 500 is further inserted into the upper body 100. In this connection, the second stopper protrusion 430 and lower spring 700b may act to prevent the secondary elongate core 400 from moving much toward the isolator 130. The second stopper protrusion 430 and upper spring 700a may act to prevent the secondary elongate core 400 from moving out of the cap 500.
The secondary elongate core 400 may be configured that the bottom thereof should not contact the isolator 130 even via maximum insertion of the cap 550 into the upper body 100. Otherwise, when the secondary elongate core 400 contacts the isolator 130, a contacting force of the guide wheels 600 against the paper may be reduced to form a poor straight line because the secondary elongate core 400 is fixed in a position and only the cap 500 move in an elastic manner.
In the fifth embodiment, the secondary elongate core 400 may not contact the isolator 130 due to the lower spring 700b therebetween. Since the bottom hole of the secondary elongate core 400 is fitted with the coupling protrusion 720, the secondary elongate core 400 may be prevented from entirely moving out of the cap 500.
When the secondary elongate core 400 include two secondary elongate cores as shown in
In the above-described fourth embodiment and fifth embodiment, while the secondary elongate core 400 is supported by the spring not to contact the isolator 130, the secondary elongate core 400 may be prevented from entirely moving out of the cap 500. In sixth to tenth embodiments as will be described later, the cap 500 may not be removed from the upper body 100 while the cap 500 may move vertically or may be fixed. Each of the fourth embodiment and fifth embodiment (two embodiments) may be applied to all of the sixth to tenth embodiments (five embodiments). Thus, combinations between the former two embodiments and the latter five embodiment may lead to ten embodiments.
The stopper 800 may extend downwardly to be coupled to a bottom end of the cap 500. The stopper 800 may move vertically in a spring-loaded manner. The stopper 800 may have a first stopper protrusion 810 projecting from a bottom end thereof. In one example, as shown in
When the cap 500 move upwards and thus the right-angled inner step of the first stopper protrusion 810 contacts a top edge of the elongate stopper hole 120, the cap 500 may stop there. Thus, normally, the cap 500 may not be removed from the upper body 100. Otherwise, the first stopper protrusion 810 is moved inwardly using a sharp object into the upper hollow body 100, and, at this state, the cap 500 may be pulled upwards to remove the cap 500 from the upper body. In this way, the secondary elongate core 400 may be replaced.
To both opposing side faces of an upper portion of the cap 500, two wheel shafts 610 may be coupled respectively. In this connection, each of the two wheel shafts 610 may extend in an oblique manner. To ends of the wheel shafts 610, two guide wheels 600 may be coupled respectively to be rotatable.
Sizes of the guide wheels 600 may be configured such that while the guide wheels 600 contact the paper face, the cap 500 may be further inserted into the upper body by a certain distance, thereby to allow the tip portion of the secondary elongate core 400 to contact the paper face.
A material of the guide wheels 600 may be selected such that the guide wheels 600 may not slip along the paper to disallow drawing of a straight line. In this connection, factors to allow the guide wheels 600 to run in a straight line may include, for example, the wheel material being made of a rubber material with a high friction level; the wheel having an outer portion with small grooves formed along the outer portion to increase a friction force against the paper; an operation of running the wheel while pushing down the cap to increase a friction force against the paper; a suppression of the lateral movement of the wheel; a centering of the tip portion of the secondary core while contacting the paper, etc.
In one effective approach to increase a friction force against the paper, a shaft of each of the guide wheels 600 may extend to tilt toward the upper body 100, and each of the guide wheels 600 encounters each of the wheel shafts 610 in a right angle, such that the two guide wheels 600 may be oriented not to be parallel with a length direction of the upper body 100 but be oblique relative to the length direction of the upper body 100. Specifically, a virtual extension line in an orientation direction of each wheel may encounter the upper body as shown in
Further, each of the guide wheels 600 may have a truncated conical shape. The shaft of each of the guide wheels 600 may extend to tilt toward the upper body 100. In this way, the guide wheels 600 run in a straight line with more straightness.
In this connection, the upper first stopper protrusion 810a is engaged into the upper elongate stopper hole 120a and the lower first stopper protrusion 810b is engaged into the lower elongate stopper hole 120b. In this way, the cap 500 may move upwards and the secondary elongate core 400 may be entirely received in the cap 500 and upper hollow body 100. Otherwise, when both the upper first stopper protrusion 810a and lower first stopper protrusion 810b are engaged into the lower elongate stopper hole 120b, the cap 500 may move down and the tip portion of the secondary elongate core 400 may protrude out of the cap 500. This configuration may be similar to the entrance or exit of the tip portion in the first core as described above.
In accordance with this embodiment, whether the second tip portion 420 is in a concealed or exposed state, the second tip portion in the concealed or exposed state may be fixed in a vertical position. Thus, during drawing an underline, the user needs not pushing the guide wheels 600 down against the paper face.
The cap 500 may have the cap protrusion 520 disposed in a ring shape at the bottom end thereof to protrude outwardly. The upper hollow body 100 may have two body protrusions 150 formed on an inner face thereof which may be vertically spaced from each other. Each of the two body protrusions 150 may protrude inwardly in a ring shape. The upper hollow body 100 may have a position limiter protrusion 160 formed on an inner face thereof below the lower body protrusion 150 at a given distance. The position limiter protrusion 160 may protrude inwardly in a ring shape. Via application of an external force above a given degree to the cap protrusion 520 and body protrusions 150, the cap protrusion 520 overcomes the body protrusion 150 partially due to a rounded shape thereof. The position limiter protrusion 160 may stop the movement of the cap protrusion 520 partially due to an angled shape thereof. When the cap protrusion 520 is fitted between in the lower body protrusion 150 and the position limiter protrusion 160, the cap 500 may be fixed in a position while the second tip portion 420 is exposed outwardly. In other words, the cap 500 may move vertically when the cap protrusion 520 is positioned between the two body protrusion 150. In order to draw an underline, the guide wheels 600 is pushed against the paper face and thus the cap protrusion 520 is fitted between in the lower body protrusion 150 and the position limiter protrusion 160, and, hence, the cap 500 may be fixed in a vertical position. During drawing the underline, the user needs not pushing the guide wheels 600 down against the paper face.
When the first stopper protrusion 810 vertically moves while engaged into the upper elongate stopper hole 120a and reaches a top or bottom of the upper elongate stopper hole 120a, the first stopper protrusion 810 may stop there, and, thus, the cap 500 also may stop there. When the first stopper protrusion 810 overcome the upper hollow body 100 and goes downs into the lower elongate stopper hole 120b, the first stopper protrusion 810 may stop there, and, thus, the cap 500 also may stop there.
In other words, partially due to an angled shape of both the bottom and top of the first stopper protrusion 810, when the cap 500 with the wheels is pushed against the paper face, the first stopper protrusion 810 may move down in and along the upper elongate stopper hole 120a, and, then, may stop at a bottom of the upper elongate stopper hole 120a. Via a release of the contacting force, the first stopper protrusion 810 may return to its original position due to the restoring force of the spring. However, the user may further push the cap 500 against the paper from the state in which the first stopper protrusion 810 stops at a bottom of the upper elongate stopper hole 120a while pushing the first stopper protrusion 810 inwardly, the first stopper protrusion 810 may be engaged into the lower elongate stopper hole 120b and thus the first stopper protrusion 810 stops there. In this state and is fixed in a position. In this fixed state, during drawing the underline, the user needs not pushing the guide wheels 600 down against the paper face.
A principal operation of the fourth embodiment to tenth embodiment will be describe as follows:
In a writing mode, a writing module including the lower hollow body 200 and primary elongate core 300 may be used to write the content. In an underline-drawing mode, the upper hollow body 100 may turn upside down and the cap or guide wheels 600 may be pushed up to enable the tip portion of the secondary elongate core 400 to protrude out of the cap though the second tip hole and to contact the paper face. Then, the user may move the wheels horizontally with gripping the upper hollow body 100 and thus the two guide wheels 600 may run along with the tip portion of the secondary elongate core 400 in a straight line, thereby to draw an underline in a straight line.
After drawing the underline, the user may not push the guide wheels 600, and thus using the restoration force of the spring 700, the cap 500 may return to its original position. Thus, the tip portion of the secondary elongate core 400 may be inserted back in the inner space in the cap 500.
In this embodiment, the two tip portions of the two secondary elongate cores 400 respectively may protrude out of the cap concurrently. However, when the upper hollow body 100 is tilted, only one of the two tip portions of the two secondary elongate cores 400 respectively may be used to draw one line.
In one embodiment, the secondary elongate core 400 may include a ball pen core. In one embodiment, the secondary elongate core 400 may include a non-ball type highlighter pen core. Since a tip portion of the non-ball type highlighter pen core may be dried due to a long time exposure to the air, a knock type highlighter pen is used. Specifically, in a non-use mode, the tip point of the non-ball type highlighter pen core is hidden. In a use mode, upon pressing of the core controller, an entrance of the tip point is opened, to allow the tip point of the non-ball type highlighter pen core to be extended out to be exposed. Then, upon further pressing of the core controller, the tip point of the non-ball type highlighter pen core to be retracted in to be concealed and then the entrance of the tip point is closed. Such a knock type highlighter pen is disclosed in details in the above patent document 2 and patent document 3, contents of which are incorporated herein by reference.
The above description is not to be taken in a limiting sense, but is made merely for the purpose of describing the general principles of exemplary embodiments, and many additional embodiments of this disclosure are possible. It is understood that no limitation of the scope of the disclosure is thereby intended. The scope of the disclosure should be determined with reference to the Claims. Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic that is described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
The present disclosure may have following industrial abilities. In accordance with the above writing and underline-drawing implement, both the writing and underline-drawing modes may be realized in a single pen. This may improve in-depth studies due to the fact that it may dispense the separate elongate straight object. Further, the present writing and underline-drawing implement may allow the user to quickly draw an underline in a straight line with improved straightness without the separate elongate straight object.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2014-0057065 | May 2014 | KR | national |
| 10-2014-0169401 | Dec 2014 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2015/004723 | 5/12/2015 | WO | 00 |
