WO2020004728A1

WO2020004728A1 - Writing instrument

Info

Publication number: WO2020004728A1
Application number: PCT/KR2018/013979
Authority: WO
Inventors: 최태민
Original assignee: (주)올버튼
Priority date: 2018-06-29
Filing date: 2018-11-15
Publication date: 2020-01-02
Also published as: JP2020001366A; KR20200002461A

Abstract

The present invention relates to a writing instrument. The writing instrument comprises: a nib assembly which includes a pen lead portion, a nib portion including a nib and inserted into the pen lead portion to be coupled thereto, and a spring fitted around the nib portion; and an inner stopper assembly including a stopper body which has a penetrating hole and an inner stopper for opening or closing the penetrating hole, the nib portion being inserted into the penetrating hole so that the nib is located in the stopper body, wherein the spring includes a first portion wound in a conical shape and a second portion connected to the first portion, and the stopper body includes the body and a spring insertion portion positioned on the rear surface of the body and having an inverted conical shape, wherein the first portion of the spring is inserted into the spring insertion portion and thus coupled thereto.

Description

Writing utensils

The present invention relates to a writing instrument, and more particularly, to a writing instrument having a sealing function for preventing volatilization of ink.

Writing instruments can be classified into a type using a solid core for writing charcoal or black charcoal, such as a pencil, and a type using an aqueous or oily liquid as a writing ink, such as a ballpoint pen, a highlighter, or a fountain pen.

A writing instrument using ink discharges ink to the outside through a nib including a fine diameter discharge port, and ink is bound on a paper such as paper according to the trajectory of the nib moved by a user so that writing such as writing or drawing is performed. do.

However, since the ink used for writing instruments is volatile, the ink is lost when exposed to the outside for a predetermined time, and the ink on the tip of the pen is cured, and the ink is not discharged from the nib. There is a problem.

Therefore, the liquid writing instrument using ink is provided with a separate case stopper so that when the user uses the liquid writing instrument, the case stopper is opened so that the writing operation can be performed normally. Minimize contact with ink and air on the surface.

However, in general, the case stopper is composed of separate parts separated from the writing instruments, so there is a high risk of loss.

In addition, when the case stopper is lost, the pen nib must be exposed to the air, and thus, even though a large amount of ink remains due to vaporization of the ink, a problem arises in that the writing instrument cannot be used.

Prior art literature

Utility Model Publication No. 20-0330916 (Announcement Date: October 22, 2003, Name of Design: Writing Instruments with Integrated Lid)

The technical problem to be achieved by the present invention is to increase the service life of writing instruments by minimizing the volatilization of the ink.

Another technical problem to be achieved by the present invention is to reduce the risk of breakage of writing instruments.

Another technical problem to be achieved by the present invention is to increase the convenience of a user using a writing instrument.

A writing instrument according to an aspect of the present invention for solving the above problems is pen nib portion, pen nib assembly having a nib inserted into the pen core portion, having a nib and a spring inserted into the nib portion, and penetrating An inner stopper assembly having an inner stopper for opening and closing a hole and the through hole, the pen tip being inserted into the through hole and having a stopper body in which the pen tip is positioned, wherein the spring is wound in a conical shape; And a second portion connected to a first portion, wherein the stopper body is located at the rear of the torso body and the torso body, has a reverse cone shape, and includes a spring insertion portion to which the first portion of the spring is inserted and coupled. do.

The inner stopper assembly may further include a connection line having one side connected to the inner stopper of the stopper body, and the nib assembly may further include a coupling ring positioned between the spring and the pen core and connected to the other side of the connection line. Can be.

The connection line includes a coupling portion coupled to the inner stopper and a coupling portion extending from the coupling portion, the body main body includes a first connection line fixing groove in which the coupling portion is located, and the coupling ring comprises the first coupling ring. It may include a second connecting line fixing groove which is positioned on the same straight line as the first connecting line fixing groove and the connecting portion is located.

The first connection line fixing groove of the body main body may include a first portion having the same width and a second portion connected to the first portion and having a width increasing according to the position regardless of the position.

The inner stopper may include a connecting line fixing protrusion to which the connecting portion of the connecting line is inserted and fixed to the outer surface.

The connection line may further include a connection line stopper connected to the connection portion and positioned between the coupling ring and the pen core portion.

The width of the connecting line stopper may be larger than the width of the connecting portion.

The connecting line may be made of a material having elasticity.

The stopper body may further include a stopper engaging projection projecting from the front of the trunk body about the through hole, and the inner stopper projecting from the inner surface corresponding to the stopper engaging projection. It may include.

The plug coupling protrusion may have an inclined surface that increases in thickness toward the front of the trunk body.

The hole covering protrusion may have a side surface inclined toward an inner surface of the inner stopper.

The pen core, the nib assembly and the inner stopper assembly may further include a case.

The case includes a position fixing protrusion extending in the longitudinal direction on the inner surface, the body body, the coupling ring and the pen core are each located on the same straight line, and include a position fixing groove into which the fixing protrusion is inserted. Can be.

According to this feature, the spring portion of the conical spring and the spring insertion portion of the reverse conical shape, the pressure of the spring acts on all sides of the spring insertion portion, the adhesion between the spring insertion portion and the nib inserted therein is Increases.

Therefore, the amount of air flowing into the through-hole of the body main body is greatly reduced, and the degree of air contact of the nib located in the through-hole is greatly reduced, so that the amount of evaporation of the ink on the pen tip is reduced, and the life span of the writing instrument is extended. It increases the user's writing feeling.

In addition, due to the increase in the width of the connection line fixing groove of the connection body according to the position, the margin of the operation of the connection line is increased, the pressure or resistance applied to the connection line is greatly reduced, reducing the risk of disconnection of the connection line, the expansion and folding of The operation is smooth, and the writing instrument prevents malfunction and improves the feel of the writing instrument.

When the closing cap of the inner cap is inserted into the insertion hole of the trunk body and the closing operation of the inner cap is performed, the sealing force between the inner cap and the cap engaging projection is prevented because the inner surface of the cap engaging projection and the inner cap are in line contact. Increases.

Thus, the inflow of air into the trunk body is reduced to reduce the amount of ink evaporation of the nib located within the trunk body.

In addition, when the nib assembly and the inner stopper assembly are assembled to the case, a position fixing groove located in the nib assembly and the inner stopper assembly is inserted into the position fixing protrusion formed in the case, thereby limiting the rotational operation of the case or the nib assembly. Therefore, disconnection or twisting of the connection line due to the rotation of the case or the nib assembly is prevented, and fixing of the writing instrument is prevented.

In addition, since the inner stopper is attached to the stopper body to automatically open and close the inner stopper according to the operating state of the writing instrument, there is no need for a separate case stopper to minimize evaporation of ink.

Therefore, the convenience of the user is improved, and the manufacturing cost for separately manufacturing the case cap is reduced.

1 is an exploded perspective view of a writing instrument according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the pen core portion shown in FIG. 1. FIG.

3 is an exploded perspective view of the nib, spring and inner closure assembly shown in FIG.

Figure 4 is a perspective view of the stopper body of the writing instrument according to an embodiment of the present invention, a perspective view when the inner stopper is opened.

5 and 6 are perspective views when the connection line is coupled to the stopper body in the writing instrument according to an embodiment of the present invention, Figure 5 is a view when the inner plug is closed and Figure 6 is a view when the inner plug is open. .

7 and 8 are perspective views when the nib assembly and the inner stopper assembly are assembled in the writing instrument according to the embodiment of the present invention, FIG. 7 is a view when the inner stopper is closed, and FIG. 8 is the inner stopper opened. It is drawing of time

9 and 10 are perspective views of a writing instrument according to an embodiment of the present invention, Figure 9 is a view when the nib does not protrude to the outside and Figure 10 is a view when the pen nib protrudes out due to the operation of the handle. .

11 is a view showing the direction of the force applied to the body body by a spring in the writing instrument according to an embodiment of the present invention,

12 (a) to (c) is a view showing a sequence of assembling the connecting line to the inner stopper in the writing instrument according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention; In describing the present invention, if it is determined that adding specific descriptions of techniques or configurations already known in the art may make the gist of the present invention unclear, some of them will be omitted from the detailed description. In addition, terms used in the present specification are terms used to properly express the embodiments of the present invention, which may vary according to related persons or customs in the art. Therefore, the definitions of the terms should be made based on the contents throughout the specification.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the meaning of “comprising” specifies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

Hereinafter, a writing instrument according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the writing instrument 100 according to the present embodiment includes a case 110 and a nib assembly 120 and a nib to which a handle 140 having a handle 141 located in the case 110 is coupled. An inner stopper assembly 130 coupled with the assembly 120.

In the writing instrument 100 of the present example, for convenience of description, a portion where the handle 140 is located is referred to as a rear portion, and an opposite side of the rear portion is referred to as a front portion.

The case 110 has a long cylindrical shape having an empty space having a polygonal cross-sectional shape such as a circle, a square, or a triangle, so that the pen core assembly 120 and the inner stopper assembly 130 are inserted therein.

In this example, the case 110 has a position fixing protrusion P110 extending in the longitudinal direction of the case 110 on the inner side.

At this time, the rear surface of the case 110 is open, and the pen core assembly 120 and the inner stopper assembly 130 are inserted into the case 110, and the assembly 120 and the inside of the case 110 are inserted into the case 110. The assembly operation of the plug assembly 130 is made.

On the other hand, in the front portion of the case 110, which is located on the opposite side of the rear side, a nib protruding hole H110 through which the pen nib PT protrudes is located. Therefore, the front part of the case 110 has a structure in which all except the pen tip protrusion hole H110 are blocked.

In addition, the outer surface of the case 110 is exposed to the outside through the nib protruding hole (H110) by operating by pressing the handle 141 coupled to the nib assembly 120 to use the writing instrument 100 of the present example. A fixing groove (not shown) for fixing the position of the pen tip PT may be located.

The case 110 is made of at least one material such as plastic or metal material. In addition, it may be made of different materials according to the part of the case 110.

The diameter of the case 110 may be determined according to the structure and size of the pen core assembly 120 and the inner stopper assembly 130 inserted therein.

The handle 141 may have a structure in which an operation state is changed according to a user's pressing operation to expose the nib PT to the outside or to place the exposed nib PT into the case 110.

The handle portion 140 of the present example is composed of a toggle type handle portion in which the operating state is reversed every time the user presses the handle 141, but is not limited thereto, and the pen side PT may be used for use of the writing instrument 100 according to the user's operation. ) To protrude to the outside of the pen tip protrusion hole (H110) and to the reverse may be made of a variety of structures to be located inside the case (110).

Since the handle 140 is already known, a detailed description thereof will be omitted.

The pen nib assembly 120, as already described, engages with the inner closure assembly 130 and is inserted into the void inside the case 110.

As shown in FIG. 1, the pen core assembly 120 includes a pen core 122 containing ink and having a rod shape such as an elongated cylindrical shape, at one end of the pen core 122 (eg, at the front end). And a spring 126 inserted into the nib 124 and the nib 124 coupled thereto.

As shown in FIG. 2, the nib 122 includes a nib 1221 in which a sponge or the like that absorbs ink is embedded, and first and second casings which are coupled to each other and in which a nib 1221 is inserted. And a

portion

1222 and 1223.

Although the pen core 1221 has a long rod shape having a circular cross-sectional shape, the pen core 1221 may have various shapes in the shapes of the first and

second case portions

1222 and 1223 to which the pen core 1221 is inserted.

The first and

second case parts

1222 and 1223 are coupled to each other, and have a rod shape having an empty space in the center for insertion of the nib 1221.

At this time, the first case portion 1222 has a position fixing groove G122 located along its extension direction (ie, the longitudinal direction) on the outer surface of the main body.

The position fixing groove G122 is a portion into which a part of the position fixing protrusion P110 located in the case 110 is inserted and coupled.

Therefore, the first and

second case portions

1222 and 1223 coupled to each other are stably moved forward and backward in the extending direction of the position fixing protrusion P110 of the case 110, and the rotation operation of the case 110 is performed. It prevents the damage of the inner stopper assembly 130 due to the rotation operation of the case 110.

In addition, the front surface of the body of the first case portion 1222, that is, the portion that is coupled with the nib 124, the engaging projection P1222, into which the pen nib 124 is inserted and coupled, protrudes and is located on the opposite side of the front surface. The rear surface is opened to allow insertion of the second case part 1223.

At this time, the diameter of the coupling protrusion P1222 is smaller than the diameter of the first case portion 1222, and has an insertion hole H1222 in the center portion through the internal space of the first case portion 1222.

Therefore, the pen nib 124 is inserted through the insertion hole H1222, so that the nib 124 is positioned in the nib 1221 inserted into the nib 122 so that ink moves toward the nib 1221. To lose.

The front surface of the body of the second case portion 1223 is open and the rear surface is blocked. At this time, the body rear part of the second case part 1223 has a multi-stage structure in which the diameter decreases toward the rear side for the coupling operation with the handle part 140.

The second case part 1223 also includes a coupling protrusion P1223 protruding from the front side, and the insertion operation of the second case part 1223 toward the rear side of the opened first case part 1222 is performed.

Coupling protrusion P1223 of second case portion 1223 also has a hole connected to the inner space of second case portion 1223 in the center. In this case, the diameter of the hole formed in the coupling protrusion P1223 is the same as the diameter of the inner space of the second case part 1223 so that the pen nib 1221 can be stably inserted into the second case part 1223.

Thus, when the second case part 1223 is inserted into the first case part 1222 and the first case part 1222 and the second case part 1223 are coupled to each other, the first and second case parts 1222 1223, the internal spaces communicate with each other.

Therefore, the pen nibs 1221 are positioned in the internal spaces of the first and

second case portions

1222 and 1223 coupled to each other.

In addition, since the front surface of the first case portion 1222 and the rear surface of the second case portion 1223 are blocked, the nibs 1221 inserted into the internal spaces of the first and

case portions

1222 and 1223 are first and second. 2 is stably positioned in the internal spaces of the

case parts

1222 and 1223.

As shown in FIG. 3, the nib 124 includes a nib 1242 where the nib PT is positioned at an end thereof, and a coupling ring 1242 inserted into the nib 1242.

The pen nib 1241 is inserted into the first case portion 1222 through the insertion hole H1222 positioned in the front portion of the first case portion 1222 to fix the position.

At this time, the outer diameter of the pen nib 1241 is smaller than the inner diameter of the insertion hole H1222, so that the pen nib 1241 is smoothly inserted into the insertion hole H1222 of the coupling protrusion P1222.

Referring to FIG. 3, the coupling ring 1242 is a ring into which the nib 1242 inserted into the engagement protrusion P1222 is inserted, and an insertion hole H1242 into which the central nib 1242 is inserted. It has a donut shape provided.

At this time, since the inner diameter of the coupling ring 1242 is smaller than the outer diameter of the coupling protrusion P1222, the coupling ring 1242 inserted into the nib 1242 is restricted by the coupling protrusion P1222.

Therefore, the coupling protrusion P1222 is positioned between the first case portion 1222 and the coupling ring 1242, so that the coupling ring 1242 is spaced apart from the first case portion 1222 by the height of the protrusion of the coupling protrusion P1222. It is.

The outer surface of the coupling ring 1242 is provided with a position fixing groove (G124) located between a pair of connecting line fixing groove (G1242) and the connecting line fixing groove (G1242) facing each other on the opposite side.

At this time, the position fixing groove G124 is positioned on the same virtual straight line (hereinafter, the same virtual straight line is referred to as 'the same straight line') of the position fixing groove G122 of the first case part 1222, and a pair of It may be located in the center between the connecting line fixing groove (G1242).

The spring 126 may be a coil spring in which a coil is wound as an elastic member.

The spring 126 is compressed by the operation of the handle 140 by the user or the compressed state is released by the restoring force, the case 110 which is the initial position of the nib (PT) protruding into the nib protrusion hole (H110) Allow it to return inside.

The spring 126 in this example is inserted into the nib 1242 and positioned between the coupling ring 1242 and the inner closure assembly 130, as shown in FIG.

This spring 126 has a first portion 1261 located on the front side side (ie, the inner stopper assembly 130) and a second portion 1262 seamlessly connected to the first portion 1261. .

The first portion 1261 has a coil wound in a conical form (or funnel form), and one end of the first portion 1261 in which the coil is disconnected is in contact with the inner plug assembly 130.

Accordingly, the diameter of the first portion 1261 increases toward the front end portion.

The second portion 1262 is wound on one end with a coil connected to the other end of the first portion 1261 without a break, and the other end of the second portion 1261 on which the coil is disconnected is connected to the tip portion 124 of the nib 124. It is in contact with an adjacent surface (eg, the front surface) of the coupling ring 1242 inserted in the nib 1242. Accordingly, the spring 124 is positioned between the inner stopper assembly 130 and the coupling ring 1242 to maintain a compressed or non-compressed state.

The second portion 1262 of this spring 126 increases in diameter toward the rear end.

At this time, the winding spacing of the first portion 1261 is much smaller than the winding spacing of the second portion 1262, but the winding spacing in each of the first portion 1261 and the second portion 1262 is along the winding direction, respectively. It can be constant.

(Please let me know if there is an effect due to the difference in winding intervals)

Therefore, when the pen core portion 122 and the nib 124, which are coupled to each other by the operation of pressing the handle 141 by the user's operation, move toward the front side, the spring 126 is the outer surface of the nib 124. In the longitudinal direction is compressed so that the nib (PT) is exposed through the nib protrusion hole (H110) of the case (110).

On the contrary, when the pressed state of the handle 141 is released and the nib 122 and the nib 124 retreat toward the rear side, the compressed state of the spring 126 is released and the spring 126 is in an initial state due to the restoring force. Phosphorus becomes uncompressed.

At this time, as the diameter of the second portion 1262 increases toward the lower end contacting the coupling ring 1242, the compression operation of the spring 126 is more stable, and the life of the spring 126 is increased.

3 and 4, the inner stopper assembly 130 is a portion to which the nib 1242 of the nib 124 is inserted and coupled, and the stopper body 132 and the front end portion of the stopper body 121. It has an inner stopper 134, and a connecting line 136 connected to the inner stopper 134.

The stopper body 132 is provided with the through-hole H132 which penetrates the stopper body 132 completely along a longitudinal direction in the center part.

The through hole H132 provides a movement path for the forward and backward movements of the pen nib 124. The pen tip PT is exposed to the outside of the stopper body 132 by the through hole H132, and the writing instrument 100 ) Is used.

The stopper body 132 is coupled to a stopper protruding from the front of the body body 1321 and the spring insertion portion 1322 and the body body 1321 located at the rear of the body body 1321 having an approximately circular cross section. Protrusion 1323 is provided.

Body body 1321 is a pair of connecting line fixing grooves (eg, second connecting line fixing grooves) (G1321) and the pair of connecting line fixing grooves located on the outer side and respectively fixing the position of the connecting line 136 ( The position fixing groove G132 located between G1321 (for example, about the center part) is provided.

The pair of connecting line fixing grooves G1321 are positioned on the same straight line as each of the pair of connecting line fixing grooves G1242 positioned in the coupling ring 1242.

Therefore, the corresponding portion of the connection line 136 is inserted into the connection line fixing groove (G1242) positioned in the fixing groove (G1321) and the coupling ring (1242), respectively, the body body 1321 and the coupling ring (1242) and the corresponding connection line Due to the step difference between the fixing grooves G1231 and G1242, the fixing grooves G1231 and G1242 are stably positioned in the connection line fixing grooves G1321 and G1242 without departing from the fixing grooves G1231 and G1242.

In this example, the connecting line fixing groove G1321 is connected to the first portion SG11 and the first portion SG11 having the width D11 of the same size regardless of the positional change in the longitudinal direction (that is, the extending direction). And a second portion SG12 having a width D12 that increases in size toward the rear end, that is, as the position moves.

Due to the size of the widths D11 and D12, the first portion SG11 may have a rectangular cross-sectional shape, and the second portion SG12 may have a trapezoidal cross-sectional shape, and the width of the first portion SG11 may be reduced. The width of the second portion SG12 is much larger than the width of the connecting line 126.

Due to the increase in the width of the second portion SG12, the margin of movement of the connecting line 136 that is expanded and folded by the forward or backward movement of the nib assembly 120 by the user's motion increases.

Therefore, the pressure or resistance applied to the connection line 136 is greatly reduced, so that the risk of disconnection of the connection line 136 is greatly reduced, and the operation of the connection line 136 that is expanded and folded according to the operation of the handle 141 is smoothly made. The risk of failure of the writing instrument 100 due to the entanglement of the 136, etc. is reduced, and the usability is improved.

The position fixing groove G132 of the plug body 132 is also located on the same straight line as the position fixing groove G124 located at the coupling ring 1242.

Therefore, as shown in FIGS. 9 and 10, when the assembly of the writing instrument 100 is completed, the position fixing grooves respectively positioned in the first case portion 1222, the coupling ring 1242, and the stopper body 132, respectively. The inner side position fixing protrusion P110 of the case 110 positioned on the same straight line is inserted into the G122, G124, and G132.

By the combination of the position fixing grooves G122, G124, and G132 and the position fixing protrusion P110, the case 110 and the inner stopper assembly 130, the nib assembly 120, and the handle 140 inserted therein are inserted into the case 110. ) The rotation range is limited. The twisting or disconnection of the connecting line 136 is prevented by the movement of the connecting line 136 according to the rotation operation of the components 110-140.

The spring insertion portion 1322 located on the rear surface of the body main body 1321 is a portion into which the first portion 1261 of the spring 126 is inserted, and has a reverse conical shape like the first portion 1261. At this time, the shape of the spring insertion part 1322 is determined according to the shape of the first part 1261 of the spring 126 to have an inverted shape that is a vertical inverted shape of the shape of the first part 1261.

When the first portion 1261 of the spring 126 having the conical shape is inserted into and coupled to the spring insertion portion 1322 having the reverse conical shape, the spring is inserted by the spring 126 as shown by the arrow shown in FIG. 11. A force acts toward the portion 1322 to transmit the pressure of the spring 126 in all directions of the spring inserting portion 1322, and acts toward the trunk body 1321 by the pressure of the spring 126. This increases the adhesion between the spring insertion portion 1322 and the pen nib 1241 inserted therein.

Therefore, the inflow of air into the through-hole H132 of the main body 1321 is greatly reduced, and the air contact degree of the nib PT located in the through-hole H132 is greatly reduced, so that the ink on the nib PT is reduced. The amount of evaporation of the also decreases to increase the use period of the writing instrument 100 and improve the user's writing feeling.

The stopper engaging protrusion 1323 is a portion coupled to the inner stopper 134 and protrudes from the front surface of the trunk body 1321 about the through hole H123.

The stopper engaging projection 1323 has a side surface that is an inclined surface that is inclined toward the front surface of the trunk body 1321.

At this time, since the inner diameter of the through hole (H123) is constant, the thickness of the stopper engaging projection (1323) increases toward the front side of the body body 1321, the front end of the stopper engaging projection (1323) in contact with the inner stopper (134) The thickness of the thinner increases the sealing force with the inner stopper (134).

The inner stopper 134 is connected to the edge of the front end face of the trunk body 1321 so as to be openable and close, and the center portion of the outer surface (that is, the surface located on the opposite side of the inner surface adjacent to the trunk body 1321). And a connecting line fixing protrusion 1341 and a hole covering protrusion 1342 protruding from the inner surface thereof.

The connecting line fixing protrusion 1341 is a portion into which a corresponding portion of the connecting line 136 is inserted and fixed, and a corresponding portion of the connecting line 136 is inserted into the connecting line fixing protrusion 1321 located on the outer surface of the inner plug 134. The position of the connecting line 136 is maintained to be stable.

As such, since the connection line 136 is fixedly connected to the outer surface of the inner stopper 134, the inner part by the forward or backward movement of the nib assembly 120 and the inner stopper assembly 130 according to the operation of the handle 141. The closed state of the inner stopper 134 is controlled due to the change in the pressure (ie, the tensile force) of the connecting line 136 acting on the outer surface of the stopper 134.

The hole cover protrusion 1342 is positioned to correspond to the plug coupling protrusion 1323, and is inserted into the through hole H132 located at the front of the body body 1321 to perform the opening and closing operation of the through hole H132. .

The hole-covering protrusion 1342 has a side surface that is an inclined surface that is inclined toward the inner surface of the inner cap 134, so that the diameter of the protrusion 1342 increases toward the inner surface. Accordingly, the hole cover protrusion 1342 can be easily inserted into the through hole H123.

As such, when the hole cover protrusion 1342 is inserted into the through hole H123, the front end of the plug coupling protrusion 1323 is the corresponding inner surface of the inner stopper 134 located at the boundary of the hole cover protrusion 1342. And, in this case, due to the reduction in the thickness of the stopper engaging protrusion 1323 in contact with the inner stopper 134, as already described, as shown in FIG. The line is in contact with the part instead of in surface contact.

Therefore, the inflow of air into the trunk body 1321 is reduced due to an increase in the sealing force between the inner plug 134 and the plug coupling protrusion 1323, thereby greatly reducing the degree of air contact of the nib PT positioned in the trunk body 1321. Reduces evaporation.

The connecting line 136 is made of a material having elasticity such as plastic, silicon or metal.

The connecting line 136 is a coupling part 1361 coupled to the connecting line fixing protrusion 1341 of the inner plug 134, a pair of connecting parts 1302 and a connecting part connected to both sides of the coupling part 1361. A connecting line stopper 1363 located at each end of the unit 1362 is provided.

Coupling portion 1361 is formed in the shape of a circular ring formed in the center hole, as described above, a hole is inserted into the fixing projection (1341) of the inner cap 134 so that the connecting line 136 is connected to the inner cap (134) Keep it safe.

At this time, the diameter of the hole of the engaging portion (1361) is smaller than the diameter of the connecting line fixing projection (1341), the coupling portion (1361) inserted into the fixing projection (1341) is a fixed projection (unless a physical force is applied from the outside) 1341).

Each connecting portion 1362 is made of a thin plate-shaped strap having a predetermined thickness and width, and is inserted into connecting line fixing grooves G1321 and G1242 respectively formed in the body body 1321 and the coupling ring 1242. Located.

The width of the connecting line fixing groove G1242 positioned in the coupling ring 1242 is smaller than the width of each connecting portion 1342 of the connecting line 136.

Therefore, each connecting portion 1322, which is coupled to the coupling ring 1242 and the other side via the coupling ring 1242, is stably positioned without falling out from the corresponding connection line fixing groove G1242 of the coupling ring 1242.

The pair of connecting line stoppers 1363 is a portion having a planar shape of a rectangle extending by a predetermined length in a direction perpendicular to the extending direction of the connecting portion 1362, and is connected to an end of each connecting portion 1362. have. Therefore, each connecting line stopper 1363 has a width 占 22 that is much larger than the width D21 of the connecting portion 1362.

Each of the connection line stoppers 1363 is positioned between the coupling ring 1242 and the front surface of the first case portion 1222, that is, the portion where the insertion protrusion P1222 of the first case portion 1222 is located. In this case, since each connection line stopper 1363 is positioned to be in contact with the rear surface of the coupling ring 1242, the connection line 136 functions as a separation prevention unit that prevents the connection line 136 from being separated from the coupling ring 1242.

Because of this, even when the maximum tension force is applied to the connecting portion (1362) in the initial state of the spring 126, since the connecting line stopper (1363) is hung on the rear of the coupling ring (1242), the connecting portion (1362) is a connecting line fixing groove ( Does not depart from G1242).

As such, one side of each connection portion 1362 is fixedly connected to the outer surface of the inner plug 134 through the coupling portion 1361, and the other side is fixedly connected to the connection line fixing groove G1242 of the coupling ring 1242, The connecting line 136 is positioned between the inner plug 134 and the coupling ring 1242.

Due to this, the opening operation of the inner plug 134 is made so that the connection line 136 is stably fixed to the coupling ring 1242 even if the tensile force of the connection line 136 is greatly reduced.

At this time, the length of each connection portion 1342 may be determined according to the distance from the outer surface of the inner stopper 134 to which the connection portion 1362 is connected to the rear surface of the coupling ring 1242.

In this example, the connecting portion 1362 of the connecting line 136 is composed of two, and thus the connecting line fixing grooves G1321 and G1242 formed in the plug body 132 and the coupling ring 1242 are also positioned two by one. However, the number of connecting portions 1322 connected to the coupling portion 1361 of the connecting line 136 may be one or three or more, and thus the connecting line positioned on the plug body 132 and the coupling ring 1242. The number of fixing grooves G1321 and G1242 is also the same as the number of the connecting portions 1362 or one or three or more.

5 and 6 show an inner stopper assembly 130 in which the connecting line 136 is assembled to the stopper body 132, where FIG. 5 shows a state in which the inner stopper 134 is closed. 6 illustrates a state in which the internal price 134 is opened.

5 and 6, the engaging portion 1361 of the connecting line 136 is inserted into and fixed to the connecting line fixing projection 1341 of the inner plug 134, and each connecting portion 1322 of the connecting line 136 is fixed. Is inserted into the connection line fixing groove (G1321) located on the body body 1321 side of the stopper body (132).

At this time, a method of inserting and fixing the coupling portion 1361 of the connecting line 136 to the connecting line fixing protrusion 1341 of the inner cap 134 is as follows.

As shown in FIG. 12A, the initial connecting line fixing protrusion 1340 protruding from the inner stopper 134 has a long protrusion shape, so that the diameter of the portion adjacent to the insertion portion of the connecting line 136 is increased. It is the largest and decreases in width toward the top and bottom. At this time, the maximum diameter of the initial connecting line fixing projection 1340 is larger than the diameter of the insertion hole formed in the engaging portion (1361).

As shown in FIG. 12B, the assembler inserts the initial connecting line fixing protrusion 1340 into the hole of the connecting portion 1361 of the connecting line 136 to insert the connecting portion 1361 into the connecting line fixing protrusion 1340. It is.

At this time, since the connecting line 136 is made of an elastic material such as plastic or metal, the initial connecting line fixing protrusion 1340 is inserted into the insertion hole of the engaging portion 1361 of the connecting line 136.

As such, when the coupling portion 1361 of the connecting line 136 is coupled to the initial connecting line fixing protrusion 1340, the assembler cuts a part of the upper end of the final connecting line fixing protrusion 1340 by using a cutter such as a laser or scissors to connect the final connecting line 1340. The fixing protrusion 1341 is completed (Fig. 12 (c)).

As such, since the connecting line 136 is positioned at the corresponding portion of the inner plug 134 by using the connecting line fixing protrusion 134, the coupling force between the connecting line 136 and the inner plug 134 is greatly increased.

The assembled inner stopper assembly 130 is assembled with the nib assembly 120 as shown in FIGS. 7 and 8.

That is, after the pen core 1221 is inserted into the open rear surface of the second case portion 1223 of the pen core portion 122, the pen core portion 122 is formed due to the combination of the first and second case portions 1222 and 1223. ) Is assembled.

Then, the nib 124 is inserted into the insertion protrusion P1222 of the first case portion 1222, and the coupling ring 1242 is inserted into the nib 124. Then, the spring 126 is inserted into the nib 124 into which the coupling ring 1242 is inserted to couple the nib assembly 120 to the nib 122.

After the connecting line 136 is coupled to the connecting line fixing protrusion 1341 of the inner stopper 134 of the stopper body 132, the nib 124 of the nib assembly 120 is connected to the through hole H132 of the stopper body 132. Is interlocked with Then, since the connecting portion 1342 of the connecting line 136 is inserted into the connecting line fixing grooves G1321 and G1242 of the body body 132 and the coupling ring 1242, the inner plug assembly 120 may be inserted into the nib assembly 120. 130) is assembled.

Then, the position fixing projections P110 of the case 110 are inserted into the position fixing grooves G132, G1242, and G122 of the trunk body 1321, the coupling ring 1242, and the pen core 122 positioned on a straight line. By inserting the nib assembly 120 and the inner stopper assembly 130 coupled to each other inside the case 110, the assembly of the writing instrument 100 is made.

In this state, the external exposure state of the nib PT is controlled according to the forward and backward movement of the nib 122 to which the nib assembly 120 is coupled according to the operation of the handle 141.

That is, as shown in FIG. 7, when the pen tip PT is in an initial state (ie, uncompressed state) of the spring 126 that is not exposed to the outside, the length of the spring 126 is determined by the restoring force of the spring 126. Keeping the maximum, the spring 126 pushes the stopper body 132 to the front side as much as possible.

Due to this, the force applied to the connecting line 136 located between the inner plug 134 of the plug body 132 and the coupling ring 1242 is also maximum, and the tensile force of the connecting portion 1262 of the connecting line 136 is also maximum. Becomes

Therefore, the magnitude of the pressure of the connecting line 136 applied to the outer surface of the inner cap 134 is also maximum, and the inner cap 134 closes the through hole H134 of the trunk body 1321. For this reason, the nib PT is located in the stopper body 132, so that the nib PT does not protrude outside the nib protruding hole H110 of the case 110 (see FIG. 12).

At this time, as described, since the force applied to the outer surface of the inner stopper 134 is maximized, the sealing force of the inner stopper 134 to the through hole H123 increases, so that the stopper body through the through hole H134 Air ingress into 132 and external exposure of the ink are prevented.

In addition, due to the first portion 1261 of the spring 126 having a conical shape, the sealing force to the spring insertion portion 1322 of the stopper body 132 is also greatly increased, so that ink flows out from the nib 124 to the outside. Phenomenon is prevented.

However, as shown in FIG. 8, when the pen tip assembly 120 and the inner stopper assembly 130 coupled to each other move forward along the through hole H132 toward the front portion of the case 110 due to the operation of the handle 141, The distance between the closure body 132 and the coupling ring 1242 is reduced to a minimum so that the state of the spring 126 is in a compressed state, which is an operating state.

Due to the reduction in the distance between the plug body 132 and the coupling ring 1242, the length of the connecting portion 1342 of the connecting line 136 connected between the plug body 132 and the coupling ring 1242 is a spring ( 126) and the length of the stopper body 132 is longer than the total length.

Accordingly, the tension of the connecting line 136 applied to the outer surface of the inner stopper 134 is released and by the forward operation of the inner stopper assembly 130 and the pen core assembly 120, the inner stopper 134 is as shown in FIG. 8. Open

A part of the pen nib 1241 located in the plug body 132 by the opening operation of the inner plug 134 protrudes to the outside of the plug body 132, and by the protruding operation of the nib 1242, As shown in FIG. 10, the nib PT protrudes out of the nib protruding hole H110 of the case 110 to allow a writing operation to be performed.

As such, since the writing instrument 100 of the present example does not need a separate case cap for blocking the nib protrusion hole H110, the inconvenience of the user is greatly reduced and the manufacturing cost is also reduced.

In addition, the opening and closing operation of the inner stopper 134 is performed according to whether the writing instrument 110 is used, thereby controlling the operation of the pen tip PT protruding to the outside of the stopper body 132.

Therefore, the nib PT positioned in the plug body 132 in the closed state by the closing operation of the inner plug 124 is exposed to the outside of the plug body 132 only when the writing instrument 100 is used. The evaporation of the ink flowing through the part is greatly reduced.

As a result, the service life of the writing instrument 100 is increased and ink dryness on the nib PT portion is greatly reduced, thereby improving user satisfaction and writing feeling.

In the present embodiment, the pen core assembly 120 and the case 110 are each manufactured as separate components, but the present invention is not limited thereto, and the case 11 of the pen core assembly 120 may be integrally formed. It may have a structure that can be injected into the ink from the rear of the 120 toward the inside.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. It will be understood that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: writing instrument 110: case

120: nib assembly 122: nib

124: nib 1242: coupling ring

126: spring 1261: first part

1262: Second Part 130: Internal Stopper Assembly

132: plug body 1321: body body

1322: spring insert 134: internal stopper

1342: projection for hole cover 136: connecting line

1361: coupling portion 1362: coupling portion

1363: connection stopper H132: through hole

1323: plug coupling protrusion G1242, G1321: connector fixing groove

G122, G1242, G132: Position Lock

P110: Positioning projection PT: Nib

Claims

Pen Core,

A nib assembly inserted into and coupled to the nib, and having a nib portion having a nib and a spring inserted into the nib portion;

An inner stopper assembly having a through hole and an inner stopper for opening and closing the through hole and having a stopper body in which the pen tip is inserted into the through hole to position the pen tip;

Including,

The spring,

A first portion wound in a conical shape and a second portion connected to the first portion

Including,

The stopper body,

Located in the rear of the body and the body body, the spring insertion portion having a reverse cone shape and the first portion of the spring is inserted and coupled

Writing instrument comprising a.
In claim 1,

The inner stopper assembly,

Further comprising a connecting line that one side is connected to the inner stopper of the plug body,

The nib assembly,

Further comprising a coupling ring located between the spring and the pen core portion is connected to the other side of the connection line

Writing utensils.
In claim 2,

The connecting line is,

A coupling part engaged with the inner stopper,

A connecting portion extending from the engaging portion

Including,

The body main body includes a first connecting line fixing groove in which the connecting portion is located,

The coupling ring is positioned on the same straight line as the first connecting line fixing groove and the second connecting line fixing groove in which the connecting portion is located.

Writing instrument comprising a.
In claim 3,

The first connecting line fixing groove of the body main body,

With the first portion having the same width regardless of the position

A second portion connected to the first portion and having a width that increases with position;

Writing utensils.
In claim 3,

The inner stopper is a writing instrument including a connection line fixing projection to which the connection portion of the connection line is inserted and fixed to the outer surface.
In claim 3,

The connecting line is connected to the connecting portion and writing instruments further comprising a connecting line stopper positioned between the coupling ring and the pen core portion.
In claim 6,

The writing instrument of which the width of the connection line stopper is larger than the width of the connection portion.
In claim 3,

The connecting line is made of a resilient material.
In claim 1,

The stopper body further includes a stopper engaging protrusion protruding about the through hole from the front of the body main body,

The inner stopper may include a hole cover protrusion protruding from an inner surface corresponding to the stopper coupling protrusion.

Writing utensils.
In claim 9,

The stopper engaging projection has a writing instrument having an inclined surface that increases in thickness toward the front of the body body.
In claim 9,

And the hole covering protrusion has a side inclined toward an inner surface of the inner stopper.
In claim 2,

And a case into which the nib, the nib assembly and the internal stopper assembly are inserted.

Writing utensils.
In claim 12,

The case includes a position fixing projection extending in the longitudinal direction on the inner surface,

The body body, the coupling ring and the pen core are each located on the same straight line, and includes a position fixing groove into which the fixing projection is inserted.

Writing utensils.