KR200493453Y1 - writing instrument and retractable element for writing instrument - Google Patents

Abstract

The present invention relates to a writing instrument and a moving member for a writing instrument. A writing implement according to an embodiment of the present invention includes: a case in which an opening through which one end of the writing core is exposed and concealed is formed at one end, and a cutout in the long axis direction is formed on one side of the other end; A writing core movably installed in the case; A knock in which the other end of the writing shim is inserted and fixed, and a coupling groove is formed on one side corresponding to the cutout portion; And an advancing and retreating member detachably coupled to the knock. The advancing and retreating member may include a pin portion detachably coupled to a coupling groove of the knock through the cutout portion; And a gripping portion coupled to the pin portion and extending in a long axis direction of the case along an outer surface of the case.

Description

Writing instrument and retractable element for writing instrument

The present invention relates to a writing instrument-related technology, and more particularly, to an appearance-type writing instrument and an advance and retreat member for a writing instrument.

Writing instruments in which the writing core is buried in the case and the writing core can appear and fall are usually using an advancing and retreating member. The advancing and retreating member is a means for transmitting an external force to the writing core so that the writing core reciprocates on the long axis of the case. The advancing and retreating member may be used in a state coupled to and fixed to the writing core inside the case. In this case, the advancing and retreating member moves along the long axis of the case by an external force so that the writing core protrudes out of the hole.

In the case of a conventional writing instrument, when the writing core is exposed and when the writing core is concealed, external forces in opposite directions are repeatedly applied to the gripping portions of the advancing and retreating members. In this case, fatigue stress is accumulated in the joint portion connecting the connecting member between the gripping portion and the case and the gripping portion, resulting in microcracks, and the numerical or quantitative expansion of the microcracks leads to a fatigue fracture phenomenon of the joint. Not only failure due to fatigue failure, but also failure due to ductile failure may occur at the joint part by applying a strong external force corresponding to the plastic area according to the usage habit of the user of the appearance-and-death writing instrument.

The phenomenon that the gripping part is separated due to fatigue fracture or ductile fracture may hinder long-term or continuous use of the writing instrument. In addition, as the gripping part is completely separated from the connecting member at a time that the user cannot predict, the user's hand may slide and injure the user. In addition, a writing instrument that has lost its function due to the separation of the gripping part can be continuously used only if it is discarded earlier than the expected remaining life or the entire advancing and retreating member included in the writing instrument is replaced with another advancing and retreating member. As a result, there is a problem in that the economical efficiency of the writing instrument is deteriorated, as well as a burden on the supply and demand of resources, energy required for production of the writing instrument is wasted, and environmental pollution is caused due to the discarded writing instrument.

The problem to be solved by the present invention is to provide a prolonged life of the writing instrument by reducing the possibility of fracture of the advancing member, securing safety in use, and providing an eco-friendly and economically high appearance and retreat writing instrument and the advancing and retreating member for the writing instrument.

According to an embodiment of the present invention, a case in which an opening through which one end of the writing core is exposed and concealed is formed at one end, and an incision in the long axis direction is formed on one side of the other end; A writing core movably installed in the case; A knock in which the other end of the writing shim is inserted and fixed, and a coupling groove is formed on one side corresponding to the cutout portion; And an advancing and retreating member detachably coupled to the knock, wherein the advancing and retreating member comprises: a pin portion separably coupled to a coupling groove of the knock through the cutout portion; And a gripping part coupled to the pin part and extending in a long axis direction of the case along an outer surface of the case may be provided. When the advancing and retreating member moves along the cutout, the end of the first surface of the gripping portion facing the case comes into contact with the case, thereby limiting the bending of the pin portion. One or more irregularities or curves may be formed on the first surface of the gripping part facing the case. At least one bending prevention part is formed on a first surface of the gripping part facing the case, and a gap between the bending prevention part and the case may be smaller than a gap between the case and the first surface of the gripping part. The warpage prevention part may include an anti-friction material or a material coated with anti-friction. The length of the first surface of the gripping part toward the case in a major axis direction may be 10 to 60 times the distance between the case and the first surface of the gripping part. The pin portion further includes a connecting portion coupled to the gripping portion, the connecting portion includes a connecting portion that is an end of the connecting portion positioned on the gripping portion side, and the connecting portion comprises a first surface of the gripping portion facing the case and It can be connected continuously without a step. The area of the cross section of the joint part perpendicular to the extension direction of the joint part may decrease from the grip part side toward the pin part side. The shape of the cross section of the joint part is an ellipse, and a major axis of the ellipse may be formed parallel to a major axis direction of the case. The surface of the joint may be mirror-treated.

According to another embodiment of the present invention, a case in which an opening in which one end of the writing core is exposed and concealed is formed at one end, and a cutout in the long axis direction is formed on one side of the other end, and the other end of the writing shim is inserted and fixed, and the incision A writing instrument advancing and retreating member coupled to a writing instrument including a knock having a coupling groove formed on a side corresponding to the portion, comprising: a pin portion detachably coupled to the coupling groove of the knock through the cutout portion; And a gripping portion coupled to the pin portion and extending in a long axis direction of the case along an outer surface of the case, and a moving forward/retracting member for a writing instrument that is detachably coupled to the knock may be provided. One or more irregularities or curves may be formed on the first surface of the gripping part facing the case. At least one bending prevention part is formed on a first surface of the gripping part facing the case, and a gap between the bending prevention part and the case may be smaller than a gap between the case and the first surface of the gripping part. The warpage prevention part may include an anti-friction material or a material coated with anti-friction. The length of the first surface of the gripping part toward the case in a major axis direction may be 10 to 60 times the distance between the case and the first surface of the gripping part. The pin portion further includes a connecting portion coupled to the gripping portion, the connecting portion includes a connecting portion that is an end of the connecting portion positioned on the gripping portion side, and the connecting portion comprises a first surface of the gripping portion facing the case and It can be connected continuously without a step. The area of the cross section of the joint part perpendicular to the extension direction of the joint part may decrease from the grip part to the pin part. The shape of the cross-section of the joint portion is an ellipse, and a long axis of the ellipse may be formed parallel to the long axis of the case. The surface of the joint may be mirror-treated.

According to an embodiment of the present invention, the gripping portion of the advancing member is extended in the long axis direction along the outer surface of the case, thereby reducing the possibility of fracture of the advancing member, extending the life of the writing instrument, ensuring safety in use, and environmentally friendly It is possible to provide a casual and economical haunting-type writing instrument.

According to an embodiment of the present invention, the holding portion of the advance and retreat member extends along the outer surface of the case in a long axis direction, so that the advance and retreat member for a writing instrument having the above advantage may be provided.

1A and 1B are perspective and exploded perspective views, respectively, of a protruding writing instrument according to an embodiment of the present invention.
Figure 2 is a perspective view of the advance and retreat member for a writing instrument according to an embodiment of the present invention.
Figure 3 is a perspective view of the advance and retreat member for a writing instrument according to another embodiment of the present invention.
Figure 4 is a perspective view of the advance and retreat member for a writing instrument according to another embodiment of the present invention.
5A to 5C are diagrams illustrating a principle in which a joint is broken when an external load is applied to the advancing and retreating member for a writing instrument according to a comparative example.
6A to 6C are diagrams illustrating a principle of preventing breakage of a joint when an external load acts on the advancing and retreating member for a writing instrument according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are provided to more completely describe the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is as follows. It is not limited to the examples. Rather, these embodiments are provided to make the present disclosure more faithful and complete, and to completely convey the spirit of the present invention to those skilled in the art.

In addition, in the drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description, and the same reference numerals refer to the same elements in the drawings. As used herein, the term “and/or” includes any and all combinations of one or more of the corresponding listed items.

The terms used in this specification are used to describe specific embodiments, and are not intended to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly indicates another case. Also, as used herein, “comprise” and/or “comprising” specify the presence of the mentioned shapes, numbers, steps, actions, members, elements and/or groups thereof. And does not exclude the presence or addition of one or more other shapes, numbers, actions, members, elements and/or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the drawings, the size and shape of members shown in the drawings may be exaggerated for convenience and clarity of description, and in actual implementation, the illustrated shape may be modified.

Accordingly, embodiments of the present invention should not be construed as being limited to a specific shape of a member or region shown in the present specification.

1A is a perspective view of a writing implement 10 according to an embodiment of the present invention. 1B is an exploded perspective view of the writing implement 10 shown in FIG. 1A. 2 is a perspective view of a writing instrument advancing member 200 according to an embodiment of the present invention.

Referring to FIGS. 1A and 1B, the writing implement 10 may include a case 100, an advancing and retreating member 200, a writing core (not shown), an elastic member (not shown), and a knock 300. An opening 101 may be formed at one end of the case 100.

The case 100 may have a space formed therein to accommodate the writing core. The writing shim may be installed to be movable inside the case 100. The writing core may be exposed and concealed through the opening 101 by reciprocating along the long axis direction of the case 100.

According to an embodiment, a cut portion 102 in a long axis direction may be formed on one side of the other end of the case 100. However, the location of the cutout 102 is not limited thereto. For example, the cutout 102 may be formed on one side of one end of the case 100 in the center of the case 100 or close to the opening 101 (not shown in the drawing). The advance and retreat member 200 to be described later may be coupled to the knock 300 to be described later through the cutout 102. A locking groove (not shown) or a locking protrusion (not shown) may be formed on one side of the case 100.

The writing implement 10 may include an elastic member (not shown) elastically supporting the writing core with respect to the case 100. Preferably, the elastic member (not shown) may be a spring. According to an embodiment, one end of the writing shim is inserted and connected to the spring, and the spring is disposed between the opening 101 and the writing shim, so that when the writing shim is moved in the direction of the opening 101, the opening 101 In the opposite direction of ), the writing core may receive a certain elastic force.

The knock 300 is a means for fixing the advancing and retreating member 200 to the case 100 to be described later. According to an embodiment, the knock 300 may be detachably coupled within the case 100. In this case, the other end of the writing shim may be inserted and fixed to the knock 300.

A coupling groove 301 may be formed on one side of the knock 300 corresponding to the cutout 102. The coupling groove 301 is a means for fixing the advancing member 200 to the case 100 by engaging and engaging with the pin 201 of the advancing member 200 to be described later.

According to an embodiment, a locking protrusion (not shown) or a locking groove (not shown) may be formed on the locking groove of the case 100 or the other side of the knock 300 corresponding to the locking protrusion. The locking protrusion is a means for maintaining the exposed state of the writing core.

Referring to FIG. 2, the advancing member 200 may include a pin portion 201 and a grip portion 204. The advance and retreat member 200 may be coupled to one end or the other end of the knock 103. The pin 201 is disposed between the pin 202 and the pin 202 and the gripping part 204 for coupling the advancing member 200 to the case 100, and coupling the pin 201 to the gripping part 204 It may include a connecting portion 203 to let. According to an embodiment, the pin 202 may be detachably coupled to the coupling groove 301 of the knock 103. According to an embodiment, the maximum cross-sectional area of the pin 202 may be larger than the area of the coupling groove 301 so that the pin portion 201 coupled with the coupling groove 301 is not easily separated.

The gripping part 204 is a part that extends from the connection part 203 to the outside of the case 100 and can be contacted by the user when the user applies an external force to the advancing and retreating member 200. The shape of the gripping portion 204 is not limited. For example, the gripping part 204 may be provided in a decorative shape such as a character in addition to a general flat plate shape such as a general circle, a square, a triangle, or a three-dimensional sphere, an ellipse, a hexahedron, or an octahedron. According to an embodiment, the material of the gripping portion 204 may be rubber or plastic or metal processed with irregularities to prevent slipping. The end of the first surface 204_1 of the gripping portion 204 may include an anti-friction material or an anti-friction coated material. For example, the end of the first surface 204_1 may be coated with a lubricant. Since the end of the first surface 204_1 can directly contact the case 100 by an external load, the possibility of abrasion is reduced by adopting an anti-friction material or an anti-friction coated material, and the expectation of the writing implement 10 It can increase the lifespan.

The gripping part 204 may extend in the long axis direction of the case 100 along the outer surface of the case 100. By the extension of the gripping part 204, the bending of the joint 203_1, which is the end of the connection part 203 located on the gripping part 204 side, is limited or prevented from bending, so that the breakage of the joint 203_1 can be prevented. I can. The principle of occurrence of warpage and the principle of limiting or preventing warpage will be described later in detail with reference to FIGS. 4A to 4B and FIGS. 5A and 5B, respectively.

According to an embodiment, the shape of the joint part 203_1 may be continuously connected to the first surface 204_1 of the gripping part facing the case without a step. The removal of the step may reduce the abrupt change in the shape of the joint 203_1 to relieve stress concentration, thereby preventing the occurrence of microcracks. Preferably, the area of the cross section of the joint portion 203_1 perpendicular to the extending direction of the joint portion 203_1 decreases from the grip portion side toward the pin portion, thereby minimizing a sharp change in shape.

According to an embodiment, the cross-section of the joint part 203_1 may include a circle or an ellipse. When the cross-section is an ellipse, the long axis of the ellipse is formed parallel to the long axis direction of the case 100, so that the load can be prevented from being concentrated on a narrow area. However, this is exemplary and the present invention is not limited thereto.

According to an embodiment, the surface of the joint 203_1 may be mirror-treated. Surface mirror treatment refers to a treatment that makes the surface smooth. By the mirror surface treatment, fine irregularities on the surface are removed, so that when repeatedly exposed to a load, the possibility that the fine irregularities are transferred to the fine cracks can be reduced.

3 is a perspective view showing the advance and retreat member 200 for a writing instrument according to another embodiment of the present invention.

Referring to FIG. 3, the bending preventing portions 206_1 and 206_2 may be further coupled to the first surface 204_1 of the gripping portion 204 facing the case 100. The gap between the bending prevention parts 206_1 and 206_2 and the case 100 may be smaller than the gap between the case 100 and the first surface 204_1 of the gripping part. When the bending prevention parts 206_1 and 206_2 are coupled to the first surface 204_1 of the gripping part 204, even if an external force bending the gripping part 204 acts, the first of the case 100 and the gripping part 204 The surface 204_1 may not directly contact the case 100 and the warpage preventing portions 206_1 and 206_2 may contact. In this case, the maximum bending angle may be reduced compared to a case where the case 100 and the first surface 204_1 of the gripping portion 204 directly contact each other. The shape of the bending prevention parts 206_1 and 206_2 is not limited, and may be a column, a hexahedron, a hemisphere, or an elliptical hemisphere. According to another embodiment, the warpage preventing portions 206_1 and 206_2 may include an anti-friction material or a material coated with anti-friction. Since the warpage prevention parts 206_1 and 206_2 can directly contact the case 100 by an external load, the possibility of wear is reduced by adopting a friction-preventing material or an anti-friction coated material, and the expectation of the writing implement 10 It can increase the lifespan.

Figure 4 is a perspective view showing the advance and retreat member 200 for a writing instrument according to another embodiment of the present invention.

Referring to FIG. 4, the first surface 204_1 of the gripping portion 204 may include at least one irregularity or bend. When an external force bending the gripping part 204 acts, the convex portion of the case 100 and the first surface 204_1 of the gripping part 204 may come into contact with each other. In this case, the maximum bending angle may be reduced than when the concave portion of the case 100 and the first surface 204_1 of the gripping portion 204 contact each other.

5A to 5C are diagrams illustrating a principle in which a joint is broken when an external load is applied to the advancing and retreating member for a writing instrument according to a comparative example.

Referring to FIG. 5A, bending may occur repeatedly whenever a user applies a force to the gripping portion 204 ′. When the writing core is reciprocated by the user, the direction of the force applied to the gripping part 204' is opposite to each other, so the bending is in both directions in the direction opposite to the opening 101 (A direction) or the opening 101 (B direction). Can be caused by

Referring to FIG. 5B, when a user holds the gripping part 204 ′ and applies a force toward the opening 101 to expose the writing core, the connection part 203 ′ may be temporarily bent by receiving an external load. In this case, the first surface of the connecting portion 203 ′ formed in the opposite direction of the opening is stretched, and the second surface opposite to the first surface is contracted. 5C, when the user holds the gripping part 204 ′ and applies a force toward the opposite side of the opening 101 to conceal the writing core, the first surface of the connection part 203 ′ is contracted, and the first surface of the connecting part 203 ′ is contracted. 2 sides are tensioned.

The joint part, which is the part where the connection part 203' is coupled with the gripping part 204', is a part where there is a rapid change in shape, and the stress is concentrated.When the bidirectional bending occurs repeatedly, the joint part 203_1 is micro-cracked. This occurs, and as the number of occurrences of the writing core increases, the number of microcracks increases or increases. When the number of occurrences of the writing core exceeds a certain number of times, fatigue breakage may occur at any moment, and the joint 203_1 may be broken. Depending on the user's habit of using the writing instrument, a load stronger than the normal load may be applied to the gripping portion 204 ′. Even if it is repeated a low number of times, ductile fracture may occur and the joint 203_1 may be fractured.

6A to 6C are diagrams illustrating a principle of preventing breakage of a joint when an external load acts on the advancing and retreating member for a writing instrument according to an embodiment of the present invention.

6A, the gripping part 204 and the connection part 203 when a user holds the gripping part 204 and applies a force toward the opening 101 in order to move the advancing and retreating member 200 along the cutout part 102. As the joint to which) is coupled is bent, one end of the gripping portion 204 descends toward the case 100. The gripping part 204 may receive a force in the direction of the opening 101 (C direction) or may receive a force in the direction opposite to the opening 101 (D direction).

6B, when the gripping portion 204 receives a force toward the opening 101, the end of the first surface 204_1 of the gripping portion 204 in the direction of the opening 101 faces the case 101. It descends and the end opposite to the opening 101 rises in the opposite direction to the case 101. Referring to FIG. 6C, when the gripping portion 204 receives a force in the direction opposite to the opening 101, the end opposite to the opening 101 descends in the case 100 direction, and the end in the opening 101 direction. It rises in the opposite direction to the case 100.

The gripping portion 204 extends along the outer surface of the case 100 in the long axis direction of the case 100, so that the lowered end decreases the distance from the case 100, and the descent continues to contact the case 100. Can be. Part of the load applied by the user due to the contact is transmitted to the case 100, and the case 100 is fixed, so that bending does not occur from the time when the contact occurs. As the degree of warpage is limited, the probability of occurrence of micro-cracks in the joint 203_1 may decrease.

The degree of warpage may decrease as the length of the gripping portion 204 in the long axis direction increases. According to an embodiment, the length of the first surface 204_1 of the gripping part 204 in the long axis direction (L in FIG. 6A) is 10 times the distance between the case 100 and the gripping part 204 (D in FIG. 6A). To 60 times. Preferably, the length L of the first surface 204_1 of the gripping part 204 in the long axis direction may be 15 to 30 times the distance D between the case 100 and the gripping part 204. More preferably, the length L of the first surface 204_1 of the gripping part 204 in the long axis direction may be 20 to 25 times the distance D between the case 100 and the gripping part 204. When the length (L) in the long axis direction is more than 20 times the distance (D) between the gripping portion 204 and the case 100, even when the advancing member 200 is a conventional plastic material used in a low-cost ballpoint pen, the writing instrument 10 In a typical use environment in which) is reciprocated 20 times a day, the life of the advance and retreat member 200 may be longer than two years, which is the expected life of the plastic writing instrument.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and that various substitutions, modifications, and changes are possible within the scope of the technical spirit of the present invention. It will be obvious to those who have knowledge.

10: writing implement
100: case
101: opening
102: incision
103: knock
200: absence of advance and retreat
201: pin part
202: pin
203: connection
203_1: joint
204: holding portion
204_1: the first side of the gripping portion
206_1, 206_2: warpage prevention part
300: knock
301: coupling groove

Claims (19)

A case in which an opening through which one end of the writing core is exposed and concealed is formed at one end, and an incision in the long axis direction is formed on one side of the other end;
A writing core movably installed in the case;
A knock in which the other end of the writing shim is inserted and fixed, and a coupling groove is formed on one side corresponding to the cutout portion; And
Including an advancing and retreating member detachably coupled to the knock,
The advancing and retreating member,
A pin portion detachably coupled to the coupling groove of the knock through the cutout portion; And
And a gripping portion coupled to the pin portion and extending in a long axis direction of the case along an outer surface of the case,
When the pin portion is bent while the advancing member moves along the cutout portion, a part of the first surface of the gripping portion facing the case contacts the case, thereby limiting the bending of the pin portion. delete The method of claim 1,
A writing implement having one or more irregularities or curves formed on the first surface of the gripping part facing the case. The method of claim 1,
At least one bending prevention part is formed on the first surface of the gripping part facing the case,
A writing instrument in which a gap between the bending prevention part and the case is smaller than a gap between the case and the first surface of the gripping part. The method of claim 4,
The anti-warpage part writing implements comprising an anti-friction material or an anti-friction coating material. The method of claim 1,
A writing instrument having a length of the first surface of the gripping part facing the case in a major axis direction is 10 to 60 times the distance between the case and the first surface of the gripping part. The method of claim 1,
The pin portion further includes a connection portion coupled to the grip portion,
The connection part includes a joint which is an end of the connection part located on the gripping part side,
The joint part is a writing instrument continuously connected to the first surface of the gripping part facing the case without a step. The method of claim 7,
A writing implement in which an area of a cross section of the joint part perpendicular to the extension direction of the joint part decreases from the grip part side toward the pin part side. The method of claim 8,
The shape of the cross section of the joint is an ellipse,
The long axis of the ellipse is a writing instrument formed parallel to the long axis direction of the case. The method of claim 7,
The surface of the joint is a mirror-treated writing instrument. A case in which an opening in which one end of the writing core is exposed and concealed is formed at one end, and an incision in the longitudinal direction is formed on one side of the other end, and the other end of the writing shim is inserted and fixed, and a coupling groove on one side corresponding to the incision In the writing instrument advancing and retreating member coupled to the writing instrument including the formed knock,
A pin portion detachably coupled to the coupling groove of the knock through the cutout portion; And
And a gripping portion coupled to the pin portion and extending in a major axis direction of the case along an outer surface of the case,
It is detachably coupled with the knock,
When the advance and retreat member moves along the cutout portion and the pin portion is bent, a portion of the first surface facing the case of the gripping portion comes into contact with the case, thereby limiting the bending of the pin portion. The method of claim 11,
A writing instrument advancing and retreating member having one or more irregularities or curves formed on the first surface of the gripping part facing the case. The method of claim 11,
At least one bending preventing portion is formed on the first surface of the gripping portion facing the case,
An advance and retreat member for a writing instrument in which a gap between the bend preventing part and the case is smaller than a gap between the case and the first surface of the gripping part. The method of claim 13,
The anti-warpage member advances and retreats for a writing instrument comprising an anti-friction material or an anti-friction coated material. The method of claim 11,
A length of the first surface of the gripping part facing the case in a long axis direction is 10 to 60 times the distance between the case and the first surface of the gripping part. The method of claim 11,
The pin portion further includes a connection portion coupled to the grip portion,
The connection part includes a joint which is an end of the connection part located on the gripping part side,
The joint member for a writing implement continuously connected without a step and the first surface of the gripping portion facing the case. The method of claim 16,
The advancing and retreating member for a writing implement in which an area of a cross section of the joint part perpendicular to the extending direction of the joint part decreases from the gripping part to the pin part. The method of claim 17,
The shape of the cross section of the joint is an ellipse,
The long axis of the ellipse is the advance and retreat member for a writing instrument formed parallel to the long axis of the case. The method of claim 16,
The surface of the joint portion is a mirror-treated writing instrument advancing and retreating member.

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