KR20010105443A - Safety Knock-Type Writing Utensil - Google Patents

Abstract

Easy to assemble by reducing the number of parts to be assembled on the writing instruments, and to keep the thickness of the outer shell while keeping the thickness of the writing core, it is formed in a predetermined shape and the knock groove is formed in a predetermined length in the longitudinal direction from the top The outer cylinder, a clip and a stopper assembled at the end of the outer cylinder are integrally formed, an actuating member protruding from the lower portion of the clip toward the knock groove of the outer cylinder, inserted into the outer cylinder, and ink is stored therein. At one end, the writing lead is installed to the writing tip, the elastic member which is installed inside the outer cylinder and always exerts a force on the opposite side of the tip to the writing core, and the pressing member is inserted into the upper portion of the outer cylinder to be movable in the longitudinal direction; The pressing member is formed to have a predetermined length so as to be protruded from one side of the pressing member and movable in the knock groove formed in the longitudinal direction of the outer cylinder If the first time move when held in a writing tip is advanced hearing condition and the forward second and a knock member which is in a state of backward by the writing tip consideration the elasticity of the elastic member.

Description

Safety Knock-Type Writing Utensil}

The present invention relates to a safety knock-type writing instrument in which the writing core is concealed by lifting the hook of the clip installed on the writing instrument in order to insert the writing instrument into the collar after using the writing instrument. In particular, the number of parts is small and easy to assemble. The present invention relates to a safety knock type writing instrument capable of lengthening a writing core while maintaining it.

In general, writing instruments include pencils, ballpoint pens, and signature pens. Applicators for applying a correction liquid or the like are known as instruments similar to writing instruments.

The writing instrument is a fixed type to protect the exposed tip portion using the lid and the exposed tip is fixed to the outer cylinder in the state that the tip is exposed, and the writing unit is movable to assemble the outer cylinder and the tip is exposed to the outside of the outer cylinder according to the operation of the pressing member. There is a knock type that can be inserted or inserted.

Conventional knock type writing instruments are configured such that when the pressing member is pressed once, the writing core is moved so that the tip is exposed to the outside of the cap fixed to the lower end of the outer cylinder, and when the pressing member is pressed again, the writing core is moved and the tip is inserted into the cap fixed to the outer cylinder. .

A spring is installed at the lower end of the writing core of the knock type writing instrument as described above to apply a force to the opposite side of the tip portion, and once the pressing member is pressed, the moved state is maintained and the knock means is installed to return.

However, in the above method, the user forms the pocket formed on the clothes such as a suit or shirt with the tip portion of the writing core exposed while forgetting to conceal the tip portion of the writing core inside the cap fixed to the outer cylinder by reactivating the knocking means. If you put the hook of the clip formed on the upper portion of the outer cylinder in the storage case, and insert the writing instruments in the pocket with the tip exposed as described above, the clothes are discharged by the ink flowing as the tip contacts the cloth Contamination or staining may occur.

In order to solve the above problems, the safety knock-type writing instruments configured to cover the inside of the cap fixed to the outer cylinder of the writing pen is automatically lifted by the hook of the clip fixed to the outer cylinder in order to insert the writing instrument into the pocket of clothes, etc. It is proposed.

However, the conventional safety knock-type writing instruments are made by adding a configuration for the safety knock in addition to the configuration for the knock operation, the structure is complicated, the number of parts increases, the manufacturing cost increases.

In addition, since the configuration for the safety knock is installed between the writing core and the outer cylinder, the thickness of the outer cylinder becomes thick, resulting in aesthetic and / or inconvenience in use.

And since the knock operation is performed at the ring portion of the clip, the length of the writing lead is shortened, which reduces the amount of ink stored and lowers the efficiency.

Therefore, in order to maintain the same amount of storage of ink, the thickness of the refill should be thick, but in this case, the sealing agent that prevents the ink from flowing backward inside the writing core is weakened and the surface tension is weakened and pushed backward. Occurs.

An object of the present invention is to solve the problems as described above, easy to assemble by reducing the number of parts, and low cost, and to maintain the thickness of the outer cylinder because it forms a configuration for knock operation and safety knock in the groove formed in the outer cylinder While providing a safe knock writing instrument that can be used for a long writing core.

1 is an exploded perspective view schematically showing a first embodiment of a safety knock-type writing implement according to the present invention.

Figure 2 is a partially enlarged perspective view schematically showing the operating member and the knock member in the first embodiment of the safety knock-type writing implement according to the present invention.

Figure 3 is a partially enlarged side view schematically showing the operating state of the operating member and the knock member in the first embodiment of the safety knock-type writing implement according to the present invention.

Figure 4 is a schematic cross-sectional view showing a writing state in the first embodiment of the safety knock-type writing implement according to the present invention.

Figure 5 is a cross-sectional view schematically showing a storage state in the first embodiment of the safety knock-type writing implement according to the present invention.

Figure 6 is a partially enlarged cross-sectional view schematically showing the writing state in the first embodiment of the safety knock-type writing implement according to the present invention.

7 is a cross-sectional view taken along the line A-A of FIG.

8 is a partially enlarged cross-sectional view schematically showing a writing state in the second embodiment of the safety knock-type writing implement according to the present invention.

9 is a cross-sectional view corresponding to FIG. 7 in a second embodiment of a safety knock writing implement according to the present invention; FIG.

The safety knock-type writing instrument proposed by the present invention is formed in a predetermined shape and the outer cylinder is formed with a knock groove in a predetermined length from the top, the end is assembled to the end of the outer cylinder and the stopper and the ring is integrally formed Clip, a writing member which protrudes from the lower end of the ring of the clip toward the knock groove of the outer cylinder, a writing lead inserted into the outer cylinder, the ink is stored therein and the tip is installed at one end of the writing; An elastic member that is installed inside the outer cylinder and always exerts a force on the writing core opposite to the tip; a pressing member inserted movably in the longitudinal direction on the upper portion of the outer cylinder; and a length of the outer cylinder on one side of the pressing member. Protruded in a direction to a predetermined length and inserted into the knock groove so as to be movable; If the tip of the writing lead is caught by the member and kept in the writing state exposed to the outside, and the second pressing member is advanced again, the state of the operation member is released and the writing lead is reversed by the elastic force of the elastic member. Includes a knock member operating in a concealed storage condition inwardly.

The knock member is composed of an extension piece divided into two in the middle extending in the longitudinal direction of the outer cylinder, and a knock protrusion protruding in a direction facing each other at the end of the extension piece.

The actuating member is formed of a plate-shaped body protruding from the ring of the clip toward the knock groove of the outer cylinder, and protruding from one or both side surfaces of the body, and the knocking protrusion when the knock member is advanced once. Knock guide which guides forward movement of the knock member and the knock prevention member is formed to prevent the knock member from returning when the knock member is moved forward and then the forward force is removed and retracted by the elasticity of the elastic member. The protrusions are formed to protrude from one or both sides of the body, and are formed at predetermined intervals with the knock guide protrusions. The knock member is advanced once and then the forward force acting on the knock member is removed to remove the elastic member. Guide the knock projection toward the return preventing groove by the elastic force and advance the second time again. The outside by the elastic force of the elastic member comprises a return guide protrusion for guiding the above-mentioned knock projections are to be returned.

The hook and / or knock member of the clip has a predetermined elasticity.

The knock groove is formed in the longitudinal direction in the outer cylinder is formed in one or both sides of the inclined surface widening toward the inner surface from the outer surface of the outer cylinder.

Next, a preferred embodiment of the safety knock-type writing instrument according to the present invention will be described in detail with reference to the drawings.

First, the first embodiment of the safety knock-type writing instruments according to the present invention, as shown in Figs. 1 and 4, the outer cylinder (1) formed in a predetermined shape and the writing core inserted into the outer cylinder (1) (2), a cap (3) assembled at one end of the outer cylinder (1), and the cap (3) is provided between the cap (3) and the writing lead (2), the cap ( The elastic member 4 which exerts a force in the opposite direction of 3), the clip 5 which is assembled to the said outer cylinder 1 from the opposite side of the said cap 3, and the opposite side of the said cap 3, The pressing member 6 is inserted into the outer cylinder 1 so as to be movable in the longitudinal direction, and is formed integrally with the pressing member 6, and when the pressing member 6 is first advanced toward the cap 3, the writing core Keeping the (2) in the advanced state and advancing the pressing member 6 again the second time, the knocking member 7 which operates in the state where the writing lead 2 retreats by the elastic force of the elastic member 4 described above. artillery The.

Ink is stored inside the writing core 2, and a tip 21 is provided at one end of the writing core 2 to which writing is made and the ball is rotatably assembled.

An upper portion of the outer cylinder 1 is formed with an assembly portion 11 to which the clip 5 is assembled, and the cap 3 is assembled at the opposite end (lower portion) of the outer cylinder 1. Male thread 12 is formed.

In addition, the outer cylinder 1 is formed with a knock groove 13 into which the knock member 7 is movably inserted into a predetermined length in the longitudinal direction of the outer cylinder 1 from the assembly portion 11.

The cap 3 assembled to the male screw 12 formed in the lower portion of the outer cylinder 1 is formed in a substantially cone shape, and the cone-shaped cap 3 has a female thread 31 formed therein to form an outer cylinder ( The tip 21 of the writing lead 2 which is assembled to the male screw 12 formed in the lower part of 1) and which is placed to be movable in the longitudinal direction in the inside of the outer cylinder 1 is inside the cone shape of the cap 3. Located in

In the above description, the female screw 31 and the male screw 12 are formed to be assembled and fixed to the cap 3 and the outer cylinder 1, but the present invention is not limited thereto. It is also possible to form to be assembled by fitting to the bottom of 1), it is also possible to form one or more projections or to form the upper portion of the cap (3) by the tapered surface can be configured to ensure that the assembled state.

The elastic member 4 installed between the cap 3 and the writing lead 2 is made using a compression coil spring.

As shown in Figs. 1 and 6, the pressing member 6 inserted into the upper part of the outer cylinder 1 so as to be movable up and down is formed with a support part 61 made of a jaw. The lower end portion protrudes outward to a height corresponding to the outer diameter of the outer cylinder 1 to form a knock member 7 formed to a predetermined length in the longitudinal direction of the outer cylinder 1.

The pressing member 6 is equal to or larger than the thickness of the writing lead 2, and is formed so that the thickness of the outer cylinder 1 is not thickened.

In addition, the upper portion of the pressing member 6 is preferably formed to have a rounded curved surface so that the appearance is beautiful and does not give a poke feeling when pressing the upper surface with a finger.

The knock member 7 formed integrally with the pressing member 6 and formed in the longitudinal direction of the outer cylinder 1 is inserted into the knock groove 13 formed in the upper portion of the outer cylinder 1 to be movable in the longitudinal direction. Is installed.

The knock member 7 is divided into two in the middle of the longitudinal direction is formed with an extension piece 71 that continues to extend, the end of the extension piece 71 knock projections projecting in a predetermined length in a direction facing each other Form 72.

The knock member 7 is made of a synthetic resin, engineering plastics and iron pieces or wires and the like with strong elasticity.

In the above description, the extension piece 71 of the knock member 7 is formed on both sides, but only one extension piece 71 can be formed and used.

In the above description, the knock member 7 is described as being integrally formed with the pressing member 6. However, the knock member 7 may be fabricated as a separate component and then attached or assembled.

As shown in FIG. 1, the clip 5 includes a stopper 51 inserted into the upper assembly portion 11 of the outer cylinder 1, and the pressing member is disposed at the upper center of the stopper 51. (6) forms a hole 53 into which it is movably inserted.

The hole 53 formed in the stopper 51 of the clip 5 is formed so that the upper portion of the pressing member 6 passes and the supporting portion 61 integrally formed in the pressing member 6 is caught. It is preferable that the pressing member 6 is configured to prevent the pressing member 6 from being separated by the elastic force of the elastic member 4.

As described above, the stopper 51 of the clip 5 may be assembled and fixed by fitting to the assembling portion 11 formed on the upper portion of the outer cylinder 1, but may be assembled by forming one or more protrusions or forming a tapered surface. It is also possible to form so that the state is securely maintained, and it is also possible to form a female screw and a male screw in the stopper 51 of the clip 5 and the assembly portion 11 of the outer cylinder 1, and to assemble it by screwing.

One end of the stopper 51 of the clip 5 is formed by connecting a ring 52 formed with a predetermined length toward the cap 3 so as to be plugged into a collar or pocket collar and the stopper 51.

As shown in FIGS. 1 to 3, a lower portion of the ring 52 connected to the stopper 51 protrudes in the center direction (knock groove 13 direction) of the outer cylinder 1 to operate the member ( 8) form.

As shown in FIGS. 1 to 3, the operation member 8 protrudes from the ring 52 of the clip 5 toward the knock groove 13 of the outer cylinder 1. And a protrusion formed from one or both side surfaces of the body 80, and guides the forward movement of the knock protrusion 72 when the knock member 7 moves forward once. The knock guide protrusion 81 which restrains the backward movement (return) of the knock member 7 to move backward by the elastic force of the elastic member 4 by removing the forward force acting on the knock guide protrusion ( 81 is formed by protruding from one or both sides of the body 80 at a predetermined interval, and the knock projection 72 is the knock guide 72 when the knock member 7 moves forward and then back a second time. The return guide projection 83 for guiding the reverse movement for the return without being caught by the projection 81 Include.

The lower side (cap 3 side) side of the knock guide projection 81 is formed in the concave shape of the return preventing groove 82 is caught in the knock projection 72 is caught in the knock projection (72) It is preferable because the state remains stable.

The return preventing groove 82 is formed so that the concave vertex is located adjacent to the center line or the center line of the knock member 7 does not apply a force in the radial direction of the outer cylinder (1) to the knock member (7). It is preferable because the state in which the knock projection 72 is caught in the return preventing groove 82 is maintained.

The knock guide protrusion 81 is formed in a chevron shape ("∧") that is pointed upwardly (stopper 61 side).

One side of the upper side of the knock guide projection 81 is the knock member 7 so that the knock projection 72 moves forward or outward of the outer cylinder 1 when the knock member 7 moves forward once. The inclined surface inclined at a predetermined angle with respect to the center line, and the other side of the upper side is parallel or predetermined with the center line of the knock member 7 so as not to be caught when the knock member 7 moves forward and back a second time. Form inclined at an angle.

The pointed vertex of the upper surface of the knock guide projection 81 is formed so as to be biased toward either the outer cylinder 1 or the ring 52 with respect to the center line of the knock member 7.

If the upper vertex of the knock guide projection 81 is formed to be biased toward the outer cylinder (1), the knock projection (72) when the knock member (7) advances the first time is the knock guide projection ( Advance along the face toward the ring 52 of 81.

In this case, forming the inclined surface that is one side of the upper side of the knock guide protrusion 81 toward the ring 52 while forming the inclined surface closer to the ring 52 with respect to the forward direction of the knock member 7. It is preferable because the 72 moves naturally toward the concave return preventing groove 82 by the elastic force of the knock member 7 after leaving the knock guide protrusion 81.

In addition, the other side of the upper side of the knock guide projection 81 is formed in an inclined surface away from the outer cylinder 1 side with respect to the backward direction of the knock member 7 toward the outer cylinder 1 side is the knock member (7) Since the knock protrusion 72 does not catch the knock guide protrusion 81 when the reverse is performed, the backward movement of the knock member 7 is smoothly performed.

And when the upper vertex of the knock guide projection 81 is formed to be offset toward the outer cylinder (1), the knock guide 72 is the knock guide 72 when the knock member (7) advances first time Advance along the surface facing the outer cylinder (1) of (81).

In this case, the inclined surface that is one side of the upper side of the knock guide protrusion 81 is formed as an inclined surface that is closer to the outer cylinder 1 with respect to the forward direction of the knock member 7 while facing toward the outer cylinder 1, and the other side surface is different. The side is formed in an inclined surface away from the ring 52 with respect to the reverse direction of the knock member 7 toward the ring 52 side.

The return guide protrusion 83 forms the guide groove 84 at predetermined intervals in which the knock protrusion 72 is inserted and moved between the knock guide protrusion 81 and the knock guide protrusion 81.

The upper side (stopper 61 side) side surface of the return guide protrusion 83 is formed in a chevron shape ("∧") that is pointed upwards.

The pointed vertex of the upper surface of the return guide projection 83 is formed so as to be biased toward either the outer cylinder 1 side or the ring 52 side with respect to the center line of the knock member 7.

For example, when the sharp vertex of the upper surface of the knock guide protrusion 81 is located toward the outer cylinder 1 with respect to the center line of the knock member 7, the sharp point of the upper surface of the return guide protrusion 83 is located. The vertex is positioned toward the ring 52 with respect to the center line of the knock member 7, and the sharp vertex of the upper surface of the knock guide protrusion 81 is described above with respect to the center line of the knock member 7. 52, the sharp edge of the upper surface of the return guide projection 83 is formed to be biased toward the outer cylinder 1 with respect to the centerline of the knock member 7.

The surface facing the outer cylinder 1, which is the upper side surface of the return guide projection 83, and the surface facing the ring 52, respectively, the outer cylinder 1 and the ring 52 with respect to the forward direction of the knock member 7, respectively. It is formed as an inclined surface approaching toward).

The upper side surface, which is the inclined surface of the return guide protrusion 83, is located toward the ring 52 side and the outer cylinder 1 side more than the end of the ring 52 side and the outer cylinder 1 side of the knock guide protrusion 81. It is preferable to form the knock member 7 so as to continuously move the knock protrusion 72 toward the ring 52 side or the outer cylinder 1 side when the knock member 7 advances the first or second time.

The knock guide protrusion 81 and the return guide protrusion 83 may be formed only on one side of the operation member 8, or may be formed on both sides.

Next will be described the operation of the first embodiment of the safety knock-type writing instruments according to the present invention configured as described above.

In the first embodiment, the sharp vertex of the knock guide protrusion 81 is located toward the outer cylinder 1 with respect to the center line of the knock member 7, and the sharp vertex of the return guide protrusion 83. A case in which the center line of the knock member 7 is offset toward the ring 52 will be described.

First, when the user presses the pressing member 6 protruding above the stopper 51 of the clip 5 assembled in the assembly portion 11 of the outer cylinder 1 in order to write in the storage state as shown in FIG. 5, The supporting portion 61 integrally formed with the pressing member 6 moves toward the cap 3, and the writing lead 2 in contact with the supporting portion 61 of the pressing member 6 receives the elastic force of the elastic member 4. The tip 21 part is exposed to the outside of the cap 3 by moving forward toward the cap 3.

At this time, the knock member 7 integrally formed with the support 61 moves forward toward the cap 3 along the knock groove 13 formed in the longitudinal direction of the outer cylinder 1.

As described above, the knocking member 72 formed to face each other on the extension piece 71 of the knocking member 7 moves forward (first time) and the ring member 52 of the clip 5 as described above. When contacted with the upper end surface of the body 80 of the operating member 8 formed in the), the knock projection 72 is closer to the ring 52 along one side of the upper side of the knock guide projection 81, cap (3) Move forward toward

When the knock protrusion 72 moves along the knock guide protrusion 81, the knock member 7 is moved forward while being bent toward the ring 52 because the extension piece 71 retains elasticity.

As described above, when the knock protrusion 72 of the knock member 7 moves forward to remove the force applied to the pressing member 6 while being out of the knock guide protrusion 81, the writing core ( The pressing member 6 moves toward the stopper 52 by the elastic force of the elastic member 4 transmitted through 2), and the knock member 7 also moves backward toward the stopper 52.

When the knock projection 72 of the knock member 7 moves forward to move out of the knock guide projection 81, the knock projection 72 continues to move forward along the return guide projection 83, and the elastic member 4 When the knock member 7 moves backward by the elastic force, the knock member 7 moves along the guide groove 84 and is inserted into the return preventing groove 82 of the knock guide protrusion 81.

When the knock protrusion 72 is caught by the return preventing groove 82 as described above, the backward movement of the knock member 7 is stopped, and the movement of the pressing member 6 is stopped. 2) maintains a writing state (see Fig. 4) in which the tip 21 tip is exposed out of the cap 3;

In the writing state as described above (see FIG. 4), the user presses the pressing member 6 again (second time) in order to take writing and keep it, and to the support 61 formed integrally with the pressing member 6. The writing core 2 in contact with each other advances the elastic force of the elastic member 4 and moves forward, and the knock member 7 moves forward.

When the knock member 7 moves forward as described above, the knock projection 72 is separated from the return preventing groove 82 and moves forward while approaching the outer cylinder 1 along the return guide projection 83. The knock member 7 moves forward while being bent toward the outer cylinder 1.

When the knock protrusion 72 is moved forward to remove the force pressing the pressing member 6 in a state deviating from the return preventing groove 82 and the knock guide protrusion 81, the writing core ( The knock member 7 moves backward by the elastic force of the elastic member 4 acting on 2).

At this time, the knock protrusion 72 is moved away from the knock guide protrusion 81 and toward the outer cylinder 1, so that the knock protrusion 72 is not caught by the knock guide protrusion 81 or caught by the return preventing groove 82 to return. do.

Accordingly, the backward movement of the knock member 7 is made smoothly, and the tip 21 of the writing lead 2 is in a storage state in which the tip 21 is completely concealed into the cap 3 (see FIG. 5).

As described above, as the pressing member 6 is repeatedly pressed, a writing state (see FIG. 4) and a storage state (see FIG. 5) are alternately performed.

In addition, in the writing state (see FIG. 4), the user presses the pressing member 6 again to change the storage state (see FIG. 5) into the collar or pocket collar so as to be inserted into the collar 52 of the clip 5. Lifting away from (1) or inserting a collar or pocket collar between the ring 52 and the outer cylinder 1, the hook 52 is lifted up and the knock protrusion 72 of the knock member 7 is lifted. ) Is separated from the return preventing groove 82 and the knock guide projection (81).

When the knock protrusion 72 is separated from the return preventing groove 82 and the knock guide protrusion 81 as described above, the writing lead 2 moves backward by the elastic force of the elastic member 4, and the pressing is performed. The member 6 is returned, and the tip 21 of the writing lead 2 is in a storage state (see FIG. 5) completely concealed inside the cap 3.

And the second embodiment of the knock-type writing instruments according to the present invention, as shown in Figures 8 and 9, the narrower side of the knock groove 13 side 14 of the outer cylinder 1 toward the outer side of the outer cylinder 1 It is formed as an inclined surface, and both sides of the knock member 7 which is inserted into the knock groove 13 so as to be movable are formed as an inclined surface corresponding to the side surface 14 of the knock groove 13 and the outer cylinder 1 The knock member 7 which is movably inserted into the knock groove 13 of) is prevented from being separated or exposed outward of the outer cylinder 1.

In the above-described ring 52 is formed using a good elastic material.

In addition, the extension piece 71 of the operation member 7 is formed by using a material having less elasticity and less deformation such as bending or bending.

In the above, the side surface 14 of the knock groove 13 formed in the outer cylinder 1 is formed as an inclined surface that narrows toward the outer side of the outer cylinder 1, but the present invention is not limited to this, but toward the inner side of the outer cylinder 1 It is also possible to form narrower, and the side surface 14 of the knock groove 13 of the outer cylinder 1 is formed in a triangular shape, the groove of the shape corresponding to the triangular shape of the knock groove 13 on the side surface of the knock member (7) It is also possible to form and assemble, it is also possible to form a triangular groove in the side surface 14 of the knock groove 13 and to form a side surface of the knock member 7 in a triangular shape.

Also in the second embodiment of the safety knock-type writing instrument according to the present invention configured as described above can be carried out in the same manner as the first embodiment described above except for the above-described configuration, detailed description thereof will be omitted.

In the second embodiment, the writing state (see FIG. 4) and the storage state (see FIG. 5) are repeated through the same process as that of the first embodiment as the pressing member 6 is repeatedly pressed. It is done repeatedly.

In the second embodiment, unlike the first embodiment described above, the extension piece 71 of the knock member 7 is not bent, and the ring 52 is bent as the knock member 7 is advanced, and the knock protrusion 72 is formed. ) Moves along the knock guide protrusion 81 and the return guide protrusion 83.

In the above description of the preferred embodiment of the safety knock-type writing instruments according to the present invention, the present invention is not limited to this, it is possible to perform various modifications within the scope of the claims and the detailed description of the invention and the accompanying drawings. This also belongs to the scope of the present invention.

According to the safety knock-type writing instruments according to the present invention made as described above, when the tip portion of the writing core is exposed to the outside of the cap, and the hook of the clip is inserted into the pocket feather, the writing core is automatically inside the cap by the elastic force of the elastic member. This helps prevent ink from spilling and staining your clothes.

In addition, unlike the conventional method of placing the knock member between the outer cylinder and the writing core, it is possible to keep the thickness of the outer cylinder thin because it is inserted into the knock groove formed in the outer cylinder, and is easy and easy to manufacture and assemble since the number of parts for the safety knock is reduced. Cost savings

And because the knock operation is performed by extending the length of the knock member to the end of the ring, it is possible to form the length of the writing lead as long as possible, it is possible to maintain a large ink storage amount.

Claims (6)

Is formed in a predetermined shape and the outer cylinder in which the knock groove is formed in a predetermined length in the longitudinal direction from the top, A clip assembled at the upper end of the outer cylinder and having a stopper and a ring integrally formed thereon; An actuating member protruding from the lower part of the ring of the clip toward the knock groove of the outer cylinder; The writing core is inserted into the outer cylinder and the ink is stored inside and the tip is installed at one end of the writing, An elastic member which is installed inside the outer cylinder and always exerts a force on the writing core opposite to the tip; A pressing member which is inserted into the upper portion of the outer cylinder and the stopper of the clip in a longitudinal direction, and forms a support part formed of the jaw so as to be prevented from being caught by the stopper of the clip; One side of the pressing member protrudes in the longitudinal direction of the outer cylinder, is formed to a predetermined length, and is inserted into the knock groove so as to be movable. When the pressing member is advanced once, the tip of the writing lead is caught by the operating member. If the writing state is maintained in the exposed state and then advances again a second time, the state that is caught by the operating member is released, the knocking member is operated so that the writing core is reversed by the elastic force of the elastic member so that the tip is concealed inwardly. Safe knock writing instruments to include. According to claim 1, wherein the knock member is an extension piece that is divided into two extending in the middle extending in the longitudinal direction of the outer cylinder, Safety knock writing instruments comprising a knock projection protruding in a direction facing each other at the end of the extension piece. The method of claim 2, wherein the operation member is a plate-shaped body protruding toward the knock groove of the outer cylinder from the ring of the clip; It is formed by protruding from one or both sides of the body and guides the forward movement of the knock projection when the knock member moves forward one time, and the knock member moves forward once and then the forward force is removed to remove the elastic force of the elastic member. A knock guide protrusion in which a return preventing groove of a concave shape is formed toward a stopper which stops the knock member when it is retracted by the knock protrusion; It is formed by protruding from both sides of one side of the body and formed at a predetermined interval with the knock guide projection, and the knock member is moved forward by the elastic force of the elastic member when the knock member is advanced once and then the forward force is removed. Safety knock-type writing instruments comprising a return guide projection for guiding the knock projection to be guided toward the return preventing groove and to be returned by the elastic force of the elastic member out of the return prevention groove when the second advance. According to claim 3, wherein the knock guide protrusion is formed in the shape of a pointed chevron toward the stopper, The upper side of the return guide projection is formed in the shape of a pointed chevron toward the stopper, The pointed vertex of the knock guide projection is formed so as to be biased toward the outer cylinder side or the ring side with respect to the center line of the knock member, Safe kink writing instruments are formed such that the sharp vertex of the return guide projection is located to the ring side or the outer cylinder side opposite to the sharp vertex of the knock guide projection with respect to the center line of the knock member. According to claim 1, wherein one or both sides of the knock groove formed in the outer cylinder is formed as an inclined surface that narrows toward the outside from the inside of the outer cylinder, Safety knock-type writing instruments to form one or both sides of the knock member to the inclined surface corresponding to the inclined surface of the knock groove. The safety knock-type writing implement according to claim 1, wherein the knock member or the ring of the clip is formed of a material having elasticity.