KR100326153B1 - Side Knock Type Writing Instrument - Google Patents

Abstract

Since there is no direct impact on the elastic force at the tip part, the writing core is inserted into the outer cylinder, the outer cylinder and the tip is installed at one side, and the outer cylinder is prevented from dropping the ball and preventing the break of the handwriting or change of line thickness. A protective member that is assembled to protect the tip, an elastic member that applies a force to the protective member, a pressing member movably assembled to the outer cylinder, and is installed between the protective member and the pressing member to maintain the advanced state of the protective member. Or it provides a side knock-type writing instrument comprising a knock means that the protective member is in a state capable of reversing by the elastic force of the elastic member.

The knock means is an operation of projecting on the inner surface of the outer cylinder to be provided with four or more even number guides, a return preventing projection that connects each other by one space between the guide projections, and the number of knock projections corresponding to half of the guide projections formed on the outer peripheral surface. A member and a moving member corresponding to the half of the guide projection is formed on the outer circumferential surface and the moving member is divided into predetermined equal intervals on the end surface to form a triangular tooth.

Description

Side Knock Type Writing Instrument

The present invention relates to a side-knock writing instrument that is configured to protect the tip by moving the protection member in a state where the writing core is fixed to prevent the ball from falling off during the knock operation and to prevent the flow of ink.

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 fixed to the writing cylinder is fixed to the outer cylinder in the state that the tip is exposed and the exposed tip is protected using a lid, the writing core is assembled to the outer cylinder to be movable 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 to move the writing core by pressing the pressing member once to expose the tip portion to the outside of the outer cylinder, and pressing the pressing member again to move the writing core to be inserted into the outer cylinder, the pressing member is the outer cylinder of the opposite side of the tip portion The general knock-type writing instruments installed on the side and the pressing member is divided into the side knock-type writing instruments installed on the side of the middle portion of the outer cylinder.

The knock-type writing instrument is installed on the lower end of the writing core to apply a force to the opposite side of the tip, and once the pressing member is pressed to maintain the moved state and press again to install the knock means.

Since the conventional knock-type writing instruments made as described above are moved to the outside of the outer cylinder or inserted into the outer cylinder by moving the writing core, an impact is applied to the writing core by the elastic force of the spring at the time of exposure and insertion, thereby inserting the tip portion. There is a high possibility of dropping of the ball.

If the ball is dropped as described above, since the writing lead cannot be used, it must be discarded, and ink leakage occurs.

In addition, the conventional knock-type writing instruments are directly impacted by the elastic force on the writing core, so that the ink remaining on the tip portion is directed to one side, whereby the writing feeling is lowered, such as handwriting being broken or the thickness of the line to be written is changed.

An object of the present invention is to solve the problems as described above, the side member of the writing instrument is stopped so that the writing member is stopped so that the protection member is moved to protect or expose the tip portion of the side knock type writing instruments that are not subjected to a direct impact of the elastic force on the tip portion To provide.

1 is an exploded perspective view showing a first embodiment of a side knock writing instruments according to the present invention.

Figure 2 is an assembled cross-sectional view showing a first embodiment of the side knock writing instruments according to the present invention.

Figure 3 is a partially enlarged cross-sectional view showing an enlarged portion of the guide projection of the outer cylinder.

Figure 4 is an assembled cross-sectional view showing a storage state in the first embodiment of the side knock writing instruments according to the present invention.

Figure 5 is an exploded perspective view showing a second embodiment of the side knock writing instruments according to the present invention.

Figure 6 is an assembled cross-sectional view showing a second embodiment of the side knock writing instruments according to the present invention.

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

Figure 8 is an exploded perspective view showing a third embodiment of the side knock writing instruments according to the present invention.

Figure 9 is an assembled cross-sectional view showing a third embodiment of the side knock writing instruments according to the present invention.

The side knock type writing instrument proposed by the present invention is an outer cylinder formed in a predetermined shape, a writing core inserted into the interior of the outer cylinder, the ink is stored therein, and a tip portion in which writing is made at one end thereof; A protective member assembled to be movable in the longitudinal direction to the outer cylinder and protecting the tip of the writing core, an elastic member installed inside the outer cylinder and forcing the opposite direction of the tip to the protective member; The pressing member which is assembled to be movable in the longitudinal direction inside the outer cylinder, and is installed between the protective member and the pressing member, and when the pressing member moves forward toward the tip portion once, the protection member is kept in an advanced state and then moves forward again the second time. The lower surface protection member includes a knock means which is in a state capable of reversing by the elastic force of the elastic member.

The knock means is formed by protruding a predetermined length in the longitudinal direction on a portion of the inner surface of the outer cylinder and divided into at least equal intervals in the circumferential direction and the guide projections are installed in four or more even numbers, one space between the guide projections A return preventing projection formed by protruding from the inner surface of the outer cylinder to a lower level than the guide projection so as to be connected to each other, and installed in contact with the protective member or integrally formed with the protective member, and having a predetermined equal interval in the circumferential direction The operating member is divided into and formed into a number of knock protrusions corresponding to the half of the guide projections, and the contact member is formed to be in contact with the pressing member or formed integrally with the pressing member, the outer peripheral surface at a predetermined equal interval in the circumferential direction It comprises a moving member is divided into the number of the moving projections corresponding to the half of the guide projection is formed The.

The knock protrusion of the operating member is formed at an inclined surface with an end face facing the tip of the writing core as an inclined surface, and is formed at a height that is caught by the return preventing protrusion formed on the outer cylinder when assembled.

The moving projection of the moving member is formed at a height not to be caught by the return preventing projection formed in the outer cylinder when assembled.

The end face of the moving member facing the tip of the writing core is divided into predetermined equal intervals in the circumferential direction to form triangular teeth with the same number as the guide protrusion.

Next, a preferred embodiment of the side knock writing instruments according to the present invention will be described in detail with reference to the drawings.

First, the first embodiment of the side knock writing instruments according to the present invention, as shown in Figures 1 to 3, the outer cylinder 10 is formed into a predetermined shape, and is inserted into the outer cylinder 10 is installed At one end, a writing member 2 having a tip portion 6 installed thereon, and a protective member which is assembled to be movable in the longitudinal direction to the outer cylinder 10 and protects the tip portion 6 of the writing core 2. (50), an elastic member (28) installed inside the outer cylinder (10) and always exerting a force on the opposite side of the tip portion (6) to the protective member (50), and inside of the outer cylinder (10). The pressing member 30 is assembled between the pressing member 30 and the pressing member 30 so as to be movable in the longitudinal direction, and the pressing member 30 moves forward toward the tip part 6 once the protective member is installed. Maintaining the advanced state of the 50 and advances again a second time, the protective member 50 can be reversed by the elastic force of the elastic member 28 described above. Includes knock means a state.

Ink is stored in the writing core 2, and a tip portion 6 in which writing is made and a ball is assembled is installed at one end of the writing core 2.

In addition, as shown in FIG. 1, the writing core 2 is provided with a plurality of fixing blades 4 for fixing the position when assembled to the outer cylinder 10.

As shown in FIG. 2, a cone-shaped cap 26 is assembled at a lower side of the outer cylinder 10, and a stopper 20 having a ring 24 formed at a top thereof to be fitted to a bag or the like. Are assembled.

As shown in FIGS. 1 and 2, the stopper 20 and the cap 26 have female screws 23 and 27 screwed with male threads 17 and 18 formed in the outer cylinder 10, respectively. Is formed.

When screwing the cap 26 to the outer cylinder 10 in the above, as shown in FIG. 2, the fixing blade 4 of the writing lead 2 is sandwiched between the cap 26 and the outer cylinder 10 to be fixed. It is preferable to comprise so that the movement of the writing lead 2 is prevented.

The elastic member 28 is made using a compression coil spring.

As shown in FIGS. 1 and 2, the protective member 50 is inserted into the elastic member 28 and exposed to the outside of the cap 26 assembled to the outer cylinder 10. The exposed portion 52 in which the tip portion 6 of the writing lead 2 is positioned, and the fixing protrusion 53 formed by protruding on the outer circumferential surface of the exposed portion 52 and the one end of the elastic member 28 are supported in contact with each other. Wing grooves 55 extending from the exposed portion 52 with the fixing protrusions 53 interposed therebetween to be integrally formed, and the fixing blades 4 of the writing cores 2 are movable. It is made of a groove forming portion 54 is formed.

In addition, as shown in Fig. 2, the cap 26 is provided with a jaw supported by the other end portion of the elastic member 28 in contact.

As shown in FIG. 2, the elastic member 28 is installed between the jaw formed in the cap 26 and the fixing protrusion 53 formed in the protective member 50.

As shown in FIG. 2, the inner surface of the stopper 20 is formed by protruding a plurality of core fixing pieces 22 into which the upper end of the writing core 2 is inserted and supported.

1 and 2, the pressing member 30 is provided with a pressing surface 34 which is one or more inclined surfaces (preferably two inclined surfaces).

The pressing surface 34 is formed to be inclined toward the cap 20 side (bottom) toward the stopper 20 side (upper side).

Further, as shown in FIGS. 1 and 2, one side surface of the outer cylinder 10 is provided with a button installed to move the pressing member 30 by pushing the pressing surface 34 of the pressing member 30 ( The button hole 16 into which the 36 is inserted is formed.

The button 36 is formed with a plurality of pressing pieces 37 in contact with the pressing surface 34 of the pressing member 30 to a predetermined length, and the outer surface of the end portion of the pressing piece 37 It is inserted into the button hole 16 of one outer cylinder 10, and then formed by protruding the engaging projection 38 so as not to be easily separated.

When the user presses the button 36 in a state in which the pressing member 30 and the button 36 configured as described above are assembled in the outer cylinder 10, respectively, the pressing piece 37 of the button 36 is the pressing member 30. The pressing surface 34 is pressed, and the pressing surface 34 is formed as an inclined surface, so that the pressing member 30 moves toward the cap 26.

In the above, a part of the end surface of the pressing piece 37 of the button 36 in contact with the pressing surface 34 of the pressing member 30 is formed in an inclined surface corresponding to the pressing surface 34 to press the button 36. It is preferable because the pressing force is smoothly transmitted at the time.

In addition, the length of the pressing piece 37 is assembled to form the pressing member 30 so as to take the maximum height of the pressing surface 30, the pressing member 30 when assembled to the outer cylinder (10) This is preferable because it can prevent the positional deviation of.

1 to 3, the knock means is formed to protrude to a predetermined length in the longitudinal direction on a portion of the inner surface of the outer cylinder 10, and divided into four at least equal intervals in the circumferential direction Guide protrusions 12 installed in the dog, and the return preventing projections 13 formed by protruding from the inner surface of the outer cylinder 10 to a lower height than the guide projections 12 so as to filter each other between the guide projections 12 by one space. And, the protective member 50 is installed in contact with the outer peripheral surface is divided into predetermined equal intervals in the circumferential direction, the number of knock projections (48) corresponding to half of the guide projections 12 is formed The member 47 and the pressing member 30 are installed in contact with each other, and the outer circumferential surface is divided into predetermined equal intervals in the circumferential direction so that the number of the moving protrusions 43 corresponding to half of the guide protrusion 12 is provided. It includes a moving member 40 is formed.

The end face 14 of the lower (tip side) 14 and the end face of the guide protrusion 12 of the return preventing protrusion 13 are formed as an inclined surface which is inclined from the side to which the cap 20 is assembled.

The knock protrusion 48 of the operating member 47 forms an end surface 49 facing the tip portion 6 of the writing core 2 opposite to the inclined surface, and is formed in the outer cylinder 10 when assembled. It is formed at a height that is caught by one of the return preventing projections (13).

When the end surface 49 of the knock protrusion 48 is assembled, the end surface 49 is formed as an inclined surface which is inclined toward the assembly of the cap 26 from the side where the stopper 20 is assembled.

In addition, the knock protrusion 48 of the operation member 47 is formed to a width corresponding to the width between the guide projections 12 described above.

The moving projection 43 of the moving member 40 is formed at a height not to be caught by the return preventing projection 13 formed in the outer cylinder 10 when assembled.

In addition, the moving projection 43 of the moving member 40 is formed to a width corresponding to the width between the guide projections 12 described above.

The end face of the moving member 40 toward the tip portion 6 of the writing core 2 is divided into predetermined equal intervals in the circumferential direction and triangular teeth in the same number as the guide protrusion 12 described above. 44).

The teeth 44 are formed such that the vertices of the triangle are positioned adjacent to the guide protrusion 12.

That is, the center line of the moving protrusion 43 of the moving member 40 is configured to have a predetermined eccentricity with the center line of the tooth 44, and the moving protrusion 43 is disposed between the guide protrusions 12. The inclined plane of the teeth 44 inclined in the same direction as the inclined plane of the end face 14 of the guide protrusion 12 and the end face 14 of the return preventing protrusion 13 when the position is moved along the guide protrusion 12. The center line of one tooth 44 is configured to be located.

The moving member 40 is composed of an insertion portion 41 inserted into the pressing member 30, the body portion 42 is formed with the moving projection 43 and the teeth 44.

The trunk portion 42 of the movable member 40 is formed to have an outer diameter not inserted into the pressing member 30 so as to contact the end surface of the pressing member 30.

The operating member 47 is formed so that a part is inserted into the moving member 40 and the knock projection 48 is configured to contact the end surface of the moving member 40.

In addition, as shown in Figures 1 and 2, the inner surface of the outer cylinder 10 is formed by protruding the fixing ring 15 in contact with the upper end of the guide projection 12 and the return preventing projection (13). .

In addition, the pressing member 30 protrudes on the outer circumferential surface to form a fixing ring 32.

As described above, fixing rings 15 and 32 are formed on the inner surface of the outer cylinder 10 and the outer circumferential surface of the pressing member 30, respectively, and a spring 29 is installed between both fixing rings 15 and 32. In this case, since the elastic force is always applied to the stopper 20 toward the pressing member 30 to prevent unnecessary shaking of the pressing member 30.

The pressing member 30, the moving member 40, the operation member 47 and the protective member 50 are each formed in a hollow so that the writing core 2 is inserted therein.

Next, the assembly method in the first embodiment of the side knock writing instruments according to the present invention configured as described above will be described.

First, the spring 29 and the pressing member 30 are inserted into the outer cylinder 10 toward the stopper 20 to be assembled, and the pressing piece 37 presses the button 36 to the pressing surface 34 of the pressing member 30. It is assembled to the button hole 16 of the outer cylinder 10 so that it may contact with.

When assembled as described above, the detachment of the stopper 20 of the pressing member 30 toward the assembly side is prevented by the pressing piece 37 of the button 36, and the cap of the spring 29 and the pressing member 30 is prevented. Departure to the side to which the 26 is assembled is prevented by the fixing ring 15, 32 and the guide projection 12, the pressing member 30 is plug 20 by the elastic force of the spring (29) Is placed with force applied to the assembly.

Subsequently, the stopper 20 is assembled to the outer cylinder 10, and the moving member 40 and the operating member 47 are inserted into the outer cylinder 10 on the side where the cap 26 is assembled, and then the writing lead 2 is described. The penetrating penetrating the operating member 47, the moving member 40 and the pressing member 30 is inserted into the outer cylinder 10, and the protective member 50 in the wing groove 55, writing core (2) It is inserted into the writing lead (2) so that the fixed blade (4) is inserted.

Finally, the cap 26 is assembled to the outer cylinder 10 in the state where the elastic member 28 is inserted into the protective member 50 inserted into the writing lead 2.

Next, the operation process in the first embodiment of the side knock writing instruments according to the present invention assembled as described above will be described.

First, when the user presses the button 36, as the pressing piece 37 of the button 36 presses the pressing surface 34 of the pressing member 30, which is an inclined surface, the pressing member 30 is connected to the cap 26. Then, the moving member 40, the operating member 47, and the protective member 50 are moved to the side where the cap 26 is assembled, that is, the tip part 6 of the writing lead 2.

At this time, the writing core 2 is fixed by the outer cylinder 10 and the cap 26 because the fixed blade 4 is maintained in place without moving.

Since the protective member 50 and the operating member 47 are applied to the stopper 20 by the elastic force of the elastic member 28, the knock protrusion 48 of the operating member 47 has a shape corresponding to each other. The end surface 49 and the teeth 44 of the moving member 40 move in contact with each other.

As described above, when the movable member 40 moves, the end surface 49 of the knock protrusion 48 which is in contact with the inclined surface of the teeth 44 of the movable member 40 has a cap more than the inclined end of the guide protrusion 12 described above. Moving toward (26), since the elastic force of the elastic member 28 acts on the stopper 20 toward the operation member 47, the knock projection 48 is the end surface of the guide projection 12, which is inclined again and the return preventing projection. While moving along the end face 14 of 13, the neighboring guide protrusion 12 is passed over, and the operating member 47 naturally rotates at a predetermined angle.

Therefore, the knock protrusion 48 that is advanced (moved toward the cap) along the guide protrusions 12 in which the return preventing protrusions 13 are not formed enters between the guide protrusions 12 in which the return preventing protrusions 13 are formed and knocks. The projection 48 is caught by the end face 14 of the return preventing projection 13 to prevent the return of the operating member 47.

When the return of the operating member 47 is prevented as described above, the protective member 50 forcibly moved toward the cap 26 by the operating member 47 is also maintained and the end of the protective member 50 is moved. The portion is exposed to the outside of the cap 26 to keep the storage state to wrap around the tip portion 6 of the writing lead (2) without writing (see Fig. 4).

At this time, since the moving projection 43 of the moving member 40 is not caught by the return preventing projection 13, the moving member 40 can move freely.

When the user presses the button 36 again to take notes in the storage state as described above, the pressing piece 37 of the button 36 presses the pressing surface 34 of the pressing member 30 which is an inclined surface. The member 30 moves to the side where the cap 26 is assembled, and in turn the moving member 40 moves to the side where the cap 26 is assembled.

When the moving member 40 moves as described above and the inclined surface of the teeth 44 of the moving member 40 and the end surface 49 of the knock protrusion 48 come into contact with each other, the operating member 47 starts to move. .

As described above, when the operating member 47 moves and the end surface 49 of the knock protrusion 48 moves toward the cap 26 more than the end portion of the guide protrusion 12, the operating member 47 is moved to the operating member 47. Since the elastic force of the elastic member 28 acts toward the stopper 20, the knock protrusion 48 moves over the end face of the guide protrusion 12, which is a slope again, and then passes over the neighboring guide protrusion 12, and naturally the operating member. 47 rotates by a predetermined angle.

Therefore, the knock protrusion 48 advanced along the guide protrusions 12 on which the return preventing protrusions 13 are formed enters between the guide protrusions 12 on which the return preventing protrusions 13 are not formed, and the operation member 47 The elastic force of the elastic member 28 is returned.

When the operating member 47 is returned as described above, the protective member 50 forcibly moved toward the cap 26 by the operating member 47 is also reversed (moved toward the stopper) by the elastic force of the elastic member 28. , The tip portion 6 of the writing lead 2 is exposed to the outside than the end of the protective member 50 (see Fig. 2).

As described above, as the user presses the button 36 for the first time and the second time, the user alternates between the storage state (shown in FIG. 4) and the writing state (shown in FIG. 2) in which writing can be performed.

And the second embodiment of the side knock writing instruments according to the present invention, as shown in Figure 5 and 6, the pressing member 30 and the moving member 40 formed integrally with the pressing member 30 of the first embodiment ( 60) and a protection member 70 in which the operation member 47 and the protection member 50 of the first embodiment are integrally formed.

The pressing member 60 is formed with a pressing surface 64 which is an inclined surface similarly to the pressing member 30 of the first embodiment.

In addition, the pressing member 60 is formed by protruding the fixing ring 62, and although not shown in the drawing, it is also possible to install the spring 29 as in the first embodiment.

The protection member 70 is formed with a fixing projection 73 is supported the elastic member 28, similar to the protection member 50 of the first embodiment.

In addition, the second embodiment of the side knock writing instruments according to the present invention does not form a fixed blade 4 formed on the writing core 2 of the first embodiment, as shown in Figs. The upper end of the writing lead 2 is inserted into and supported by the plurality of core fixing pieces 22 protruding from the inner surface of the 20).

The core fixing piece 22 is configured to form an inner surface having a size corresponding to the diameter of the writing core 2, and preferably about 3 to 6 pieces are formed.

In addition, the core fixing piece 22 is formed in a shape in which the size of the inner surface gradually decreases as it enters inward from the end of the side assembled to the outer cylinder 10 so that the writing core 2 can be naturally inserted. If one writing lead (2) is inserted to the inside, the size of the inner surface is set to ensure a fixed.

Although the writing core 2 is fixed by forming the core fixing piece 22 on the inner surface of the stopper 20, the writing core 2 is formed on the inner surface of the stopper 20 without separately forming the core fixing piece 22. It is also possible to form a shape corresponding to the outer surface of the writing core 2 is assembled to the inner surface of the stopper 20 to be fixed.

In the second embodiment of the side knock writing instruments according to the present invention, as shown in Figs. 5 and 6, the knock means is formed to protrude to a predetermined length in the longitudinal direction to a portion of the inner surface of the outer cylinder 10 and the circumference Guide projections 12 installed at four or more even numbers by dividing at predetermined equal intervals in the direction, and guide projections 12 from the inner surface of the outer cylinder 10 so as to filter each other between the guide projections 12 one by one. The anti-return projection 13 formed by protruding to a lower height and the outer circumferential surface of the protection member 70 are divided into predetermined equal intervals in the circumferential direction at a number corresponding to half of the guide protrusion 12. The knock projection 76 is formed, and the moving projection 66 is formed on the outer circumferential surface of the pressing member 60 at a predetermined equal interval in the circumferential direction and formed in the number corresponding to half of the guide protrusion 12. And, the tip portion 6 side of the pressing member 60 It comprises a triangular tooth 67 formed in the same number as the above-described guide projections 12 by dividing at predetermined equal intervals in the circumferential direction on the end face facing.

In the above description, the knock protrusion 76, the moving protrusion 66, and the teeth 67 are implemented in the same configuration as the knock protrusion 48, the moving protrusion 43, and the teeth 44 of the first embodiment, respectively. It is possible.

Also in the above-described second embodiment, the present invention can be implemented in the same configuration as the above-described first embodiment except for the above-described configuration, and thus a detailed description thereof will be omitted.

The end surface 77 of the knock protrusion 76 is formed in an inclined surface similarly to the end surface 49 of the knock protrusion 48 of the first embodiment.

The upper end of the protective member 70 is formed so that a portion is inserted into the lower portion of the pressing member 60, the knock projection (76) formed on the end surface of the pressing member 60 teeth 67 ).

In addition, in the second embodiment, the fixing ring 15 protrudes to the inner surface of the outer cylinder 10 in the first embodiment so that the moving projection 67 of the pressing member 60 inserted from above is not caught. It is preferable not to form).

Accordingly, when the spring 29 is inserted in the second embodiment, the fixing ring 62 formed on the outer circumferential surface of the pressing member 60 and the guide protrusion 12 formed on the inner surface of the outer cylinder 10 are provided. The spring 29 is supported by the upper surface of the.

Next, the assembly method in the second embodiment of the side knock writing instruments according to the present invention configured as described above will be described.

First, the pressing member 60 is inserted into the outer cylinder 10 toward the stopper 20 to be assembled, and the button 36 is pressed so that the pressing piece 37 contacts the pressing surface 64 of the pressing member 60. 10) to the button hole 16 of the assembly.

When assembled as described above, the detachment of the stopper 20 of the pressing member 60 toward the assembly side is prevented by the pressing piece 37 of the button 36, and the cap 26 of the pressing member 60 is assembled. Departure to the side of the side is prevented by the guide projection (12).

Subsequently, the stopper 20 is assembled to the outer cylinder 10, and the protection member 70 is inserted into the outer cylinder 10 from the side on which the cap 26 is assembled, and then the writing lead 2 is attached to the protective member ( 70) and penetrating through the pressing member 60 is inserted into the core fixing piece 22 of the stopper (20).

Finally, the cap 26 is assembled to the outer cylinder 10 while the elastic member 28 is inserted into the protective member 70 inserted into the writing lead 2.

Therefore, in the second embodiment, as compared with the first embodiment, the number of parts is reduced, so that assembly work is simple and productivity is improved.

Next, the operation process in the second embodiment of the side knock writing instruments according to the present invention assembled as described above.

First, when the user presses the button 36, as the pressing piece 37 of the button 36 presses the pressing surface 64 of the pressing member 60, which is an inclined surface, the pressing member 60 is connected to the cap 26. While moving toward the assembled side, the protective member 70 is moved toward the side where the cap 26 is assembled, that is, the tip portion 6 of the writing lead 2.

At this time, since the writing core 2 is fixed by the core fixing piece 22 of the stopper 20, the writing core 2 is kept in position without moving.

Since the protection member 70 is a state in which a force is applied toward the stopper 20 by the elastic force of the elastic member 28, the protection member 70 is pressed against the end surface 77 of the knock protrusion 76 of the protection member 70 having a shape corresponding to each other. The teeth 67 of the member 60 move in contact with each other.

As described above, when the pressing member 60 moves, the end surface 77 of the knock protrusion 76 which is in contact with the inclined surface of the teeth 44 moves toward the cap 26 more than the inclined end of the guide protrusion 12 described above. When the elastic force of the elastic member 28 acts toward the stopper 20 on the protective member 60, the knock protrusion 76 is again an inclined surface and an end surface of the return preventing projection 13. Moving along (14), the neighboring guide projections 12 are burnt out, and the protection member 70 naturally rotates at a predetermined angle.

Therefore, the knock protrusion 76 advanced (moved toward the cap) along the guide protrusions 12 without the return preventing protrusions 13 formed therein enters between the guide protrusions 12 having the return preventing protrusions 13 and knocks. The projection 76 is caught by the end surface 14 of the return preventing projection 13 to prevent the return of the protective member 70.

When the return of the protective member 70 is prevented as described above, the end of the protective member 70 is exposed to the outside of the cap 26 to wrap around the tip portion 6 of the writing lead 2 to store without writing The state is maintained.

At this time, since the moving projection 66 of the pressing member 60 is not caught by the return preventing projection 13, the pressing member 60 can move freely, but the moving distance of the tooth 67 is in contact with the knock projection 76. Since the pressing surface 64 is short from the point to the point of contact with the pressing piece 37 of the button 36, the shaking of the pressing member 60 is small.

And in order to prevent the shaking of the pressing member 60, it is preferable to install the spring 29 between the fixing ring 62 and the guide projection (12).

When the user presses the button 36 again in order to write in the storage state as described above, the pressing piece 37 of the button 36 presses the pressing surface 64 of the pressing member 60 which is an inclined surface, When the member 60 is moved to the side where the cap 26 is assembled, and the pressing member 60 is moved so that the inclined surface of the tooth 67 and the end surface 77 of the knock protrusion 76 come into contact with each other, the protection described above. Member 70 begins to move.

As described above, when the protection member 70 moves and the end surface 77 of the knock protrusion 76 moves toward the cap 26 more than the end portion of the guide protrusion 12, the protection member 70 is moved to the protection member 70. Since the elastic force of the elastic member 28 acts toward the stopper 20, the knock protrusion 76 moves over the end face of the guide protrusion 12, which is an inclined surface, and passes over the neighboring guide protrusion 12, and naturally protects the member. 70 rotates at a predetermined angle.

Therefore, the knock protrusion 76 advanced along the guide protrusions 12 on which the return preventing protrusions 13 are formed enters between the guide protrusions 12 on which the return preventing protrusions 13 are not formed, and the protection member 70 The elastic force of the elastic member 28 is returned.

When the protection member 70 is returned (moved toward the stopper) as described above, the tip portion 6 of the writing lead 2 is exposed outward from the end of the protection member 70 (see FIG. 6). .

As described above, in the second embodiment as described above, the user alternates between the storage state in which writing instruments can be stored and the writing state in which writing can be performed as the user presses the button 36 first and second times. Is changed.

And the third embodiment of the side knock writing instruments according to the present invention, as shown in Figure 8 and 9, the separation prevention member 80 is inserted into the outer cylinder 10 and prevents the separation of the elastic member 28 It includes.

The separation preventing member 80 is formed in a ring shape, and is inserted into the horizontal portion caught on the end surface of the outer cylinder 10 and the inner surface of the outer cylinder 10 to support the end surface of the elastic member 28. It consists of vertical parts.

That is, the separation preventing member 80 is formed in a ring shape consisting of a cross-section of the 'b' shape.

In the third embodiment, in order to secure a space in which the elastic member 28 is installed, the fixing protrusion 73 formed on the protective member 70 is provided in the first and second embodiments. It is preferable to form it by moving upwards rather than the fixing projections 53 and 73 of an example.

Also in the above-described third embodiment, the present invention can be implemented in the same configuration as the above-described first and / or second embodiment except for the above-described configuration, and thus detailed description thereof will be omitted.

In the third embodiment configured as described above, as the separation of the elastic member 28 and the protection member 70 assembled in the outer cylinder 10 is prevented by the separation preventing member 80, the cap 26 is assembled. You do not have to do.

Therefore, when the cap 26 is not assembled, it is not necessary to form the male screw 18 in the outer cylinder 10, and it is aesthetically pleasing to form the end shape of the protective member 70 in a cone shape similar to the cap 26. Do.

Next, the method of assembling in the third embodiment of the side knock writing instrument according to the present invention constituted as described above is the same as the above-described second embodiment, the pressing member 60, the button ( 36), the stopper 20, the protective member 70 is inserted in sequence.

Then, the above-mentioned separation preventing member 80 is assembled to the outer cylinder 10 in the state where the elastic member 28 is inserted into the protection member 70 inserted into the writing lead 2, and the cap 26 is assembled. Assembled in the outer cylinder (10).

Therefore, even in the third embodiment, as compared with the first embodiment, the number of parts is reduced, so that assembly work is simple and productivity is improved.

Since the operation process in the third embodiment of the side knock writing instruments according to the present invention assembled as described above is made in the same manner as the second embodiment described above, a detailed description thereof will be omitted.

Although the embodiment of the side knock writing instruments according to the present invention has been described above, the present invention is not limited thereto and may be applied to general knock writing instruments, and may be applied to writing instruments other than ballpoint pens.

In the above, a preferred embodiment of the side knock writing instrument according to the present invention has been described, but the present invention is not limited thereto, and various modifications can be made 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 side-knock writing instrument according to the present invention made as described above, since the protection member is moved back and forth while the writing core equipped with the tip is fixed to protect the tip of the writing core, the impact caused by the elastic force of the elastic member acts directly on the writing core. I never do that.

Therefore, there is no risk that the ball inserted into the tip may fall off, and there is no breakage of the handwriting or a change in line thickness that occurs when ink flows to one side.

Claims (7)

An outer cylinder formed in a predetermined shape, The writing core is inserted into the inside of the outer cylinder is installed, the ink is stored therein and the tip portion is installed at one end of the writing, A protective member assembled to the outer cylinder so as to be movable in the longitudinal direction and protecting the tip of the writing lead; An elastic member which is installed inside the outer cylinder and always exerts a force on the opposite side of the tip to the protective member; A pressing member assembled to be movable in the longitudinal direction inside the outer cylinder; It is installed between the protection member and the pressing member, and if the pressing member moves forward toward the tip portion once, the protection member is kept in an advanced state, and if it is moved again the second time, the protection member can move backward by the elastic force of the elastic member. Side knock writing instruments comprising a knock means. According to claim 1, wherein the writing core is formed with at least one fixing wing for fixing the position when assembled to the outer cylinder, At the bottom of the outer cylinder is a cone-shaped cap is assembled is formed a jaw for supporting the lower end of the elastic member, The protective member is inserted into the elastic member and exposed to the outside of the cap assembled to the outer cylinder, the exposed portion where the tip portion of the writing core is located and the upper end of the elastic member is supported in contact with the outer peripheral surface Side knock type consisting of a groove forming portion is formed integrally extending from the exposed portion with the fixing protrusion formed to protrude in the said projection and the wing groove is formed integrally formed and the fixed wing of the writing lead is movable. Writing utensils. According to claim 2, wherein the knock means is formed to protrude at a predetermined length in the longitudinal direction on a portion of the inner surface of the outer cylinder, divided into predetermined equal intervals in the circumferential direction is installed in an even number of four or more and the lower end surface is inclined surface Guide protrusions formed with A return preventing protrusion formed by protruding from the inner surface of the outer cylinder to a lower level than the guide protrusion so as to connect each other by one space between the guide protrusions, and forming a lower end surface as an inclined surface; The outer circumferential surface is divided into predetermined equal intervals in the circumferential direction, and the upper end surface is formed as an inclined surface in the number corresponding to half of the guide projections, and when assembled, a knock protrusion having a height that is applied to the return preventing projection of the outer cylinder is formed An operating member assembled to the outer cylinder to be in contact with the upper surface of the protective member, The outer circumferential surface is divided into predetermined equal intervals in the circumferential direction to form moving projections having a height not to be caught by the return preventing projections of the outer cylinder when assembled to the number corresponding to half of the guide projections. A side knock type writing instrument comprising a moving member assembled to an outer cylinder to form a sawtooth in the same number and contact the pressing member. According to claim 1 or claim 2, wherein the pressing member is formed with a pressing surface which is at least one inclined surface inclined from the lower side to the upper side, One side surface of the outer cylinder forms a button hole, The button hole of the outer cylinder is installed so as to move the pressing member by pushing the pressing surface of the pressing member, the button contacting the pressing surface of the pressing member and the outer surface of the end forming a plurality of pressing pieces formed by protruding engaging projections Side knock writing instruments to insert. The cone-shaped cap of claim 1, wherein a jaw is formed below the outer cylinder to support the lower end of the elastic member. On the upper side of the outer cylinder, a stopper is formed on the inner surface of the plurality of core fixing pieces to which the upper end of the writing core is inserted and fixed is assembled, The protective member is formed with a fixing protrusion projecting on the outer circumferential surface of the upper end of the elastic member in contact with the support, The pressing member forms a pressing surface which is one or more inclined surfaces inclined from the bottom to the top, One side surface of the outer cylinder forms a button hole, The button hole of the outer cylinder is installed so as to move the pressing member by pushing the pressing surface of the pressing member, the button contacting the pressing surface of the pressing member and the outer surface of the end forming a plurality of pressing pieces formed by protruding engaging projections Side knock writing instruments to insert. The method of claim 1, wherein the lower portion of the outer cylinder is assembled with a ring-shaped separation preventing member for supporting the lower end of the elastic member, On the upper side of the outer cylinder, a stopper is formed on the inner surface of the plurality of core fixing pieces to which the upper end of the writing core is inserted and fixed is assembled, The protective member is formed with a fixing protrusion projecting on the outer circumferential surface of the upper end of the elastic member in contact with the support, The pressing member forms a pressing surface which is one or more inclined surfaces inclined from the bottom to the top, One side surface of the outer cylinder forms a button hole, The button hole of the outer cylinder is installed so as to move the pressing member by pushing the pressing surface of the pressing member, the button contacting the pressing surface of the pressing member and the outer surface of the end forming a plurality of pressing pieces formed by protruding engaging projections Side knock writing instruments to insert. According to claim 5 or 6, wherein the knock means is formed to protrude a predetermined length in the longitudinal direction on a portion of the inner surface of the outer cylinder is divided into a predetermined equal interval in the circumferential direction is provided with four or more even number Guide protrusion, A return preventing protrusion formed by protruding from the inner surface of the outer cylinder to a lower level than the guide protrusion so as to connect each other by one space between the guide protrusions; A knock protrusion formed on the outer circumferential surface of the protective member at a predetermined equal interval in the circumferential direction and formed in the number corresponding to half of the guide protrusion; A moving protrusion formed on the outer circumferential surface of the pressing member at a predetermined equal interval in the circumferential direction and formed in the number corresponding to half of the guide protrusion; Side knock writing instruments comprising a triangular tooth formed in the same number as the guide projections by dividing the lower end of the pressing member at predetermined equal intervals in the circumferential direction.