KR950001252Y1 - Writing apparatus - Google Patents

Abstract

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Description

Writing utensils

1 is a longitudinal sectional view showing the configuration of the first embodiment of the present invention writing instrument.

FIG. 2 (a) is an explanatory diagram showing the main components of the first embodiment shown in FIG.

2 (b) is an explanatory diagram showing another example of the main parts.

Figure 3 is a longitudinal sectional view showing the configuration of a second embodiment of the present invention writing instrument.

4 is a sectional view showing another example of the friction generating member in the second embodiment.

5 (a) and 5 (b) are front and cross-sectional views of the main portion of the intermediate shaft of the other friction generating member embodiment in the second embodiment, respectively.

6 is a longitudinal sectional view showing still another example of the friction generating member in the second embodiment;

Figure 7 is a longitudinal cross-sectional view showing the configuration of the third embodiment of the present invention writing instrument.

8 is a longitudinal sectional view showing the configuration of the fourth embodiment of the present invention writing instrument.

9 is a partially developed view of the anterior inner cylinder showing the relationship between the ramp and the protrusion in the third embodiment shown in FIG.

FIG. 10 is a partially developed view of the front inner cylinder showing the relationship between the ramp and the protrusion in the fourth embodiment shown in FIG.

* Explanation of symbols for main parts of the drawings

1: front outer cylinder 2: front inner cylinder

2A: rear end shaft portion 2a: annular locking portion

2B: Blocking slit 2C: Opening slit

3: writing member 4: back inner tube

5: rear outer cylinder 6: rotational-axial movement conversion mechanism

7: ramp 7A: start end

7B: terminal 7 ₁ : first ramp

7 ₁ A: Start end 7 ₁ B: End part

7 ₂ : 2nd ramp 7 ₂ A: Start end

7 ₂ B: Terminal part 7 ₃ : First ramp

7 ₃ A: Start end 7 ₃ B: End part

7 ₄ : Second slope road 7 ₄ A: Start end

7 ₄ B: Termination 8: Protrusion

10: drive member 10a: projection

11 axial groove 12 stone

13A: friction generating member

The present invention relates to a writing instrument having a mechanism for converting a rotation of the rear outer cylinder into an axial movement.

As a conventional writing instrument of this kind, for example, the ball pen is used to squeeze the front end of the writing member corresponding to the rotational direction by rotating the rear outer cylinder, but in the pencil pencil, writing is separate from the writing member. The front end of the member is rotated by the rear outer cylinder to protrude, and then the pen core transmitting mechanism is operated by a separate knock operation to draw the pen core from the front end of the writing member.

In the conventional writing instrument configured as described above, there is a drawback that the rotational-axial movement conversion mechanism is complicated in the case of the ball pen, and in addition to the rotational-axial movement conversion mechanism in the case of the pencil, the knocking operation is performed. The necessity of a pulsing mechanism to operate is not only complicated, but also has a drawback in that the operation has to be changed from rotation to knock operation.

The present invention is devised to solve the above drawbacks, the drive member is attached to the front outer cylinder and the front inner cylinder so that the rear outer cylinder can be attached to the removable but can not be installed in the axial movement, the A writing member is inserted into the rear inner cylinder inserted into the front inner cylinder, and the rear inner cylinder and the driving member are formed with axial grooves and protrusions engaged with each other, and both ends of the front inner cylinder and the rear inner cylinder are both end portions and On the other hand, a ramp is formed as a terminal part, while the other side has a structure in which a protrusion is fitted to slide on the inclined path.

Hereinafter, an embodiment of the present invention will be described.

1 is a longitudinal cross-sectional view showing the configuration of the first embodiment of the writing instrument of the present invention, which is an example of applying the present invention to a ball pen.

In the drawing, reference numeral 1 is a front outer cylinder, 2 is a front inner cylinder installed in the front outer cylinder 1, 16 is a rubber bushing inserted between the front end of the front outer cylinder 1 and the front inner cylinder 2, and 3 is a front inner cylinder ( 2) the writing member for the ball pen, 2A is the rear end shaft diameter portion of the front inner cylinder (2), 2a is an annular locking portion formed on the outer periphery of the rear end shaft diameter portion (2A), 10 is inside the front portion and the central portion, respectively A rear end shaft diameter portion of the front inner cylinder (2) as a driving member having a projection (10a) engaged with the annular engaging portion (2a) of the front inner cylinder (2) and a plurality of protrusions 12 protruding inwardly. Screw so that the rear outer cylinder 5 can be attached to and detached from the front outer cylinder 1 in which the projection 10a is engaged with the annular engaging portion 2a of the front inner cylinder 2 sandwiched between (2A) and the front outer cylinder 1. The drive member 10, which is to be attached by attachment, can be freely rotated but fitted in a axial direction. The annular engaging portion 2a and the projection 10a may be formed in the driving member 10 and the front inner cylinder 2, respectively, or may be formed in the driving member 10 and the front outer cylinder 1, respectively.

Then, the writing member 3 is fixed to the rear inner cylinder 4 installed in the front inner cylinder 2.

On the other hand, in the inner cylinder 2, both end portions are formed in the circumferential direction, and inclined holes 7 are formed so as to have the starting end portion 7A and the end portion 7B, and the rear inner cylinder 4 has the inclined holes. The protrusion 8 which is engaged in sliding contact with (7) is formed. Here, these inclined holes 7 and the projections 8 may be formed in the rear inner cylinder 4 and the front inner cylinder 2, respectively, unlike the above. And the hole diameter is narrowed in order to improve the feeling when the protrusion part 8 enters or exits the starting end part 7A and the end part 7B of the said inclination hole 7.

In addition, the start end portion 7A of the inclined hole 7 is opened to the rear via the blocking slit 2B as shown in FIG. 2A, whereby the blocked slit 2B is opened by the open end. The protrusion 8 is pushed through and fitted into the start end 7A. In this case, although the protrusion 8 is easily fitted to the start end 7A, once the protrusion 8 is fitted to the start end 7A, it does not escape to the rear. And as shown in Fig. 2 (b), even if the start end portion 7A of the inclined hole 7 is opened to the rear via the blocking slits 2C and 2B, the same action is performed.

In addition, a plurality of axial grooves 11 are formed at the outer circumference of the rear inner cylinder 4, and a plurality of protrusions 12 fitted to the axial grooves 11 are formed at the inner circumference of the driving member 10. If the number of the axial grooves 11 is slightly larger than the number of the protrusions 12, both of them fit more easily.

Here, the axial groove 11 and the projection 12 may be formed in the driving member 10 and the rear inner cylinder 4 differently from the above, and the number of the axial groove 11 and the projection 12 is one side. More and less on the other side, the fitting can be done quickly.

Next, the operation of the first embodiment configured as described above will be described.

Rotating the rear outer cylinder 5 causes the rear inner cylinder 4 and the writing pen 3 for the ball pen to rotate, so that the protrusion 8 of the rear inner cylinder 4 emerges from the start end 7A of the front inner cylinder 2. Advancing the writing portion 3a of the writing pen 3 for ball pen while advancing along the inclination hole 7, the front outer tube (where the projection 8 is inserted into the end portion 7B of the inclination hole 7) From the front end of 1), the writing portion 3a of the writing pen 3 for ball pen protrudes to be in a state capable of writing.

Subsequently, when the rear outer cylinder 5 is rotated in reverse, the rear inner cylinder 4 and the writing pen 3 for the ball pen are reversed, so that the protrusion 8 of the rear inner cylinder 4 is terminated at the end 7B of the front inner cylinder 2. Where the projection 8 is cut into the beginning end 7A of the inclined hole 7 by exiting from the back and moving backward along the inclined hole 7 to reverse the writing portion 3a of the writing pen 3 for ball pen. In the front outer cylinder 1 is drawn from the front end, the writing portion (3a) of the writing pen 3 for the ball pen is drawn.

3 is a longitudinal cross-sectional view showing the configuration of a second embodiment of the present invention, which is also an embodiment in which the present invention is applied to a ball pen, which is different from the first embodiment shown in FIG. The annular locking member 14 is used instead of the locking means by the shape locking portion 2a and the projection 10a.

That is, while the annular groove (2b) is formed on the outer periphery of the front inner cylinder (2) is attached to the annular engaging member 14, which is able to rotate relative to the front inner cylinder (2) of the annular groove (2b), A projection 10a is formed near the front end of the driving member 10, and the projection 10a is fitted with the annular groove 14a formed on the outer circumference of the annular locking member 14, thereby driving the driving member ( 10 is integrally operated with the annular locking member 14. Here, the drive member 10 is attached so as to rotate freely with respect to the front inner cylinder 2 but not move in the axial direction.

On the other hand, since the driving member 10 is made of metal and the front inner cylinder 2 is made of plastic, it may be difficult to be attached so that both of them can be directly rotated, so that the plastic annular locking member 14 fixed to the driving member 10 is fixed. By using this, it is possible to reliably freely rotate between the drive member 10 and the front inner cylinder 2, but not to move in the axial direction.

In addition, in the second embodiment, an O-ring 13A, which is a friction generating member, is installed adjacent to the annular locking member 14 in the annular groove 2b, and the O-ring 13A is the driving member 10. And between the front inner cylinder 2 and the frictional force is generated between the drive member 10 and the front inner cylinder (2). Therefore, when the projection 8 is moved along the inclined hole 7 by rotating the rear outer cylinder 5, the user is given a sense of weight and stability in the rotation operation, as a result, can feel a sense of luxury.

The position of the O-ring 13A may be arranged on the sliding contact surface of the drive member 10 and the front inner cylinder or the sliding contact surface of the front inner cylinder 2 and the rear inner cylinder 4, although not necessarily the annular groove 2b. .

4 to 6 show various examples of the friction generating member of the second embodiment, in which FIG. 4 is a metal sheet member 13b installed in the annular groove 2b. The member 13b pushes the annular locking member 14 toward the rear in the axial direction to increase the force acting on the surface where the rear surface of the annular locking member 14 and the annular groove 2b are in contact with the rear surface. Therefore, friction force is generated between these surfaces.

Here, a leaf spring may be provided instead of the metal sheet member 13B.

5 shows an example in which the slit 4a and the protrusion 13C are formed at a portion where the rear inner cylinder 4 is inserted into the front inner cylinder 2, and the protrusion 13C having the elasticity by the slit 4a is the front. By protruding the inner surface of the inner cylinder 2, a frictional force is generated between the front inner cylinder 2 and the rear inner cylinder 4.

6 is an example in which a protrusion 13D is formed at the rear end of the front inner cylinder 2, and the protrusion 13D protrudes with respect to the inner surface of the driving member 10 so as to have elasticity by the slit 2D. The friction force is generated between the 2) and the drive member 10.

7 is a longitudinal cross-sectional view showing the configuration of a third embodiment of the writing instrument of the present invention, the present invention is applied to the mechanical pencil, the third embodiment is given the same number for the same member as in the above embodiment The description is omitted.

The writing member 3 in the third embodiment shown in FIG. 7 is composed of a writing section (the front end pipe of the slide; 3a), the slider 3b, the chuck 3c, the chuck ring 3d, and the chuck tightening spring 3e. ), A cushion spring 3f, and a lead case 3g, to constitute a known lead delivery mechanism. And the return spring 15 is arrange | positioned from the rear end of the front inner cylinder 2 to the rear inner cylinder 4, and pushes the rear inner cylinder 4 to the axial direction rearward with respect to the front inner cylinder 2. As shown in FIG.

8 is a longitudinal sectional view showing the configuration of the fourth embodiment of the present invention. The fourth embodiment differs from the third embodiment in that the writing portion ((front pipe of the slider; 3a) of the writing member 3 is different from the third embodiment. And the slider 3b, the chuck 3c, the chuck ring 3d, the chuck tightening spring 3e and the lead case 3g are integrally formed.

FIG. 9 is a view showing the relationship between the inclined path and the projection when applied to the mechanical pencil shown in FIG. 7 as the third embodiment, in which arrows indicate the axial direction of the writing instrument.

Ramp from the ninth Figure 7 is a first ramp ₍₇₁₎ and the second as composed of a ramp _(72), the leading-end part of the first ramp _{(71) (71} A) and a second ramp (7 ₂₎ is such that the second ramp ₍₇₂₎ is connected to the installation on the other end of the first ramp ₍₇₁₎ so that the leading end portion ₍₇₂ a).

In the third and fourth embodiments configured as described above, by rotating the rear outer cylinder 5, the rear inner cylinder 4 and the writing pencil 3 for the mechanical pencil are rotated so that the projection 8 has a first inclined hole 7. _When it moves to the intermediate part 7 1C of ₁ ), the chuck | zipper 3c of the pencil pencil writing member 3 advances, and it will send a pen core. Then, the rear outer cylinder 5 is rotated against the spring force of the spring, and the projection 8 is moved until it reaches the stop portion 7 ₁ B of the first inclined hole 7 ₁ . By pushing 3b forward, the writing portion (front pipe of the slider; 3a) is pushed out from the front end of the front outer cylinder 1. On the other hand, when the hand is released from the rear outer cylinder 1, the writing member 3 is pushed back in the axial direction by the restoring force of the chuck tightening spring 3c and the return spring 15, so that the writing unit 3a is pushed out. If it is kept as it is, the projection 8 will return to the position of the start end portion 7 ₁ A = 7 ₂ A, thereby allowing writing in this state.

On the other hand, in order to draw the core, one pipe 3a of the slider which is a writing part by reciprocating the back outer cylinder 5 between the start part 7 ₁ A and the middle part 7 ₁ C of the 1st inclination hole 7 ₁ . You can send the lead from.

Here, the range indicated by A in FIG. 9 is a range in which the core is sent out by the predetermined length from the front pipe 3a.

Then, in order to draw the front pipe 3a into the front outer cylinder 1, the rear outer cylinder 5 is reversed so that the protrusion 8 is inserted into the end portion 7 ₂ B of the second inclined hole 7 ₂ . When the front pipe 3a is pressed toward the front outer cylinder 1 in the state, since the chuck 3c holds the pen core in an open state, the front pipe 3a can move in the axial direction, and the front outer cylinder 1 It will be housed inside.

FIG. 10 shows the relationship between the inclined ramp and the protrusion in the case of the fourth embodiment mechanical pencil shown in FIG. 8, wherein the inclined ramp 7 includes a first inclined ramp 7 ₃ and a second inclined ramp 7 ₄ . as, the end part of the first ramp _{(73), (73} B), the leading-end portion ₍₇₄ a) a first ramp ₍₇₃₎ and the second ramp so that the second ramp _{(74) (74)} Is connected.

In this way, when the rear outer cylinder is rotated, the sharpening pencil writing member 3 moves forward to push the writing instrument (front pipe of the slider; 3a) so that the protrusion 8 is formed of the first inclined hole 7 ₃ . The writing portion 3a is pushed out from the front of the front outer cylinder 1 at the position interposed into the start end portion 7 ₃ B, and is retained. In this state, the rear outer cylinder 5 is held by the second inclination hole 7 ₄ . The reciprocating rotation of the shaft 3c by the reciprocating rotation between the start end 7 _4A and the end 7 _{4B of the} end portion of the shaft 3c allows the writing to be performed.

Here, the range indicated by A in FIG. 10 is the range of the appearance of the writing unit 3a, and the range indicated by B is the range in which the lead is sent out by the predetermined length from the writing unit 3a.

In the third and fourth embodiments shown in FIGS. 7 to 10, the writing section 3a has been described as being the front pipe of the slider. However, when the front pipe is a stationary pencil that does not stand out and is fixed. In the writing portion 3a, the tip of the lead becomes corresponding thereto. In this case, the inclined path 7 in FIG. 9 may be formed from the start portion 7 ₁ A to the middle portion 7 ₁ C. When (8) reciprocates between them, the tip of the lead which is the writing unit 3a is sent out by a predetermined length.

In this case, if the second inclination diagram 7 ₂ having the start end 7 ₂ A and the end portion 7 ₂ B is provided together, the projection 8 is inserted into the end portion 7 ₂ B and the chuck By maintaining the open state, the end of the lead 3a can be pushed into the front outer cylinder 1, thereby facilitating the operation of storing the lead.

On the other hand, in the present invention, the inclined path 7 may be an inclined hole as shown in the embodiment, but may be an inclined groove.

In addition, since the projection 8 is inserted into or exited from the start and end portions 7a and 7B of the inclined path 7, the texture is improved, but the second inclined path 7 in FIG. _{In the case} of the end portion 7 ₂ B of ₂ ), it is necessary to return to the start portion 7 ₂ A, so that the width of the furnace is not changed.

As described above, according to the present invention, the driving member 10 for attaching the rear outer cylinder 5 to the front outer cylinder 1 and the front inner cylinder 2 so as to be detachable can be freely rotated, but moves in the axial direction. While not installed, the writing member 3 is fitted into the rear inner cylinder 4 fitted in the front inner cylinder 2, while the rear inner cylinder 4 and the driving member 10 are axially fitted to each other. A writing instrument formed with a groove 11 and a protrusion 12, which is formed in any one of the front outer cylinder 2 and the rear inner cylinder 2, and has an inclined path 7 having both ends of the starting end portion 7A and the end portion 7B. ), And the rotation-axial movement conversion mechanism 6 is formed by the projection 8 which is formed on the other side and is fitted to slide on the inclined path 7, and can be applied to the ball pen with a simple structure. If the ramp is formed in two stages (7 ₁ and 7 ₂ or 7 ₃ and 7 ₄ ), it is also applicable to the pencil It is possible to perform various operations such as the appearance of the writing instrument and the pen lead out from the writing unit only by the rotation operation, so that the writing instrument having a simple structure and easy operation can be carried out at a low price.

Claims (9)

The front inner cylinder 2 is attached to the front outer cylinder 1 so that the writing member 3 is inserted in the front inner cylinder 2, and the rear outer cylinder 5 is attached to and detached from the front outer cylinder 1 and the front inner cylinder 2. Drive member 10 to be attached so that it can be freely rotated, but is installed so as not to move in the axial direction, the writing member (3) is fixed to the rear inner cylinder (4) fitted in the front inner cylinder (2) Or an axially rearward end 7A to either of these anterior inner cylinders 2 or rear inner cylinders 4, while being fitted so as to be able to slide freely, with respect to the axial line. An inclined ramp 7 is formed, while the other side is provided with a protrusion 8 fitted to slide on the ramp 7, and the rear inner cylinder 4 and the driving member 10 are fitted to each other. Writing instrument comprising an axial groove 11 and a projection 12 to be matched. The furnace ramp 7 is characterized in that the width of the ramp 7 is reduced in order to increase the texture when the protrusion 8 intervenes or exits the start end 7A and the end 7B of the ramp 7. Writing utensils. The method of claim 1, wherein the ramp (7) has a second ramp first ramp _(71), the second ramp at the leading-end portion ₍₇₁ A) of the first ramp ₍₇₁₎ As done in ₍₇₂₎ of ( 7 ₂ ) A writing instrument characterized in that the second inclined path (7 ₂ ) is formed on the opposite side of the first inclined path (7 ₁ ) so as to be the start end portion (7 ₂ A) of 7 ₂ ). The method of claim 1, wherein the ramp (7) of the first ramp ₍₇₃₎ and the second ramp ₍₇₄₎ in place As, the end part of the first ramp _{(73), (73} B) and a second ramp (7 ₄ ) A writing instrument characterized in that the first inclined path (7 ₃ ) and the second inclined path (7 ₄ ) formed to be the start end (7 ₄ A). The writing instrument according to any one of claims 1 to 4, wherein the start end portion (7A) of the ramp (7) is opened to the rear side. The writing instrument according to any one of claims 1 to 4, wherein the start end portion (7A) of the ramp (7) is developed backward through the blockage slit (2B). The writing instrument according to any one of claims 1 to 4, wherein the end portion (7B) of the ramp (7) is opened to the rear via a blocking slit (2B) and an open slit (2C). The writing instrument as set forth in claim 1, further comprising a friction generating member (13A, 13B, 13D) for generating a friction force between the front inner cylinder (2) and the drive member (10). The writing instrument as set forth in claim 1, wherein a friction generating member (13C) is provided between the front inner cylinder (2) and the rear inner cylinder (4) to generate a friction force therebetween.