JPH09123679A - Writing implement with correcting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable execution of both writing and correction thereof by a single writing implement with a correcting function by a construction wherein a writing shaft and a correcting liquid shaft are incorporated in a main-body vessel having an opening part in the fore end and are so constructed that each of them can be let out selectively from the opening part by a pressing operation of a part to be operated. SOLUTION: A correcting liquid shaft 6A having a coating part 20 provided in the fore end and a writing shaft 6B having a writing part 18 in the fore end are held in a main-body vessel 2 having an opening part 4 formed in the fore end part and a coil spring 7 as a member for agitation is fitted in each of the shafts 6A and 6B, while a plug 10 functioning also as a letting-out mechanism is fitted to the tail end of each of the shafts 6A and 6B. On the occasion when a part 14 to be operated is operated, the plug 10 and the correcting liquid shaft 6A (or the writing shaft 6B) are pushed out to the fore end side against a compression spring 8 and, at this time, the tail end part of a plug main body 11 is put in engagement by the main body 11 passing through holding walls 16 and dropping in. When the part 14 is operated again in this state, the plug 10 is pushed back to the tail end side by the reaction to the operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument with a correction function having a function of correcting a writing trace.

[0002]

2. Description of the Related Art As a conventionally known writing instrument,
Pencils, ballpoint pens, fountain pens, felt-tip pens, markers, etc. are listed, but of these, for writing instruments that are not easily erased with an eraser (generally non-pencil writing instruments), correct the writing marks Pens are often used. This correction pen contains a correction liquid therein and has an application portion for applying the correction liquid at its tip.

[0003]

When an error occurs in the writing content of the writing tool, the writing tool and the correction pen must be used together in order to immediately correct the error. That is, in this case, the writing instrument and the correction pen must be always provided as a set, which is particularly inconvenient to carry. Also, since the correction pen must be placed on a desk etc. while writing with a writing instrument,
When the correction occurs, the operation of holding the writing instrument with the correction pen is troublesome, and the writing instrument with a correction function placed on it may be accidentally dropped from the desk and damaged or lost.

In view of such circumstances, it is an object of the present invention to provide a writing instrument with a correction function, which is capable of immediately correcting a handwriting on the spot without using a correction pen, and which is convenient for carrying. And

[0005]

As a means for solving the above-mentioned problems, the present invention provides a main body container having an opening at the tip thereof for containing a writing liquid and a writing shaft having the writing portion at its tip. , A plurality of correction fluid shafts for accommodating the correction fluid and having a coating portion at the tip thereof are built in, and these writing shafts and correction fluid shafts are extended to a position where the tip thereof projects outward through the opening. It has a feeding mechanism.

In this writing instrument with a correction function, by drawing the writing shaft from the inside of the main body container to the tip side, the writing portion can be brought into contact with a predetermined surface for writing.
If an error occurs in this writing, the erroneous portion can be immediately corrected by simply feeding the correction liquid shaft instead of the above-mentioned writing shaft.

Here, a plurality of openings may be provided at the tip of the main body container so as to correspond to the respective correction liquid axes, but a single opening may be provided to allow the writing axis or the correction axis to be corrected. If the liquid shaft is configured to be selectively extended, the structure becomes compact, and it is possible to prevent the writing shaft and the correction liquid shaft from being simultaneously extended by mistake.

In this writing instrument with a correction function, since the correction liquid shaft is accommodated together with the writing shaft in a single main body container, in order to make the writing instrument as a whole compact, the application portion of the correction liquid shaft must be made as thin as possible. There is. As such an application portion, a throttle portion that is open at least on the tip side, the tail end side communicates with the correction liquid shaft body, and the diameter is reduced in the portion between the tip and the tail end toward the tip end side is formed. A valve body, which is formed of a flexible material and has a shape capable of contacting the inner surface of the throttle portion over the entire circumference, and is accommodated in the front tube so as to be movable in the axial direction, An urging member for urging the valve body toward the tip side and bringing the valve body into contact with the inner surface of the throttle portion by this urging force, and a tip cylinder tip surface at a position closer to the tip side than the valve body in the tip cylinder. And a coating tip portion that is movably held in the axial direction independently of the valve body in a state of protruding from the tip end side to The shapes of the coating tip and the valve body are set so that the valve body and the valve body are separated from each other in the axial direction. But, it is preferable.

At this coating section, in a state where no external force is applied,
The valve body is pressed against the inner surface of the front cylinder throttle portion by the urging force of the urging member, thereby sealing the valve body and restricting the correction fluid outflow from the tip of the front cylinder. Here, since the valve body is made of an elastic material and is independent of and separated from the application tip portion, the valve element is not affected by the state (material, position, etc.) of the application tip portion. It surely comes into close contact with the front tube throttle portion. Further, since the close contact portion is located farther back (on the tail end side) than the application destination portion, foreign matter does not intrude into the close contact portion from the outside, and the correction liquid is hardly dried at the close contact portion.

Next, when the coating tip is pressed against the coating surface from this state, the coating tip moves relative to the tip cylinder toward the tail end side due to the reaction force. Then, from the time when the application tip portion comes into contact with the valve element, the valve element together with the application tip portion is pushed toward the tail end side against the elastic force of the spring and separates from the inner surface of the throttle portion. At this time, the volume in the chamber on the tip side of the valve body in the tip cylinder rapidly increases, while the invasion of outside air into the tip side chamber due to this increases the passage resistance between the tip cylinder and the coating tip part. Due to the delay due to this, the pressure on the tip side chamber becomes negative, and the correction fluid stored on the tail end side of the valve body is once drawn into the portion. After that, the pressure is released,
When the valve body moves to the tip side again, the correction liquid is pushed out to the tip side and is supplied to the coating surface along the coating tip portion.

As described above, since the coating tip portion and the valve body are independent of each other and the valve body is formed of the elastic material having flexibility, the tip cylinder and the coating tip portion are made of, for example, metal or inorganic material. Even if it is made of a material, a good sealing property can be ensured, whereby the diameter of these can be reduced while ensuring sufficient strength for the tip cylinder and the coating tip portion.

If the diameter of the correction fluid shaft is reduced as described above, there is a risk that the ball may block the correction fluid flow path when a ball is put in the correction fluid shaft as a stirring member. If a coil spring is housed in the correction fluid shaft as a stirring member, the correction fluid passage can be reliably ensured by the gap of the coil spring.

Further, since the correction liquid generally consumes a larger amount than the writing liquid, it is desirable to make the cross-sectional area of the correction liquid shaft larger than the cross-sectional area of the writing shaft to give a difference in capacity between the two.

More specifically, if at least a part of the correction fluid shaft in the axial direction is shaped such that the outer peripheral surface thereof is along the inner peripheral surface of the main body container, the correction liquid shaft can be accommodated in the main body container. The correction fluid capacity of the correction fluid shaft can be maximized within
The life of the writing instrument as a whole can be extended.

In the writing instrument with a correction function of the present invention, since the application portion of the correction liquid shaft is extended from the opening to the tip side,
If this opening is stored upside, it is possible to prevent the correction fluid component from precipitating on the application portion of the correction fluid shaft, but a clip extending from the tip side to the tail end side is further provided on the outside of the main body container. If provided, the opening will always face upward when carried by using this clip, so that the precipitation of the correction fluid component in the application portion during carrying can be prevented more reliably.

The clip may be provided directly on the main body container, or may be formed on a cap mounted on the main body container so as to close the opening.

[0017]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIG.

The main body container 2 shown in FIG. 1 is provided with an opening 4 only at its tip, and the correction liquid shaft 6 is provided in the main body container 2.
A and a writing shaft 6B are provided. The correction fluid shaft 6A and the writing shaft 6B are formed in a circular tube shape by a flexible material having flexibility (for example, nylon), and the coating portion 20 is provided at the tip of the correction fluid shaft 6A and the writing shaft 6B is provided at the tip thereof. The parts 18 are mounted respectively. A coil spring 7 is inserted as a stirring member in the correction fluid shaft 6A and the writing shaft 6B.

At the tail ends of the correction liquid shaft 6A and the writing shaft 6B,
A stopper 10 that doubles as a feeding mechanism is attached. An inner wall 3 through which the correction liquid shaft 6A and the writing shaft 6B penetrate is provided in the middle part of the main body container 2, and the inner wall 3 and the plugs 10 are provided.
Since the compression spring 8 is interposed between the correction liquid shaft 6 and
A and the writing shaft 6B are urged toward the tail end side.

As shown in FIG. 2, each plug 10 integrally has a wide main body 11 and a narrow guided portion 12 formed along the main body 11 on the lower surface of the main body 11. A projecting portion 13 is projected from the front end face of the
Is fitted and fixed to the tail ends of the correction fluid shaft 6A and the writing shaft 6B. An operated portion 14 is provided on the surface of the tail end of the main body 11, and the operated portion 14 projects outward through an axially elongated hole 15 formed in the main body container 2. Further, in the tail end portion of the main body container 2, the guided portion 1 of each stopper 10 is provided.
A holding wall 16 is provided so as to guide the two so as to hold them from both sides.

In this mechanism, the operated part 14 is operated, and the stopper 10 and the correction liquid shaft 6A (or the writing shaft 6) are operated.
When B) is integrally pushed to the tip side against the elastic force of the compression spring 8, the main body of the plug 10 in a state where the coating portion 20 (or the writing portion 18) at the tip projects from the opening 4 to the tip side. 11 falls past both holding walls 16 and the tail end of the main body 11 is locked by the tip ends of both holding walls 16 (state shown in the drawing). From this state, the operated portion 14
By re-operating, the plug 10 and the correction liquid shaft 6A (or the writing shaft 6B) are pushed back to the tail end side by the reaction, and the application part 20 (or the writing part 18) is sunk inward from the opening 4. It is supposed to do. Further, when the writing shaft 6B is extended from the state shown in the figure, the writing shaft 6B side plug 1
When 0, the stopper 10 on the side of the correction fluid 6A is pushed out, and the correction fluid shaft 6A automatically returns to the retracted position. That is, the correction liquid shaft 6A and the writing shaft 6B are selectively extended from the single opening 4.

Next, the structure of the coating section 20 is shown in FIGS.
It will be described based on.

The coating section 20 is provided with a tip cylinder 22 which is open at both the tip end side and the tail end side. The tip cylinder 22 is entirely made of a hard material (a metallic material such as stainless steel or an inorganic material such as ceramics, etc.). ...). This tip cylinder 22
Has a bottom wall 24 in addition to the side wall, and a correction fluid flow hole 26 communicating with the inside of the correction fluid shaft 6A is formed in the center of the bottom wall 24.

The tip cylinder 22 has a large-diameter cylindrical portion 28, a narrowed portion 30, and a small-diameter cylindrical portion 32 in order from the tail end side. The large-diameter cylindrical portion 28 has a retaining portion 34 at an appropriate position, and is fitted and fixed to the tip portion of the correction fluid shaft 6A. The narrowed portion 30 is formed in the shape of a truncated cone whose diameter decreases toward the tip side, and the small-diameter cylindrical portion 32 has a smaller diameter than the large-diameter cylindrical portion 28.

A pen tip portion (application tip portion) 36, a valve element 38, and a guide member 40 are housed in the tip cylinder 22 in order from the tip side so as to be movable in the axial direction.

The guide member 40 is formed of a hard material equivalent to that of the tip cylinder 22, and as shown in FIGS. 4 (a) and 5 (a), the prismatic portion 44 on the tail end side of the writing instrument and the tip end side thereof. Column part 4
6 and 6 are integrated. The prismatic portion 44 is the large-diameter cylindrical portion 2
8 has a substantially square cross-sectional shape that is substantially inscribed in the inner peripheral surface of 8 (there may be a slight gap).
4 and the large-diameter cylindrical portion 28 are different in cross-sectional shape, a correction liquid flow path 47 as shown in FIG. 4A is secured between them, and the outer diameter of the cylindrical portion 46 is the large-diameter cylindrical portion. The diameter is set smaller than the inner diameter of 28. Further, a spring locking portion 45 is projected on the tail end surface (upper end surface in FIG. 3) of the prismatic portion 44, and a valve body locking portion 48 is projected on the tip end surface of the cylindrical portion 46.

The valve element 38 is made of a flexible elastic material or viscoelastic material such as high-quality rubber or soft special resin.
It has a columnar shape having a cross-sectional shape substantially equal to that of the columnar portion 46. The diameter of the valve body 38 is set to be smaller than the inner diameter of the large-diameter cylindrical portion 28 and larger than the inner diameter of the small-diameter cylindrical portion 32.
As shown in, the peripheral edge of the distal end side can contact the inner surface of the narrowed portion 30 at a proper position over the entire circumference. Also, this valve body 3
A locked hole 39 is provided in the tail end surface of the groove 8, and the locked hole 39 is engaged with the valve body locking portion 48 of the guide member 40, whereby the relative movement of the both in the radial direction. It is regulated.

A compression coil spring 42 is confined between the guide member 40 and the bottom wall 24 of the front cylinder 22 in a compressed state.
3, the valve body 38 and the guide member 40 are brought into close contact with each other, and the peripheral edge of the valve body 38 on the tip side is pressed against the inner surface of the throttle portion 30 over the entire circumference. ing.

The pen tip portion 36 is made of a hard material like the tip cylinder 22, and as shown in FIGS. 4 (b) and 5 (b), it has a truncated cone shape in order from the tail end side. Locked part 5
0, the prismatic portion 52, and the most advanced hemispherical portion 54 are integrally provided. The inclination angle of the outer peripheral surface of the locked portion 50 is set to be equal to the inclination angle of the throttle portion 30. Therefore, the locked portion 50 can be in surface contact with the inner peripheral surface of the throttle portion 30 over the entire circumference. It is said that. The prismatic portion 52 has a substantially square cross-sectional shape that is substantially inscribed in the inner peripheral surface of the small-diameter cylindrical portion 32 (there may be a slight gap). Due to the difference in the cross-sectional shape, the correction liquid flow passage 53 is secured between the two as shown in FIG. 4 (b).

When the locked portion 50 is in contact with the inner peripheral surface of the throttle portion 30 (that is, the locked portion 50 is moved to the most tip side), the tail end surface of the locked portion 50 is The pen tip portion 36 and the valve body 38 are formed so that a minute gap 56 as shown in FIG. 3 is formed between the tip end surface of the valve body 38 (that is, the pen tip portion 36 and the valve body 38 are separated from each other). The shape is set.

The structure of the writing unit 18 is exactly the same as the structure of the tip provided at the tip of a normal ballpoint pen, and the description thereof is omitted. However, the writing axis in the present invention is not limited to the ballpoint pen refill, but may be, for example, one that stores ink of a felt-tip pen or a marker.

Next, the operation of the writing instrument with the correction function will be described.

First, from the state where the correction liquid shaft 6A and the writing shaft 6B are accommodated in the main body container 2, the operated portion 14 corresponding to the writing shaft 6B is operated to extend the writing shaft 6B.
The writing portion 18 at the tip can be applied to a paper surface or the like to write on it.

If an erroneous writing occurs during the writing, the coating portion 20 of the correction liquid shaft 6A may be fed out instead of the writing portion 18. As a result, the correction liquid can be applied to the erroneous position.

In this state (state of FIG. 1), when no external force is applied to the tip, as shown in FIG.
The elastic force of the spring 42 presses the valve body 38 against the inner surface of the throttle portion 30 to seal the portion (that is, the flow of the correction fluid is blocked), and the correction fluid flows out from the tip opening of the tip cylinder 22. Is regulated.

Since the valve element 38 is made of a flexible elastic material and is independent of and separated from the pen tip portion 36, the state of the pen tip portion 36 (material,
The valve body 38 and the front cylinder throttle portion 30 are surely brought into close contact with each other without being affected by the position etc.). Also, as shown in FIG.
The pen tip portion 36 moves toward the tip end side by its own weight with the tip end portion facing downward, but the locked portion 50 of the pen tip portion 36 is moved.
The abutment of the pen tip portion 30 prevents the pen tip portion 36 from falling off. Moreover, since the tapered surface of the locked portion 50 and the tapered surface of the narrowed portion 30 are matched,
By contacting both sides over the entire circumference, leakage of the correction fluid from the tip of the front cylinder 22 can be prevented more reliably. In this way, while the pen tip portion 36 contacts the throttle portion 30, the valve body 38
The reason why the seal can be secured is because the valve body 38 and the pen tip portion 36 are separated from each other.

When the hemispherical portion 54 of the pen tip portion 36 is pressed against the coating surface 60 from this state as shown in FIG. 6A, the reaction force causes the pen tip portion 36 to move toward the tip end side of the tip cylinder 22. Move relative to. Then, from the time when the tail end surface of the locked portion 50 of the pen tip portion 36 comes into contact with the tip end surface of the valve element 38, the valve element 38 as well as the pen tip portion 36 becomes the elastic force of the compression coil spring 42. It is pushed to the tail end side against
Away from the inside. At this time, the valve body 3 in the front cylinder 22
While the volume of the tip side chamber 49 on the tip side of 8 is suddenly increased, the invasion of the outside air into this portion is caused by the correction liquid flow passage 53.
Because of the delay due to the passage resistance of No. 3, the inside of the tip side chamber 49 becomes a negative pressure, and the correction fluid stored in the tail end side of the valve body 38 enters the tip side chamber 49 as shown by the arrow in FIG. Be guided once. After that, the above-mentioned pressing is released, and the valve body 38 moves to the tip side again as shown in FIG. 7B, so that a small amount of the correction fluid is pushed out to the tip side by the valve body 38 and the pen tip portion is pressed. It is supplied to the coating surface through 36 (see the arrow in the figure). By applying the correction liquid to the erroneous occurrence position in this manner, the correction can be performed.

As described above, the pen tip portion 36 and the valve body 38 are independent of each other, and since the valve body 38 is formed of a flexible elastic material, as described above, the tip cylinder 22 and the pen body are formed. Even if the tip portion 36 is made of a metal or an inorganic material, a good sealing property can be secured, and thus the diameter of the tip barrel 22 and the pen tip portion 36 can be reduced while securing sufficient strength. By reducing the diameter of the coating portion 20 with such a structure, the coating portion 20 is formed into the writing portion 1 described above.
It is possible to store the same together with 8 in the common main body container 2.

According to this writing instrument with a correction function, even if it is desired to immediately correct an erroneous writing, it is convenient to carry a single main body container 2. Moreover, it is not necessary to change the writing tool from the writing tool to the correction tool as in the conventional case when the correction is performed, and the desired correction liquid shaft can be quickly used only by the knocking operation of the operated portion 14. Further, unlike the conventional case, there is no fear of losing the correction tool during writing.

Further, as shown by a chain double-dashed line in FIG. 1, a clip 72 extending from the front end side to the tail end side is formed on the cap 70 mounted on the main body container 2 so as to close the opening 4 thereof. If a clip having a similar shape is directly formed on the main body container 2, the applicator 20 will always face upward when the writing instrument with a correction function is carried in a chest pocket or the like by using the clip 72. Therefore, there is an advantage that the precipitation of the correction fluid component in the coating section 20 can be prevented more reliably.

The structure of the coating section 20 is not limited to the above,
Various modifications are possible. For example, as shown in FIG. 7 as a second embodiment, the valve element 38 is formed into a spherical shape,
If a receiving seat 47a for holding the valve body 38 is provided in the front end surface of the guide member 40, the throttle portion 30 and the spherical valve body 38 can be surrounded by the entire circumference even if the inclination angle θ of the throttle portion 30 is reduced. It is possible to surely make contact with each other and to secure good sealing property. Therefore, the large-diameter cylindrical portion 28 of the tip cylinder 22 can be made thinner by that amount, which makes it easier to perform limited application to a minute area.

The cross-sectional shape of the guide member 40 is
It suffices that at least a part of the cross-sectional shape in the axial direction is different from the cross-sectional shape of the front cylinder 22, and for example, instead of the prismatic portion 44 in the above-mentioned embodiment, an arc and a straight line as shown in FIG. It is also possible to form the skirt part 46 'having a contour consisting of or to have a polygonal shape other than a square. Further, the guide member 40 may have a cylindrical shape, and the cross-sectional shape of the tip cylinder 22 may be set to a shape other than a circle. Alternatively, FIG.
As shown in FIG. 5, the guide member 40 is provided with a columnar portion 46 ″ that is substantially in contact with the inner surface of the large-diameter cylindrical portion 28. Even if a predetermined number of axial through holes 58 are provided in the columnar portion 46 ″, the correction fluid flows. It is possible to secure a route. However, if the cross-sectional shapes of the guide member 40 and the tip cylinder 22 are made different as described above, there is an advantage that the correction liquid flow passage can be easily secured without providing the through hole 58 and the like.

The above description also applies to the relationship between the cross-sectional shape of the pen tip portion 36 and the cross-sectional shape of the tip tube 22.

Next, a third embodiment will be described with reference to FIGS.
1 will be described.

In this embodiment, the guide member 40 in the second embodiment is omitted, and the outer diameter of the compression coil spring 42 is set equal to the outer diameter of the spherical valve body 38 (that is, Compression coil spring 4
The inner diameter of 2 is set smaller than the outer diameter of the valve body 38), and the upper portion of the valve body 38 is fitted into the lower end of the compression coil spring 42 from below.

The upper and lower ends of the compression coil spring 42 are
The end-winding portion 62 is formed by the wire rods adjacent to each other contacting each other.
Is set to a number (four in the illustrated example) so that the fitting portion of the valve body 38 (the upper portion of the valve body 38) is completely covered.

On the other hand, the locked portion 50 of the pen tip portion 36
A modified cross-section 52 'is formed between and the hemisphere 54. This modified cross-section 52 'is shown in FIGS.
As shown in FIG. 3, each of the tops 52a ′ has three tops 52a ′.
It has a shape having an outwardly convex cylindrical surface 52b 'between a', that is, a shape substantially the same as the rotor in the rotary engine, and each top portion 52a 'contacts the inner peripheral surface of the front cylinder 22. Is set to.

A recess 64 is formed on the upper surface of the locked portion 50 to secure a gap with the lower end of the valve body 38.

As described above, the guide member 40 shown in each of the above-mentioned embodiments can be omitted, and thus the coating section 20 can be made more compact.

Next, a fourth embodiment will be described with reference to FIG.

In the above-described embodiment, the correction liquid shaft 6A is formed in the shape of a circular cylinder having a small diameter like the writing shaft 6B. However, in this embodiment, as shown in FIG. The tail end side portion of the liquid shaft 6A is enlarged, and the outer peripheral surface thereof is formed in a shape along the inner peripheral surface of the main body container 2 (that is, a shape having a semicircular cross-sectional shape).

According to this structure, the limited space in the main body container 2 can be utilized to the maximum to increase the storage volume of the correction fluid, and the life of the writing instrument with a correction function can be extended. Since the writing shaft 6B may be a thin tube with respect to the correction liquid shaft 6A, as shown in FIGS. 13 (a) and 13 (b) in the fifth embodiment, the remaining space of the correction liquid shaft 6A remains. A plurality of writing axes 6B (for example, writing axes having different colors of stored ink) may be accommodated in the space.

The embodiment of the present invention is not limited to the above, and the following forms are possible, for example.

(1) As shown in FIG. 14 as a sixth embodiment, the correction liquid shaft 6A and the writing shaft 6 are provided at the tip of the main body container 2.
A plurality of openings 4A and 4B are provided in accordance with B.
The coating section 20 and the writing section 18 may be individually projected from A and 4B. In this case, tip guides 19A and 19B are provided between the coating section 20 and the writing section 18 and the correction liquid shaft 6A and the writing axis 6B, respectively, so that the coating section 20 and the writing section 18 can be reliably opened in the openings 4A and 4B. It is more preferable if it is configured so as to project from. However, as shown in FIG. 1, a single opening 4 may be provided in the main body container 2, and one of the coating part 20 and the writing part 18 may be selectively projected from the opening 4. For example, there is an advantage that the entire structure of the writing instrument with a correction function can be made more compact, and the inconvenience that the coating section 20 and the writing section 18 are accidentally fed out can be surely avoided.

(2) In the present invention, two or more correction fluid shafts may be housed in the main body container regardless of the number of correction fluid shafts. In this case, if the correction fluid shaft having a large diameter and the correction fluid shaft having a small diameter are housed, for example, when the correction fluid is quickly applied to a correction area over a wide area, the correction fluid shaft having a large diameter is finely divided. It is possible to use different correction liquid shafts for accurate correction at different locations, which is more convenient.

(3) As the feeding mechanism in the present invention, various conventionally known ones can be applied, for example, a single knock portion is provided, and the correction liquid shaft is provided each time the knock portion is knocked. May be sequentially drawn out, or a correction liquid shaft may be drawn out in response to a rotational operation upon rotation operation.

[0057]

As described above, according to the present invention, both the writing shaft and the correction liquid shaft are built in the main body container having the opening at the tip,
Since each axis is extended from the opening, both writing and correction can be performed with a single writing instrument with a correction function. Therefore, it is possible to dramatically improve the usability by eliminating the need to use a writing tool and a correction tool as in the past, and to change the writing tool from the writing tool to the correction tool at the time of correction. There is an effect that it can be surely lost.

Further, if the single opening is provided and the correction fluid shaft is selectively extended from this opening, the structure can be made more compact, and a plurality of correction fluid shafts are erroneously formed at the same time. It is also possible to prevent the situation from being paid out.

As the coating portion, a throttle portion having an opening at least on the tip side, a tail end side communicating with the correction liquid shaft main body, and a diameter narrowing toward the tip side is formed in a portion between the tip and the tail end. A valve body, which is formed of a flexible material and has a shape capable of contacting the inner surface of the throttle portion over the entire circumference, and is accommodated in the front tube so as to be movable in the axial direction,
An urging member for urging the valve body toward the tip side and bringing the valve body into contact with the inner surface of the throttle portion by this urging force, and a tip cylinder tip surface at a position closer to the tip side than the valve body in the tip cylinder. And a coating tip portion that is movably held in the axial direction independently of the valve body in a state of protruding from the tip end side to If the application tip portion and the valve element are set such that the valve element is separated from the valve element in the axial direction, the application tip portion and the valve element are independent from each other, and the valve element has flexibility. Since it is made of an elastic material, the tip cylinder and the coating tip can be made of a high-strength material such as a metal or an inorganic material while ensuring a good seal by this valve body. These diameters can be reduced while giving sufficient strength to the parts. Therefore, it is possible to store the entire coating portion inside the main body container while reducing the diameter thereof, and to make the structure more compact.

Further, according to the one in which the coil spring is accommodated in the correction fluid shaft as the stirring member, the correction fluid passage can be surely secured by the gap while performing good stirring by the coil spring.

Further, if the cross-sectional area of the correction liquid shaft is made larger than that of the writing shaft, it is possible to set a well-balanced volume corresponding to the consumption speed of the writing liquid and the correction liquid, and further extend the life of the writing instrument. The effect is obtained.

More specifically, if at least a part of the correction liquid shaft in the axial direction is shaped such that the outer peripheral surface thereof is along the inner peripheral surface of the main body container, the limited space in the main body container can be effectively used. It can be used to maximize the volume of correction fluid in the correction fluid shaft, and extend the life of the writing instrument with a correction function.

If a clip extending from the tip end side toward the tail end side is provided on the outside of the main body container, the opening portion can be surely pointed upward when the clip is carried, and the clip can be easily held while being carried. The effect of more reliably preventing the above-mentioned correction fluid component from settling in the coating section can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of a writing instrument with a correction function according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a feeding mechanism in the writing instrument with a correction function.

FIG. 3 is a cross-sectional front view of an application unit in the writing instrument with a correction function.

4A is a cross-sectional view taken along the line AA in FIG. 3, and FIG.
FIG. 6 is a sectional view taken along line BB of FIG.

FIG. 5A is a front view of a guide member included in the writing tool with a correction function, and FIG. 5B is a front view of a pen tip portion included in the writing tool with a correction function.

FIG. 6A is a sectional front view showing a state where the pen tip portion is pushed toward the tail end side, and FIG. 6B is a sectional front view showing a state where the pen tip portion is returned to the tip end side.

FIG. 7 is a cross-sectional front view showing a main part of a writing instrument with a correction function according to a second embodiment.

FIG. 8 is a partial cross-sectional plan view showing a modified example of the guide member.

FIG. 9 is a partial cross-sectional plan view showing a modified example of the guide member.

FIG. 10 is a sectional front view showing a main part of a writing instrument with a correction function according to a third embodiment.

FIG. 11A is a front view of a pen tip portion of the writing instrument with a correction function, and FIG. 11B is a bottom view of the pen tip portion.

FIG. 12 is a perspective view showing a main part of a writing instrument with a correction function according to a fourth embodiment.

13A is a sectional front view showing a main part of a writing instrument with a correction function according to the fifth embodiment, and FIG. 13B is a C of FIG. 13A.
FIG. 4 is a sectional view taken along line C of FIG.

FIG. 14 is an overall sectional view of a writing instrument with a correction function according to a sixth embodiment.

[Explanation of symbols]

 2 Main body container 4, 4A, 4B Opening 6A Correction fluid axis 6B Writing axis 7 Coil spring 18 Writing section 20 Application section 22 Tip cylinder 24 Bottom wall 26 Correction fluid flow hole 28 Large diameter cylindrical section 30 Throttling section 32 Small diameter cylindrical section 36 Pen Tip part 38 Valve body 70 Cap 72 Clip

Claims (9)

[Claims] 1. A main body container having an opening at its tip, a plurality of correction shafts containing a writing liquid and having the writing part at its tip, and a correction shaft containing a correction liquid and having its application part at its tip. A writing instrument with a correction function, which is equipped with a liquid shaft and which has a feeding mechanism for feeding the writing shaft and the correction liquid shaft to a position where the tip of the writing shaft and the correction liquid shaft project outward through the opening. 2. The writing instrument with a correction function according to claim 1, wherein a single opening is provided at the tip of the main body container, and the writing shaft or the correction liquid shaft is selectively extended through this opening. A writing instrument with a correction function characterized by being configured. 3. The writing instrument with a correction function according to claim 1 or 2, wherein the application portion is opened at least on the tip side, and the tail end side communicates with the correction liquid shaft main body, and is a portion between the tip and the tail end. And a front cylinder formed with a narrowed portion that reduces in diameter toward the tip side, and a shape formed of an elastic material having flexibility and capable of contacting the inner surface of the narrowed portion over the entire circumference. And a valve body housed therein so as to be movable in the axial direction,
An urging member for urging the valve body toward the tip side and bringing the valve body into contact with the inner surface of the throttle portion by this urging force, and a tip cylinder tip surface at a position closer to the tip side than the valve body in the tip cylinder. And a coating tip portion that is movably held in the axial direction independently of the valve body in a state of protruding from the tip end side to A writing instrument with a correction function, characterized in that the shapes of the application tip portion and the valve body are set so that the valve body is separated from the valve body in the axial direction. 4. The writing instrument with a correction function according to claim 3, wherein the tip tube and the coating tip portion are formed of a metal or an inorganic material. 5. The writing instrument with a correction function according to any one of claims 1 to 4, wherein a coil spring for agitation is housed in the correction liquid shaft. 6. The writing instrument with a correction function according to any one of claims 1 to 5, wherein the cross-sectional area of the correction liquid axis is larger than the cross-sectional area of the writing axis. 7. The writing instrument with a correction function according to claim 6, wherein the shape of at least a part of the correction liquid shaft in the axial direction is such that the outer peripheral surface thereof is along the inner peripheral surface of the main body container. Writing instrument with correction function. 8. The writing instrument with a correction function according to claim 1, wherein a clip extending from the tip side toward the tail end side is provided on the outside of the main body container. 9. The writing instrument with a correcting function according to claim 8, wherein the main body container is provided with a cap mounted so as to close the opening, and the clip is formed on the cap. Writing instrument.