JPS6058896A - Writing utensil - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a writing instrument that automatically and effectively seals the writing portion of the writing member when the writing portion is placed in a stored state. The present invention can be applied to writing implements such as fountain pens, felt-tip pens, and ballpoint pens, but is most effective when applied to writing implements such as water-based ballpoint pens and felt-tip pens.

The applicant of this application has proposed a system in which the writing part of the writing member is brought into a writing state in a sealed state by knocking or rotating the sealing body into or out of the sealing position. Various applications have already been filed to make it possible to
No. 3783, Japanese Patent Application No. 57-253145, Japanese Patent Application No. 1983
-8179B). By the way, since these devices use five cylindrical bodies: a shaft tube, a sliding tube, and an inner tube, the structure is complicated and there is a risk that they cannot be produced at low cost. It took some troublesome operations to replace it.

The object of the present invention is to provide a writing instrument of this kind that has a simple structure, can be manufactured at low cost, and has the image of a high-class rotary writing instrument.

Next, the configuration of the present invention will be explained with reference to the drawings.

FIG. 1 is a sectional view showing a first embodiment of the invention.

(1) is a cylindrical front shaft, but the tip of the front shaft (1) is formed into a tapered shape, and the tip has a through hole (for which the writing part of the writing member, which will be explained later), can be inserted and retracted. 2) is open.

A cylindrical body (3) is fitted and fixed inside the front shaft (1),
An inner cylinder (4) is attached to the front of the cylindrical body (3). The inner cylinder (4) is made of magnetic material. A small diameter part (5) is formed near the front end of the inner cylinder (4), and the tip of the small diameter part (5) is opened L1.
Section (6). As shown in FIG. 2, which is an enlarged exploded perspective view, two projecting pieces f are provided on the outer periphery of the small diameter portion (5).
7) (7) is formed, and the projecting piece (force (7) has a small hole, (8) (8), respectively.

A separate seal body (9) is prepared, and the seal body (9) is approximately disk-shaped and has a size that closes the opening (6) of the inner cylinder (4). A protruding piece (10) is also formed on the seal body (9), and a small hole 0υ is also formed in the protruding piece 0. A seal ring (l) is attached to the outer circumference of the rear surface of the seal body (9), but the seal ring tta +-t cylindrical (
It has a ring shape with a size that almost matches the tip edge of the small diameter portion (5) of (4). Rumor has it that the seal ring is similar to a rubber magnet. A bulge 03) is formed on the rear surface of the seal body (9), and a depression θ is formed in the center of the bulge 03).
It forms a ooze.

The protrusion of the inner cylinder (4) (insert the protrusion (101) of the seal body (9) between the force and the protrusion) (the small hole of the force (8) (8) and the small hole of the protrusion Oω When one pin 05) is passed through OI), the seal body (9) is rotatably attached to the front of the inner cylinder (4).Then, the seal body (9) is rotated rearward. When the seal ring α, which is a rubber magnet, is attracted to the tip edge of the inner cylinder (4), which is a magnetic material, and the sealing body (9)
The opening (6) of the inner cylinder (4) is closed and sealed. When the seal body (9) is rotated forward, it opens the opening (6) of the inner cylinder (4), but when there is no obstacle, the attraction force by the magnet of the seal ring (12) It is designed to be attracted to the tip edge of the inner cylinder (4).

Step portion formed inside the inner cylinder (4) and writing member (1b)
There is a spring 0 between the step formed on the outer periphery near the tip of
7), the writing member αe is fitted inside the inner cylinder (4) and the cylindrical body (3). The front part of the writing member Qbl is provided with an air hole Qgl, and the front part of the writing part A (1 [9 is formed with a small diameter part Q), and the tip of the small diameter part 00 is formed with a writing part (2 (8). .In addition, the air hole (1) may be provided at the tail end of the writing member (Ib'l).
The rear portion of 61 projects to the rear of the front shaft (1).

A cylindrical body (21) is fitted around the outer periphery of the rearwardly projecting portion. The rear part of the cylindrical body 01) projects slightly rearward from the rear end of the writing member (16).

An elastic seal ring (2 hot water is fitted and removed) behind the collar formed at the tip of the cylindrical body 0D. Then, another cylindrical body (C) is attached from the rear around the outer periphery of the cylindrical body (2I). A large diameter part (251) is formed through the cylindrical body (step c!4 in front of the second floor).An elastic seal ring (26 ) After fitting the large diameter part (
2!19 is firmly fitted into the inner circumference near the rear end of the front shaft (1). On the outer periphery of the second half of the cylindrical body (2, 1, there is another cylindrical body (
I am wearing 271.

The cylindrical body (21) is attached by fitting a sliding piece (21) from behind near the rear end, but a protrusion (29) is formed in one place on the sliding piece (21) toward the outer circumference. Then, on the outer periphery near the rear end of the cylindrical body (21), a guide tube (3 (It) is fitted and installed, but an axial slit 01 is installed in the guide tube (to)) while protruding rearward. A sliding piece (2 barrel protrusions (29)) is fitted into the slit C3+1.A circumferential groove 0 is placed on the outer periphery near the rear end of the guide tube
It forms a thirst.

A cam cylinder 0 is fitted from the rear on the outer periphery of the guide cylinder (toward), and a protrusion t34) is formed on the inner surface of the cam cylinder 0.

The protrusion 04) is fitted into the groove (32) of the guide cylinder (to).The front end edge of the cam cylinder Oj is a cam surface consisting of an inclined edge, and a locking part is formed at the most protruding part. .

A cam cylinder (rear shaft C from the rear of the third row) is fitted to form an integral unit, and the front end of the rear shaft C3r9 is in contact with the rear end of the front shaft (1). The front shaft (1) is removably fitted to the large diameter portion (C) of the cylindrical body (C) so as to rotate together. The front shaft (1) and the rear shaft l35) constitute the main body of the writing instrument.

Although FIG. 1 shows the sealed state, the tip of the writing member α6) is housed in the inner cylinder (4), and the seal ring circle is held in the inner cylinder (4) by the attraction force of the magnet.
4), and the seal body (υ) is attached to the inner cylinder (4).
The opening (6) is closed and sealed. Then, the writing member αe is retracted by the spring (+7),
The seal ring (2) attached to the tip of the cylinder (21) hits the step (24) of the cylinder (c), and the cylinder (2I)
) and the cylindrical body (c). The large diameter part (23) of the cylindrical body (23) has a seal ring (2) fitted on the outer periphery of the large diameter part (2). The rear part of the writing member (16) is sealed by the seal ring (2) and the seal ring CI!e.
2+I and the air hole (II) are completely sealed. In addition, in this sealed state, the sliding piece (
The protrusion 4 of 2) is not in contact with the front edge of the cam cylinder 0 spring.

To go from the sticker state to the writing state, use the front shaft (1)
Rotate the rear shaft (to) against. When the rear shaft C3G rotates, the cam cylinder (33) rotates together;
The protrusion Oa fits into the groove C of the guide tube (to) and rotates again.Then, as the cam tube rotates, the cam surface on the front edge of the cam tube slides. It hits the protrusion of the movable piece (281), but after that, the cam surface pushes the protrusion (2) and moves the writing member (161 forward) while compressing the spring α force.

The tip of the writing member ae fits into the writing part (2υ is the recess 04 of the 7-piece body (9)), and the inclined surface of the front end of the writing part (+6) comes into contact with the shoulder on the recess side, so that the writing part (
2IIIl does not hit the seal body (9) and the seal body (
9), the small diameter portion 0ω of the writing member (16) is pushed forward while repelling the
), it becomes a writing state that stands out. At this time, the sliding piece (2□
□□ protrusion Q! l) is locked to a locking portion at the tip of the cam cylinder (33). Continue writing in this writing state.

To return from the writing state to the sealing state, the rear shaft 09 is rotated in the opposite direction in the state shown in FIG. The sliding piece (two-barrel protrusion (29 is the cam cylinder 03) comes off from the locking part at the tip, and after that, the writing member Oe is urged backward by the zero force of the spring, so that the protrusion ( A) retreats along the cam surface of the cam cylinder C33), and the writing section (10) also retreats together.

Then, the seal ring (22) is attached to the stepped portion (c) of the cylindrical body (c).
24), the retreat is blocked, but at this time, the tip of the writing member (+61) is stored in the inner cylinder (4), and the sealing body ( 9 seals the opening (6) of the inner cylinder (4), returning to the sealing state shown in Fig. 1.The state shown in Fig. 4 changes to the state shown in Fig. 3, and then the state shown in Fig. 1 occurs. Even in the process of reaching the state, the writing part (2) of the writing member 06 moves backward while the front end inclined surface of the writing part (1 (9) comes into contact with the shoulder of the corner Oa of the seal body (9)). is the seal body (9)
never touch.

Next, a second embodiment of the present invention will be described with reference to FIGS. 5 to 8. In the second embodiment, an inner cylinder (4) is attached to the tip of the front shaft (1). Then, prepare a cap-shaped mounting piece (G) as shown in Figure 6, and make sure that the small diameter part (5) of the cylinder (4) is just large enough to fit in the center of the mounting piece (G). A hole is drilled, two cuts are made on each side of the hole, and tongue pieces 07) C17) are formed between these cuts. Moreover, a notch (2) is made in one of the holes.

If the protruding piece (force) provided on the small diameter part (5) of the inner cylinder (4) is passed through the notch (2), then the mounting piece (
) into the large diameter part of the inner cylinder (4). After that, a seal body (9) is placed in front of the small diameter portion (5) in the same manner as in the first embodiment.

Attach it so that it can rotate freely. However, the tip edge of the small diameter portion (5) is slightly inclined, and the seal ring (12+) attached to the seal body (9) is also inclined accordingly to facilitate sealing. (
12) is made of ordinary elastic material rather than a splitting magnet. A protruding piece 0!10ω is formed on each side of the seal body (9), and a tension spring is installed between the protruding piece (3glC3!Jl) and the tongue piece (3η(37)) of the receiving piece (3G). (40(4(II) installed, /-
The body (9) is urged rearward.

A cap (4υ) is fitted and attached to the front of the front shaft (1).The cap (4υ) constitutes a part of the front shaft (1).

The operation of the second embodiment will be apparent from FIGS. 5, 7 and 8.

Next, a sixth embodiment of the present invention will be explained with reference to FIGS. 9 to 11. In the third embodiment, the plate spring (44) has one end attached to the front surface of the seal body (9) and the other end of the plate spring (44) is attached to the front shaft (44).
It is attached to the inner surface of 1). Note that the other end of the leaf spring (4) does not necessarily have to be attached several times to the inner surface of the front shaft (1), and may be left as it is.

The operation of the third embodiment will be apparent from FIGS. 9-11.

Next, a fourth embodiment of the present invention will be described with reference to FIG. 12. In the fourth embodiment, the bulge O of the seal body (9)
Assuming that y is rounded, the front end inclined surface of the writing member ([6) hits the shoulder of the recess Oa and repels the seal body (9), and then when the small diameter portion 01 of the writing member (1 (a) moves forward, I try to reduce resistance when I finish writing and retreat.

Next, a fifth embodiment of the present invention will be explained with reference to FIG. In the fifth embodiment, a ring (4J) fitted between the front shaft (1) and the inner cylinder (4) has a protrusion (force) that allows the seal body (9) to rotate freely. The seal body (9) is biased rearward by a leaf spring (4).

Next, a sixth embodiment of the present invention will be explained with reference to FIG. 14. In the first embodiment, a spring (17) for urging the writing section 1' (lt9) backward is arranged at the front, but in the sixth embodiment, a spring 0η is arranged at the rear. In the sixth embodiment, a seal ring (2E9) is attached between the cylindrical body (3) fitted inside the front shaft (1) and the cylindrical body (C). , the stepped part at the rear end of the cylinder (c) and the writing member (
The cylindrical body (21+ is placed between the tip of the collar and the spring 07) is attached to the sliding piece (C) that is fitted to the rear end of the cylindrical body (c) and the rear end of the cylindrical body 0111. c) It is placed between.

In this sixth embodiment, the writing member (1ω is a cylindrical body Q
When the writing member ae is retracted from the forward position to the retracted position, the seal body (9) is firmly attached to O.

It is necessary to have a holding force that can withstand frictional resistance.

Next, a seventh embodiment of the present invention will be described with reference to FIGS. 15 and 16. In the seventh embodiment, as shown in FIG. 15, which is an exploded perspective view, the tip of the protrusion 0 (2) provided on the seal body (9) is spherical, and the tip of the protrusion 0 (2) provided on the inner cylinder (4) is spherical. A spherical space is provided inside the protrusion (force). When the spherical part at the tip of the protrusion a@ is inserted into the spherical space inside the protrusion (force), the seal body (9) is the inner cylinder (4)
16, and is rotatably attached to the holder, and the state shown in FIG. 16 is reached.

Above 1. Although some embodiments of the present invention are shown, the embodiments of the present invention are not limited to the above embodiments. For example, when rotating the rear shaft C (51), a cam mechanism is used to move the writing member Q'61 forward and backward, but there are other transmission mechanisms for moving the writing member Q61 forward and backward, such as a threaded mechanism, a screw feed mechanism, and a screw feed mechanism. A transmission mechanism such as a transmission mechanism or any other mechanism may be used.The transmission mechanism may be provided at any location.

In the writing instrument according to this invention, the main body is divided into a front shaft (+3 and rear shaft 05), and both shafts can be relatively rotated, but when the front shaft is rotated relatively, It is sufficient that the writing member Ql can be moved forward and backward.

The attachment means and location of the seal body (9) are arbitrary, as long as it is attached to open and close the opening (6) of the inner cylinder (4), and the seal body (9) is always attached to the opening. It is sufficient that the opening (6) is pressed against the opening (6) and the opening (6) is closed while being urged by the urging means. Although the seal body (9) is shown attached so as to swing in the front-rear direction, it may be attached so that it swings in the left-right direction or the like.

The biasing means that constantly presses the seal body (9) against the opening (6) of the inner cylinder (4) to close the opening (6) may utilize a magnet or a spring. Any biasing means other than one utilizing a flat spring or leaf spring can be used.

Seal body (91) is shown in which seal ring 0 is adhered to the rear surface and sealed with seal ring H, but seal body (9) is made of an elastic material and seal ring a
You can also omit one. The inner cylinder (4) may be made of an elastic material without using the seal ring 02, or a seal ring or the like made of an elastic material may be attached to the tip of the inner cylinder (4).

Furthermore, any sealing means may be used to seal between the main body side and the writing member fLl side at the rear position.

The structure of the present invention is as described above, and the present invention has the following excellent effects.

In the writing instrument according to the present invention, if the front shaft (1) and the rear shaft C3S constituting the main body are relatively rotated, the writing part 4 provided between the main body and the writing member Oe "aO
The transmission mechanism that moves the frEne section 4A forward and backward works.
(161 is moved forward and backward, but first, in order to change from the sealed state to the writing n12 state, the front shaft (1) and the rear shaft 09 are rotated relative to each other to advance the writing member 06). When the writing member (month 06) moves forward, the writing member (Itil
The writing part (2 (Jl) pushes aside the seal body (9) against the force that blocks the opening (6) without hitting the seal body (9), opens and moves forward, and the 0° raising member (16) After moving forward, it is locked in the forward position and enters the writing state.

Next, the movement section 4g' (I
When the front shaft (1) and the rear shaft 051 are rotated relative to each other in order to unlatched the writing member Q61 and move it backward, the writing part (a) of the writing member Q61 is moved to the seal body. (9), and at this time, the seal body (9) closes the opening (6) of the inner cylinder (4) by the urging means that urges it to close the opening (6) and seals it. do. Therefore, there is no possibility of damaging the writing member (61) or soiling the seal body (9).

In the sealed state, even in the rear position, there is a sealing means that seals between the main body side and the writing member (10 side). Both the writing part (2) and the air hole (II) are sealed.

To enter the writing state or sticker state, press the front shaft (
1) and the rear shaft C351 relative to each other, the operation is really simple.

In the sealed state, the seal is attached near the inner tip of the main body, and the position of the opening (6) of the inner cylinder (4) and the writing member (1)
61, it is possible to use a commonly available writing member or a slightly modified version thereof. and,
Even if the overall length of the writing instrument is the same, a longer writing member can be used compared to the Noik type. In addition, when the ink of the writing member (I (9) runs out, the writing member ([61
You can also use it by replacing it with a new one,
The replacement barrel is easy to operate as all you have to do is pull out the front shaft from the rear shaft and replace the writing member. Furthermore, in the case of a knock-type type, if the air hole is opened at the tail end due to the shock when reversing, there is a risk of ink flying out or damaging the inside of the writing member, but with this type, it is possible to retract gently by rotating. Therefore, there is no risk of that happening.

Further, the writing instrument according to the present invention has a front shaft (1) and a rear shaft c.
3. The writing member (1 (9), the transmission mechanism provided between the main body and the writing member (2), the inner cylinder (4) installed in the front shaft (1), and the inner cylinder (1). A seal body (9) attached to open and close the opening (6) of I);
) for urging the opening of the writing member (161) toward the 1'' portion (6), and means for pushing the sealing member (9) away and opening the writing member (161) without the writing member (4) hitting the sealing member (9) when the writing member (161) moves forward. and,
Moreover, it is merely a sealing means for sealing between the main body side and the writing member [alpha] side at the rear position. Therefore, the structure is simple and can be manufactured at low cost. Moreover, simply improving the front and rear axles, that is, the outside, gives consumers the image of a rotating type as a luxury product, and therefore sells for a high price. It is also suitable for sale as a set with a rotating high-grade ballpoint pen or a high-grade mechanical pencil.

[Brief explanation of drawings]

1, 3 and 4 are sectional views showing the operation of the first embodiment of the present invention, FIG. 2 is an enlarged exploded perspective view of the main parts of the first embodiment, and FIGS. 8 and 8 are sectional views of essential parts showing the operation of the second embodiment, respectively, FIG. 6 is an enlarged exploded perspective view of essential parts of the second embodiment, FIGS. 9, 10, and 1.
1 is a cross-sectional view of the main parts showing the operation of the third embodiment, and FIGS. 12, 13, and 14 are the fourth embodiment, respectively.
Cross-sectional view showing main parts of the fifth embodiment and the sixth embodiment, No. 15
The figure is an exploded perspective view showing the main parts of the seventh embodiment, and FIG. 16 is an assembled view of the one shown in FIG. 15. (1)...Front shaft (4)...Inner cylinder (6)...Opening (9)...Seal body (lfi)
...Writing section missing Cod...Air hole (20)...Writing section 0ω...Back shaft patent applicant Ancos Co., Ltd. procedural amendments 1982 sheep September 6th Patent Office Commissioner Kazuo Wakasugi Tono 1. Indication of the case 1982 Patent 1 No. 141856 'l'2, Title of the invention Writing instrument 3, Person making the amendment Relationship to the case Patent applicant address 5-1-19 Nishitenma, Kita-ku, Osaka, Osaka Prefecture Name (Name) Ancos Co., Ltd. Representative Yasuyuki Tsuki 4, "Advance." on page 8, line 6 of the agent's statement is corrected to read Th1''. Written by Sugibuki, the writing department is moving forward. As shown in Figure 3,

Claims (1)

[Claims] 1. The main body of the writing instrument is composed of a front shaft (1) and a rear shaft (2) so that the front shaft (1) and the rear shaft 0ω can be rotated relative to each other. [Accommodate 0 and kidnap the writing department Q
A flower writing part holder is formed in front of 61, and when the front shaft (1) and the rear shaft C1e are relatively rotated between the main body and the writing member f16), the writing member 01 is moved forward and backward. A transmission mechanism is provided, and an opening (
6), and attach the cylinder (4) formed with the opening (
6) is a seal body (9) that opens and closes the opening (6).
is provided, and a biasing means is provided which always presses the seal body (9) against the opening (6) and biases the seal body (9) so as to block the opening (6), and when the writing member QG moves forward, the writing portion ( stomach)
The writing member Qbl is provided with a means for opening by pushing the 7-l body (9) away against the force that blocks the opening (6) without hitting the seal member (9), and also in the rear position, when the writing member Qbl is moved back, the writing member Qbl A writing instrument provided with a sealing means for sealing between the writing member αe side.