JPH1134572A - Coating applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit forward flow of ink even in the case of bringing about an accident of dropping an end ball owing to deformation or wear by forcible writing or dropping impact in a coating applicator for containing aqueous or oily writing ink or wrong character concealing eraser as coating liquid. SOLUTION: In the coating applicator comprising an end ball 11, a holder 9 having a ball seat 10a, a clearance for passing coating liquid between an inner surface of a ball embracing part 10 of an end of the holder 9 and the ball 11, and a coater 8 having an elastic member 13 for pressing a back surface of the ball 11 to watertightly seal between the inner surface of the part 10 and the ball 11 and clamped at an end of a body container having flexibility to easily press the coater 8, a step 9b is provided on a rear surface of a guide hole 10c of the holder 9 for bringing the liquid in continuity to the ball 11. And, a contact part 12b cooperating with the member 12 is provided oppsitely at the step 9b so that at the time of bringing the part 12b into contact with the step 9b, a watertight state is provided between the part 12b and the step 9b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applicator in which a water-based or oil-based writing ink, a correction liquid for concealing typographical errors, and the like are stored as a coating liquid.

[0002]

2. Description of the Related Art Conventionally, a clearance for flowing a coating liquid between an inner surface of a ball holding portion at the tip of a holder and a tip ball is provided for fine writing or correction of details. And a ball-point pen type in which a resilient body that presses the back surface of the tip ball so as to be watertight is provided, and the coated body is fixed to the tip of a flexible main body container that is easily pressed. Applicators are known. In such an applicator, since the ball holding portion at the tip of the holder holding the tip ball is formed to be minute and thin, there is a risk that the tip ball may fall off due to deformation or wear due to excessive writing or drop impact. . In the unlikely event that an accident occurs, there is a danger that the coating solution will flow direct current and contaminate the surroundings.

[0003]

SUMMARY OF THE INVENTION The present invention relates to an applicator containing a water-based or oil-based writing ink, a correction liquid for concealing typographical errors, or the like as a coating liquid, which is deformed or worn by excessive writing or drop impact. Accordingly, even when an accident in which the tip ball falls off occurs, the ink direct current can be blocked.

[0004]

The present invention has the following arrangement to achieve the above object. The ballpoint pen according to the first aspect of the present invention provides a holder having a tip ball and a ball receiving seat, a clearance between the tip ball and the inner surface of the ball holding portion at the tip of the holder, and a ball holding device. A coating body provided with a resilient member for pressing the back surface of the tip ball so that the inner surface of the portion and the tip ball are water-tight, and the coating body is fixed to the tip of a flexible main body container that is easily pressed. In the applicator that is made, a step is provided on the rear surface of the guide hole of the holder that conducts the application liquid to the tip ball, and a contact portion that opposes the step and interlocks with the elastic body is provided. When the contact portion abuts on the step portion, the contact portions are configured to be watertight.

A ballpoint pen according to a second aspect of the present invention is the ballpoint pen according to the first aspect, wherein a pusher is disposed at the front end of the resilient body, and a small diameter tip provided at the tip of the pusher. And a contact portion facing the step of the holder is provided behind the small diameter portion.

[0006]

1 to 4 show an embodiment of the present invention. The applicator 1 is mainly composed of an applicator 8, a joint 5, and a main body container 2. First, a ball house is formed at the tip of the holder 9, and a ball receiving seat 10 a having a channel 10 b pierced at an appropriate depth is provided at the rear end of the ball house. The ball receiving seat 10 a contacts the ball receiving seat and is inserted into the ball house. The ball holding portion 10 is provided so that the tip ball 11 is fitted therein, the tip of the holder is caulked circumferentially, and the tip ball 11 is prevented from rotating.
Note that a clearance 10 d through which the coating liquid flows is formed between the inner surface of the ball holding unit 10 and the tip ball 11. or,
A guide hole 10c penetrating through the inner hole 9a of the holder is provided at the center of the ball house, and a tapered step 9b is formed at the rear end of the guide hole 10c.

A pusher 12 is movably inserted into the inner hole 9a of the holder. The pushing body 12 is formed of a small-diameter portion 12a, a middle-diameter portion 12c, a large-diameter portion 12d, and a rear-shaft portion 12e from the distal end side, and the distal end of the small-diameter portion 12a abuts on the back surface of the distal ball 11. Further, a tapered contact portion 12b is formed at a connection portion between the small diameter portion 12a and the middle diameter portion 12c so as to face the step 9b. Also, the large diameter portion 12d of the push body
A resilient body 13 is disposed at the rear end, and pushes the push body 12 forward, thereby pressing the back surface of the tip ball so that the inner surface of the ball holding portion 10 and the tip ball 11 are watertight. Above,
The application body 8 is configured.

There are various examples of means for providing a contact portion facing the step portion 9b provided on the holder. One of the other examples is a linear rod having a resilient body at the tip. It is also possible to form a coil spring having a shaft portion so that the rod shaft portion is in contact with the back surface of the tip ball, and a contact member such as rubber is fixed to the rear end of the rod shaft portion. . The contact member is not limited to rubber or the like, but may be metal or plastic.

The joint 5 has a flange 7 at the front and a shaft at the rear, and a through hole at the shaft center. The rear end of the holder 9 is crimped to the front end of the through hole. In addition, a vertical rib 6a is formed at a location on the rear inner peripheral portion of the through hole,
The rear end of the elastic body 13 abuts on a step provided at the required position of the vertical rib 6a.

The main body container 2 is a flexible cylindrical body in which at least a main part on the side surface of the container is formed in a thin-walled shape. Is done.
Further, the main body container is filled with a coating liquid such as a water-based or oil-based writing ink, a correction liquid for concealing typographical errors, and a stirring ball 15 for stirring the coating liquid. In addition, as a material of the main body container 2, for oiliness, the material of the main body container 2 is:
For example, a nylon resin is more preferable, and for water use, for example, a polypropylene or polyethylene resin is preferable.
In particular, nylon resin has a good gas barrier property against a so-called organic solvent and has flexibility, so that it is suitable for the material of the main container 2 for oil-based ink. Thus, the applicator 1 is configured.

[0011]

1 and 2 show a state before writing with the coating body 8 facing down. In this state, the tip ball 11 is brought into close contact with the inner surface of the ball holding portion 10 of the holder by the pressing of the pressing body 12. Therefore, direct current of the coating solution is prevented. FIG.
As shown in (1), the tip ball 11 is appropriately retracted by the pen pressure, so that a clearance 10d is generated and the coating liquid can flow out.

By the way, in the event that the tip ball 11 falls off due to the influence of excessive writing or drop impact, as shown in FIG. To prevent the direct current of the coating liquid from coming into contact.

[0013]

The configuration and operation of the applicator according to the present invention are as described above. Even if an accidental drop of the ball at the tip occurs due to unreasonable writing or a drop impact, the direct current of the coating solution is maintained. It can be prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an entire applicator according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of a coating body.

FIG. 3 is an enlarged cross-sectional view of a main part of an application body in a state of application.

FIG. 4 is an enlarged cross-sectional view of a main part of a coating body in a state where a tip ball has dropped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Applicator 2 Main body container 3 Taper part 4 Inner cylinder part 5 Joint 6 Shaft part 6a Vertical rib 7 Flange part 7a Step part 8 Application body 9 Holder 9a Inner hole part 9b Step part 10 Ball holding part 10a Ball receiving seat 10b Channel 10c Guide hole 10d Clearance 11 Tip ball 12 Pressed body 12a Small diameter part 12b Contact part 12c Medium diameter part 12d Large diameter part 12e Rear shaft part 13 Elastic body 14 Coating liquid 15 Stirring ball

Claims (2)

[Claims] 1. A holder having a tip ball and a ball receiving seat, and a clearance through which an application liquid flows between an inner surface of a ball holding portion at the tip of the holder and the tip ball,
An application body provided with a resilient member for pressing the back surface of the tip ball so that the inner surface of the ball holding portion and the tip ball are water-tight, and a tip end of a flexible main body container that is easily pressed by the application body. In the application tool fixed to the above, a step portion is provided on the rear surface of the guide hole of the holder for conducting the application liquid to the tip ball, and the contact portion opposing the step portion and interlocking with the elastic body. And a watertight state between the steps when the contact portion comes into contact with the step portion. 2. A push body is provided at the front end of the resilient body, and the back surface of the tip ball is pressed by the tip of the small diameter portion provided at the tip of the push body, and faces the step of the holder behind the small diameter portion. The applicator according to claim 1, further comprising a contact portion that performs contact.