JP2001260593A - Applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved ball point pen type applicator capable of mainly correcting an error in writing by concealing the same with white ink. SOLUTION: In the applicator which respectively has the tip of a ball point pen and an ink housing pipe at its leading and rear end parts and constituted so as to apply spring pressure to the back surface of a leading end ball to bring the leading end ball into close contact with the inner edge of the ball holding part formed to the leading end of the tip, a ball receiving member, which has the ball seat part being in contact with the back surface of the leading end ball, a channel part enabling the inflow of ink and a valve mechanism capable of hermetically closing an ink guide hole, in such a state that the tip of the ball point pen is turned upwardly, integrally provided to the front end thereof, is provided in the tip of the ball pen and a spring is provided to the rear end of the ball receiving member and the ball receiving member freely retreats in cooperation with the leading end ball by the pressing of the leading end ball accompanied by coating work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a ball-point pen type applicator which can correct errors and the like by concealing them with white ink.

[0002]

2. Description of the Related Art Conventionally, there has been known a liquid applicator using a white pigment in order to correct a mistake or the like. In addition, since a white pigment and a solvent are easily separated from each other, this type of liquid applicator has a flexible container in which ink, balls, and the like are sealed, and it is necessary to shake and agitate the liquid applicator before use. Further, the ink is ejected by pressing the side surface of the container. However, when the remaining amount of the ink becomes small, even if the side wall of the container is strongly pushed, the ink is not ejected. Further, the ink is easily solidified, and the tip of the application is sealed with a cap so as not to dry.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ball-point pen type applicator for correcting errors such as erroneous writing which does not require stirring and does not bother pressing the side of the container.

[0004]

The present invention has the following arrangement to achieve the above object. The applicator according to the first aspect of the present invention includes a tip of a ballpoint pen at the tip and an ink storage tube at the rear, and a spring is provided on the back surface of the tip ball so that the tip ball is in close contact with the inner edge of the ball holding portion at the tip of the tip. In the applicator to which the pressure is applied, the tip is inserted into the inner hole, the ball seat at the front end that contacts the back surface of the tip ball, the channel that allows the ink to flow in, and the tip of the tip. A ball receiving member integrally provided with a valve mechanism capable of closing the hole is provided, and a spring is provided at the rear end of the ball receiving member, and the tip of the ball is pressed by the coating operation and interlocks with the tip ball. The ball receiving member is configured to be able to retreat.

[0005] According to a second aspect of the present invention, there is provided the applicator according to the first aspect, wherein at least a white pigment such as titanium oxide and polymer hollow fine particles and a gelling agent are contained in the ink containing tube. The ink is filled with a white pigment ink formulated to prevent sedimentation of the pigment and to minimize the loss of fluidity, and a follower is provided at the rear end of the ink to follow the ink as the ink is consumed.

[0006]

1 to 4 show a first embodiment of the present invention. First, as shown in FIG. 1, a white pigment ink 8 is filled in an ink container 7 of an applicator 1, The rear end is filled with a grease-like or gel-like follower 9 that follows the ink as the ink is consumed. The follower 9 is not compatible with the ink and has a function of preventing the evaporation of the ink. In addition, a resin follower rod 10 having a specific gravity substantially equal to that of the follower is immersed in the follower as needed. The follower may be a follower such as a silicone rubber.

The white pigment ink 8 contains at least a white pigment such as titanium oxide and hollow polymer particles and a gelling agent, and is formulated so as to prevent sedimentation of the pigment and to minimize the loss of fluidity. It is a white pigment ink. In addition, since the ink has a shear thinning property, the viscosity can be reduced by the rotation of the tip ball, so that a coating having a high concealing property can be performed.

As shown in FIG. 2, the tip 2 is formed such that the inner edge of the ball holding portion 2a at the front end is in close contact with the tip ball 3 in a liquid-tight manner. The tip 2 has a ball seat portion 4b at the front end thereof, which is in contact with the back surface of the tip ball 3, a channel portion 4a through which ink can flow, and an ink guide hole with the tip upward facing the axis. A ball receiving member 4 having an integral valve mechanism is provided, and a spring 6 is provided at the rear end of the ball receiving member 4. The ball receiving member 4 is configured to be able to retreat freely.

The ball receiving member 4 has a groove-shaped channel portion 4b formed at a required portion at a front end thereof, and a valve chamber 4 at an axial center portion.
f is provided. A step 4c is provided at the front end of the valve chamber 4f.
However, a tapered or spherical valve body receiving seat 4d is formed at the rear end, and a guide hole 4e penetrates behind the valve body receiving seat 4d. The valve mechanism includes a spherical valve element 5 in a valve chamber 4f.
(A shape other than a sphere is also possible). As shown in the figure, since the step portion 4c is provided in a state of being engaged with the groove of the channel portion 4a, the valve element 5 can be easily inserted into the valve chamber 4f by elastic deformation. In addition, the valve mechanism is more complicated than the above structure, but when the tip is downward, the membrane-like lid opens to allow ink to flow out, and when the tip is upward, the lid closes to prevent ink backflow And the like.

A locking step 2b is formed on the inner surface of the rear end of the chip 2.
Is provided. The locking step 2b can be formed by various means depending on the design convenience such as the material of the chip 2 and the chip assembling process. The spring 6 is provided between the locking step 2 b and the rear end 4 g of the ball receiving member 4, and the ball seat 4 b of the ball receiving member 4 presses the back surface of the tip ball 3.

By the way, the tip ball 3 is the ball holding portion 2
Close contact with the inner surface of a is extremely important for drying the writing tip and preventing direct current of the ink even if the ink has a high viscosity. Therefore, especially in the case of a metal chip, the surface roughness of the inner surface of the chip holding the tip ball 3, the inner surface is ground to improve the close contact accuracy by caulking, and the secondary plastic working is performed to increase the caulking accuracy. Be considered. Also, if necessary, a surface treatment or the like may be considered on the surface in close contact with the tip ball.
In addition, the ballpoint pen type applicator for erroneous writing correction as in the present application,
In order to increase the ink ejection amount and eliminate clogging, the retreating dimension of the tip ball is set to be larger than that of a writing ball-point pen.

FIG. 5 shows a chip 11 according to a second embodiment of the present invention. The configuration other than the chip is the same as that of the first embodiment. Also, the chip is basically the same, and only the differences will be described below. As shown in the figure,
The tail plug 15 is inserted into the rear end hole of the chip 11, and the locking projection 15d provided on the tail plug 15 is provided on the locking step 11b provided on the inner hole surface of the chip by utilizing elastic deformation between them. And the tail plug is fixed to the chip. At this time, a spring 16 is provided between the rear end 13a of the ball receiving member 13 and the locking projection 15d of the tail plug. Further, the front end 15b of the shaft portion 15a of the tail plug extending forward and the ball receiving member 13
The rear end projection 13b is opposed to the rear end projection 13b at an appropriate interval, and the tip ball 12 and the ball receiving member 13 can be retracted in conjunction with the stroke of the interval.

FIG. 6 shows a chip 17 according to a third embodiment of the present invention. This case is also the same as the first embodiment except for the chip. Since the chip is almost the same as that of the second embodiment, only the differences will be described below. Since the tip ball and the ball receiving member retreat in conjunction with each other, the outer peripheral surface of the ball receiving member and the chip inner hole surface are in sliding contact with a slight gap. Therefore, it cannot be said that the valve chamber side and the guide hole side are completely shut off even when the valve body seals the guide hole. However, the function in practical use for preventing the backflow of ink is within a range that causes almost no problem. The chip 17 according to the second embodiment includes the ball receiving member 1
A seal member 19 is provided on the outer peripheral surface of the nozzle 8 so as to make a liquid-tight sliding contact between the chip 8 and the inner surface of the chip, so that the function of preventing the backflow of the ink completely works.

[0014]

Next, the operation of the embodiment will be described below. In a state where the tip for tip 2 is not pressed for application, the tip ball 3 is brought into close contact with the inner edge of the ball holding portion 2a of the tip by the pressing of the spring 6, so that the backflow of ink is prevented. When the tip 2 is facing upward, the valve body 5 is in close contact with the valve body receiving seat 4d and seals the guide hole 4e. There is no backflow. Therefore, when the chip 2 is turned downward, the ink can immediately flow out. By the way, in the structure without the valve element,
When the ink is applied upward, the ink flows backward.

The follower rod 10 is used when the ink container has a large diameter. In other words, the grease-like or gel-like follower 9 has a problem that when the ink container tube has a large diameter, the ink container tube is easily deformed and broken by the influence of impact or the like.
The rigidity can be increased by immersing a resin follower rod having a specific gravity substantially equal to that of the follower in the follower. The follower rod is effective when the ink storage tube has a large diameter and is likely to flow backward, or when repeated upward application or impact is applied. The applicator is not necessarily needed because it is rarely used upward.

[0016]

The present invention is as described above. A white pigment is prepared using an ink containing a white pigment and a gelling agent so as to prevent sedimentation of the pigment and not to impair the fluidity. It is possible to provide an easy-to-use ballpoint pen type applicator for erroneous writing correction which has no problem of separation from the solvent and therefore does not require stirring of the ink, with a simple structure.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a ball-point pen type applicator according to a first embodiment, showing a state in which a chip is directed upward.

FIG. 2 is a sectional view of the chip according to the first embodiment, showing an upward state.

FIG. 3 is a longitudinal sectional view of the ball-point pen type applicator according to the first embodiment, showing a state in which a chip is directed downward.

FIG. 4 is a cross-sectional view of the chip according to the first embodiment, showing a downward state.

FIG. 5 is a cross-sectional view of the chip according to the second embodiment, showing an upward state.

FIG. 6 is a cross-sectional view of a chip according to a third embodiment, showing an upward state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Applicator 2 Tip 2a Ball holding part 2b Locking step part 3 Tip ball 4 Ball receiving member 4a Channel part 4b Ball seat part 4c Step part 4d Valve body receiving seat 4e Guide hole 4f Valve chamber 4g Rear end part 5 Valve body Reference Signs List 6 spring 7 ink storage tube 8 ink 9 follower 10 follower rod 11 tip 11a ball holding portion 11b locking step portion 12 tip ball 13 ball receiving member 13a rear end portion 13b rear end convex portion 14 valve body 15 tail plug 15a shaft portion 15b Front end 15c Flange 15d Locking convex 16 Spring 17 Tip 18 Ball receiving member 19 Sealing member 20 Tip ball 21 Valve chamber 22 Guide hole 23 Valve body

Claims (2)

[Claims] An applicator having a tip of a ballpoint pen at the tip and an ink storage tube at the rear, and a spring pressure applied to the back surface of the tip ball so that the tip ball is in close contact with the inner edge of the ball holding portion at the tip of the tip. In the above-mentioned chip, a ball seat portion which comes into contact with the back surface of the tip ball at the front end, a channel portion which allows ink to flow in, and a valve which allows the ink hole to be sealed upward with the chip centered at the front end. A ball receiving member having an integral mechanism is provided,
A spring is arranged at the rear end of the ball receiving member,
An applicator characterized in that the ball receiving member is configured to be able to retreat in conjunction with the tip ball by pressing the tip ball during the coating operation. 2. The ink containing tube contains at least a white pigment such as titanium oxide and polymer hollow fine particles and a gelling agent,
2. A white pigment ink compounded so as to prevent sedimentation of the pigment and to minimize the loss of fluidity, and a follower is provided at the rear end of the ink to follow the ink as the ink is consumed. An applicator according to item 1.