JPH0614842Y2 - Applicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an applicator such as a writing tool such as a writing pen and a makeup tool such as an eyeliner, which has a brush made of a fiber bundle having a rear end bound.

(Prior Art) The applicant previously described in Japanese Utility Model Application Laid-Open No. 62-194086 that "in a brush-clamping tube fixed to a shaft cylinder, a brush-cushion in which a fiber material is focused, and a brush-crush base portion. A brush-like writing instrument in which an ink guide core to be abutted and an ink reservoir having an ink reservoir part in which a small diameter part of the ink guide core is disposed while being in contact with the ink guide core and having a central hole thereof are sequentially inserted. Then, a brush-sheath fixing tube is formed in which an ink outflow groove is formed on the inner surface of the brush-sheath fixing tube toward the front from the position facing the tip side surface of the ink guide core. ”

An example of an applicator using the above-mentioned brush-fixing tube is shown in FIG.

The brush tip 10 has no ink conducting action on the bottom surface and the collar portion 11 formed by bundling the rear end with heat welding or by molding with another curable resin. Therefore, the ink that is the coating liquid passes from the ink tank (not shown) behind the shaft cylinder 30 through the ink guide core 40, and the tip large diameter portion 42 of the ink guide core 40.
It moves from the side surface to the ink outflow groove 24 provided on the inner wall of the penetrating hole of the brush ear fixing tube 20, and penetrates into the brush ear 10 from the ink outflow groove 24.

(Problems to be Solved by the Invention) The present invention is a further development of the above-mentioned Japanese Utility Model Application Laid-Open No. 62-194086, and aims to further stabilize the ink transferability.

(Means for Solving the Problems) The present inventor has found that the fiber arrangement direction of the ink guide core at the contact portion between the ink guide core and the ink outflow groove (that is, the main capillary direction in the ink guide core. The direction of the secondary capillaries is the direction that intersects with the array direction of the fibers.)
It has been found that it is possible to prevent variations in ink transmission due to factors such as the fibers of the ink guide core entering the ink outflow groove by intersecting with the direction of the ink outflow groove.

According to the present invention, a brush-fixing tube having a through hole at the tip end opening of a shaft tube is fixed, and a brush tip having a brim portion formed by binding the rear end of a fiber bundle is inserted into this brush-fixing tube through hole. An applicator in which a fiber bundle ink guide core front end inserted through a through hole of a temporary ink reservoir member arranged in a shaft cylinder is in contact with a brush tip rear end,
An applicator in which the large-diameter portion of the front end of the ink lead is brought into contact with an ink outflow groove provided in the inner wall of the penetrating hole fixing tube through hole so as to face forward from the position facing the large-diameter portion of the front end of the ink lead core In the above, the applicator is characterized in that the main capillary direction of at least a portion of the front-end large-diameter portion of the ink guide core that comes into contact with the ink outflow groove intersects the direction of the ink outflow groove. It is what

(Embodiment) In the accompanying drawings, the same reference numerals are used for the basically same members in the embodiment and the conventional example.

1 and 2 show an embodiment of the present invention.

Reference numeral 10 is a brush tip, 20 is a brush tip fixing tube, and 30 is a barrel.

The brush-fixing tube 20 is press-fitted into the shaft cylinder 30,
The collar 21 and the tip of the shaft cylinder are in contact with each other and fixed. Brush brush 1
No. 0 is inserted into the through hole of the brush ear fixing tube 20, and the brim 11 provided at the base of the brush ear fixing tube 10 and the step portion 22 inside the through hole of the brush ear fixing tube 20 are fixed to each other. On the bottom surface of the collar portion 11 provided at the base portion of the brush 10, there is a large diameter portion 42 of the ink guide core 40 in which a small diameter portion 41 of the ink guide core 40 is inserted into a through hole of the temporary ink reservoir member 50. Are in contact.

The large-diameter portion 42 of the ink guide core 40 is formed in an extension of the small-diameter portion 41 of the ink guide core 40 so that the fiber arrangement direction (that is, the direction of the main capillaries) is perpendicular to the axis. The ink conducting portion 42a is capped and formed so as to be in contact with the ink outflow groove 24 on the inner wall of the through hole of the brush-fixing tube 20.

The temporary ink sump member 50 has a comb-shaped temporary ink sump portion 51 having a longitudinal cross section that absorbs the excessively discharged ink.
The temporary ink reservoir member 50 is fitted or loosely inserted in the barrel 30.

Reference numeral 31 is an air circulation groove provided on the front shaft 30, and 23 is an air circulation groove provided on the outer peripheral surface of the brush-fixing tube 20.

(Advantageous effects of the device) Since the applicator of the present invention is configured as described above, the ink that has penetrated to the tip of the ink guide core 40 flows out from the ink conducting portion 42a to the ink outflow groove 24, and the ink outflow groove 24. Penetrates into brush tip 10.

In this case, the direction in which the fibers of the ink conducting portion 42a are arranged (that is, the direction of the main capillary) is perpendicular to the axis, and the direction of the major capillary of the ink conducting portion 42a and the direction of the ink outflow groove 24 intersect. Therefore, the ink transmission is stable without causing a problem such as the fiber of the ink guide core getting into the ink outflow groove.

Here, from the ink outflow groove 24 of the brush tip fixed tube 20 to the brush tip 1
The same contact relationship holds for ink penetration to zero. Therefore, the fiber bundle of the brush tip is mixed with straight bristles and curved crimp bristles so that the arrangement direction of each fiber of the brush tip 10 intersects with the direction of the ink outflow groove 24 on the inner wall of the through hole of the brush tip fixing tube 20. Alternatively, it is preferable that the crimp bristles are formed of a bundle.

Furthermore, it is sufficient that the arrangement direction of the fibers of the ink conducting portion 42a intersects with the direction of the ink outflow groove 24 on the inner wall of the penetrating fixing tube 20 through-hole, so that even if they are arranged radially, they are all the same. The ink conducting portions 24a may not be aligned in the direction, and the ink conducting portion 24a may be formed of a material other than fibers such as a fine spherical resin sintered body or a communicating porous body.

The ink conducting portion 42a may be integrally formed as the ink guide core 40.
Not only the ring shape but also the C ring shape may be used, and various forms are possible as long as they do not deviate from the object and configuration of the present invention.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of an essential part of the embodiment, FIG. 2 is a lateral sectional view taken along the line II of FIG. 1, and FIG. It is a principal part longitudinal cross-sectional view of the applicator of an example. 10 …… Brush Ear, 11 …… Bill part, 20 …… Brush Ear Fixed Tube, 2
4 ... Ink outflow groove, 30 ... Shaft cylinder, 40 ... Ink lead core, 42 ... Front end large diameter portion, 42a ... Ink conducting portion, 5
0 ... Temporary ink reservoir

Claims (1)

[Scope of utility model registration request] 1. A brush ear fixing tube having a through hole at an opening of a tip end of a barrel is fixed to the brush ear fixing tube through hole, and a brush ear formed by binding a rear end of a fiber bundle to form a collar portion is inserted. An applicator in which the front end of the ink guide core made of a fiber bundle, which is inserted through the through hole of the temporary ink reservoir member arranged in the shaft cylinder, is brought into contact with the rear end of the brush tip, and the front end of the ink guide core is large. In the applicator in which the diameter portion is brought into contact with the ink outflow groove provided in the inner wall of the through-hole for the brush-fixing tube through the inner wall of the through-hole to face the front end large diameter portion of the ink guide core, An applicator characterized in that at least a portion of the front end large diameter portion of the core, which is in contact with the ink outflow groove, intersects a direction of a main capillary tube with the direction of the ink outflow groove.