JPH0593877U - Writing or applicator - Google Patents

Abstract

(57) [Abstract] [Purpose] No ink leaks from the tip of the brush tip 4.
In addition, it is possible to smoothly draw out the ink to the tip of the brush tip 4. [Structure] A tip 4 of an ink guide core 3 is covered with a brush tip 4 made of a synthetic resin porous body. The holding tube 5 is attached to the front part of the shaft tube 2, and the holding portion 52 of the holding tube 5 presses the middle portion of the writing tip 4 to fix the writing tip 4. Further, an annular small space portion 6 for storing ink is formed between the inner wall of the holding cylinder 5 and the outer peripheral surface of the rear portion of the writing tip 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a writing implement or a makeup applicator such as an eyeliner. More specifically, the tip of the ink guide core, the tip of which is projected from the tip of the barrel and the rear of which is connected to the raw ink reservoir, is covered with a brush tip made of a synthetic resin porous body, and the barrel is attached. The present invention relates to a writing or applicator having a structure in which the writing tip is fixed by attaching a holding tube to the front part.

[0002]

[Prior Art]

 Conventionally, this type of writing or applicator is a holder attached to the front part of the shaft cylinder by forming a flange part at the rear end of the writing tip made of a synthetic resin porous body, the flange part being in contact with the front end of the shaft cylinder. There is generally known a structure in which the collar portion is sandwiched in the axial direction. (For example, Japanese Utility Model Laid-Open No. 59-184682, etc.)

[0003]

[Problems to be solved by the device]

 However, in the applicator using the conventional brush tip fixing structure (Fig. 4), the brim portion at the rear end of the brush tip held by the holder has a larger capillary force than the tip portion of the brush tip, and ink tends to collect at the brim portion. Therefore, it was not possible to smoothly derive the ink to the tip of the brush tip.

When excess ink is supplied to the brush tip from the ink guide core due to a sudden temperature change or impact, the excess ink passes through the rear portion of the brush tip without a liquid retaining space and immediately reaches the tip of the brush tip. Since it would reach, I often leaked ink from the tip of the brush tip.

The present invention has been made to solve the above-mentioned conventional problems, and provides a coating tool that enables smooth ink discharge to the tip of the writing brush and does not leak ink from the tip of the writing brush. It is the one we are trying to provide.

[0006]

[Means for Solving the Problems]

 The writing or applicator 1 of the present invention is made of a synthetic resin porous body at the tip of the ink guide core 3 connected to the raw ink reservoir 21 at the tip of which is projected from the tip of the barrel 2. A writing or applicator having a structure in which the writing tip 4 is fixed and the writing tip 4 is fixed by attaching the holding tip 5 to the front portion of the shaft tube 2, and the writing tip 4 has a central hole 51 of the holding tip 5. The front end of the holding cylinder 5 is projected from the front end of the holding cylinder 5 and the rear end of the holding cylinder 5 is in contact with the front end of the holding cylinder 5. It is a requirement that a pinching portion 52 for pinching is provided and an annular small space portion 6 is formed between the inner wall of the holding cylinder 5 behind the pinching portion 52 and the outer peripheral surface of the rear portion of the writing tip 4.

The annular small space portion 6 is a gap formed by holding the outer peripheral surface of the rear portion of the writing tip 4 and the inner wall of the holding cylinder 5 in a non-contact state. Specifically, there are various configurations such as one in which a reduced diameter portion is provided in the front part of the holding cylinder 5 and formed behind it (FIG. 1), and one in which a peripheral groove is provided on the outer peripheral surface of the rear part of the writing tip 4 (FIG. 2). Examples include, but are not limited to: The annular small space portion 6 may be communicated with an air discharge hole that communicates with the outside.

At the front end of the shaft cylinder 2, an ink retaining member 7 that temporarily retains ink according to the internal pressure change in the raw ink reservoir, a support cylinder that supports the ink guide core 3, and the like are attached. That is, the front end of the shaft cylinder 2 with which the rear end of the brush tip 4 abuts is not only the front end of the shaft cylinder 2 but also the front end of the ink retaining member 7 or the front end of the shaft cylinder 2 such as the front end of the support cylinder. It may be the front end of another member attached to the section, or may be the step of the ink guide core 3.

As the writing brush 4, a porous body having continuous pores made of synthetic resin material such as conventionally known polyurethane, vinyl acetate-ethylene copolymer, polyvinyl chloride, and other thermoplastic elastomer is applied. A fiber bundle or the like is used as the ink guide core 3.

[0010]

[Action]

 The annular small space portion 6 is closed at the front by the holding portion 52 of the holding cylinder 5, and serves as an ink storage space when excess ink is supplied from the ink guide core 3, and prevents ink leakage from the tip of the writing tip 4. . The annular small space portion 6 also functions as a burr that is likely to be formed on the outer edge of the rear end of the writing tip 4 during cutting, and as an escape space for radially outward deformation when the writing tip 4 is attached. The holding part 52 of the holding tube 5 presses the outer peripheral surface of the middle part of the writing tip 4 in close contact with each other, and the capillary force of the pressing part of the writing tip 4 is made larger than that of the rear part of the writing tip 4, so that the tip of the writing tip 4 is smoothly lubricated. Ink can be discharged, and it is possible to prevent the ink from flowing out from the four circumferential surfaces of the brush tip.

[0011]

【Example】

 Embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment of the writing or applicator 1 of the present invention. At the front part of the shaft cylinder 2, an ink retaining member 7 having a liquid retaining groove 72 composed of a large number of comb teeth on the peripheral surface, and an ink guide slit 73 and an air groove 74 in the axial direction formed on the comb tooth is mounted. A raw ink reservoir (not shown) is formed at the rear of the shaft cylinder 2.

An ink guide core 3 made of a resin processed body of an acrylic fiber bundle is inserted into a through hole 71 at the center of the ink retaining member 7, and the ink guide core 3 is guided from the front end of the ink retaining member 7. The tapered tip of the core 3 is projected. A tapered writing tip 4 made of a polyurethane resin porous body having continuous pores is attached to the tip of the ink guiding core 3, and the rear end of the writing tip 4 contacts the front end of the ink retaining member 7. Has been done.

The holding cylinder 5 has a center hole 51 penetratingly formed therein, a sandwiching portion 52 formed in the front portion, and a fitting portion 53 formed in the rear portion. The brush tip 4 is inserted into the center hole 51, and the brush tip 4 is inserted. The tip portion is projected from the front end of the holding cylinder 5. The holding portion 52 is reduced in diameter to press the middle outer peripheral surface of the writing tip 4 in a close contact state, while the fitting portion 53 is fitted to the front portion of the ink retaining member 7. As a result, an annular small space 6 having a substantially vertical cross section is formed between the outer peripheral surface of the rear portion of the writing tip 4 and the inner wall of the holding cylinder 5.

The outer peripheral surface of the front portion of the ink retaining member 7 into which the retaining cylinder 5 is fitted is partially cut away, and the retaining cylinder is held in the air hole 74 opened at the front end of the ink retaining member 7. Since the rear end portion 5 is in contact, an air discharge passage 61 is formed between the rear end portion 5 and the fitting portion 53 of the holding cylinder 5. Thereby, when the ink starts to be stored in the annular small space portion 6, the air in the annular small space portion 6 can be smoothly released to the outside.

FIG. 3 shows a second embodiment. As in FIG. 1, the ink retaining member 7 is attached to the front part of the barrel 2. The brush tip 4 has a diameter-reduced step portion 41 at the rear end portion, is attached to the front end portion of the ink guide core 3, and the rear end portion is in contact with the front end of the ink retaining member 7. The holding cylinder 5 has a center hole 51 having a diameter slightly smaller than that of the body of the writing tip 4, and when fitted to the front part of the ink retaining member 7, the body of the writing tip 4 is clamped at the front part of the holding cylinder 5. At the same time, the reduced diameter step portion 41 forms an annular small space portion 6 between the outer peripheral surface of the rear portion of the writing tip 4 and the inner wall of the holding cylinder 5. Other configurations are the same as those in the first embodiment.

[0016]

[Effect of the device]

 The present invention has a structure in which the middle part of the brush tip is pressed by a holding cylinder and a structure in which a small annular space is provided in the back part of the brush tip. Ink can be led out, and even if excess ink is supplied, ink leakage from the tip of the writing brush can be prevented.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a main part showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a longitudinal sectional view of an essential part showing a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Writing or applicator 2 Shaft cylinder 3 Ink guide core 4 Writing tip 41 Reduced diameter step part 5 Holding cylinder 51 Central hole 52 Clamping part 53 Fitting part 6 Annular small space part 61 Air discharge path 7 Ink retaining member 71 Through hole 72 Liquid retaining groove 73 Ink guide slit 74 Air groove 75 Air hole

Claims (1)

[Scope of utility model registration request] 1. A brush cylinder made of a synthetic resin porous body is attached to the tip of an ink guide core, the tip of which is projected from the tip of the barrel and the rear of which is connected to the raw ink reservoir. In a writing or applicator having a structure in which the writing tip is fixed by attaching a holding tube to the front portion, the writing tip 4 is inserted into a center hole 51 of the holding tube 5 and the tip portion projects from the front end of the holding tube 5. The rear end is in contact with the front end of the shaft cylinder 2, and the holding cylinder 5 has a front inner wall provided with a holding portion 52 for holding the outer peripheral surface of the middle portion of the writing tip 4 in a radial direction. A writing or applicator 1 characterized in that an annular small space portion 6 is formed between the inner wall of the holding cylinder 5 and the outer peripheral surface of the rear portion of the writing tip 4.