JP3034448B2 - Coating and writing instrument caps - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for an applicator and a writing instrument containing, for example, glue, correction liquid, cosmetic liquid, ink and the like.

[0002]

2. Description of the Related Art Conventionally, there are a wide variety of applicators and writing implements containing liquids of low viscosity, medium viscosity, or high viscosity, and various appearances have been commercialized and provided to the world. Among them, the cap has two functions: to protect the tip of the applicator and writing instrument, and to prevent drying of the applicator and ink. In addition, the applicator and the writing instrument are attached to the pocket of the clothes with the attached clip. Attach 3 etc.
It is designed to be detachable from the barrel body as it also has a function to give one function, and when using an applicator or writing instrument, the cap should be attached to the tip of the applicator or writing instrument etc. of the barrel body. It is common usage to remove the cap from the side and fit the cap on the rear end side of the barrel body.

FIG. 8 shows an example of a structure in which a cap is fitted when used in a conventional applicator and writing instrument. FIG. 9 is an arrow view taken along the line II in FIG. In FIG. 8, the illustrated cap 1 is
It is formed of an elastically deformable synthetic resin material or the like, and the inner periphery of the cap opening 1c has a cylindrical shape. On the other hand, at the rear end side of the barrel main body 2, a cylindrical portion 2a slightly larger than the inner diameter of the cap 1 fitted with the cap 1 is formed with a step, and as the cap 1 is inserted, I try to stop it. Also, as another example (not shown), a cap is formed using a soft or hard resin material,
Instead of making the inner periphery of the cap opening cylindrical, make the inner periphery shape of the cap opening and the outer periphery shape of the rear end side of the barrel body similar, and place the cap behind the barrel body when using an applicator or writing instrument. Some are fitted on the end side.

[0004]

However, the shaft cylinder body and the cap in the above-mentioned applicator and writing instrument have a problem that the design is restricted in appearance and the shapes become similar or dissimilar. For this reason, if the inner peripheral shape of the cap opening and the outer peripheral shape of the rear end side of the barrel body are not similar, and if a novel and novel design is used, when using an applicator or writing When the cap or the writing instrument is removed from the distal end side of the barrel main body and the cap is inserted into the rear end side of the barrel main body, a problem arises in that the cap is wobbly or falls off.

In the case where the material of the cap is formed using a hard resin, since the material used is hard,
When inserted into the barrel body, there is a problem that the cap is lost due to loosening or falling off, which is very troublesome for the user.

However, according to the present invention, there is no restriction that the inner peripheral shape of the cap opening must be similar to the outer peripheral shape of the barrel body, and the degree of freedom in design can be increased. Even when the cap is made of a soft or hard resin, it is an object of the present invention to prevent problems such as glare or falling off when the cap is fitted to the rear end side of the barrel body.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an applicator and a writing instrument containing a low-viscosity, medium-viscosity, or high-viscosity liquid therein. Or a cap detachably attached to the distal end side of the writing instrument, wherein a concave portion having substantially the same shape as the outer peripheral surface of the rear end side of the barrel body is formed inside the cap; A convex receiving portion for holding the outer peripheral surface on the rear end side of the cylindrical main body is formed, and when the cap is attached to the rear end side of the cylindrical main body, the concave portion and the convex receiving portion are It is characterized by being engaged with the outer peripheral surface on the rear end side and fitted.

[0008] The present invention is characterized in that at least two of the concave portions provided inside the cap are formed so as to be symmetrical with respect to the center axis of the barrel body.

In the present invention, at least two or more of the protrusions provided inside the cap are formed integrally with or separately from the cap body so as to be symmetric with respect to the center axis of the barrel body. , Or provided.

A groove or a bead portion is formed in the concave portion provided inside the cap of the present invention, and the concave portion formed in the concave portion is formed on an outer peripheral surface on a rear end side of the barrel body. A groove or a bead or a groove corresponding to the bead is formed, and when the cap is attached to the rear end side of the barrel body, the cap is fitted and fitted to each other.

[0011] The tip of the convex receiving portion provided inside the cap of the present invention is formed by a ridge line having substantially the same shape as the outer peripheral shape in the axial direction on the rear end side of the barrel body. It was done.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments. An embodiment of the first invention An applicator in which a high-viscosity liquid is stored inside a barrel body,
Alternatively, in a writing instrument, a cap that is detachably attached to the tip end of the coating device or the writing instrument in the barrel body is formed of an elastically deformable material such as a soft resin. Forming recesses of substantially the same shape corresponding to the outer peripheral surface of the integrally formed barrel body so as to be symmetrical with respect to the central axis of the barrel body,
Further, two convex receiving portions that come into contact with the cap when the cap is inserted into the barrel body are provided symmetrically with respect to the central axis of the barrel body. Incidentally, the convex receiving portion may be fixed to the inside of the cap separately from the cap. The tip of the convex receiving portion is formed by a ridge line having substantially the same shape as the outer peripheral shape on the rear end side in the axial direction of the barrel body, and the cross section of the convex receiving portion in a direction perpendicular to the axis of the cap is trapezoidal. It is in various shapes. The cross-sectional shape may be rectangular or another shape.

When the applicator or the writing instrument is used, the cap is fitted on the rear end of the barrel body. The cap is actually fitted into the rear end of the barrel body. The cap is held on the outer peripheral surface on the rear end side of the barrel body by the concave portion and the convex receiving portion formed inside the cap. That is, the concave portion is fitted as a concave surface corresponding to the outer peripheral surface on the rear end side of the barrel body, and the convex receiving portion contacts the outer peripheral surface on the rear end side so as to press the outer surface. Then, when the cap is further pushed in, the convex receiving portion made of synthetic resin is somewhat elastically deformed and adheres to the outer peripheral surface on the rear end side. Therefore, the cap is completely held by the concave portion and the convex receiving portion. However, even if the outer peripheral surface of the rear end side of the barrel body and the shape of the cap opening are not similar to each other, since the engaging portion is engaged with the concave portion formed inside the cap and the convex receiving portion, the lateral vibration, And play can be prevented, and fitting can be ensured.

Next, a second embodiment of the present invention will be described. Embodiment of the second invention An applicator containing a high-viscosity liquid inside a barrel body,
Alternatively, in a writing instrument, a cap that is detachably attached to the tip end of the application tool or the writing instrument in the barrel body is formed of a hard synthetic resin material, and the inside of the cap is formed integrally with the cap. Two recesses having substantially the same shape corresponding to the outer peripheral surface on the rear end side of the barrel body are formed so as to be symmetrical with respect to the central axis of the barrel body.
A bead portion is formed in the concave portion provided inside the cap, and a groove portion corresponding to the bead portion of the concave portion is formed on the outer peripheral surface on the rear end side of the barrel body. (The bead portion of the concave portion may be formed with a groove, and the groove portion on the rear end side of the barrel body may be formed in a bead portion.) Inside the cap, A convex receiving portion that comes into contact when the cap is inserted is formed of a resin material, and is fixed separately from the cap at two locations so as to be symmetric with respect to the center axis of the barrel body. Incidentally, the convex receiving portion may be formed integrally with the cap. Also, the tip of the convex receiving portion is
The portion that comes into contact with the outer peripheral surface on the rear end side of the barrel body is formed by a ridge line having substantially the same shape as the outer peripheral shape on the rear end side in the axial direction of the barrel body. The tip of the convex receiving portion may be formed with a pin or the like so as to make partial point contact.

When the applicator or the writing instrument is used, the cap is fitted to the rear end of the barrel body. The cap is actually inserted into the rear end of the barrel body. And the concave portion and the convex receiving portion formed inside the cap are fitted as concave surfaces corresponding to the outer peripheral surface on the rear end side of the barrel body, and the convex receiving portion is located on the rear end side. It comes in contact with the outer surface of the device. Then, when the cap is further pushed in, the convex receiving portion comes into close contact with the outer peripheral surface on the rear end side of the barrel main body, and the bead portion formed in the concave portion of the cap and the rear portion of the barrel main body. The groove formed on the outer peripheral surface on the end side is fitted and fitted to each other and held. However, even if the outer peripheral surface of the rear end side of the barrel body and the shape of the cap opening are not similar to each other, since the engaging portion is engaged with the concave portion formed inside the cap and the convex receiving portion, the lateral vibration, And play can be prevented, and fitting can be ensured.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. In the embodiments, the same members and the same portions are denoted by the same reference numerals.

A first embodiment of a cap for an applicator according to the present invention will be described below with reference to FIGS. First Embodiment FIG. 1 shows a state in which a cap according to an embodiment of the present invention is fitted to the rear end side of a barrel body. In the figure, reference numeral 2 denotes a shaft cylinder main body for storing a high-viscosity liquid, which is made of resin in the present invention. The tip 4 holding the spherical coating body 5 is connected via a neck 7 to the distal end side of the barrel 2.
Note that the shaft cylinder main body, the application device, and the internal structure in which the cap and the application device are fitted are out of the scope of the present invention, and thus the detailed description is omitted. The shape of the barrel body 2 is such that the cross section of the mounting portion with the neck 7 is made elliptical, the outer shape of the barrel body 2 in the axial direction is parabolic, and gradually becomes a cannonball shape toward the closing part. It is. Reference numeral 1 denotes an application tool 6 of the barrel body 2.
Is a cap which is detachably attached to the tip end side, but is formed of a soft resin material.

FIG. 2 is a perspective view of the cap 1. In FIG. 2, the shape of the cap 1 is such that the cap opening 1c has the same elliptical shape as the barrel body 2, and the cap 1 has the same shape. The outer peripheral shape is made to be streamlined toward the closed portion of No. 1. In addition, about the cap 1, PO
A cap made of M resin is used, and a resin clip 3 is formed on the cap 1. Inside the cap 1, a concave portion 1 b formed substantially integrally with the cap 1 and having substantially the same shape as the outer peripheral surface on the rear end side of the barrel body 2, and a rear end side of the barrel body 2 are formed. Two convex receiving portions 1a are formed on the inner surface of the cap opening 1c in the narrow direction and the inner surface of the cap opening 1c in the wide direction so as to be symmetrical with respect to the center axis of the cap 1. . In addition, the convex receiving portion 1a
May be separated from the cap 1 and incorporated in the cap 1.

Next, the operation will be described. FIG. 3 shows that the cap 1 is attached to the shaft cylinder main body 2 in the narrow direction of the cap opening 1c.
FIG. In FIG. 3, when the cap 1 is fitted into the rear end of the barrel main body 2, the concave portion 1b formed inside the cap 1 becomes an outer peripheral surface on the rear end side of the barrel main body 2. Fit to correspond.
FIG. 4 shows the cap 1c in the width direction of the cap opening 1c.
Shows a state fitted to the barrel main body 2.
As shown in FIG. 4, the tip of the convex receiving portion 1 a is formed by a ridge line having substantially the same shape as the outer peripheral shape in the axial direction on the rear end side of the barrel body, and the outer surface on the rear end side of the barrel body 2. Contact to hold down. Then, as shown in FIG. 5 (FIG. 5 is an arrow view cut along the line II-II in FIG. 3), when the cap 1 is further pushed in, the convex receiving portion made of synthetic resin becomes somewhat elastic. It deforms and comes into close contact with the outer peripheral surface on the rear end side. Therefore, the cap 1 completely holds and fits the outer peripheral surface on the rear end side of the barrel body 2 by the concave portion 1b and the convex receiving portion 1a formed inside the cap 1.

Next, a cap for an applicator according to the present invention will be described with reference to FIGS. In the embodiment of the present invention, the material of the cap is formed of a hard resin, a bead portion is formed in a concave portion of the cap, and a groove portion is formed on an outer peripheral surface on a rear end side of the barrel body. The part and the groove part are fitted and fitted to each other and held, and even if the outer peripheral surface on the rear end side of the barrel body and the shape of the cap opening are not similar to each other, it is devised so as to prevent the lateral run-out of the cap and play. Things.

Second Embodiment In the second embodiment, as shown in the first embodiment, the shape of the barrel body 2 is such that the cross section of the mounting portion with the neck 7 is elliptical. The outer shape of the barrel body 2 in the axial direction is a parabola, and gradually becomes a shell shape toward the closing portion.

FIG. 6 is a perspective view of the cap 1. As for the shape of the cap 1, the cap opening 1 c has the same elliptical shape as the barrel body 2, and the outer peripheral shape toward the closed portion of the cap 1 has a streamlined shape. The cap 1 is made of a hard PET resin, and a resin clip 3 is formed on the cap 1. In FIG. 6, the inside of the cap 1 is provided with the main body 2 formed integrally with the cap 1.
A concave portion 1b having substantially the same shape as the outer peripheral surface on the rear end side, and a convex receiving portion 1a for holding the rear end side of the barrel main body 2 are each provided with an inner surface in the narrow direction of the cap opening 1c and the cap. Two locations are provided on the inner surface of the mouth 1c in the width direction so as to be symmetrical with respect to the center axis of the cap 1, and a bead portion 8 is provided in the concave portion 1b.
Is formed. In addition, the convex receiving portion 1a may be formed separately from the cap 1 and incorporated in the cap 1.

FIG. 7 shows a state in which the cap 1 is fitted to the rear end side of the barrel body 2 in the narrow direction of the cap opening 1c. In FIG. 7, reference numeral 8 denotes a bead provided in the recess 1b inside the cap 1. Reference numeral 9 denotes a groove formed on the outer peripheral surface on the rear end side of the barrel body so as to correspond to the bead portion of the cap 1.

When the cap 1 is actually inserted into the rear end of the barrel 2, the recessed portion 1 b formed inside the cap 1 is located at the rear end of the barrel 2. When the cap is pushed in further with a concave surface corresponding to the outer peripheral surface, and the cap is further pushed in, the convex receiving portion comes into contact with the outer peripheral surface on the rear end side of the barrel main body 2, and the cap 1 The bead portion 8 formed in the concave portion and the groove portion 9 formed on the outer peripheral surface on the rear end side of the barrel body 2 are fitted and fitted to each other,
Will be retained.

[0025]

According to the present invention, the structure is simple as described above, the structure is simple, no high-precision manufacturing is required, and the manufacturing cost is low. Also, when the cap is fitted on the rear end side of the barrel body, the concave portion and the convex receiving portion inside the cap engage with the outer peripheral surface on the rear end side of the barrel body to prevent lateral vibration and play. , The fitting can be ensured. For this reason, there is no restriction that the shape of the cap must be similar to the shape of the barrel body, and the design of the entire applicator can be made free.

[Brief description of the drawings]

FIG. 1 shows a state in which a cap according to a first embodiment of the present invention is fitted to a rear end side of a barrel body.

FIG. 2 is a perspective view of a cap according to the first embodiment of the present invention.

FIG. 3 is an operation explanatory view showing a state in which the cap according to the first embodiment of the present invention is fitted to the rear end side of the barrel body.

FIG. 4 is an operation explanatory view showing a state in which the cap according to the first embodiment of the present invention is fitted to the rear end side of the barrel body.

FIG. 5 is a sectional view taken along line II-II of FIG. 3;

FIG. 6 is a perspective view of a cap according to a second embodiment of the present invention.

FIG. 7 is an operation explanatory view showing a state in which the cap according to the second embodiment of the present invention is fitted to the rear end side of the barrel body.

FIG. 8 is an operation explanatory view showing a state in which a cap is fitted to a rear end side of a barrel body according to a conventional example.

FIG. 9 is a sectional view taken along line II of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap 1a Convex receiving part 1b Depressed part 1c Cap opening 2 Shaft barrel main body 2a cylindrical part 3 Clip 4 Chip 5 Coating body 6 Coating device 7 Neck 8 Bead part 9 Groove part

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B43K 23/08 B43K 23/12 A45D 34/04 B05C 17/00 B43L 19/00 B43M 11/00-11 / 08

Claims (5)

(57) [Claims] Claims: 1. An applicator and writing instrument containing a low-viscosity, medium-viscosity, or high-viscosity liquid therein, which is detachably attached to a tip end of an applicator of a barrel body or a writing instrument. A cap, wherein a concave portion having substantially the same shape as the outer peripheral surface on the rear end side of the barrel body is provided inside the cap, and a convex support for holding the outer peripheral surface on the rear end side of the barrel body. When the cap is attached to the rear end side of the barrel main body, the recessed portion and the convex receiving portion engage with the outer peripheral surface of the rear end side of the barrel main body to be fitted. A cap for a coating tool and a writing tool, characterized in that: 2. The applicator according to claim 1, wherein at least two concave portions provided inside the cap are formed so as to be symmetric with respect to a center axis of the barrel body. And writing instrument cap. 3. The projection receiving portion provided inside the cap is integral with or separate from the cap main body so that at least two projections are symmetrical with respect to the center axis of the barrel main body.
Claim 1, wherein at least one is formed or arranged.
Or the cap of the applicator and the writing implement according to 2. 4. A groove or a bead is formed in the recess provided inside the cap, and the groove formed in the recess is formed on an outer peripheral surface on a rear end side of the barrel body. ,
Or a bead portion or a groove portion corresponding to the bead is formed, and when the cap is attached to the rear end side of the barrel body, they are fitted and fitted to each other. Or the cap of the applicator and the writing implement according to 3. 5. A front end of the convex receiving portion provided inside the cap is formed by a ridge line having substantially the same shape as an outer peripheral shape in the axial direction on a rear end side of the barrel main body. A cap for the applicator and the writing implement according to claim 1.