JP7144860B2 - Side knock type brush pen - Google Patents

Description

TECHNICAL FIELD The present invention relates to a side-knock type brush pen, and more particularly, to a side-knock type brush pen that is a valve type brush pen that supplies ink to the brush tip by pressing the shaft.

A typical brush pen is of a type in which ink is stored in a shaft made of a flexible material, and the shaft is pushed during use to supply ink to the tip of the brush. In the case of this type, if pressure is applied to the shaft carelessly during storage, etc., excessive ink will be pushed out to the tip of the brush, and excess ink will accumulate in the cap, causing the inconvenience of spilling out when the cap is removed. .

Also, when stirring is performed with the cap closed, excessive ink is supplied to the brush tip due to the vibration of the stirring rod inside the shaft, causing the problem that surplus ink accumulates in the cap. A similar problem arises due to pressure changes within. Therefore, it is conceivable to adopt a valve mechanism to adjust the amount of ink supplied to the brush tip. Can not.

JP-A-2008-6668 JP 2008-87422 A

As mentioned above, in the case of a conventional brush pen, when pressure is applied to the shaft carelessly during storage, when the shaft is stirred, or when pressure changes occur in the shaft due to temperature changes, etc. In addition, there is the inconvenience that the ink that is excessively supplied to the tip of the brush accumulates in the cap and spills out when the cap is removed. In order to solve this problem, it is conceivable to adopt a valve mechanism, but since the tip of a brush pen is a soft brush, there is a problem that a valve mechanism that opens the valve by pressing cannot be adopted. rice field.

Therefore, the present invention adopts a valve mechanism for adjusting the amount of ink supplied, and makes it possible to open and close the valve without pressing the pen tip. There is no risk of oversupply of ink to the brush tip and surplus ink will not accumulate in the cap, so it is always clean. An object of the present invention is to provide a side-knock type brush pen that can be used in a state.

The invention according to claim 1 for solving the above-mentioned problems is to provide a shaft cylinder to which an ink cartridge is connected, a brush tip that is a writing brush, and a brush positioned between the shaft cylinder and the brush tip and fixed to the shaft cylinder. and a joint axis that is
The joint shaft consists of an upper portion, an intermediate portion, and a lower portion, and the upper portion holds the brush tip, and the lower portion fixed to the shaft cylinder incorporates a valve unit that supplies an appropriate amount of ink to the brush tip, The intermediate portion is a thinned knock portion that can be pushed in, and a push joint is provided in the knock portion for moving the valve body of the valve unit back and forth in accordance with the pushing operation with a fingertip ,
A side knock, wherein the push joint comprises an upper tubular portion, a lower tubular portion, and a bending member arranged in a two-pair cross shape connecting the upper tubular portion and the lower tubular portion. It is a stencil pen.

In one embodiment, the bending member has thin portions at the upper tubular portion connecting portion, the intermediate portion, and the lower tubular portion connecting portion, and can be bent from the thin portions.

In one embodiment, a pressing portion indication is attached to a portion of the knock portion corresponding to the position of the bending member, or the knock portion is made of a see-through material.

In one embodiment, an ink occluding core extending from the tip of the brush is inserted into the upper cylindrical portion, the end of the ink occluding core can enter into the space of the lower cylindrical portion, and a valve body of the valve unit is provided. is fitted and fixed to the lower tubular portion from below.

The direct liquid type brush pen according to the present invention is as described above, and employs a valve mechanism for adjusting the amount of ink supplied. Since it is possible to open and close the valve by knocking, the tip of the brush will not move when pressure is applied to the shaft during storage, when stirring, or when pressure changes occur in the shaft due to temperature changes. Since there is no fear that ink will be excessively supplied to the cap and surplus ink will not accumulate in the cap, there is an effect that the cap can always be used in a clean state.

1 is a front view of a main part of a side-knock type brush pen according to the present invention; FIG. 1 is a vertical cross-sectional view of a main part of a side-knock type brush pen according to the present invention (when not knocked); FIG. 1 is a vertical cross-sectional view of a main part of a side-knock type brush pen according to the present invention (at the time of knocking); FIG. FIG. 4A is a plan view and a front view showing an extended state of a push joint in the side-knock type brush pen according to the present invention; 5 is a cross-sectional view taken along line AA and line BB in FIG. 4; FIG. FIG. 4 is a front view showing a contracted state of the push joint in the side-knock type brush pen according to the present invention;

Modes for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the following description, according to the illustrated example, the brush tip side is expressed as the upper side (upper side), and the opposite side is expressed as the lower side (lower side). The side-knock type brush pen according to the present invention is roughly classified into a barrel 1 connecting an ink cartridge storing ink (ink), a brush tip 41, and a brush located between the barrel 1 and the brush tip 41. and a joint shaft 11 fixed to the shaft cylinder 1. Although not shown, the brush tip 41 is covered with a protective cap.

The joint shaft 11 consists of an upper portion 12 , an intermediate portion and a lower portion 14 , the upper portion 12 holds the tip 41 of the brush, and the lower portion 14 is fixed to the barrel 1 . A valve unit 21 for supplying an appropriate amount of ink to the brush tip 41 is incorporated in the lower portion 14 (see FIGS. 2 and 3).

The valve unit 21 includes a cylindrical valve case 22 fitted in the lower portion 14 of the joint shaft 11, an end cap 23 closing the bottom of the valve case 22, and a return spring 24 mounted on the upper side of the end cap 23. and a valve 25 biased by a return spring 24 to close an opening 22a on the upper surface of the valve case 22. As shown in FIG. The end cap 23 is provided with a support cylinder 26 that supports the lower portion of the return spring 24 and slidably receives the lower portion of the valve body 25 . A hole 27 is formed.

An intermediate portion of the joint shaft 11 is formed as a knock portion 13 which is thin and can be pushed with a fingertip. A joint 31 is provided internally. The push joint 31 comprises an upper tubular portion 32 , a lower tubular portion 33 , and at least a pair of bending members 34 connecting the upper tubular portion 32 and the lower tubular portion 33 . In a preferred embodiment, the folding members 34 are arranged in a two-pair cross shape (see FIG. 5(A) in particular).

The folding member 34 has a thin portion connecting the upper tubular portion 32 and the lower tubular portion 33 and an intermediate portion, and is bendable at the thin portion 35 (see FIGS. 4 to 6). The upper tubular portion 32 is fitted into a recessed portion 16 formed in the partition wall 15 between the upper portion 12 of the joint shaft 11 and the knock portion 13 . The ink occluding core 42 of the brush tip 41 extends through the concave portion 16 and the upper cylindrical portion 32 , and the end thereof faces the space 36 of the lower cylindrical portion 33 . Further, the head portion 25a of the valve body 25 of the valve unit 21 is fitted and fixed to the lower portion of the lower tubular portion 33 .

In the case of the side-knock type brush pen according to the present invention having the above configuration, in FIGS. is closed, the ink supplied from the ink cartridge and filling the inside of the valve case 22 through the ink flow hole 27 from the shaft cylinder 1 does not flow out into the knock portion 13 . In this state, the ink existing in the knock portion 13 permeates the brush tip 41 through the ink absorbing core 42 .

In this valve closed state, the push-up force of the return spring 24 also acts on the push joint 31 via the valve body 25, so the push joint 31 is in a contracted state. That is, each bending member 34 that receives the pushing force of the return spring 24 bends from the thin portion 35 to form a dogleg shape (see FIGS. 1 and 2).

When the ink impregnation amount of the brush tip 41 is reduced and the written characters are blurred, the knock portion 13 is pressed with a fingertip. By performing this pressing operation against the push-up force of the return spring 24, the bending member 34 that has been bent in a doglegged shape is slightly extended (see FIG. 3), but the push joint 31 is Since the upper tubular portion 32 is fitted and fixed in the concave portion 16, the lower tubular portion 33 moves downward. As a result of the movement of the valve body 25 downward, the upper opening 22a of the valve case 22 is opened, and the ink accumulated in the valve case 22 flows into the knock portion 13 and flows between the bent members 34. It passes through and sufficiently permeates the ink storage core 42 .

When the pressing operation is stopped thereafter, the return spring 24 immediately closes the top opening 22a of the valve case 22 to stop the ink supply, so that the brush tip 41 is not oversupplied with ink.

In addition, in order to ensure that the pressing operation can be performed, a pressing portion indication is attached to a portion of the knocking portion 13 corresponding to the position of the bending member 34, or the knocking portion 13 is made of a see-through material. You may

The side-knock type brush pen according to the present invention is as described above, and a valve mechanism is adopted for adjusting the amount of ink supply. Since it is possible to open and close the valve by knocking, the tip of the brush will not move when pressure is applied to the shaft during storage, when stirring, or when pressure changes occur in the shaft due to temperature changes. Since there is no risk of oversupply of ink to the cap, and surplus ink does not accumulate in the cap, it has the effect of being able to be used in a clean state at all times, and its industrial applicability is great. .

1 shaft tube 11 joint shaft 12 upper portion 13 knock portion 14 lower portion 15 partition plate 16 concave portion 21 valve unit 22 valve case 23 end cap 24 return spring 25 valve body 26 support cylinder 27 ink flow hole 31 push joint 32 upper cylinder portion 33 Lower cylindrical portion 34 Folding member 35 Thin portion 41 Brush tip 42 Ink storage core

Claims (5)

A shaft tube to which an ink cartridge is connected, a brush tip, and a joint shaft positioned between the shaft tube and the brush tip and fixed to the shaft tube,
The joint shaft consists of an upper portion, an intermediate portion, and a lower portion, and the upper portion holds the brush tip, and the lower portion fixed to the shaft cylinder incorporates a valve unit that supplies an appropriate amount of ink to the brush tip, The intermediate portion is a thinned knock portion that can be pushed in, and a push joint is provided in the knock portion for moving the valve body of the valve unit back and forth in accordance with the pushing operation with a fingertip ,
A side knock, wherein the push joint comprises an upper tubular portion, a lower tubular portion, and a bending member arranged in a two-pair cross shape connecting the upper tubular portion and the lower tubular portion. stencil pen. 2. The side-knock type brush pen according to claim 1, wherein said bending member has thin portions at said upper cylindrical portion connecting portion, intermediate portion and said lower cylindrical portion connecting portion, and can be bent from said thin portions. 3. The side-knock type brush pen according to claim 1 or 2, wherein a pressing portion indication is attached to a portion of said knock portion corresponding to an existing position of said bending member. 3. The side-knock type brush pen according to claim 1, wherein said knock part is made of a see-through material. An ink occluding core extending from the tip of the brush is inserted into the upper cylindrical portion, the end of the ink occluding core can be inserted into the space of the lower cylindrical portion, and the head portion of the valve body of the valve unit is inserted from below. The side-knock type brush pen according to any one of claims 1 to 4, which is fixed by being fitted into said lower cylindrical portion.

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