JPS5848151Y2 - brush pen - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brush pen configured to supply ink stored in a pen shaft to a brush provided at the tip of the shaft.

Conventionally, this type of brush pen has been used in various ways, but in particular, when the brush tip is brush-like and ink with large particle diameters such as India ink and cosmetic pigments is used, it is difficult to Due to the capillary phenomenon, it is not possible to supply enough ink, and the ink supply amount is insufficient, resulting in problems such as blurred line drawings and clogging.

In view of the above-mentioned drawbacks, the present invention aims to eliminate this problem by supplying ink to the brush tip from the circumferential side, and this supplying action causes the brush tip to move forward and backward from the shaft end. The object of the present invention is to provide a brush pen that can forcefully extrude a fixed amount of ink when operated, and to provide a brush pen that is comfortable to use and can be used as a cosmetic or stationery item.

Now, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front sectional view of the brush tip in a state where the cap is fitted, and FIG. 3 is an enlarged sectional view showing the tip of the brush in use.

In the annular recess 1a provided around the inner periphery of the tip of the cylindrical body 1, an annular gasket 4 fixed at the end is engaged with a circumferential groove 3a provided around the outer periphery of the end of the rear step 3 of the joint tube 2. After the edge 4a is covered and airtightly inserted between the cylinder 1b of the main body 1, the protrusion 3b provided around the rear step portion 3 is fitted and integrated.

A contact edge 5a is provided around the inner periphery of the end of the front step portion 5 of the joint tube 2, and an outer tube 7 of a cap 6 having a bottomed cylindrical shape is removably fitted onto the outer step portion. It will look like it will match.

Reference numeral 8 denotes a middle cylinder whose inner end is press-fitted or glued into the middle of the joint cylinder 2, and a brush 9 made of a large number of natural or artificial hairs is attached to the narrow diameter part of the stepped part 8a provided at the tip. The brush support pipe 10 inserted and fixed into 10 a is press-fitted and fixed by caulking 1
0b and open.

The brush 9, the brush support pipe 10, and the middle tube 8 are inserted into a tapered tube 11 having an outer diameter with a small diameter at the tip.
In the tapered tube 11, a protrusion 8b protruding from the outer circumference of the middle tube 8 is screwed into a female thread 11a screwed onto the inner circumference of the tapered tube 11,
It slides in the range where it contacts the abutting edge 5a provided on the joint tube 2 and the abutting edge 11b provided on the outer periphery of the rear end of the tapered tube 11, so that the brush tip 9a moves in and out from the mouth end 11C. becomes.

A circumferential groove 8C is provided on the outer periphery of the middle part of the middle cylinder 8, and the circumferential groove 8C
The O-ring 12 fitted into the sliding hole 11 of the tapered cylinder 11
d and the brush support pipe 10
An O-ring 13, which is slidably and airtightly inserted into the sliding hole 11d, is locked between the locking ring 14 press-fitted into the inner end of the sliding hole 11d and the stepped portion 11f of the small diameter hole 11e.

The stepped portion 11f is provided with a radial cutout groove 11g as shown in FIG. 2, and when the OIJ ring 13 comes into contact with it, the small gap d1 between the brush support pipe 10 and the small diameter hole 116 and the sliding portion 7L11 are formed. Ink a fills the gap d2 between d at the mouth end 11C
A second check valve 15 is configured to allow flow in the direction.

Further, a through hole 8e that opens between the two 01J rings 12 and 13 is bored near the rear end of the continuous hole 8d that opens toward the inner cavity of the main body 1, which is bored in the middle cylinder 8, and the through hole 8e A cylindrical valve 16' made of an elastic material such as rubber is inserted in a pressure-fitting manner so as to cover the first check valve 16.

On the other hand, a piston 17 is installed in the cylinder 1b of the main body 1 in an airtight and slidable manner through an O-ring 18 fitted in a circumferential groove 17H. Locking plate 1 made of a thin elastic plate
The radial claw 19a of 9 is inserted into the wall of the cylinder 1b so as to lock it toward the rear, and the air hole 2 is inserted into the rear end of the main body 1.
A tail plug 20 having a hole 0a is press-fitted therein.

In addition, the cap 6 has a bottomed leveling tube 21 which is slidable on the outer tube 7 inserted therein, and a coil spring 22 is attached to the cap 6 so that the end of the leveling tube 21 is in contact with the tip of the front step 5 of the joint tube 2. The peripheral edge 2 of the leveling tube 21 is elastically biased in the direction of protrusion.
1b is press-fitted into the outer cylinder 7, and as shown in FIG. It is located outside the end of the cylinder 70.

Reference numeral 24 denotes a spongy humidifying material inserted into the bottom of the leveling tube 21, which is soaked with water and then hollowed out.

The brush pen having the above structure is produced by filling the space between the cylinder 1b and the piston 17 with ink a such as cosmetic pigment or black ink.

First, after being pulled out from the cap 6, when the tapered cylinder 11 is rotated, it moves forward or backward depending on the screw engagement between the female screw 11a and the protrusion 8b.

This rotation causes the brush tip 9a to protrude from the mouth end 11C, and when the tapered tube 11 is slid in the direction of the arrow hole in FIG. 3, the sliding space E expands and the first check valve is opened. 16 opens and the second check valve 15 closes, so the cylinder 1b
The ink a inside expands the valve 16 through the through hole 8e and enters the sliding space E.

In this state, when the tapered cylinder 11 is slid in the direction of arrow B in FIG. The ink a in the space E passes through the notch groove 11g and the gap d1 and is poured out from the mouth end 11C.

At this time, since the brush tip 9a protrudes from the mouthpiece 11C, the ink a that is poured out is applied from the tip to the root of the brush tip 9a. The amount of pouring can be obtained.

Furthermore, when the ink a in the cylinder 17 is poured out, the air pressure inside the piston 17 of the cylinder 1b is lower than the outside, so the piston 17 cannot slide on the cylinder 1b due to the atmospheric pressure entering through the air hole 20. It will be done.

Therefore, the ink a in the cylinder 17 does not come into contact with air and deteriorate in quality.

Further, when the brush tip 9a is stored in the tapered tube 11 after use, the ink a enters the sliding space E and waits for dispensing during the next use.

By inserting the outer cylinder 7 into the front step part 4 of the joint cylinder 2, the cap 6 allows the tip of the joint cylinder 2 and the leveling cylinder 21 to come into contact with each other, thereby airtightly housing the brush tip 9a and allowing the humidifying material 24 to It prevents dryness.

Furthermore, when the cap 6 is removed, the leveling tube 21 protrudes, and the brush tip 9a can be adjusted using the leveling end 21a, but since it protrudes from the end of the outer tube 70, the outer tube 7 gets dirty. Never.

Next, FIG. 5 shows another embodiment of the ink storage section, in which an air hole 20a' is provided at the rear end of the bottomed cylindrical outer cylinder 1', and the outer periphery of the rear step part 3 of the joint cylinder 2. A circumferential groove 3a provided around the
On the other hand, a bag body 25 made of soft rubber or synthetic resin is inserted between the engaging edge 25a at the mouth end in an airtight manner between the outer cylinder 1', and the other parts are constructed in the same manner as in the above embodiment. This is what I did.

Therefore, when the ink a in the bag 25 decreases with use, air (atmospheric pressure entering from L20a')
5 is hollowed so as to be compressed and deformed, and exhibits the same effect as the previous embodiment.

Further, in the embodiment described above, the tapered tube 11 was configured to slide due to the screwing action with the middle tube 8, but it is also possible to remove the female screw 11a and configure the tapered tube 11 to be slid directly with a fingertip. can.

As explained above, the brush pen of the present invention forcibly supplies a certain amount of ink around the tip of the brush by protruding the tip from the tapered tube. However, the ink can be applied reliably and the written characters will not be blurred, so the practical effects after implementation of this invention are extremely large.

[Brief explanation of drawings]

The drawings show one embodiment of the brush pen of the present invention. Figure 1 is a front cross-sectional view in a stored state, Figure 2 is a cross-sectional view taken along the line C-C in Figure 1, and Figure 3 is a main part in a used state. FIG. 4 is a front sectional view of the cap, and FIG. 5 is a front sectional view showing another embodiment of the ink storage section. 1 - main body, 2 - joint tube, 4 - packing, 6 - cap,
8 - middle tube, 9 - brush, 10 - brush support pipe, 11 - tapered tube, 12.13.18 - Osu/g, 14 - locking ring,
15.16 ~ check valve, 16' ~ valve, 17 ~ piston, 19 ~ locking plate, 20 ~ tail plug, 21 ~ leveling tube, 22 ~ coil spring, 23 ~ locking ring, 24 ~ humidifier, a
~ink.

Claims (5)

[Scope of utility model registration request] (1) A: an outer cylinder containing an ink accommodating portion whose volume decreases due to decompression; B: an outer cylinder that is closely fixed to the open end of the outer cylinder and has a communicating hole that communicates with the ink accommodating portion; a middle cylinder to which a brush body is fixed; C a first check valve that is provided in the middle cylinder and is capable of discharging ink only outwardly from a through hole that communicates with the continuous hole; a tapered tube that is movably inserted and that slides closely behind the first check valve and allows the writing body to protrude and retract from the end of the eye; and E. between the tapered tube and the middle tube; A brush pen comprising a second check valve that is internally disposed between the brush body and the first check valve, and is capable of discharging only toward the end of the tapered barrel. (2) The ink storage portion is separated from the piston 17 that is closely and slidably inserted into the outer cylinder and the locking plate 19 that is provided at the rear end of the piston 17 and is movable only forward. A brush pen as set forth in claim 1 of the utility model registration claim characterized by: (3) The ink accommodating portion is comprised of an elastic bag that is inserted into the outer cylinder and whose mouth end is kept airtight between the outer cylinder mouth end and the rear end of the middle cylinder 8. A brush pen according to claim 1 of the utility model registration claim. (4) The brush pen according to claim 1, wherein the first check valve 16 is made of an elastic material that covers a through hole 8e provided in the middle tube 8. (5) The second check valve 15 includes an O-ring that is slidably and closely fitted onto the outer periphery of the middle cylinder 8 and the tapered cylinder 1.
1 a step part provided on the inner wall and having a notch and with which the front end of the O-ring comes into contact; and a locking ring 23 which is closely fixed in the tapered cylinder 11 and with which the rear end of the O-ring comes into close contact. The first claim for utility model registration consisting of
The brush pen mentioned in the section.