JPH0437552Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This case relates to a brush for applying cosmetic liquid.

``Conventional technology'' As a conventional makeup liquid application brush, it was developed in the 1980s.
There is an idea described in No. 63571. The device is shaped like a brush pen, and the pump part is formed by a lower part of a fixed part with a brush tip fitted into the upper part of the brush shaft, and an operating part fitted into the brush shaft in a downwardly biased state. By moving the inner cylinder, whose upper part is connected to the lower part of the actuating part and hangs within the brush shaft, up and down with respect to the brush shaft, the liquid in the inner cylinder is sucked into the pump chamber and the pump The indoor liquid is supplied from the fixing part to the inside of the brush shaft that protrudes upward, and as the inner cylinder becomes negative pressure, the bottom plate fitted into the lower part of the inner cylinder rises to prevent the negative pressure from becoming negative. This is how it was set up.

``Problems to be solved by the invention'' In the conventional cosmetic liquid application brushes mentioned above, the stroke of the inner cylinder with respect to the brush shaft is fixed, which prevents over-dispensing of cosmetic liquid and There were cases where the discharge amount had to be repeated several times because the discharge amount was insufficient.

The idea is to change the stroke of the inner cylinder,
To enable operation with large strokes when a large amount of cosmetic liquid is required, and with small strokes when a small amount of cosmetic liquid is required.

"Means for Solving the Problem" The lower part of the fixing part 5 with the brush tip 4 fitted into the upper part of the brush shaft 1, and the actuating part 10 fitted into the brush shaft 1 in a downward biased state. By connecting the upper part to the lower part of the operating part 10 and moving the inner cylinder 17, which is suspended within the brush shaft 1, up and down with respect to the brush shaft 1, the liquid in the inner cylinder 17 is pumped. The liquid in the pump chamber is sucked up into the chamber 16 and is supplied into the brush tip 4 projecting upward from the fixing part 5, and the inner cylinder 1
The brush for applying cosmetic liquid is provided so that the bottom plate 18 fitted into the lower part of the inner cylinder rises due to negative pressure in the inner cylinder, and the brush has an eccentric cylinder hole 21 in the lower part of the inner cylinder below the bottom plate 18. At the same time, the short tube 19 is fitted, and the shaft tube 25 is fitted into the eccentric tube hole 21, and the push-up member 24 having an eccentric outward flange 26 at the lower end of the shaft tube is rotatably mounted. When in a predetermined position, it is possible to move the eccentric outward flange 26 into and out of the lower part of the writing shaft 1 by pushing up the inner cylinder through the push-up member and the short cylinder, and at the same time At the position where the push-up member 24 is turned by a predetermined angle from the position, the eccentric outward flange 2
A part of the outer periphery of the brush shaft 1 is engaged with a downward step provided at the lower end of the brush shaft 1, thereby making it possible to shorten the stroke of the inner cylinder 17 with respect to the brush shaft 1.

"Operation" When the eccentric outward flange 26 is pushed up with respect to the brush shaft 1 from the state shown in FIG. The inner cylinder 17 into which the short cylinder is fitted and the actuating part 10 connected to the upper part of the inner cylinder are connected to the spring 1.
4, the fixed part and the operating part are pushed up by the gap _h1 , and the pump chamber 16 formed by the working part 10 and each inner surface of the fixed part 5 fitted to the upper part of the pen shaft. The discharge valve 8 is pressurized and elastically closes.
is opened, and the cosmetic liquid in the inner cylinder 17 is discharged through the liquid flow path 7 from the valve chamber 8a of the discharge valve to the middle part of the brush tip 4, thereby wetting the brush tip 4. Furthermore, when the outward flange 26 of the damaged heart is released, the operating section, inner cylinder, short cylinder, and push-up member are lowered by the restoring force of the spring 14, and the pressure inside the pump chamber becomes negative due to the discharge valve being blocked. Therefore, suction valve 1
1 opens, the cosmetic liquid in the inner cylinder 17 is sucked in, and the bottom plate 18 fitted to the bottom of the inner cylinder rises due to the negative pressure inside the inner cylinder.

A fixed part 5, an operating part 10, and an inner cylinder 1 are attached to the brush shaft 1.
7. Although the short tube 19 is not rotatable, the push-up member 24 is rotatable relative to the short tube 19, and the push-up member 24 is rotated relative to the short tube 19 from the state shown in FIGS. 3A and 3B. When the eccentric outward flange 26 is rotated by 90 degrees, as shown in FIGS. 4A and 4B, the outer circumference of the eccentric outward flange 2 is attached to the first downward step 2 formed by providing a recess on the inner surface of the lower end of the cylindrical shaft 1. moves to a position where a part of the can be engaged, and the stroke at this time is
_h2 . When the eccentric outward flange is turned further by 90 degrees, as shown in FIGS. 5A and 5B, a part of the outer periphery of the eccentric outward flange moves to a position where it can engage with the second downward step 3 formed by the lower end surface of the pen shaft. becomes h ₃ .

In this way, by rotating the push-up member 24 with respect to the short cylinder 19, the stroke of the push-up member 24, and thus the inner cylinder 17, can be freely changed.

``Example'' 1 is a cylindrical brush shaft with openings at both upper and lower ends, and a recessed portion is provided on the inner periphery of the lower end of the brush shaft to form a first downward stepped portion 2.
In addition, second downward step portions 3 are formed by the lower end surfaces of the brush shafts. A fixing part 5 with a brush tip 4 is fitted into the upper part of the brush shaft. The fixed portion has a liquid flow path 7 formed from a cylindrical piston 6 hanging downward to an intermediate portion within the brush tip 4 projecting upward, and has a discharge valve 8 in the middle of the flow path. The brush tip 4 is detachably attached to the cylindrical portion of the fixed portion as a replacement member 9 with a brush tip.

An operating section 10 is fitted into the pen shaft 1 below the fixed section 5 so as to be biased downward and movable up and down. The operating part forms a pump part together with the lower part of the fixed part, and has a cylinder 12 having a suction valve 11 at the lower end, and a large diameter cylindrical part 13 is raised upward from the upper end of the cylinder. The cylindrical portion 5a of the fixing portion
The engaging elements 13a attached to the outer surface of the large-diameter cylindrical part are slidably fitted into the plurality of elongated holes 5b that are vertically installed in the cylindrical part, and the engaging elements 13a are fitted in a vertically movable manner. It is urged downward by a coil spring 14 provided between the part 10 and the part 10. The cylindrical piston 6
is slidably fitted into the cylinder 12.

Reference numeral 15 denotes an insertion member inserted into the pump chamber 16 in order to increase the compression ratio of the pump, and the lower end of this member is a ball valve 1 which is a suction valve body fixed in the lower part of the cylinder.
This prevents 1a from being pulled out. In the illustrated example, the actuating portion is provided with a cylinder, and the fixed portion is provided with a cylindrical piston, but these may be provided in reverse.

An upper part of an inner cylinder 17 is fitted into the lower end of the operating part 10, and a bottom plate 18 is slidably inserted into the lower part of the inner cylinder.
is fitted. Cosmetic liquid can be filled into the inner cylinder.

A short cylinder 19 is fitted into the lower part of the inner cylinder below the bottom plate 18. The short tube has an outward flange 20 having the same outer diameter as the inner tube outer diameter, and the upper surface of the flange is brought into contact with the lower end surface of the inner tube. The cylindrical hole 21 of the short tube is eccentric, and as shown in FIG. 2, a recess 22 is provided at the half circumference of the lower end of the cylindrical hole, and the recess 22 is engaged with both ends of the recess with a gap between them. Coupling protrusions 23, 23 are attached.

The shaft cylinder 2 of the push-up member 24 is inserted into the cylinder hole of the short cylinder.
5 are rotatably fitted. The push-up member has an eccentric outward flange 26 having the same outer diameter as the outer diameter of the outward flange 20 and the inner cylinder 17 at the lower end of the shaft cylinder.
, the short tube 19 is made eccentric by the same distance as the eccentric tube hole 21, and at a predetermined position, the first
As shown in the figure, the center of the eccentric outward flange 26 is located at the 0 ₁ position on the extension of the common central axis y ₁ of the brush shaft 1, the inner cylinder 17, the short cylinder 19, etc. 20 and an eccentric outward flange 26
It is installed so that it is flush with the outer surface of the. A second engagement protrusion 25a is attached to the lower outer surface of the shaft cylinder 25, which rotates within the aforementioned recess 22 and positions the push-up member relative to the short cylinder 19.

When the push-up member ₂₄ is pushed up against the brush shaft 1 from the state shown in FIG. 1 and FIG. Therefore, the gap h ₁ becomes the stroke of the inner cylinder 17.

When the push-up member 24 is rotated 90° relative to the short tube 19 from the above position, the member rotates around the central axis _Y2 of the eccentric tube hole 21.
As shown in Fig. 4A and B, the eccentric outward flange 2
6 moves to the ₀₂ point, and when pushed up at this position, a part of the outer circumference of the eccentric outward flange 26 engages with the first downward step 2, and the stroke at this position is h It becomes ₂ .

When the eccentric outward flange 26 is rotated further by ₉₀ degrees as shown in FIGS. It engages with the second downward step 3 at the lower end of the brush shaft, and the stroke at this position becomes _h3 .

In the above embodiment, the downward step portion is formed in double portions, but it may be formed in only one portion.

"Effect of the invention" As mentioned above, the present invention has the inner cylinder 17 relative to the brush shaft 1.
Since the stroke of the makeup liquid can be changed freely, the amount of makeup liquid discharged to the brush tip 4 can be changed freely, and thus the liquid can be applied quickly and waste can be reduced. I can do it. The above-mentioned stroke adjustment can be done extremely easily and quickly since it is only necessary to turn the push-up member 24 with respect to the brush shaft 1.

[Brief explanation of drawings]

Figure 1 is a vertical sectional view of the proposed brush, Figure 2 is an exploded perspective view of the short tube and push-up member used in the brush, and Figure 3 is an exploded perspective view of the short tube and push-up member used in the brush.
Figures 5 to 5 show the state in which the stroke of the inner cylinder changes due to the rotation of the push-up member relative to the short cylinder. Figure 3A shows the center of the eccentric outward flange on the central axis of the brush shaft and the inner cylinder. Fig. 4A is an enlarged vertical cross-sectional view of the main part in the state where is located, Fig. 4A is a bottom view of the main part, and Fig. 4A is an enlarged longitudinal sectional view of the main part in the state where the
An enlarged vertical sectional view of the main part when rotated and viewed along the line A-A in the same figure in the direction of the arrow, Figure B is a bottom view of Figure 4A, and Figure 5A is a further 90 degrees ° An enlarged vertical cross-sectional view of the main part with the push-up member rotated,
Figure B is its bottom view. 1... Pen shaft, 5... Fixed part, 10... Operating part,
19...Short tube, 24...Pushing member.

Claims (1)

[Scope of utility model registration request] The lower part of the fixing part 5 with the brush tip 4 fitted into the upper part of the brush shaft 1 and the operating part 10 fitted into the brush shaft 1 in a downwardly biased state form a pump part. By moving the inner cylinder 17, whose upper part is connected to the lower part of the brush 10 and is suspended within the brush shaft 1, up and down with respect to the brush shaft 1, the liquid in the inner cylinder 17 is sucked into the pump chamber 16, and the pump The indoor liquid is supplied from the fixing part 5 into the brush tip 4 projecting upward, and the inner cylinder 1
The brush for applying cosmetic liquid is provided so that the bottom plate 18 fitted into the lower part of the inner cylinder rises due to negative pressure in the inner cylinder, and the brush has an eccentric cylinder hole 21 in the lower part of the inner cylinder below the bottom plate 18. At the same time, the short tube 19 is fitted, and the shaft tube 25 is fitted into the eccentric tube hole 21, and the push-up member 24 having an eccentric outward flange 26 at the lower end of the shaft tube is rotatably mounted. When it is at a predetermined position, it is possible to move the eccentric outward flange 26 into and out of the lower part of the writing shaft 1 by pushing up the inner cylinder through the push-up member and the short cylinder, and also to move the eccentric outward flange 26 into and out of the lower part of the brush shaft 1. At the position where the push-up member 24 is turned by a predetermined angle from the position, the eccentric outward flange 2
A part of the outer periphery of the brush holder 6 engages with a downward step provided at the lower end of the brush shaft 1, thereby making it possible to shorten the stroke of the inner cylinder 17 relative to the brush shaft 1. Brush for applying makeup liquid.