JPH0538668Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to an application container suitable for use in containing liquid cosmetics such as liquid lipstick, liquid eyeliner, nail polish, and the like.

2. Description of the Related Art Conventionally, coating containers for nail polish and the like are known to have a structure in which an applicator such as a brush is simply fixed or slidably attached to a container body that stores a liquid therein. In this conventional application container, an air supply path such as a pore for supplying air is provided in the container body, and the liquid is configured to be delivered to the tip of the brush by the amount of air supplied.

``Problems that the invention aims to solve'' With the conventional application containers as described above, liquid leaks from the air supply path for replenishing air into the container body, and liquid inside the container body If the liquid contains volatile components and has a high solid content, there is a problem in that the air supply path becomes clogged and air cannot be replenished, making it impossible to supply the liquid to the tip of the brush.

This invention was made in view of the above circumstances, and its purpose is to provide a coating container that can easily supply a fixed amount of liquid to the tip of the brush without supplying air into the container body.

"Means for Solving the Problems" The coating container of this invention is filled with liquid, has a first check valve at one end that opens toward the liquid outlet, and has a stopper airtightly slid on the other end. A movably provided inner container, a cylinder member whose one side abuts a part of the outer surface of the first check valve, and the inner container is removably attached to the one side, and a part of the cylinder member. a holder that is slidably fitted; a biasing member that is interposed between the holder and the cylinder member and biases the cylinder member toward the inner container; A cylindrical piston that is slidably inserted, and a piston that is disposed in an inner hole of the piston and opens by pressure generated by sliding between the cylinder member and the piston when the inner container is pushed into the holder. The present invention is characterized in that it includes a second check valve and an applicator fixed to the holder and fitted into the inner hole of the piston.

"Operation" In the above configuration, when the inner container is pushed into the holder, the piston is fitted into the cylinder member. At this time, since the first check valve remains closed, the pressure of the liquid between the cylinder member and the piston (pressure in the inner hole of the piston) increases. This increase in pressure within the piston inner hole opens the second check valve, and the liquid within the piston inner hole is supplied to the applicator. When the pushing operation of the inner container into the holder is stopped, the cylinder member and the inner container automatically return to their home positions by the biasing member. At this time, the second check valve remains closed, creating negative pressure between the cylinder member and the piston. As a result, the first check valve opens and the liquid in the inner container is sucked between the cylinder member and the piston. In this case, the airtight plug of the inner container slides into the inner container by an amount corresponding to the decrease in the liquid in the inner container, thereby keeping the internal pressure of the inner container constant. Further, the inner container is provided as a cartridge body, and when the liquid inside the inner container runs out, it can be replaced with a new inner container.

"Embodiment" FIGS. 1 to 5 are diagrams showing an embodiment of this invention. In FIG. 1, reference numeral 1 indicates a coating container. The coating container 1 includes an inner container 3 slidably fitted into a cylindrical outer cover 2, a cylinder member 4, and a holder 5 screwed onto the outer cover 2.
, a spring 6 interposed between the holder 5 and the cylinder member 4, a piston body 7 fitted into the cylinder member 4, an applicator 8 fixed to the holder 7, and a part of the holder 5 covered with the spring 6; It is composed of an upper cover 9 and a cap 10 that is detachably fixed to the holder 5. Inner container 3
has a bottomed cylindrical shape formed at the bottom by a lid body 12 having an air flow passage 11 at the bottom, and a liquid outlet 13 whose inner diameter is smaller than other parts is formed at the tip side. has been done. This liquid outlet 13
A check valve 14 is fixed on the outer side of. The interior of the inner container 3 is filled with a liquid L such as nail polish, and a piston-shaped stopper 15 is fitted in an airtight and slidable manner. This stopper 15 is movable within the inner container 3 so that the pressure of the liquid L in the inner container 3 and the atmospheric pressure are always in equilibrium, and the liquid L is isolated from the atmosphere. There is. As shown in FIG. 2, the inner container 3 is provided as a cartridge body 17 with a cap 16 screwed onto the distal end thereof, a part of which is sealed by pushing the check valve 14, and the cap can be removed when necessary. 16 is removed and inserted into the outer cover 2. The check valve 14, as shown in FIG.
When the pressure becomes higher than the pressure on the outside side, the inner side of the notch 18 of the check valve 14 opens, and the liquid L in the inner container 3 is discharged to the outside.

A rear end portion of a cylindrical cylinder member 4 is fitted into the distal end side of the inner container 3, and the rear end is connected to the check valve 1.
It is in a state of being in contact with the outside of the notch 18 of No. 4. A locking protrusion 19 as shown in FIG. 5 is formed on the outer periphery of the cylinder member 4 at approximately the center of the cylinder member.
A flange 20 is formed to protrude from the rear end side of the flange 9 . The rear surface of this flange 20 abuts the tip of the inner container 3, and the front end surface of the flange portion 20 is
A spring 6 comes into contact with it. The distal end side of the cylinder member 4 is fitted into the lower part of a holder 5 screwed onto the distal end portion of the outer cover 2.

The holder 5 has a cylindrical shape with a reduced diameter at the front, and from the rear end to approximately the center of the holder 5 is a sliding space 21 having an inner diameter such that the cylinder member 4 can slide therein. is formed. As shown in FIG. 3, a rectangular hole 22 is formed on the rear end side of the holder 5 from the center.
When the cylinder member 4 is inserted from the rear end, the locking protrusion 19 of the cylinder member 4 engages with this hole 22, and prevents the cylinder member 4 from being pulled out from inside the holder 5. A spring 6 is interposed between the rear end of the holder 5 and the flange 20 of the cylinder member 4, and urges the cylinder member 5 in a direction away from the holder 5.

A cylindrical piston body 7 is slidably fitted into the inner hole of the cylinder member 4, and its tip is fixed to the tip of the holder 5. The piston body 7 includes a cylindrical piston 23, a second check valve 24 disposed inside the piston 23, and a valve retainer 25 fitted into the piston 23. A convex portion 26 that protrudes radially inward is formed near the rear end of the piston 23 . A second check valve 24 is fixed to the side surface of the tip of the convex portion 26 . The second check valve 24 has a disc shape, and a part of the valve holder 25 is in contact with the side surface of the distal end thereof, as shown in FIG. Opening and closing operations are performed between 25 and the convex portion 26. The second check valve 24 and the inner container 3
When the piston body 7 slides within the cylinder member 4, the space between it and the first check valve 14 fixed to the cylinder member 4 becomes a compressed negative pressure space 27 that is pressurized or generates negative pressure. ing. The valve holder 25 has a cylindrical shape, and its inner hole forms a flow path 28 through which the liquid L flows. A pipe 29 of the applicator 8 is fitted into the tip of the valve holder 25. The applicator 8 has a brush 30 fixed to the top of a pipe 29, and the liquid L sent into the pipe 29 is supplied to the tip of the brush 30.

An upper cover 9 is fixed to the outer periphery of the front part of the holder 5, and the tip of the piston body 7 and the applicator 8 are sandwiched between the upper cover 9 and the tip of the holder, and these are fixed to the holder 5. I'm starting to do that. A bottomed cylindrical cap 10 that is detachably fixed to the holder 5 is placed over the portion exposed from the lower cover 2, including the applicator 8.

The method of using the coating container 1 configured as described above is as follows. Remove the cap 10 of the application container 1, and push the rear end of the inner container 3 exposed from the rear end of the lower cover 2 forward. The cylinder member 4 slides forward within the sliding space 21 of the holder 5. The piston body 7 is fitted into the cylinder member 4. At this time, since the first check valve 14 remains closed, the pressure in the compressed negative pressure space 27 between the cylinder member 4 and the piston body 7 increases. Due to this increase in pressure, the second check valve 24 opens, causing the liquid L in the compressed negative pressure space 27 to open.
is supplied to the application body 8 through the channel 28.

When the pushing operation of the inner container 3 is stopped, the cylinder member 4 and the inner container 3 are automatically returned to the home position by the spring 6. At this time, the second check valve 2
4 remains closed, a negative pressure is generated in the compressed negative pressure space 27. As a result, the first check valve 14 opens,
The liquid L in the inner container 3 is sucked into the compressed negative pressure space 27. In this case, the stopper 15 in the inner container 3 slides into the inner container 3 by the amount of decrease in the liquid L in the inner container 3, thereby making the internal pressure in the inner container 3 constant.

The above-mentioned application container 1 does not require an air supply path in the container, so there is no problem such as liquid clogging, and the application body 8 at the tip can be applied by simply pushing the rear end of the inner container 3. An appropriate amount of liquid L in the inner container 3 can be supplied.

FIGS. 6 and 7 are diagrams showing other embodiments of this invention. In the above embodiment, the piston body 8 is provided with the second check valve 24 between the convex portion 26 of the piston 23 and the rear end of the valve holder 25, so that a part of the rear end of the valve holder is However, in this embodiment, a substantially cylindrical plug 31 is attached to the rear end of the valve holder 25 by elastic support members 32, 32. It is constructed by fixing the check valve 24a supported by. The check valve 24a is configured to open when the pressure in the compressed negative pressure space 27 increases, and to close the flow path 28 when the pressure decreases, as in the above-described embodiment.

The application container 1 of this embodiment can obtain the same effects as the above-mentioned embodiment, such as no inconvenience such as liquid clogging.

"Effects of the Invention" According to the application container of this invention, an appropriate amount of liquid in the inner container can be reliably supplied to the applicator at the tip of the holder by pushing the inner container into the holder. In addition, the operation is very simple, since the operation requires only pushing the rear end of the inner container, and after the liquid is supplied, the inner container returns to its original position by the urging force of the urging member. Further, there is no need to provide an air supply path in the container, and therefore, problems such as liquid clogging do not occur. Furthermore, since the inner container can be provided as a cartridge body that is detachable from the cylinder member, when the liquid in the inner container runs out, it can be reused by replacing the cartridge body, which improves economic efficiency. It has the effect of improving. Furthermore, since the inner container is pushed into the holder, the degree of freedom in designing the outer cover to which the holder is attached can be increased, and the inner container can be applied to coating containers of various designs. In addition, since the biasing member is interposed between the holder and the cylinder member, there is no biasing member inside the cylinder member, so it does not interfere with the flow of the liquid, especially for highly viscous liquids. is highly effective.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of this invention, in which Figure 1 is a side sectional view of a coating container;
Fig. 2 is a partially sectional side view of the cartridge body, Fig. 3 is a perspective view of the first check valve, Fig. 4 is a perspective view showing the state in which the holder and the cylinder member are separated, and Fig. 5 FIG. 6 is a side sectional view of the main part of the piston body, FIGS. 6 and 7 are views showing other embodiments of the invention, FIG. 6 is a perspective view of the main part of the piston body, and FIG. is a sectional view of the same side. DESCRIPTION OF SYMBOLS 1... Application container, 3... Inner container, 4... Cylinder member, 5... Holder, 6... Spring (biasing member), 7... Piston body, 8... Application body,
14...First check valve, 15...Bung body, 24...
Second check valve.

Claims (1)

[Scope of utility model registration request] an inner container 3 that is filled with liquid, has a first check valve 14 that opens toward the liquid outlet 13 at one end, and has an airtight stopper 15 slidably provided at the other end;
A cylinder member 4 whose one side abuts a part of the outer surface of the first check valve, and into which the inner container is removably assembled; and a holder 5 into which a part of the cylinder member is slidably fitted. and a biasing member 6 that is interposed between the holder and the cylinder member and biases the cylinder member toward the inner container.
, a cylindrical piston 7 fixed to the holder and slidably fitted into the cylinder member; and a cylindrical piston 7 disposed in the inner hole of the piston, and the inner container being pushed into the holder by the pushing operation of the inner container into the holder. The second check valve 24 is opened by the pressure generated by sliding between the cylinder member and the piston, and the applicator 8 is fixed to the holder and fitted into the inner hole of the piston. Features a coating container.