JPS6257321B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an extrusion container for liquid cosmetics, specifically a cylinder which stores liquid cosmetics inside the front end side of a cylindrical container body and is equipped with a piston member for extrusion operation at the rear end side. The liquid cosmetics on the distal end side are pushed by the rising air pressure in the cylinder part caused by the pushing operation of the piston member to push the sliding stopper disposed between the cosmetic storage part and the cylinder part. This invention relates to a push-out container for cosmetics that is pushed out from the bottom.

As such an extrusion container, an air supply hole to the cylinder part is provided in the piston member, and this air supply hole is opened to communicate with the outside on the side surface of the piston member, and further, in order to prevent air from flowing out during the pushing operation of the piston member. It has been proposed that a check valve is installed at the inner end of the air supply hole.
Publication No. 60810). However, providing a check valve in this manner complicates the structure, requires troublesome installation and assembly work during manufacturing, and is prone to failure. Moreover, in the above example, there is no means to adjust the pushing length of the piston member, and therefore the maximum amount of cosmetics that can be pushed out by pushing the piston member cannot be adjusted. , more cosmetics than necessary tend to be extruded.

In view of the above, the present invention is capable of preventing air outflow during the pushing operation of the piston member without requiring a check valve, and allows air to be supplied immediately when the pushing is released. The maximum extrusion amount by pushing the piston member can be adjusted. That is, the present invention provides an extrusion type liquid cosmetic container as described above, in which an opening is formed inside and outside as an air supply port that penetrates the hollow part of the piston member installed in the cylinder part in the axial direction.
The outer end opening can be closed with a finger, and a screw is provided on the outer periphery of the protruding end of the shaft, and a flange member is screwed into the screw so that the screwing position can be adjusted. .

By having the above configuration, the container of the present invention can simultaneously close the air supply hole with a finger when the piston member is pushed in, and open it simultaneously when the pushing operation is released, and is therefore equipped with a reverse valve. At least by the pushing operation by the piston member, the air pressure inside the cylinder can be increased and the cosmetic product can be pushed out. Furthermore, by adjusting the screwing position of the flange member to the shaft portion of the piston member, the distance between the flange member and the rear end of the container body can be changed and the maximum pushing length of the piston member can be arbitrarily set. The maximum extrusion amount of cosmetics can be adjusted by pushing the member.

Next, embodiments of the present invention will be described based on the drawings.

Reference numeral 1 denotes a cylindrical container body of a required length, and a partition wall 3 with an opening in the center as a communication hole 2 is provided at a suitable location inside the container body. A nozzle 7 having a nozzle hole 6 in the center is detachably attached to the tip of the container body 1, that is, the end opening on the side of the cosmetic storage section 4, mainly by screwing means. The partition wall 3 may be formed integrally with the container body 1, but in the case shown in the figure, it is formed separately from an elastic material such as rubber, and is fitted and fixed within the container body 1. A liquid cosmetic product a is stored in the cosmetic storage portion 4. In the case shown in the figure, the liquid cosmetic product a is stored in a cartridge-type cylindrical container 8, and the bottom end of the cylindrical container 8 is At the same time, the open end 8a of the cylindrical container 8 is inserted into the nozzle 7 from the side, and the partition wall 3 is pressed by the nozzle 7.
The bottom end is held in close contact with the
It is desirable to screw the open end 8a of the cylindrical container 8 to the nozzle 7 as shown in the figure to prevent leakage of the liquid cosmetic a. In addition, a through hole 9 is provided at the bottom end of the cylindrical container 8, and a sliding stopper 10 for shielding between the liquid cosmetics a and the partition wall 3 is provided on the bottom end side of the cylindrical container 8. The liquid cosmetic a can be pushed out from the nozzle hole 6 by moving the sliding stopper 10 toward the distal end.

The sliding plug body 10 has a circumferential groove 11 on its outer periphery.
A sealing member 12 such as an O-ring is installed inside,
It is provided so that it can slide in close contact with the cylindrical container 10. The present invention is not limited to this, and it is possible to implement various forms that are slidable and have good sealing properties, such as forming the entire body in an x-shape using rubber or the like. This cartridge-type cylindrical container 8 is sealed by pasting aluminum foil or the like on the open end during handling until it is installed and used, and is peeled off when it is used and installed into the container body 1. Although it is preferable to provide the liquid cosmetic a in a replaceable cartridge format as described above, the cosmetic storage section 4 of the container body 10
It is also possible to directly store liquid cosmetics therein, in which case a sliding stopper that shields the gap between the liquid cosmetics and the partition wall 3 may be provided to slide inscribed on the inner periphery of the container body 1.

On the other hand, the operation cylinder section 5 has a hollow shaft section 1.
3 and a flange-shaped piston portion 14 provided at one end thereof, a piston member 15 is provided with the shaft portion 13 protruding from the rear end of the container body 1 and is movable forward and backward. A spring 16 is provided that biases the air. In the case of the figure, between the inner flange portion 17 provided at the rear end of the operating cylinder portion 5 and the partition wall 3, a cylinder cylinder having openings on both end walls in the axial direction with approximately the same diameter as the inner diameter of the partition wall 3 and the inner flange portion 17, respectively. 18 is fitted, and the piston member 15 is attached to this cylinder cylinder 1.
8 and is held in a non-removable manner. The piston member 15 is formed with an air supply hole 19 having a relatively large diameter that passes through its hollow interior in the axial direction, and is opened from the inside and outside, and the opening at the outer end of the shaft portion 13 can be closed with a finger. There is. An external thread 20 is formed on the outer periphery of the shaft part 13 for pushing the piston member 15, and a flange member 21 is screwed onto this.
1, the distance between the flange portion 21 and the rear end of the container body 1 is changed, and the piston member 15
The pushing stroke, or the maximum amount of cosmetic product that can be pushed out, can be adjusted.

22 in the figure is a cap that is attached to the nozzle 7 by screwing means or fitting means,
A protruding plug 23 that fits into the nozzle hole 6 during deposition is provided at the center of the inside thereof.

The present invention is constructed as described above, and in order to extrude the liquid cosmetic a, the container body 1 is
The shaft portion 13 of the piston member 15 that protrudes from the rear end
By pressing the finger 24 against the outer end, the air supply hole 19 is opened inside and outside through the piston member 15.
The outer end opening of the operating cylinder is closed with the finger 24, and in this state, the piston member 15 is pushed in against the biasing force of the spring 16. Since the air supply hole 19 is closed as described above, the operating cylinder The air inside the section 5 is compressed with the pushing operation without escaping to the outside, and its internal pressure increases.
The sliding stopper 10 extends to the part of the sliding stopper 10 in the cosmetic storage section 4 that is communicated with through the opening of the slide stopper 1.
0 is pushed toward the tip side by the high air pressure, and with this movement, the liquid cosmetic a is pushed out from the nozzle hole 6 at the tip. Then, when the pushing operation on the piston member 15 is released, the air supply hole 19 becomes open and communicating, and as the piston member advances and moves due to the biasing force of the spring 10, air is immediately supplied to the cylinder. The internal pressure does not become low, and the sliding stopper 10 that has moved toward the distal end remains at the moving position. In this way, by simply pushing the piston member 15, the sliding stopper 10 can be sequentially pushed toward the distal end, and the liquid cosmetic can be reliably pushed out in required amounts.

Furthermore, by changing the screwing position of the flange member 21 screwed onto the outer periphery of the protruding end of the shaft portion 13 and changing the distance between the flange member 21 and the rear end of the container body 1, the maximum pushing length of the piston member 15 can be changed. It can be set arbitrarily, and by extension, the maximum extrusion amount of cosmetics can be adjusted. For example, if the distance between the flange member 21 and the rear end of the container body 1 is reduced, the piston member 1
When the piston member 15 is pushed in, the flange member comes into contact with the rear end of the container body to prevent further pushing, thereby regulating the maximum amount of cosmetics pushed out by pushing the piston member 15, and pushing out more cosmetics than necessary. You don't have to worry about getting lost.

As described above, according to the present invention, it is possible to prevent the air from flowing out during the pushing operation by using the finger that pushes the piston member, and moreover, air can be immediately supplied when the pushing is released, and cosmetics can be pushed out using compressed air pressure. Not only can this be easily and reliably carried out, but there is no need for anything such as a check valve, which simplifies the structure and simplifies assembly work, making it easy and inexpensive to manufacture. Furthermore, the maximum pushing length of the piston member can be set arbitrarily, and the maximum amount of cosmetics pushed out by pushing the piston member can be adjusted as necessary, so there is no waste. Further, it has excellent effects such as being difficult to cause trouble during extrusion operation and being easy to use.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal cross-sectional view, and FIG. 2 is a partial longitudinal cross-sectional view during cosmetic extrusion. 1... Container body, 3... Partition wall, 4... Cosmetic storage part,
5... Operation cylinder part, 6... Nozzle hole, 7... Nozzle, 8... Cylindrical container, 10... Sliding plug body, 13... Shaft part, 15... Piston member, 16... Spring, 1
9...Air supply hole.

Claims (1)

[Claims] 1. A partition wall having a communication hole is provided at a suitable position inside a cylindrical container body equipped with a nozzle at the tip, and the tip side of the partition wall is configured as a cosmetic storage section, and the other end side is partitioned as an operation cylinder section, and the inside of the cosmetic storage section is configured. is equipped with a sliding stopper that can be slid in the axial direction to shield between the liquid cosmetics stored in the container and the partition wall, and the operating cylinder is equipped with a piston member having a hollow shaft that connects to the container body. The piston member is equipped with a spring that urges the piston member rearward in the axial direction, and the piston member has an air supply hole that passes through the hollow portion thereof in the axial direction. 1. A liquid cosmetics container, comprising: openings formed on the inside and outside; a screw formed on the outer periphery of the protruding end of the shaft; and a flange member screwed onto the flange so as to be adjustable in position.