JP2015196507A - Syringe container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a syringe container capable of wholly discharging a sucked-up content fluid, without enlarging the whole container.SOLUTION: A syringe container 1 can discharge a sucked-up content fluid, and a syringe cap 3 comprises: an outer cylinder part 7, an inner cylinder part 15 connected to the outer cylinder part 7; a pressing part 9 for engaging with an inside upper part of the outer cylinder part 7 so as to be vertically movable and so as not to slip out, the pressing part 9 having a discharge piston 18 fluid-tightly slidable to an inner surface upper part of the inner cylinder part 15; a syringe cylinder 26; a syringe part 10 for engaging with an inside lower part of the outer cylinder part 7 so as to be vertically movable and so as not to slip out and held by/fixed to the mouth part 5 upper end and an annular wall 14, the syringe part 10 having a sucking-up piston 27 fluid-tightly slidable to an inner surface lower part of the inner cylinder part 7; and a spring 31 for energizing the pressing part 9 and the syringe part 10 in the mutually separating direction. An inner diameter of an inner surface upper part in the inner cylinder part 15 is larger than an inner diameter of the inner surface lower part.

Description

  The present invention relates to a dropper container capable of taking out a content liquid such as a lotion or a chemical contained in a container body by a dropper function.

  As such a dropper container, the content liquid is automatically sucked into the dropper cylinder by removing the cap attached to the container body, and the sucked content liquid is discharged by depressing the push button (pressing part) on the top of the cap. A container having such a structure is known (for example, Patent Document 1).

  When using the dropper container of Patent Document 1, first, the outer cylinder of the cap attached to the container body is pushed down. At that time, the pressing portion is also pressed down simultaneously, the internal elastic dome is compressed, and the air in the dropper cylinder is discharged. Next, when the depressed outer cylinder is rotated, the cap is pushed upward by the rotation of the meshing portion of the peripheral wall, and the engagement with the container is released. Thereafter, when the outer cylinder is pulled upward, the outer cylinder moves upward with respect to the syringe cylinder, the elastic dome is restored to the original state, the liquid content in the container body is sucked into the syringe cylinder, and the entire cap is further moved upward The cap can be removed from the container body by pulling up. When the pressing portion is pushed down, the liquid in the dropper cylinder is discharged from the tip opening.

Japanese Utility Model Publication No. 7-17756

  By the way, in the case of a dropper container that can automatically suck the content liquid into the dropper cylinder when the cap is removed from the container body as described above, all of the content liquid sucked into the dropper cylinder by pushing down the pressing part is discharged. In some cases, the liquid contents remain in the dropper cylinder. As a method of solving this problem, it is conceivable to increase the amount that can be discharged by setting a moving distance when the pressing portion is pressed down, but in that case, the protruding amount of the pressing portion protruding from the cap increases, It leads to the enlargement of the whole container.

  Therefore, according to the present invention, in the dropper container that can automatically suck the content liquid into the dropper cylinder when the cap is removed from the container body, all the sucked-up content liquid is obtained without enlarging the entire container. It aims at providing the dropper container which can be discharged.

In order to solve the above-mentioned problems, a dropper container according to the present invention is detachably attached to a container body that contains a content liquid and a mouth portion of the container body, and hangs down inside the container body when attached to the container body. A dropper cap having a dropper cylinder, and when the dropper cap is removed from the container body, the content liquid is automatically sucked into the dropper cylinder and can be discharged by pushing down the pressing portion. Because
The dropper cap
An outer cylinder part that is attached to the mouth in the attached state;
An inner cylinder connected to the outer cylinder via an annular wall;
A pressing piston that has a discharge piston that is slidable in a liquid-tight manner with respect to the inner surface upper portion of the inner cylinder portion, and that engages with the inner upper portion of the outer cylinder portion so that it can move up and down and cannot be removed;
The dropper cylinder and a suction piston slidable in a liquid-tight manner with respect to the lower part of the inner surface of the inner cylinder part are engaged with the inner lower part of the outer cylinder part so that it can move up and down and cannot be removed. An upper end of the mouth portion and a dropper portion sandwiched and fixed to the annular wall;
A spring disposed between the pressing portion and the dropper portion and biasing them in a direction to separate them from each other;
An inner diameter of the upper part of the inner surface of the inner cylinder part is larger than an inner diameter of the lower part of the inner surface.

  Moreover, in the dropper container according to the present invention, it is preferable that the pressing portion is supported so as not to be pressed down by contacting the dropper portion in the mounted state.

  According to the present invention, in a dropper container that can automatically suck the content liquid into the dropper cylinder when the cap is removed from the container body, all the sucked-up content liquid is discharged without enlarging the entire container. It is possible to provide a dropper container that can be used.

1 is a half sectional view in front view of an embodiment of a dropper container according to the present invention. In the dropper container of FIG. 1, it is a figure showing a mode that a dropper cap is removed from a mounting state. In the dropper container of FIG. 1, it is a figure showing a mode that the dropper cap was removed and the press part was pushed down. It is a half sectional view in front view about other embodiments of a syringe container according to the present invention.

  Hereinafter, the dropper container of the present invention will be described with reference to the drawings. A dropper container 1 according to an embodiment of the present invention shown in FIG. 1 includes a container body 2 and a dropper cap 3 that is detachably attached to the container body 2. FIG. 1 shows a state where the dropper cap 3 is attached to the mouth portion 5 of the container body 2.

  The container body 2 includes a bottomed cylindrical container main body 4 that stores the content liquid, and a cylindrical mouth 5 provided at the upper end of the container main body 4. An external thread portion 6 is provided.

  The dropper cap 3 includes an outer cap 7 that constitutes an outer cylinder portion, an inner cap 8 that is fitted and fixed to the inner surface of the outer cap 7, a pressing portion 9 that is arranged to be movable up and down with respect to the outer cap 7, A dropper portion 10 is provided inside the inner cap 8 so as to be movable up and down.

  The outer cap 7 includes a substantially cylindrical side wall 11 that is slightly reduced in diameter upward, and a top wall 12 that extends inward from the upper end of the side wall 11 and has an opening 12a at the center.

  The inner cap 8 protrudes upward from the annular wall 14, a cylindrical fitting sidewall 13 that fits into the inner surface of the side wall 11 of the outer cap 7, an annular wall 14 that projects inward from the inner surface of the fitting sidewall 13. And the inner cylinder 15 constituting the inner cylinder part. In the present embodiment, an inner thread portion 16 corresponding to the outer thread portion 6 of the container body 2 is provided on the lower inner surface of the fitting side wall 13, but the inner thread portion is disposed on the inner surface of the sidewall 11 of the outer cap 7. 16 may be formed.

  The pressing unit 9 includes a pressing member 17 and a discharge piston 18 that is fitted and disposed below the pressing member 17. The pressing member 17 includes a cylindrical outer cylinder 19 that passes through an opening 12 a formed in the top wall 12 of the outer cap 7, an upper wall 20 that closes the upper end of the outer cylinder 19, and an upper wall inside the outer cylinder 19. It is comprised with the inner cylinder 21 drooping from 20. A stepped portion 19 a that protrudes outward is provided at the lower end portion of the outer cylinder 19 and engages with the inner edge portion of the top wall 12 so that the pressing portion 9 cannot be pulled out from the outer cap 7.

  The discharge piston 18 is fitted and fixed to the inner surface of the inner cylinder 21 of the pressing member 17, and the upper end of the discharge piston 18 is in contact with the lower surface of the upper wall 20 and the lower end of the fitting wall portion 22 is closed. A first sliding that extends outward from the lower end of the fitting wall portion 22 so as to extend the sealing wall 23 outward, and is slidable in a liquid-tight manner with respect to the upper portion of the inner surface of the inner cylinder 15. It is comprised by the part 24 and the support cylinder 25 hanging down from the lower surface of the sealing wall 23. FIG.

  The dropper portion 10 is fitted to the dropper cylinder 26 that hangs down inside the container body 2 with the dropper cap 3 attached, the suction piston 27 that is fitted and fixed to the upper end of the dropper cylinder 26, and the outer peripheral surface of the dropper cylinder 26. And the packing 28 to be formed. In this embodiment, the dropper cylinder 26 extends linearly and has a tip (lower end) tapered. However, the present invention is not limited to this. For example, the tip may be bent or the outer shape of the tip may be thick. May be.

  In the vicinity of the upper end portion of the dropper cylinder 26, an enlarged diameter portion 26 a having an enlarged diameter is provided, and the lower surface of the enlarged diameter portion 26 a comes into contact with the upper surface of the packing 28. The packing 28 is retained by the expanded diameter portion 26a and the convex portion 26b below the expanded diameter portion 26a. Further, an engaging portion 29 protruding outward is provided on the outer surface of the enlarged diameter portion 26a. The engaging portion 29 engages with the inner edge portion 14a of the annular wall 14 when the dropper cap 3 is removed, so that the dropper portion 10 cannot be pulled out from the inner cap 8. The packing 28 has a flange 28 a that is sandwiched and fixed between the upper end of the mouth portion 5 and the annular wall 14 when the packing 28 is attached to the container body 2, and the flange 28 a is at the upper end of the mouth portion 5. By being clamped and fixed, the dropper cylinder 26 is fixed to the container body 2 via the packing 28 in the mounted state.

  The suction piston 27 has a second sliding portion 30 that can slide in a liquid-tight manner with respect to a lower portion of the inner surface of the inner cylinder 15 below the first sliding portion 24. In addition, a spring 31 is disposed between the discharge piston 18 and the suction piston 27 to urge them in a direction to separate them from each other. The upper end opening of the dropper cylinder 26 communicates with the sealing space S surrounded by the discharge piston 18, the inner cylinder 15, and the suction piston 27. Further, the volume of the sealing space S is changed by the vertical movement of the discharge piston 18 and the suction piston 27.

  Then, the usage method of the dropper container 1 which has said structure is demonstrated. In the mounted state shown in FIG. 1, the content liquid is not sucked up inside the dropper cylinder 26.

  When the dropper cap 3 is screwed out of the container body 2 from the mounted state of FIG. 1, until the suction piston 27 comes into contact with the inner edge portion 14 a of the annular wall 14 as shown in FIG. Move down. As a result, the volume of the sealed space S is increased and the inside of the dropper cylinder 26 becomes negative pressure, so that the content liquid can be sucked from the lower end opening of the dropper cylinder 26 as shown by the arrow in FIG. When the dropper cap 3 is removed from the mounted state shown in FIG. 1, the distance that the suction piston 27 moves downward is always constant, so the amount by which the volume of the sealed space S expands is also constant, a preset amount It is possible to suck up the contents of the liquid accurately. At this time, the pressing portion 9 does not move downward because the discharge piston 18 is biased by the spring 31, and is held at the upper end position of the outer cap 7. Further, since the amount of the content liquid automatically sucked up by the dropper cap 3 depends on the amount by which the volume of the sealed space S is enlarged, the moving distance of the suction piston 27 is changed by changing the vertical position of the engaging portion 29 or the like. By changing or changing the inner diameter of the inner cylinder 15, the amount of suction can be set as appropriate.

  As shown in FIG. 3, the sucked content liquid can be discharged from the lower end opening of the dropper cylinder 26 by pushing down the pressing portion 9 against the repulsive force of the spring 31. FIG. 3 shows a state in which the pressing portion 9 is pushed down by the distance moved by the suction piston 27 when the dropper cap 3 is removed.

  Here, in the present embodiment, the inner cylinder 15 has an inner diameter at the upper part of the inner surface where the first sliding part 24 of the discharge piston 18 slides, and an inner diameter of the lower part of the inner surface where the second sliding part 30 of the suction piston 27 slides. Correspondingly, the outer diameter of the first sliding portion 24 of the discharge piston 18 is larger than the outer diameter of the second sliding portion 30 of the suction piston 27. With such a configuration, when the dropper cap 3 is removed, the suction piston 27 moves and the volume of the sealing space S is increased, so that the sealing space S is reduced when the pressing portion 9 is pushed down by the same distance. The amount of reduction of the volume increases. That is, the amount to be discharged can be made larger than the amount to be sucked up without increasing the pressing distance of the pressing portion 9. For this reason, it is possible to more reliably discharge all of the sucked content liquid without increasing the size of the entire container, and it is possible to more reliably take out a predetermined amount of the content liquid.

  FIG. 4 shows a dropper container 100 according to another embodiment of the present invention, and the components corresponding to the previous dropper container 1 are denoted by common reference numerals.

  In the mounted state shown in FIG. 4, the dropper container 100 is supported by the dropper part 10 from below and cannot be pushed down. Specifically, the dropper cylinder 26 is supported from below by the packing 28 disposed at the upper end of the mouth portion 5 of the container body 2, and the support cylinder 25 of the discharge piston 18 is supported on the suction piston 27 provided at the upper end of the dropper cylinder 26. , The pressing member 17 is supported from below, and the pressing portion 9 cannot be pushed down. As a result, the pressing portion 9 is not accidentally pushed down in the mounted state, and the content liquid is not sucked into the dropper cylinder 26. As a result, only a predetermined amount of the content liquid can be drawn up accurately, and if all of the sucked up content liquid is discharged, the intended amount of the content liquid can be taken out. In the present embodiment, when the pressing portion 9 of the removed dropper cap 3 is pushed down to the maximum, the lower end of the support cylinder 25 of the discharge piston 18 comes into contact with the upper surface of the suction piston 27. Therefore, the distance that the suction piston 27 moves downward when the dropper cap 3 is removed and the distance that the discharge piston 18 moves when the pressing portion 9 is pushed down to the maximum are the same, but the inner surface of the inner cylinder 15 Since the inner diameter of the upper part is larger than the inner diameter of the lower part of the inner surface, the amount to be discharged is larger than the amount to be sucked up, and all the sucked-up liquid is more reliably discharged without increasing the overall size of the container. It becomes possible to do.

  The dropper container according to the present invention is not limited to the embodiment described above, and various modifications can be made within the scope according to the claims. For example, in the above-described embodiment, the dropper cap 3 is screw-engaged with the container body 2;

DESCRIPTION OF SYMBOLS 1,100 Dropper container 2 Container body 3 Dropper cap 4 Container main-body part 5 Mouth part 6 External thread part 7 Outer cap (outer cylinder part)
8 Inner cap 9 Pressing part 10 Dropper part 11 Side wall 12 Top wall 12a Opening 13 Fitting side wall 14 Annular wall 15 Inner cylinder (inner cylinder part)
16 Inner thread portion 17 Press member 18 Discharge piston 19 Outer cylinder 19a Stepped portion 20 Upper wall 21 Inner tube 22 Fitting wall portion 23 Sealing wall 24 First sliding portion 25 Support tube 26 Dropper tube 26a Expanded portion 26b Protruding portion 27 Suction piston 28 Packing 28a Flange 29 Engaging portion 30 Second sliding portion 31 Spring S Sealing space

Claims (2)

A container body that contains the content liquid, and a dropper cap that is detachably attached to the mouth of the container body and has a dropper cylinder that hangs inside the container body when attached to the container body. A syringe container that automatically sucks up the content liquid into the syringe cylinder when it is removed from the body, and can discharge the sucked-up content liquid by pushing down the pressing part,
The dropper cap
An outer cylinder part that is attached to the mouth in the attached state;
An inner cylinder connected to the outer cylinder via an annular wall;
A pressing piston that has a discharge piston that is slidable in a liquid-tight manner with respect to the inner surface upper portion of the inner cylinder portion, and that engages with the inner upper portion of the outer cylinder portion so that it can move up and down and cannot be removed;
The dropper cylinder and a suction piston slidable in a liquid-tight manner with respect to the lower part of the inner surface of the inner cylinder part are engaged with the inner lower part of the outer cylinder part so that it can move up and down and cannot be removed. An upper end of the mouth portion and a dropper portion sandwiched and fixed to the annular wall;
A spring disposed between the pressing portion and the dropper portion and biasing them in a direction to separate them from each other;
An inner diameter of the upper part of the inner surface of the inner cylinder part is larger than an inner diameter of the lower part of the inner surface. The dropper container according to claim 1, wherein the pressing portion is in contact with the dropper portion in the mounted state and is supported so as not to be pushed down.

Images