JP2015224071A - Syringe container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a syringe container capable of sucking a content fluid automatically into a syringe cylinder when a cap is removed from a container body, which can be down-sized and can suppress the content fluid from contacting a spring by arranging the spring on the inner side of an internal cylinder.SOLUTION: A syringe container 1 is characterized: in that an ejection piston 19 has a sealing projection 25 for sealing an inside opening 11a of a syringe part 11 communicating with the inside of a syringe cylinder 26; and in that the sealing projection 25 forms such a clearance C between the outer circumference of the sealing projection 25 and the inside opening 11a as communicates vertically when the sealing projection 25 is mounted in the container body 2 of the syringe cap 3.

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 cap is rotated in the cap removal direction with respect to the inner cap attached to the container body by screws. At that time, the outer cap also rotates relative to the pressing portion biased upward by the spring with respect to the inner cap. Along with this relative rotation, the pressing part moves upward, the piston of the pressing part moves upward in the cylinder (inner cylinder) that stands up from the inner cap, and the liquid content is sucked into the syringe cylinder that communicates with the cylinder. It is done. Then, by further rotating the outer cap, the inner cap also rotates with the outer cap, and the cap can be removed from the container body. When the pressing portion is pushed down, the liquid in the dropper cylinder is discharged from the tip opening.

Japanese Utility Model Publication No. 7-22958

  By the way, the conventional dropper container as described in Patent Document 1 needs to secure a space for arranging the spring outside the inner cylinder, and it is difficult to reduce the size of the cap. Therefore, it is conceivable to arrange the spring inside the inner cylinder. In this case, if the cap is tilted by 90 ° or more when the cap is removed from the container body, the liquid content will come into contact with the spring. In the case where the spring is made of metal, there is a risk of causing problems such as corrosion of the spring.

  Therefore, the present invention aims to reduce the size by disposing the spring inside the inner cylinder in the syringe container that can automatically suck the content liquid into the syringe cylinder when the cap is removed from the container body. At the same time, an object of the present invention is to provide a dropper container capable of suppressing the contact of the content liquid with the spring.

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 is
A cap body having an outer cylinder attached to the mouth in the attached state, and 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 upper surface of the inner cylinder;
The dropper cylinder and a suction piston that is slidable in a liquid-tight manner with respect to the inner surface lower portion of the inner cylinder, and engages with the inner surface lower portion of the inner cylinder so that it can move up and down and cannot be pulled out. An upper end and a dropper portion sandwiched and fixed to the annular wall;
A spring that is disposed inside the inner cylinder and that biases the pressing portion and the dropper portion in a direction that separates them from each other;
The discharge piston has a sealing protrusion that seals an inner opening of the dropper portion communicating with the inside of the dropper cylinder in a state in which the dropper cap is removed from the container body. A gap is formed between the outer peripheral surface of the stop projection and the inner opening so as to communicate with the upper and lower sides in the mounted state.

  Moreover, in the dropper container according to the present invention, it is preferable that a longitudinal groove for forming the gap is formed on the outer peripheral surface of the sealing projection.

  In the dropper container according to the present invention, it is preferable that an inner diameter of the inner surface upper portion of the inner cylinder is larger than an inner diameter of the inner surface lower portion.

  Furthermore, 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 the dropper container that can automatically suck the content liquid into the dropper cylinder when the cap is removed from the container body, the spring is arranged inside the inner cylinder, and at the same time, downsizing is achieved. In addition, it is possible to provide a dropper container that can suppress contact of the content liquid with the spring.

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 figure showing a mode that the dropper cap was removed and inclined 90 degrees or more in the dropper container of FIG.

  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 a cap main body portion 9 including an inner cap 7 and an outer cap 8, a pressing portion 10 disposed on the inner upper portion of the cap main body portion 9 so as to be vertically movable, and a lower side of the pressing portion 10. It is provided with a dropper portion 11 arranged to be movable up and down.

  The inner cap 7 includes a cylindrical outer cylinder 13 having an inner screw portion 12 corresponding to the outer screw portion 6 of the container body 2, an annular wall 14 projecting inward from the inner surface of the outer cylinder 13, and the annular wall 14. It has the inner cylinder 15 which protrudes upwards. In the present embodiment, the outer cylinder 13 is screw-engaged with the container body 2. However, it is also possible to adopt a configuration in which mounting and removal is performed up and down by concavo-convex fitting.

  The outer cap 8 is fitted and fixed to the outer peripheral surface of the outer cylinder 13, the side wall 16 extends along the outer peripheral surface of the inner cap 7, and the top wall 17 extends inward from the upper end of the side wall 16 and has an opening 17 a at the center. It consists of and.

  The pressing unit 10 includes a pressing member 18 and a discharge piston 19 that is fitted and disposed below the pressing member 18. The pressing member 18 includes a cylindrical outer wall 20 that passes through an opening 17 a formed in the top wall 17 of the outer cap 8, and an upper wall 21 that closes the upper end of the outer wall 20. A stepped portion 20 a protruding outward is provided at the lower end portion of the outer wall 20, and engages with the inner edge portion of the top wall 17 so that the pressing portion 10 cannot be pulled out from the inner upper portion of the cap main body portion 9. .

  The discharge piston 19 is fitted and fixed to the inner surface of the outer wall 20 of the pressing member 18, and a cylindrical fitting wall portion 22 whose upper end is in contact with the lower surface of the upper wall 21 and a seal that closes the lower end of the fitting wall portion 22. It comprises a stop wall 23 and a first sliding portion 24 that extends outward from an intermediate portion in the vertical direction of the fitting wall portion 22 and is slidable in a liquid-tight manner with respect to the upper portion of the inner surface of the inner cylinder 15. . The inner peripheral side portion of the sealing wall 23 forms a bottomed cylindrical sealing protrusion 25 protruding downward.

  The dropper portion 11 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, thereby preventing the dropper portion 10 from being pulled out from the lower portion of the inner surface of the inner cylinder 15. 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 relative to a lower portion of the inner surface of the inner cylinder 15 below the first sliding portion 24. In addition, a spring 31 that urges the discharge piston 19 and the suction piston 27 in a direction that separates them from each other is disposed inside the inner cylinder 15. Further, in this example, in the mounted state shown in FIG. 1, the lower end of the fitting wall portion 22 of the discharge piston 19 abuts on the upper end of the suction piston 27, so that the pressing portion 10 is supported by the dropper portion 11 from below. Can not be pushed down. Specifically, the dropper cylinder 26 is supported from below by the packing 28 disposed at the upper end of the mouth 5 of the container body 2, and the discharge piston 19 is supported from below by the suction piston 27 provided at the upper end of the dropper cylinder 26. Thus, the pressing portion 10 cannot be pushed down.

  In the dropper portion 11, an inner opening 11 a communicating with the inside of the dropper cylinder 26 is formed. Specifically, the inner opening 11 a is formed by the inner peripheral edge of the annular lip 32 formed in the suction piston 27. The sealing projection 25 of the discharge piston 19 described above forms a gap C that communicates vertically between the outer peripheral surface of the sealing projection 25 and the inner opening 11a in the mounted state shown in FIG. As shown in FIG. 2, the inner opening 11 a is sealed when the dropper cap 3 is removed from the container body 2. In this example, the gap C is formed by a vertical groove 33 formed on the outer peripheral surface of the sealing protrusion 25.

  In the present embodiment, the outer cap 8 and the spring 31 are preferably made of metal, and the other members can be made of, for example, synthetic resin.

  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. Thereby, since the inside of the dropper cylinder 26 becomes a negative pressure, the content liquid can be sucked up from the lower end opening of the dropper cylinder 26 as shown by an 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 that a predetermined amount of content liquid can be sucked up accurately. At this time, since the discharge piston 19 is biased by the spring 31, the pressing portion 10 does not move downward and is held at the upper end position of the cap main body portion 9. Further, the amount of the content liquid automatically sucked up by the dropper cap 3 changes the moving distance of the sucking piston 27 by changing the vertical position of the engaging portion 29 or the like, or changes the inner diameter of the inner cylinder 15. Thus, the amount of siphoning 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 10 against the repulsive force of the spring 31. In this embodiment, when the pressing portion 10 of the removed dropper cap 3 is pushed down to the maximum, the lower end of the fitting wall portion 22 of the discharge piston 19 comes into contact with the upper surface of the suction piston 27. For this reason, the distance that the suction piston 27 moves downward when the dropper cap 3 is removed and the distance that the discharge piston 19 moves when the pressing portion 10 is pushed down to the maximum are the same.

  Here, in this 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 19 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 19 is larger than the outer diameter of the second sliding portion 30 of the suction piston 27. With such a configuration, in the mounted state shown in FIG. 1, the discharge piston 19, in a state where the pressing portion 10 shown in FIG. 3 is pushed down rather than the volume of the space S <b> 1 surrounded by the discharge piston 19, the suction piston 27 and the inner cylinder 15, The volume of the space S2 surrounded by the suction piston 27 and the inner cylinder 15 can be made smaller. Accordingly, since the amount to be discharged can be made larger than the amount to be sucked up, it is possible to discharge all of the sucked up content liquid more reliably, and it is possible to more reliably take out the intended amount of the content liquid. Become.

  In the present embodiment, as shown in FIG. 2, the sealing protrusion 25 of the discharge piston 19 seals the inner opening 11 a of the dropper portion 11 in a state where the dropper cap 3 is removed from the container body 2. Yes. Therefore, when taking out the content liquid from this state, as shown in FIG. 4, even when the dropper cap 3 is tilted by 90 ° or more, the sucked-up content liquid enters the pressing portion 10 side beyond the inner opening 11a, Contact with the spring 31 can be suppressed. Therefore, even when the spring 31 is made of metal, the occurrence of problems such as corrosion of the spring 31 can be suppressed. In addition, the content liquid that has entered the pressing portion 10 side remains at the intrusion site when the dropper cap 3 is returned to the upright state, which may cause problems in taking out a desired amount of the content liquid. Can be suppressed.

  Furthermore, in this embodiment, since the gap C is formed by providing the vertical groove 33 on the outer peripheral surface of the sealing projection 25 of the discharge piston 19, when the pressing portion 10 is pushed down as shown in FIG. The pressing portion 10 can function not only the first sliding portion 24 but also the sealing protrusion 25 as a guide portion that is in sliding contact with the inner cylinder 15 or the inner opening 11a. , The pressing portion 10 does not tilt when pressed down).

  Needless to say, the dropper container according to the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Dropper container 2 Container body 3 Dropper cap 4 Container main-body part 5 Mouth part 6 External thread part 7 Inner cap 8 Outer cap 9 Cap main-body part 10 Press part 11 Dropper part 11a Inner opening 12 Inner screw part 13 Outer cylinder 14 Annular wall 14a Inner edge portion 15 Inner tube 16 Side wall 17 Top wall 17a Opening 18 Pressing member 19 Discharge piston 20 Outer wall 20a Stepped portion 21 Upper wall 22 Fitting wall portion 23 Sealing wall 24 First sliding portion 25 Sealing protrusion 26 Dropper tube 26a Expansion Diameter portion 26b Protruding portion 27 Suction piston 28 Packing 28a Flange 29 Engaging portion 30 Second sliding portion 31 Spring 32 Annular lip 33 Vertical groove C Clearance S1, S2 Space

Claims (4)

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 is
A cap body having an outer cylinder attached to the mouth in the attached state, and 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 upper surface of the inner cylinder;
The dropper cylinder and a suction piston that is slidable in a liquid-tight manner with respect to the inner surface lower portion of the inner cylinder, and engages with the inner surface lower portion of the inner cylinder so that it can move up and down and cannot be pulled out. An upper end and a dropper portion sandwiched and fixed to the annular wall;
A spring that is disposed inside the inner cylinder and that biases the pressing portion and the dropper portion in a direction that separates them from each other;
The discharge piston has a sealing protrusion that seals an inner opening of the dropper portion communicating with the inside of the dropper cylinder in a state in which the dropper cap is removed from the container body. A dropper container characterized in that a gap communicating vertically between the outer peripheral surface of the stop projection and the inner opening in the mounted state is formed.   The dropper container according to claim 1, wherein a longitudinal groove that forms the gap is formed on an outer peripheral surface of the sealing protrusion.   The dropper container according to claim 1 or 2, wherein an inner diameter of the upper part of the inner surface of the inner cylinder is larger than an inner diameter of the lower part of the inner surface.   The dropper container according to any one of claims 1 to 3, 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.

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