JP4045533B2 - Dripping container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dripping container, and more particularly to a small dripping container such as an eye drop container capable of dispensing contents without allowing external air to enter the container.
[0002]
[Prior art]
For example, in containers that store medicines such as eye drops, many containers are used to pour out or drop a small amount by pressing the body of the container with your finger. Then, there was a problem that the body part elastically returned to the original shape, and as a result, external air entered the inside of the container, and foreign substances and germs existing in the air were mixed into the content liquid.
[0003]
As a method for solving such a problem, for example, Japanese Patent Laid-Open No. 4-297264 and Japanese Patent Laid-Open No. 6-14972 disclose a method in which a filter is provided in the discharge passage of the content liquid, -183047 describes a method for suppressing the entry of external air by allowing the container end to be folded into a flattened or flattened state so that the volume of the container decreases as the liquid content decreases. There is.
[0004]
Furthermore, as a method for preventing external air from entering, Japanese Patent Application Laid-Open No. 10-180853 comprises an outer layer and an inner layer that is detachably laminated on the outer layer. However, there is a description of a laminated container that introduces external air into the gap between the outer layer and the inner layer.
[0005]
[Problems to be solved by the invention]
However, the method of attaching a filter in the discharge flow path has problems such as clogging of the filter or the propagation of various bacteria in the filter portion, and the method of flattening the end portion of Japanese Utility Model Laid-Open No. 63-183047 Mainly, for example, it is intended to apply what is used for a toothpaste tube and the like, and there are problems in convenience of use and appearance.
[0006]
The container disclosed in Japanese Patent Laid-Open No. 10-180853 is used, for example, by storing a shampoo or the like and attaching a dispenser pump to the mouth part. In a dropping container such as eye drops, the body part can be pressed without using a pump or the like. Need to be dripped.
[0007]
For this reason, in order to use a peelable laminated container as a dripping container, the first check valve has a function of allowing the contents to be poured out at the outlet of the container and disabling external air entry. In addition, a second check valve having a function of allowing the outside air to enter the gap between the outer layer and the inner layer and allowing the outflow to be impossible is required. It was difficult to implement the functions while maintaining high productivity and difficult to realize.
[0008]
The present invention was devised to solve the above-described problems of the prior art, and in particular, the creation of a check valve mechanism that can be realized with a small container while maintaining high productivity as a technical problem, Accordingly, an object of the present invention is to provide a dripping container that has high productivity, does not enter the outside air, and is excellent in hygiene.
[0009]
[Means for Solving the Problems]
In the present invention for solving the above technical problem, the means according to claim 1 is formed by laminating an inner layer which can be peeled off from the outer layer on the inner surface of the outer layer, and an intake hole in the outer layer portion of the cylindrical mouth portion. Having a container body formed,
It has a top cylindrical fitting tube piece, an opening is formed in the center of the top wall of the fitting tube piece, a seal tube piece is erected near the periphery of the opening, and the fitting tube piece is the mouth Having an inner stopper that is tightly fitted to and fixed to the container body,
In the state where the inner peripheral surface of the lower end portion is in close contact with the container main body, the container main body has a cylindrical outer cylinder that covers the upper part of the container main body, and a spout is formed at the center of the upper end of the outer cylinder. A cylindrical drooping cylinder piece is hung outside the spout , a cylindrical upper seal cylinder piece is hung outside the dripping cylinder piece, and an upper and lower through hole is formed outside the upper seal cylinder piece. Having a cap body with an upright cylindrical pour tube,
It has a cylindrical tube cylinder that fits tightly into the gap between the hanging tube piece of the cap body and the upper seal tube piece at the lower end at the seal tube piece of the inner plug. Provide a first check valve that opens and closes the opening, disabling the backflow of contents and the inflow of outside air into the container body, and through the outer peripheral periphery piece from the approximate center part height position of the flow tube cylinder piece, Having a flow path forming portion made of a soft synthetic resin with a second check valve that is diametrically expanded downward and the outer peripheral surface of the lower end portion is in close contact with the inner peripheral surface of the extraction cylinder;
In a state where the container body, the inner plug, the cap body, and the flow path forming portion are assembled, the upper and lower through holes and the intake hole are connected in a sealed state via the second check valve,
It is in.
[0010]
In the said structure of Claim 1, a container main body, an inner stopper, a cap body, and a flow-path formation part are assembled | attached and fixed, and an exterior cylinder closely fits on the upper part of a container main body, A state where the flow path cylinder piece of the flow path forming part that forms the flow path of the contents from the opening to the spout is closely fitted to the seal cylinder piece of the inner plug at the lower end and the upper seal cylinder piece of the cap body at the upper end In the portion of the container body where the air intake hole is formed, the second check valve allows air to enter the gap between the outer layer and the inner layer, and the flow from the gap to the outside of the container body is impossible. The hole and the intake hole are connected in a sealed state.
[0011]
After the contents are poured out by pressing the body part of the container body, the pressing is stopped, and when the pressing is released, the contents stop being poured out, and the outer layer begins to be restored to its original shape by elastic recovery force. The function of the first check valve provided can prevent the backflow of contents into the container body and the entry of external air.
[0012]
At this time, since the inner layer remains in a reduced volume deformed state, external air is introduced from the upper and lower through holes, and the second check valve is deformed inward, while the outer hole and the inner layer are As a result, the inner layer remains deflated and deformed, and the outer layer is restored to its original shape.
[0013]
When pressing again to pour the contents from the state where the outer layer has been restored to its original shape, the connection between the upper and lower through holes and the intake hole is blocked by the check function of the check valve Then, pressure is applied to the contents, and the contents are poured out from the container main body, from the container body through the flow path forming body by opening the first check valve.
[0014]
As described above, the external air does not enter the container body, and the content is not touched to the outside air by entering the gap between the outer layer and the inner layer. No container can be provided.
[0015]
Here, the first check valve and the second check valve need to be formed of a soft synthetic resin or a rubber-like material in order to exhibit the sealing function. The flow path forming portion which is one member has the both check valves, and the both check valves are formed integrally without separately forming, so that productivity can be improved.
[0016]
Furthermore, if the check valve is molded as a separate body, it becomes a fine member and the assembly process becomes complicated and takes time.In the invention of claim 1, the check valve is configured to be integrated with the flow tube piece. By fitting the lower end portion of the flow path cylinder piece into the seal cylinder piece and the upper end part into the upper seal cylinder piece, both check valves can be easily incorporated into the container, while maintaining high productivity while maintaining the high productivity. Can be provided.
[0017]
According to a second aspect of the present invention, in the first aspect of the invention, the top plate portion of the pour tube of the cap body is used as a separate top wall portion and is tightly assembled and fixed to the upper end portion of the pour tube. It is in the configuration.
[0018]
According to the above-described configuration of the second aspect, the cap body is divided into two members and molded, whereby a fine shape can be molded while maintaining higher productivity.
[0019]
Whether the cap body is formed integrally or divided into two members can be selected in consideration of the shape and formability of the cap body.
[0020]
The means of the invention described in claim 3 is that, in the invention described in claim 1 or 2, the contents are eye drops.
[0021]
Since it is possible to prevent foreign air such as germs or foreign substances from entering the container body, it is possible to provide a drop container for eye drops that is excellent in hygiene and safety.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 to 4 show an embodiment of a dropping container according to the present invention, which is formed of a container main body 1, an inner stopper 11, a cap body 20, and a flow path forming portion 41. In this embodiment, the cap body 20 is composed of two members, a top plate portion 31 that forms a top plate 32 portion that opens the spout 34 and an exterior portion 21 that has an extraction tube 24 standing on top of the exterior tube 22. Composed.
[0023]
The container main body 1 is a laminated container formed of an elastic deformation by pressing and an outer layer 2 capable of recovering the deformation, and an inner layer 3 laminated on the outer layer 2 so as to be peeled off. A short cylindrical mouth 4 is formed and is formed by a blow molding method.
[0024]
The mouth portion 4 of the container body 1 is formed with a pair of air intake holes 5 by removing the outer layer 2 in a disk shape at an axially symmetric position with respect to the central axis, and will be described later on the outer peripheral surface of the upper end portion. A plurality of vertical grooves 9 into which the vertical ridges 26 attached to the inner surface of the outer cylinder 22 are fitted are engraved.
[0025]
The inner plug 11 is composed of a top-like short circular fitting cylinder piece 12 which is tightly fitted into the mouth portion 4 of the container body 1, and an opening 14 is formed in the central portion of the top wall 13 of the fitting cylinder piece 12. In addition, a seal cylinder piece 16 in which a lower end portion of a flow path cylinder piece 42, which will be described later, is closely fitted, is erected at a position slightly apart from the peripheral edge of the opening portion 14, and the outer cylinder shape is formed from the upper end of the insertion cylinder piece 12 Further, the flange piece 17 is connected to the end of the flange piece 17, and a locking cylinder piece 18 is provided on the upper end of the flange piece 17.
[0026]
The exterior part 21 of the cap body 20 has a cylindrical extraction cylinder 24 standing on a cylindrical exterior cylinder 22 via an inner collar-shaped shoulder piece 25.
[0027]
A seal strip 23 is attached to the inner peripheral surface of the lower end portion of the outer tube 22 so as to be in close contact with the shoulder portion 8 of the container body 1 and sealed, and the container main body is disposed on the upper end portion of the inner peripheral surface. A plurality of vertical ridges 26 that are fitted into a plurality of vertical grooves 9 carved in one mouth portion 4 are provided, and the upper end portion of the vertical ridges 26 is connected to the inner plug 11. A locking projection piece 26a is provided for locking to a locking peripheral piece 18a attached to the stopper tube piece 18. Note that an O-ring made of a soft material can be used in place of the seal periphery 23.
[0028]
The top plate portion 31 of the cap body 20 has a top plate insertion cylinder 36 having a short cylindrical shape, and a spout 34 is formed at the center of the top plate 32 of the top plate insertion cylinder 36. A dripping cylinder piece 37 having a cylindrical shape with an upper end opening as a dripping port 37a is erected, and the dripping cylinder piece 37 is extended downward, and a cylindrical drooping cylinder piece 38 is suspended, and this dripping cylinder piece An upper seal cylinder piece 33 in which an upper end portion of a flow path cylinder piece 42, which will be described later, is closely fitted is hung from outside 38, and a flange peripheral piece whose lower end surface abuts on the upper end surface of the extraction cylinder piece 24 at the periphery. 36a, and a vertical through hole 35 for introducing external air into the extraction cylinder 24 is formed in a portion of the top plate 32 between the upper seal cylinder piece 33 and the fitting cylinder piece 36.
[0029]
The flow path forming part 41 has a cylindrical flow path cylinder piece 42 having a lower end portion closely fitted into the seal cylinder piece 16 of the inner plug 11 and an upper end portion closely fitted to the upper seal cylinder piece 33 of the top plate part 31. A first check valve 45 that opens and closes the opening 14 of the inner plug 11 is provided at the lower end of the path tube piece 42 so as to prevent the backflow of contents into the container body 1 and the inflow of outside air. Of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end. A substantially cylindrical second check valve 44 is provided so that the outer peripheral surface closely contacts the inner peripheral surface of the dispensing cylinder 24.
[0030]
Here, the first check valve 45 can take various structures, but in this embodiment, the disc-like valve body 45a is connected to the lower end portion of the inner peripheral surface of the flow tube piece 42 via the connecting piece 45b. The connecting piece 45b is used as a base end and can be swung upward, and functions as a check valve.
[0031]
In order to perform the functions as the first check valve 45 and the second check valve 44, and to closely fit the seal cylinder piece 16 and the upper seal cylinder piece 33 so as to sufficiently exhibit the seal function, the flow path forming portion 41 is provided. It is made of a soft synthetic resin, and particularly the lower end portion of the second check valve 44 is formed thin to facilitate deformation in the inward direction.
[0032]
Next, an embodiment of the state in which the container main body 1, the inner plug 11, the cap body 20 (the exterior portion 21, the top plate portion 31) and the flow path forming portion 41 are assembled and the state of use of the container will be described.
[0033]
The inner stopper 11 is assembled and fixed to the container main body 1 in a state where the fitting cylinder piece 12 is closely fitted in the mouth portion 4 and the lower surface of the flange piece 17 is in contact with the upper end surface of the mouth portion 4. The airtightness in the container body 1 is maintained together with the valve 45.
[0034]
The exterior portion 21 is fitted and fixed to the container body 1 by fitting the exterior tube 22 to the upper portion of the container body 1, and at this time, a seal peripheral strip 23 formed on the inner peripheral surface of the lower end portion of the exterior tube 22. Is in close contact with the shoulder portion 8 of the container body 1 to ensure a sealing property.
[0035]
Further, a plurality of vertical ridges 26 attached to the outer cylinder 22 are fitted into the vertical grooves 9 provided in the mouth portion 4, and the locking pieces 27 are locked to the locking step portions 4 a of the mouth portion 4. In addition, it is possible to achieve a firm and fixed fixing to the container body 1 so that it cannot be removed upward.
[0036]
The top plate portion 31 is assembled and fixed to the dispensing cylinder 24 with the top plate fitting cylinder piece 36 fitted into the dispensing cylinder 24 and the lower surface of the flange peripheral piece 36 a in contact with the upper end surface of the dispensing cylinder 24.
[0037]
The flow path forming portion 41 is a state in which the lower end portion of the flow path cylinder piece 42 is closely fitted into the seal cylinder piece 16 of the inner plug 11 and the upper end portion is closely fitted into the gap between the hanging cylinder piece 38 and the upper seal cylinder piece 33. The valve body 45a of the first check valve 45 is positioned with its lower surface in contact with the upper surface of the top wall 13 so as to close the opening 14 of the inner plug 11, and the second check valve 44 has a lower end thereof. The portion is positioned in close contact with the inner surface of the dispensing cylinder 24.
[0038]
In the assembly of the embodiment of the dropping container of the present invention described above, the flow path forming portion 41 is assembled and fixed to the top plate portion 31 by fitting the upper end portion of the flow channel cylinder piece 42 into the upper seal cylinder piece 33. The top plate portion 31 is assembled and fixed to the exterior portion 21 by fitting the top plate insertion tube 36 into the extraction tube 24, and the exterior portion 21 is fixed to the upper portion of the container body 1 in which the inner tube 11 is assembled and fixed. In this assembly process, the first check valve 45 and the second check valve 44 connected to the flow path cylinder piece 42 are properly placed in the container without any need for alignment. The container can be provided while maintaining high productivity.
[0039]
Normally, when the dripping container of this embodiment is not used, the overcap 29 is screwed and assembled to the dispensing cylinder 24 as shown in FIG.
[0040]
When the body part of the container body 1 is pressed with the fingertip from the above assembled state, the first check valve 45 is lifted to the upper part with the connecting piece 45b as a fulcrum, and the contents are poured out from the dropping port 37a at the tip. However, together with the dropping cylinder piece 37, the flow path cylinder piece 42 forms a flow path for the contents to flow from the opening 14 of the inner plug 11 to the dropping opening 37a while maintaining the sealing performance.
[0041]
When the pressure is released from the above-mentioned pouring state, the pouring of the contents stops, the outer layer 2 starts to be restored to its original shape by the elastic recovery force, and the function of the first check valve 45 provided in the inner plug 11 allows the container to The backflow of the contents to the inside of the main body 1 and the entry of external air can be prevented.
[0042]
At this time, since the inner layer 3 remains in the reduced volume deformed state, external air is introduced from the upper and lower through holes 35, and the second check valve 44 is deformed inward, from the intake hole 5, The inner layer 3 is introduced into the gap 6 between the outer shell layer 2 and the inner layer 3, and as a result, the inner layer 3 is restored to the original shape of the outer layer 2 while remaining deformed. In FIG. 4, an arrow indicated by a broken line indicates an approach path of external air from the upper and lower through holes 35 through the intake hole 5 to the gap 6 between the outer layer 2 and the inner layer 3.
[0043]
When the outer layer 2 is restored to its original shape and pressed again to pour out the contents, the non-return function of the second check valve 44 connects the upper and lower through holes 35 and the intake holes 5. Therefore, the air in the gap 6 between the outer layer 2 and the inner layer 3 is sealed in the container body 1, pressure is applied to the contents, and the contents open the first check valve 45 to open the container body. 1 is poured out from the dripping port 37a through the channel tube piece 42.
[0044]
The dripping container of the present invention is not limited to a small container such as an eye drop container, but can be used as various squeeze containers taking advantage of the feature that a check valve can be formed while maintaining high productivity. It can be done.
[0045]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
According to the first aspect of the present invention, it is possible to provide a sanitary excellent dripping container that does not impair external air into the container body without impairing the dispensing operability by pressing.
[0046]
The flow path forming part, which is one member, has a function of the first and second check valves, and it is possible to mold both functional valves integrally without molding them separately. Can be improved.
[0047]
In addition, by fitting the lower end of the channel cylinder piece into the seal cylinder piece and the upper end part into the upper seal cylinder piece, both check valves can be easily incorporated into the container while maintaining high productivity. A container having two check valves can be provided.
[0048]
In the invention according to the second aspect, by dividing the cap body into two members and molding, a fine shape can be molded while maintaining higher productivity.
[0049]
The invention according to claim 3 provides a drop container for eye drops that is excellent in hygiene and safety because foreign matter such as external air germs or dust can be prevented from entering the container body. can do.
[Brief description of the drawings]
FIG. 1 is a half longitudinal front view showing a state in which an overcap is placed on an embodiment of a dropping container of the present invention.
FIG. 2 is a plan view showing one embodiment of the dropping container of the present invention.
FIG. 3 is a longitudinal sectional view showing an enlarged main part of the portion shown in the longitudinal sectional view of FIG. 1;
4 is an explanatory view showing an external air entry passage in FIG. 3; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1; Container body 2; Outer layer 3; Inner layer 4; Mouth part 4a; Locking step part 5; Air intake hole 6; Gap 7; Body part 8; Shoulder part 9; Vertical groove 11; Top wall 14; Opening 16; Seal cylinder piece 17; Flange piece 18; Locking cylinder piece 18a; Locking peripheral piece 20; Cap body 21; Exterior part 22; Exterior cylinder 23; Shoulder piece 26; vertical protrusion 26a; locking protrusion 27; locking piece 29; overcap 31; top plate portion 32; top plate 33; top seal tube piece 34; spout 35; 36a; Flange peripheral piece 37; Drip cylinder piece 37a; Drip port 38; Dripping cylinder piece 41; Flow path forming part 42; Flow path cylinder piece 43; Outer peripheral piece 44; Second check valve 45; Valve 45a; valve body 45b; connecting piece

Claims (3)

A container in which an inner layer (3) that can be peeled from the outer layer (2) is laminated on the inner surface of the outer layer (2), and an intake hole (5) is formed in the outer layer (2) portion of the cylindrical mouth portion (4) The main body (1) has a cylindrical fitting tube piece (12) with a top, and an opening (14) is formed at the center of the top wall (13) of the fitting tube piece (12). A seal cylinder piece (16) is erected in the vicinity of the periphery of (14), and the fitting cylinder piece (12) is tightly fitted into the mouth portion (4) to be assembled and fixed to the container body (1). The stopper (11) has a cylindrical outer cylinder (22) that covers the upper part of the container body (1) in a state where the inner peripheral surface of the lower end portion is in close contact with the container body (1). A spout (34) is formed in the center of the upper end of the outer tube (22), and a cylindrical drooping cylinder piece (37) is suspended outside the spout (34) . A cylindrical top seal cylinder piece (33) is hung on the outside, and has a top plate (32) having upper and lower through holes (35) formed outside the upper seal cylinder piece (33). Outlet (24) Standing the cap body (20), the lower end portion to the tubular sealing member (16) in said plug (11), hanging tube piece of the cap body upper portion (21) (38) and the upper tubular sealing pieces ( 33) has a cylindrical flow channel piece (42) that fits tightly into the gap , and the back of the contents and the inflow of outside air into the container body (1) at the lower end of the flow channel tube piece (42) The first check valve (45) for opening and closing the opening (14) is provided, and the lower part of the flow path cylinder piece (42) is lowered from the height position through the outer flange peripheral piece (43). A soft synthetic resin flow path forming portion having a second check valve (44) suspended from the outer peripheral surface of the lower end portion and in close contact with the inner peripheral surface of the extraction tube (24). (41), in the state where the container body (1), the inner plug (11), the cap body (20), and the flow path forming portion (41) are assembled, the upper and lower through holes (35) and the intake holes A dripping container in which (5) is connected in a sealed state via a second check valve (44).
The top plate (32) portion of the pouring cylinder (24) of the cap body (20) is configured as a separate top wall (31) and assembled and fixed to the upper end of the pouring cylinder (24). Item 2. The dropping container according to Item 1. The dropping container according to claim 1 or 2, wherein the contents are eye drops.

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