JP4091350B2 - Liquid dripping container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid drop-type container for storing a solution such as an eye drop solution, a contact lens cleaning liquid, a disinfectant liquid, and the like. The present invention relates to a liquid dropping container having a structure for changing an internal volume. Furthermore, in such a dripping container, it is related with the dripping type container which has a cap with a tamper-evident prevention which can be judged clearly from the external appearance.
[0002]
[Prior art]
For example, solutions used for cleaning and disinfecting contact lenses are solutions such as those that remove lipids attached to the lens surface, those that remove dirt such as proteins, and those that disinfect lenses depending on the purpose of use. It has been developed to demonstrate each function. Some of these working fluids are desirably used by mixing their used amounts at a certain ratio in order to fully develop the function of the fluid. For example, an enzyme solution for removing proteins attached to the lens. Enzymes are dissolved in organic liquids (for example, glycerin, propylene glycol, etc.) and mixed solutions of boric acid compounds and water when circulating as solutions due to problems with stability in the solution state. It is used with increased enzyme activity by diluting it into a cleaning solution or disinfecting solution for contact lenses. At this time, if the dilution rate is too high, the substantial enzyme concentration is lowered to affect the washing effect. If the dilution rate is too low, the osmotic pressure of the mixed solution is affected by the organic liquid used for enzyme stabilization. Since there is a problem that the contact lens size and the base curve are affected, there is a problem that the ratio is required to be substantially constant when the liquid enzyme is dropped and mixed.
[0003]
Such an enzyme solution is usually stored in a dedicated container, and a necessary amount is taken out from the container at the time of use. The solution container is housed in an elastically deformable container made of a flexible material, and the user presses and deforms the side surface of the container so that the container is ejected or dropped from the outlet. Things can be considered. However, when taking out from such a container, there is a variation in the amount taken out due to the difference in the pressing force of the user. To find out how to use the solution to the maximum extent, There is a problem that it is necessary for the user to adjust the amount of pressing deformation, and that the operation is difficult.
[0004]
Therefore, for example, (1) the bottom of the rigid material container body disclosed in Japanese Utility Model Publication No. 8-9708 previously proposed by the present inventor is closed with a flexible elastic material, and the deformation amount of the elastic material is determined on the container side. (2) The bottom of the container body is closed with an elastic diaphragm plate, which is disclosed in Japanese Utility Model Laid-Open No. 63-46383 and Japanese Patent Laid-Open No. 8-301331. The pressure force is transmitted to the diaphragm plate vertically through the pressing piece provided on the outside of the container, and the amount of contents dropped is adjusted. (3) The bottom of the container body disclosed in JP-A-10-203574 The amount of dripping of the contents is made constant with the height of the push button protruding from the guide cap kept constant by pressing it with a push button covered with a push rubber and passing through the guide cap. Proposal, such as those adjustment has been made.
[0005]
According to the containers (1) to (3), a certain amount of dripping is surely ensured, and the liquid contained in the container is used as intended by the supplier. However, for (1), since the elastic material and the rigid material cannot be bonded as they are, the rigid material is required as a separate part for covering the elastic material and fixing it to the container body. There was a problem of volatilization of the solution. As for (2), in addition to the large number of parts as described above and the sealing property of the container body, the connecting part between the pressing piece and the container fixing part is thin and thin so as to bend frequently. The problem of being easily deformable by use, the problem (3) is the same as the problems (1) and (2) above, and the number of parts is much larger than the above containers, which may lead to an increase in the cost of the container. All of them had room for improvement.
[0006]
On the other hand, compared with the above publications, (4) a part of the rigid material constituting the container main body disclosed in Japanese Utility Model Publication No. 6-10163, which can reduce the number of parts as much as possible, is made extremely thin and elastic. There is a dripping container that has the property. This container can solve the problems of the hermeticity of the container disclosed in (1) to (3), the concentration change due to the volatilization of the solution by not using an elastic material, and the reduction in the number of parts. However, since the specific solution for making the amount of dripping constant is determined by the shape of the dripping port and the surface tension of the solution, for example, whether the container at the time of dripping is grasped vertically or obliquely Therefore, a difference occurs in the relationship of the surface tension between the dripping port and the droplet, and the probability that the amount of dripping varies with each use will appear. In addition, since the amount of change in the volume of the container due to the pressing of the dropping operation unit is not constant, there is a problem in that there are individual differences in the dropping amount.
[0007]
Further, as to the opening of the dropping container, measures for preventing unauthorized opening have been an important issue, and as a proposal for that, a so-called pill disclosed in JP-A-7-309358, JP-A-2000-344265, JP-A-2001-180708, etc. There is an apparatus for preventing unauthorized opening of a cap having a fur-proof characteristic. These tamper-evident preventive devices indicate that the merchandise has been tampered with depending on whether or not the cap and the detachable ring are cut. The indication itself is sufficient, but the separated ring is not stable at the neck of the container, which impairs the aesthetics of the container as a whole.
[0008]
[Problems to be solved by the invention]
Here, the present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that a predetermined solution (for example, eye drops, contact lens solution, etc.) contained therein is constant. An object of the present invention is to provide a liquid dripping container that can be dripped in a large amount, can reduce the number of parts constituting the container, and can improve the hermeticity of the container.
Still another object of the present invention is to provide a dripping container having a tamper-evident prevention mechanism which is usually a problem in such a dripping container.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention proposes a liquid dropping container shown below. That is, (a) a container body having a dripping port for dripping a predetermined solution accommodated therein, and (b) opening and closing the dripping port of the container body detachably attached to the container body. And (c) the container main body provided in a state of constituting a part of the container wall of the container main body, and deformed by the pressing operation and deformed by restoring the original shape based on the elasticity of the constituent material. A dropping operation member having a dropping operation unit that reversibly increases or decreases the internal volume thereof, and a pressing piece that is configured integrally with the dropping operation unit and that allows the pressing operation to be performed in the vertical direction with respect to the operation unit; , A liquid dropping container.
[0010]
It is preferable that the material of the dropping operation member is made of the same material in order to improve the adhesion with the container body. After the container body is molded, it is filled with the internal solution and sealed with the dropping operation member. However, since the internal solution is unlikely to leak except for the defective adhesive portion, both materials are identical. This is because it is advantageous for bonding.
[0011]
In addition, a volume change restricting means for restricting the amount of change in the internal volume due to the deformation of the dropping operation unit is provided between the pressing piece integrally formed with the dropping operation unit. It is formed as a convex part on at least one of the part side or the pressing piece side, and it is provided with two or more places, or an annular stopper may be provided between the dropping operation part and the pressing piece. it can.
[0012]
When the dripping port of the container main body is sealed, a spike protrudes from the inner bottom portion of the cap member so that a hole can be made in the sealing portion, and by screwing the cap into the container main body, The seal part is opened and a dripping port is formed. In this case, it is preferable to have a cylindrical stopper between the cap member and the container main body in order to prevent inadvertent opening of the seal at the distribution stage. The cylindrical stopper connected thinly at the opening end of the cap member has an annular ridge provided around the end of the threaded screw portion with the cap of the container body, so that one end surface of the cylindrical stopper becomes a ridge. By being locked, screwing of the cap before opening is controlled. Further, the forcible screwing at the time of opening advances the cylindrical stopper beyond the protruding portion, and the other end surface of the cylindrical stopper engages with the protruding portion of the container body, and the spike on the inner bottom portion of the cap member. Is configured to open the dripping port of the container body. Subsequently, when the cap member is screwed out to remove the cap, the thin continuous portion with the cylindrical stopper is broken so that the cylindrical stopper remains in the container body.
[0013]
Since the conventional general dropping operation part is made of a soft material (for example, silicon rubber), it is difficult to directly bond the container body (for example, polypropylene) and the dropping operation part with a certain degree of adhesive strength. Usually, these fixing methods include a fixing member made of the same type of material as the container body, and a drop operation section made of the soft material between the container body and ultrasonic waves while holding the fixing member to the container body side. It welds by etc. Therefore, a fixing member is absolutely necessary for fixing the conventional dropping operation part, and the cost of the container due to an increase in the number of parts, separation of the dropping operation part due to insufficient adhesive pressure between them, water to be stored inside the container, etc. There has been a problem that the soft material or the pressure-clamping portion permeates and volatilizes to change the concentration of content components. In the present invention, the material of the dropping operation portion is made of a material having good adhesion to the main body, preferably the same kind of material, and the use of the fixing member is eliminated, so that the number of parts can be reduced. For example, if the material of the container body is selected from a hard resin such as polycarbonate, polysulfone, polyacryl, polypropylene, polystyrene, ethylene vinyl acetate, nylon, etc., the resin of the dropping operation part is also made of the same material as described above. It is preferable. If the same kind of material is used, ultrasonic bonding with the container body is prepared, and a fixing member which is a separate component is not required to bond the two, so the number of components can be reduced. Moreover, since these hard resin materials have less water permeability than soft materials, they can be made into a container in which the concentration of the containing solution does not change.
[0014]
Here, the conventional dropping operation part is made of a soft material for the purpose of facilitating repeated deformation of the part repeatedly and continuously. In the present invention, the dropping operation part is thin and dome-shaped. Even if it is not a soft material, the volume of the container can be changed. However, as it is not enough to enable a certain amount of dripping, which is an important function as a liquid dripping container, the present invention has a pressing piece connected to the dropping operation unit and having an integral structure. ing. As an integrated structure, the dome-shaped apex portion of the dropping operation part is connected to the center part of the disk-shaped pressing piece, and the user cannot directly touch the dropping operation part with a finger or the like. However, the whole dropping operation part can be uniformly pressed from the dome-shaped apex part by pressing the pressing piece. Compared to direct pressing, the pressing area is increased or decreased according to the thickness of the user's finger, etc., so that it was not possible to secure a uniform drop amount. In addition, since the dripping operation part is made of thin hard resin, it cannot be restored quickly due to resin fatigue due to excessive deformation, or it is pressed too hard to bend around the base of the thin part and lose its restoring force. Although it was also predicted, the use of the pressing piece of the present invention made it impossible to apply an excessive force to the dropping operation portion, and thus the above-mentioned problem could be solved.
[0015]
Although it is preferable for the pressing piece to use the same resin as that of the dropping operation unit in terms of an integral structure of both, it is not necessarily that the pressing piece should be formed using different materials. If the connection between the two has durability in use, it is better to use a certain amount of flexible material for the dropping operation part, and the pressing piece will be uniformly deformed with respect to the dropping operation part if a rigid material is used. It is because it can be made. The shape of the pressing piece is preferably a circular flat plate. This is because when the container body is cylindrical, if the container body is circular, the container as a whole is well-organized, and the container can be stood with the pressing piece as the bottom surface by making it flat. Further, a polygonal flat plate shape such as a triangle may be used if the container main body has a triangular prism shape in accordance with the shape of the container main body. If a container main body is a polygonal column shape, the effect which prevents rolling on a desk can be given. In addition, even if the container cannot be turned upside down with the pressing piece as the bottom surface, the pressing piece is hemispherical, polygonal pyramid such as a triangular pyramid, polygonal column such as a cubic body, or uneven pattern on the surface in consideration of the design surface. Or you may attach decoration such as sculpture. Such a change on the pressing surface side of the pressing piece may be any shape as long as the dome shape of the dropping operation unit can be pressed. On the other hand, the dropping operation part side surface of the pressing piece is desirably a flat surface in order to make the pressing action to the dropping operation part uniform.
[0016]
The dropping operation member in which the pressing piece and the dropping operation unit are integrated can be molded by conventional molding methods such as injection molding and compression molding. These can be molded from the beginning or bonded individually. And may be integrated. However, since the joint part of both is a contact part between the dome apex part of the dropping operation part and the pressing piece, it is a condition that the adhesion is durable for normal use when individually molded. .
[0017]
In order to control the dropping amount more reliably, it is preferable that a volume change restricting means for the main body container is provided between the pressing piece and the dropping operation unit. In dropping, the pressing piece is pressed to crush from the dome-shaped apex portion of the dropping operation unit to reduce the volume in the container, and a predetermined amount of the stored solution is taken out from the dropping port. This pressing operation can cause a constant volume change regardless of the size of the finger by applying a pressing force to the dropping operation unit in a plane by adopting the pressing piece. Therefore, by providing an appropriate convex part between the pressing piece and the dropping operation part so as to have a certain distance between them, the deformation amount of the dropping operation part can be defined. Depending on the contents, various settings can be made and the dropping amount can be adjusted more accurately. Of course, even if such a restricting means is not provided, there is a limit to the pressure deformation (for example, when the pressing piece is larger than the outer shape of the container body, the movement of the pressing piece is limited by the outer shape of the container, If it is small, there is a possibility that the pressing piece is pushed into the inside of the container, but even in that case, the limit is the position where the dome shape of the dropping operation part is reversed) However, by setting the height of the convex portion in various ways, the stroke of the pressing piece can be adjusted and various applications can be made according to the usage. Furthermore, as another aspect of the volume change restricting means, an annular stopper can be provided between the dropping operation portion and the pressing piece. The stopper has a through hole in the center, and when a pressing piece protruding through the through hole is pressed during use, the finger is restricted in movement by the stopper, so that the amount of dripping is constant.
[0018]
About the dripping port of a container, it may be sealed so that it can be opened with thin resin etc. in the case where it is opened from the beginning, and a distribution | circulation stage. As an advantage in the case where the dropping port is formed from the beginning, various shapes can be given so that there is a liquid draining effect from the mouth portion during the dropping operation of the inner solution. A tapered surface having a large diameter toward the tip is formed on the inner peripheral surface of the tip of the mouth, and in order to prevent liquid dripping, a larger diameter than the diameter of the dredger that constitutes the dripping opening is formed. By forming a portion and forming a space around the dripping bottle behind the burrs, it is possible to perform excellent liquid draining without the internal solution remaining at the tip of the dripping port. Of course, even if the dripping port is sealed so that it can be opened, it can be a dripping port having a tapered surface or a burred portion as described above, but the cap inner surface spike penetrates the dripping port. Although the sealed thin-walled resin cannot be completely removed even though the holes can be opened, the pressure of the content liquid near the through-holes when the inner solution is dropped due to the influence of the remaining resin pieces. Is added, and the flow of the solution is disturbed. Therefore, the effect of adjusting the size of the droplet to be constant is more excellent when the dropping port is formed from the beginning. However, in a container in which a dripping port is formed from the beginning, an elastic packing (for example, silicon rubber) is provided on the inner surface of the cap so as to contact and close the dripping port in order to improve the sealing performance of the container in the distribution stage. Compared to this, a container having a dripping port sealed with a thin-walled resin that can be opened until use can maintain sufficient hermeticity even without a cap. In addition, even if there is no packing or the like during the period of use after passing through the dripping port, the spike portion plays a role of maintaining the hermeticity of the container and can sufficiently cope with short-term storage.
[0019]
By the way, in such a container, it is desired to have some mechanism and structure in order to make the user recognize whether or not the container has been tampered with. As this tamper-evident recognition mechanism, a simple one may be one in which the entire container is covered with a shrink film, or a cylindrical stopper is formed between the container body and the cap member, and the cylindrical stopper is a resin that is connected to the cap in a breakable manner. There is a structure in which when the screw is screwed in the direction to open the cap, it does not follow the cap but remains at the mouth of the container main body and is broken (generally referred to as a pilfer proof characteristic). In the present invention, when the dropping port is sealed with a thin-walled resin that can be opened, it is preferable to have an unauthorized opening recognition structure as described below. When the dripping port is sealed, a through hole is formed by the spike in the cap in order to open it. In that case, the cap is screwed toward the container body. Then, the spike in the cap reaches the seal portion, and by further proceeding, the thin portion resin of the seal portion is opened. At that time, the cylindrical stopper between the container main body and the cap member is pushed down by the screwing of the cap member. An end of the cap mounting screw portion of the container body is provided with an annular ridge, and the end surface of the cylindrical stopper is locked to the ridge, which prevents the cap from being screwed in the tightening direction. When the cap is forcibly tightened, the end face of the cylindrical stopper moves over the ridge so as to be pushed by the cap. A concave groove is formed on the inner peripheral surface of the cylindrical stopper. When the cylindrical stopper is pushed to a position where the cap does not advance, the protruding portion and the concave groove are fitted and fixed at that position. Accordingly, whether or not the container has been opened can be recognized by the user depending on the position of the cylindrical stopper. Further, since the cylindrical stopper prevents the cap from being unintentionally screwed, it is possible to prevent erroneous opening at the distribution stage.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, in order to clarify the present invention more specifically, the dropping container according to the present invention will be described in detail with reference to the configuration drawings.
[0021]
FIG. 1 shows an example of a cross-sectional view of a dropping container according to the present invention. As is clear from this figure, in the dropping container 1 of the present invention, the opening end 21 of the cylindrical container body 2 is closed by the dropping operation part 3 that reversibly changes the volume of the container body, and the other end is the outer periphery. Further, a neck portion 23 having a screw portion 22 and a dripping port 25 sealed with a thin seal 24 are formed. And the cap 10 which has the screw part 12 corresponding to this screw part 22 of this other end in an inner peripheral wall, and has the spike 11 in the center of an inner bottom part is screwed. When the user rotates the cap 10, the seal of the dropping port is opened, and the predetermined liquid stored in the container can be dropped. In addition, the dropping operation unit 3 is provided with a pressing piece 4 so as to be easily pressed in the vertical direction by being coupled thereto.
[0022]
The cylindrical container body 2 and the dropping operation unit 3 are formed of the same resin material so that ultrasonic welding is easy. For example, polyethylene or polypropylene is formed by general injection molding or heat compression molding so as to be inexpensive and easy to handle. Further, it is made of a thermoplastic plastic appropriately selected from ethylene vinyl acetate, polystyrene, polycarbonate, nylon, acrylic and the like. After the molding, a predetermined solution is filled from the open end 21 of the cylindrical container body, the cover is covered by the dropping operation part 3, and the peripheral part where both are in contact is welded and sealed with ultrasonic waves. The peripheral part of the dripping operation part is joined by melting the container body and the resin, so it is sealed much more than the case where the conventional soft material is sandwiched and the fixing member and the body container are crimped. This improves the performance and prevents leakage of the stored liquid. The cylindrical container body 2 is preferably made of a resin having a transparency that allows the user to visually recognize the amount of the remaining liquid during use. However, the cylindrical container body 2 does not have to be colorless and transparent and is colored or has a trade name, etc. And various designs may be given.
[0023]
Since the container main body is gripped during handling during the dropping operation, the container main body is deformed by the gripping pressure unless it is moderately hard, and it becomes difficult to make the amount of the internal solution dripped constant. On the other hand, since the dropping operation unit reversibly changes the internal volume of the container through the pressing piece, it must have an elastic force. In addition, it is preferable that both the resins be the same in order to ultrasonically weld the container body and the dropping operation section as described above. Therefore, the deformation part of the dropping operation part is thin and formed into a dome shape so that the operation part can be flexibly deformed even if the resin itself is hard. If the dome shape of the dropping operation part is a so-called hemispherical shape, the deformation during operation is too great, and the resin fatigue due to frequent operations tends to cause problems with the restoring force to the original shape, and conversely it is almost flat In this case, the volume deformed by the press is too small to allow the inner solution to be dropped, and therefore it is desirable that the angle α in the cross-sectional view be in the range of 5 to 45 °.
[0024]
The dropping operation portion has a stepped cylindrical wall 31 extending downward from the dome-shaped peripheral end portion, and is fitted to the stepped surface formed around the opening end portion 21 of the portion and the container body. In combination, ultrasonic welding is performed as described above. Each shape of the welded portion is formed into various shapes on the assumption that each resin becomes more liquid-tight, and such a step or the like is not necessarily required. In the case where a soft material having rubber elasticity is press-fitted between the resins, it is essential to improve the adhesive force between them, but in the present invention example, it is sealed because it is not sandwiched between the dropping operation member and the container body. As described above, there is no factor that becomes a hindrance to the force, and the liquid-tightness is advantageously achieved. As a result, an excellent sense of unity is imparted to both. In addition, since there is nothing to be press-fitted between the two, it is possible to provide a wide bonding area between the container body and the dropping operation member, so the thickness of the container body can be reduced, and the entire container can be made compact and slim. Can be advantageously achieved.
[0025]
Although the pressing piece 4 is coupled to the dropping operation unit 3, the coupling mode may be a configuration that forms part of the dropping operation unit as shown in FIG. A structure (for example, shown in FIG. 2) in which flat surfaces are joined so as to be in contact with each other. Conventionally, when the dropping operation unit is directly pressed, the volume of the dropping operation unit that deforms when pressed depends on the thickness of the finger, the shape of the fingertip, etc., and as a result, the predetermined amount intended by the supplier There was a difference in the amount of dripping liquid. In the present invention, by providing a pressing piece as shown in FIG. 1 integrally with the dropping operation section, a dropping amount that does not cause an individual difference by a consumer is made possible. As described above, the dropping operation unit can be reversibly deformed when dropping, and when a pressing force is applied to the pressing piece formed integrally therewith, the pressing piece pushes down the convex surface as a single plate. Thus, the volume to be deformed is determined by the pressure applied when pressing, and does not depend on the shape of the fingertip, so that a constant drop amount can be obtained. As shown in the figure, the side of the pressing piece that comes into contact with the fingertip is a substantially flat surface (there is a flat in the center, but it is generally flat), and it is possible to invert the container with the pressing piece down. Even without a cap in the middle, it is possible to prevent the dripping port from becoming dirty and to prevent leakage of the content liquid.
[0026]
Further, in order to define the deformation amount due to the pressing operation of the dropping operation unit, the volume change restricting means 5 for controlling the deformation amount of the inner volume of the container body is provided between the pressing piece and the dropping operation unit. Is preferred. FIG. 1 shows that the pressing piece 4 is provided in a convex shape at two peripheral portions. That is, when the user presses the pressing piece 4, the dropping operation unit 3 is pushed downward, but at this time, the distance between the peripheral edge of the pressing piece 4 and the dropping operation unit 3 is reduced and is provided on the pressing piece 4. The volume change restricting means 5 cannot contact the dropping operation unit 3 and be pushed down further. If the volume of the container body is reduced by the change of the dropping operation unit at this time and the amount of the solution in the container poured out is a predetermined dropping amount, a constant amount of dropping is always secured. If the protrusion height of the volume change restricting means 5 is adjusted, the amount of extraction can be increased or decreased by a single pressing operation. As described above, the operation of making the dropping amount constant is very easy to control and take out the solution amount in a processing method such as diluting and dropping a liquid enzyme agent having a protein removing effect in a contact lens cleaning agent. It becomes. Moreover, even if it is used for taking out a solution that does not require such control, it can be dripped accurately in the required amount, so that there is an advantage that the waste of the solution is eliminated.
[0027]
FIG. 5 shows another example of the volume change restricting means. FIG. 5C is a longitudinal sectional view taken along line AA ′ with respect to FIG. In this example, an annular flat plate 40 is provided between the pressing piece 4 and the dropping operation unit 3. The pressing piece protrudes from a through hole 41 provided at the center of the annular flat plate 40, and the user presses the pressing piece to push down the dropping operation portion. However, the movement of the finger is restricted by the flat plate. Since it can be pressed only up to a certain position, the amount of dripping can be made constant. In this example, the number of parts of the dropping operation member is increased by one as compared with the example shown in FIG. 1, but the container is more excellent in terms of ease of molding of each part and adjustment of the dropping amount. In this example, the cap member 50 of the container is formed so as to cover the container main body 42. This is to make it possible to clearly indicate to the user the limit of screwing when the cap member is tightened with the end face 43 of the container body. This is because the shape of the dripping port 46 is not deformed. Furthermore, the thin seal 45 of the container main body 42 maintains the hermeticity in the container at the time of distribution and storage, and the spike is used for the storage of the inner solution in use after being opened by the spike 44 at the center of the bottom of the cap. This is done by closing the container dropping port. FIG. 4B shows a state where the cap member 50 is removed. In this figure, a part 48 of the annular peripheral wall is formed to be depressed. In this case, when a user with a long nail presses the pressing piece, it is easy to press by operating to bring the toe to this part.
[0028]
It is desirable that the dropping operation part and the pressing piece with continuous frequent shape change are molded integrally from the viewpoint of durability and shape maintenance, but both are individually molded and the contacts are bonded in various ways. You may couple | bond by the method (For example, above-mentioned ultrasonic welding etc.). The advantage of molding both separately is that the dropping operation part can be made of elastic material so that it can be easily deformed, and the pressing piece can be made of rigid material so that it is hard to deform. The combined material can be used, but the disadvantage is that the connection point between the two is easily damaged. In addition, it is preferable to use the same material for adhesion between the main body container and the dropping operation member, and since the material of the dropping operation portion is made of a rigid resin, the shape of the dropping operation portion is exemplified. It is formed into a thin dome shape so that it can be elastically deformed. It should be noted that the dropping operation section and the pressing piece are not particularly required to be transparent, and there is no problem even if they are colored in various colors or differently colored for each member.
[0029]
A dripping port 25 for dripping the inner solution is formed as an inner hole at the center of the dripping tube 26 at the other end of the container body. As shown in FIG. 3, the tip portion of the dropping tube is formed with a burr portion 27 protruding in the outer peripheral direction of the dropping tube 26, thereby forming a step between the burr portion and the dropping tube. As a result, the internal solution poured out through the dropping port can be drained well. Further, the dropping port may be a pouring path that penetrates with a constant inner diameter, but it is preferable to form the tapered surface 20 so as to have a larger diameter toward the tip as shown in FIG. As shown in the figure, the outer surface 28 reaching the end surface of the burrs is preferably a curved surface. Depending on the angle at which the container body is gripped during the dropping operation (when the container is set up vertically with the dropping port down or when the container is held at an angle, etc.) This is to prevent the difference in contact area between the droplets and the size of the droplets based on the surface tension of the solution, whereby an excellent solution draining effect can be obtained. The operation of pouring the inner solution from the container body is due to the deformation of the dropping operation part when pressing the pressing piece, so when the pressure on the pressing piece is released, the dropping operation part is restored to the inside of the container body by restoring the dropping operation part. The suction force will work. At this time, since the liquid droplet remaining in the dropping port also flows back into the container, the liquid breakage from the dropping port is an important factor for achieving a certain amount of dropping. In particular, when the solution is a liquid enzyme agent, a solution having a high viscosity is used to stabilize the enzyme, and the solution tends to stay in the dropping port. Can be avoided.
[0030]
The inner diameter (a in FIG. 3) of the dripping port 25 and the angle of the taper surface are appropriately determined depending on the physical properties such as the viscosity and surface tension of the inner solution. The range of 3 mm to 1.5 mm and the angle of the tapered surface is 30 to 60 °. If the inner diameter is not expanded as the viscosity increases, the pressure inside the container will increase only by the pressure during the dropping operation, and the internal solution may not be poured out. Conversely, if the viscosity is low, the container is simply turned upside down at the time of dropping. Thus, it is not necessary to wait for the pressing piece to be pressed, and the dropping of the inner solution proceeds so that a constant dropping amount cannot be obtained. Further, when the angle of the tapered surface is 30 ° or less, there is a tendency that liquid breakage at the time of dropping tends to be worse, and when it is 60 ° or more, the liquid remaining in the dropping port tends to remain, so select in the above range. It is preferable.
[0031]
The diameter of the dripping tube 26 and the burr portion 27 should be larger than the diameter of the dripping tube, but if there is not much difference between them, droplets can be formed across the dripping tube behind the burr portion, Since it can be a cause, it is desirable that the diameters of the two have a difference of 0.5 mm or more, preferably 1 mm or more. Further, if the diameter of the dropping tube 26 (b in FIG. 3) is too large, it is difficult to see the droplets at the dropping port, and it is difficult to accurately drop the droplets on the container, so that it is within the range of 2 mm to 5 mm. desirable.
[0032]
In the example shown in FIG. 1, a male screw 22 is formed between the dropping tube and the container main body, and a cap member 10 for closing the dropping port is detachably screwed. The cap member has the function of a normal cap, that is, it prevents the solution inside the container body from volatilizing and flowing out during the distribution process and use, or contamination due to contamination with dust, dust, etc. It has a role to protect against physical shock from The cap member may be connected to the container not only by screwing with the container body but also by fitting or other methods. Further, since the cap member is detachably connected to the container main body, it is not necessary to be made of the same material as the above members (dropping operation member, container main body).
[0033]
When the dripping port of the container main body has a through hole from the beginning, a material having rubber elasticity (for example, packing made of silicon rubber) is bonded to the inner bottom portion of the cap member that contacts the dripping port instead of the spike. It is preferable. This is because, when the cap member is screwed into the container body, the packing is brought into close contact with the dropping port so as to improve the hermeticity in the container and prevent evaporation of the internal solution in the distribution process. . On the other hand, when the dropping port is sealed so as to be ruptured, it is desirable to have a spike for making a hole in the seal portion at the inner bottom portion of the cap member. When the dripping port is sealed so as to be ruptured, the liquid tightness inside the container in the distribution process is sufficiently ensured, and the above-described packing is not necessary, so that it is advantageous to reduce the number of parts and the container cost. I can plan. Storage during the period of use is achieved by closing the dripping port through which the spike of the cap member has passed. The material of the cap member varies greatly depending on whether or not the spike needs to be formed. As described above, since the diameter of the dripping port is very thin, it is a condition that the penetration of the sealed portion is a very thin spike. In order to have a certain degree of rigidity even with a thin spike, the seal member cannot be penetrated unless the material of the cap member itself uses a rigid resin. Specifically, it is selected from polycarbonate, nylon, acrylic and the like. On the other hand, if it is a cap member that does not require a spike as a component, it is considered that there is no problem in using even a somewhat flexible cap (for example, polyethylene, polypropylene, etc.).
[0034]
Moreover, the safe supply of goods can be made more reliable by linking the operation at the time of opening the seal by screwing the cap member and the unauthorized opening recognition mechanism. The unauthorized opening recognition mechanism in the example of the present invention is based on forming a ring-shaped cylindrical stopper 8 between the cap member 10 and the container body 2 as shown in FIG. The cylindrical stopper is connected to the opening end of the cap member 10 in a thin wall, and it is desirable that one end surface of the cylinder is tapered as shown in the figure. On the other hand, an annular protrusion 29 is formed at the end of the male thread of the container body, and the forward movement of the cylindrical stopper is hindered by locking with the peripheral wall of one end of the cylindrical stopper. When the cap member having the cylindrical stopper is screwed, when the screw is tightened with a normal force, the advancement of the cylindrical stopper is caught by the annular ridge portion 29 of the container body. Is also stopped when it comes into contact with the cylindrical stopper. The spike 11 provided at the inner bottom portion of the cap member at that position does not reach the dropping port seal 24. However, when the cap is further forcibly screwed, the peripheral wall at one end of the cylindrical stopper moves over the annular ridge of the container main body, and finally, at the step position 30 of the container main body, Advancement is stopped. When the cap is screwed up to here, the opening of the dropping port by the spike is completed, and the solution can be dripped from the container if the cap is opened. In addition, since the other end surface inside the cylindrical stopper and the annular ridge of the container body are engaged, the cylindrical stopper cannot be easily changed in position and fixed. I can easily recognize whether or not.
[0035]
The cylindrical stopper is connected to the cap member in a breakable manner. Even when the cap member is not forcibly screwed, a so-called pill that is broken by the cap member in the opening direction and remains in the container body. It is configured like a fur-proof cap and can completely prevent unauthorized opening of the cap. This will be described below with reference to the drawings. 4A includes a container main body 2 before a cap member having a cylindrical stopper is attached, a dropping operation unit 3 attached to close the opening, a pressing piece 4, and a volume change restricting means 5. The dropping operation member is shown as a perspective view. As described above, the container body is provided with the second annular protrusion 35 in addition to the protrusion 29 so that the cylindrical stopper does not follow the cap even when the cap is simply opened, as shown in FIG. Thus, when the cap is attached to the container body, the cylindrical stopper is positioned between the first annular ridge portion 29 and the second annular ridge portion 35. The second annular protrusion 35 protrudes outward from the thread 22, and the cylindrical stopper 8 is forced to get over the protrusion 35 by the screwing of the cap member. Thereafter, even if the cap member is opened, the cylindrical stopper cannot again exceed the protrusion 35, and the cylindrical stopper is separated from the cap member and remains in the container body (so-called pill fur proof). mechanism). This is because the cross section of the cylindrical stopper is tapered at one end face and an acute angle at the other end face as shown in FIG. Therefore, once the cap member is attached to the container body, the cylindrical stopper is surely separated when the cap member is removed. FIG. 4C shows a state in which the cap member is removed after the cap member is further screwed to open the dropping port of the container body. At this time, the cylindrical stopper further advances, gets over the annular protrusion 29 and is fixed to the container body.
[0036]
As described above, the cylindrical stopper is integrated with the container main body after the container is opened, and becomes a kind of design arrangement, so that a suitable impression is given to the user. Therefore, it is preferable that the cylindrical stopper is colored in various ways so that it functions not only as an unauthorized opening recognition mechanism but also as a decorative part of the container. In addition, for example, when the container body is cylindrical, the container is easy to roll when placed sideways. Therefore, a corner may be provided on the outer surface of the cylindrical stopper to form a hexagonal column like a pencil. Here, the width of the cylindrical stopper may be larger than the width that allows the spike of the cap member to be screwed from the non-destructive position of the dropping port to the opening position of the dropping port, and is usually about 2 to 7 mm. The cylindrical stopper has an inner diameter that is slidable with respect to the thread 22 of the container body, and is smaller than the outer diameter of the annular protrusion. However, as described above, the cylindrical stopper is preferably made of a material that has a shape change possibility to some extent so that the cylindrical stopper can get over the protruding portion. Even if there is no possibility of shape change at all, it is possible to break the annular ridge of the container body and advance the cylindrical stopper, but if this is done, a considerable force is applied to the screwing of the cap. Therefore, it may be difficult for the user to use.
[0037]
The specific configuration of the present invention has been described above, but this is merely an example, and the present invention is not limited by the above description.
[0038]
For example, the tamper-evident recognition mechanism described above is arbitrarily attached, and it is possible to prevent tampering by packaging the entire container with a shrink film or the like without attaching the mechanism. May be packed in a paper box or the like. In addition, the container body, the cap member, the pressing piece, and the like do not need to have a cylindrical outer shape, and can be formed as a polygonal column to prevent rolling when placed horizontally or to be easily gripped when gripped. Needless to say, these are appropriately changed without departing from the gist of the present invention.
[0039]
【The invention's effect】
As described above, in the dripping container according to the present invention, it is possible to easily guarantee a stable dripping amount especially in the handling of a liquid enzyme agent and the like, and the cost of the container itself is simple. Can be reduced. In addition, the supply of containers with high sealing properties prolongs the storage period and widens the range of prescriptions that can be applied to other uses. Furthermore, as another aspect, it has been possible to ensure the safety in the distribution process by adopting the tamper-evident prevention mechanism, and at the same time, the configuration that does not impair the aesthetics of the container.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of the present invention.
FIG. 2 shows another example of a joining form of the dropping operation section and the pressing piece according to the present invention.
FIG. 3 is an enlarged sectional view showing an example of a dropping port.
4A shows another example of the container body of the present invention, FIG. 4B shows a state in which a cap member is attached to the container body, FIG. 4C shows a state in which the cap member is removed, and a cylindrical stopper serves as the container body. It is a perspective view which shows the state integrated with each.
5A shows another example of the present invention, FIG. 5B is a perspective view of the container body with the cap member removed, and FIG. 5C is a cross-sectional view taken along line AA ′ in FIG. 5A.
[Explanation of symbols]
1 Dripping container
2 Container body
3 dripping operation section
4 Pressing piece
5, 40 Volume change regulation means
8 Cylindrical stopper
10, 50 Cap member
11, 44 spike
20 Tapered surface
22 screws
24, 45 Thin seal
25 Drip port
26 Dripping bowl
27 Frog Club
29, 35 Annular ridge
30, 43 steps

Claims (2)

A container main body having a dripping opening sealed for dripping a predetermined solution contained therein, and a sealing portion of the dripping opening of the container main body being detachably attached to the container main body. In a liquid dripping container comprising a cap member having a spike for projecting at the center of the inner bottom portion and a cylindrical stopper continuously provided in a thin wall at the cap member opening end, a screw (with the cap member) of the container body is provided. An annular ridge is provided around the end of the threaded portion, and one end surface of the cylindrical stopper is locked to the ridge, thereby controlling the screwing of the cap member before opening, and forcing at the time of opening. The cylindrical stopper moves forward beyond the ridge, and the other end surface of the cylindrical stopper engages with the ridge of the container body, and the container body is caused by a spike at the inner bottom of the cap member. Dripping A liquid dripping container configured to open a seal, and configured such that a thin stopper portion with a cylindrical stopper is broken and the cylindrical stopper remains in the container body by screwing off the cap member . Claim 1 In the liquid dropping container described above, the container main body is provided in a state of constituting a part of the container wall of the container main body, and is deformed by the pressing operation and deformed by restoring the original shape based on the elasticity of the constituent material. A dropping operation member that includes a dropping operation unit that reversibly increases and decreases the internal volume thereof, and a pressing piece that is configured integrally with the dropping operation unit and that enables a pressing operation to the operation unit in a vertical direction; A liquid dripping container comprising:

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