JP6830241B2 - Discharge nozzle member - Google Patents

Description

The present invention is a discharge nozzle member applied to a container containing a liquid, particularly, but not limited to, a dental adhesive or a therapeutic agent containing a volatile organic solvent, a polymerizable monomer and a polymerization catalyst. With respect to a discharge nozzle member, which can be conveniently applied to a container containing the above.

Patent Document 1 below discloses a container that can be conveniently used as a container for a liquid such as a dental adhesive or a therapeutic agent containing a volatile organic solvent, a polymerizable monomer and a polymerization catalyst. There is. Such a container includes an outer container, an inner container housed in the outer container, and a lid member attached to the outer container. The inner container for containing the liquid has a mouth neck with an open upper end, and a discharge nozzle member is attached to the mouth and neck. When the lid member is attached to the outer container, the discharge nozzle member attached to the inner container is covered with the lid member. When using the liquid contained in the inner container, the lid member is separated from the outer container to expose the discharge nozzle member, the entire container is tilted so that the tip of the discharge nozzle member is directed downward, and then the outside. The main part of the container is pressed to compress the main part of the inner container together with the main part of the outer container, and the liquid is discharged through the discharge hole of the discharge nozzle member.

The discharge nozzle member includes a substantially cylindrical nozzle portion having a discharge hole penetrating from the lower end to the upper end, an annular bottom wall extending radially outward from the lower end of the nozzle portion, and an outer peripheral edge of the bottom wall. The liquid pool is defined by the outer peripheral surface of the nozzle, the upper surface of the bottom wall, and the inner peripheral surface of the outer wall, including the cylindrical outer wall extending upward from the nozzle and the annular flange wall extending radially outward from the upper end of the outer wall. Has been done. The liquid that flows out through the discharge hole but flows on the outer peripheral surface of the nozzle member without separating from the nozzle member flows down along the outer peripheral surface of the nozzle portion and flows into the liquid reservoir when the container is returned to the upright state. ..

JP 2015-157643

The container as described above disclosed in Patent Document 1 is an excellent one that can prevent so-called spillage and dripping as much as possible even when the liquid contains a volatile organic solvent, but it is still sufficiently. It is not satisfactory, and there are the following problems to be solved regarding the discharge nozzle member. First, when the liquid that has flowed into the liquid reservoir and stays there is separated from the lid member and tilts the entire container so that the tip of the discharge nozzle member is directed downward, the liquid flows out of the liquid reservoir and separates from the discharge nozzle member. And tends to fall. Secondly, the liquid flowing out of the liquid reservoir may flow to the surface of the flange wall and then to the outer peripheral surface of the upper end portion of the outer container. In particular, when the liquid is a dental adhesive containing a polymerizable monomer and a polymerization catalyst, the liquid flowing on the outer peripheral surface of the upper end of the outer container hardens between the outer container and the lid member, which is caused by this. It may be difficult to remove the lid member. Thirdly, the tip of the discharge hole (upper end) is set to have a significantly smaller diameter than the main part of the discharge hole, so that the tip of the discharge hole is particularly high in viscosity of the liquid. The part may be blocked by the liquid.

The present invention has been made in view of the above circumstances, the principal technical problem of the present invention, the variable is also toward the tip of the discharge nozzle member downwardly staying in the sump liquid flows out from the liquid reservoir A new and improved discharge nozzle member that is effectively prevented, and that even if the liquid flows from the liquid reservoir to the surface of the flange, it is surely prevented from flowing to the outer peripheral surface of the upper end portion of the outer container. Is to provide .

As a result of diligent research and experiments, the present inventors have arranged a plurality of ridges extending in the vertical direction at intervals in the circumferential direction on the outer peripheral surface of the nozzle portion , and also arranged the plurality of ridges. In addition to the installation, an annular flange wall extending radially outward from the upper end of the outer wall, a cylindrical protruding wall protruding upward from the outer peripheral edge of the flange wall, and an annular shape on the outer peripheral edge of the upper surface of the flange wall. It has been found that the above-mentioned main technical problems can be achieved by forming the groove .

That is, according to the present invention, as a discharge nozzle member that achieves the above-mentioned main technical problem,
A tubular nozzle portion having a discharge hole for discharging a liquid penetrating from the lower end to the upper end, an annular bottom wall extending radially outward from the lower end to the lower portion of the nozzle portion, and the bottom wall. It includes a tubular outer wall extending upward from the outer peripheral edge , and is discharged from the discharge hole by the outer peripheral surface of the nozzle portion, the upper surface of the bottom wall, and the inner peripheral surface of the outer wall, but is separated from the nozzle portion. In the discharge nozzle member in which an annular liquid reservoir for accumulating the liquid that has flowed on the outer peripheral surface of the nozzle portion is defined.
The outer peripheral surface of the nozzle portion, a plurality of ridges extending in the vertical direction at intervals in the circumferential direction are disposed,
An annular flange wall extending radially outward from the upper end of the outer wall and a tubular protruding wall protruding upward from the outer peripheral edge of the upper surface of the flange wall are attached.
An annular groove portion for capturing the liquid flowing out of the annular liquid reservoir and flowing on the upper surface of the flange wall is formed on the outer peripheral edge portion of the flange wall.
Discharge nozzle member, wherein the call is provided.

The discharge nozzle of the present invention is particularly suitable for application to the mouth and neck of a container that houses a dental adhesive.

In the discharge nozzle member of the present invention, the contact area between the liquid staying in the liquid reservoir and the discharge nozzle member is significantly increased due to the presence of the ridges, and therefore the outflow prevention force from the liquid reservoir due to the surface tension of the liquid Is greatly increased, and thus the liquid staying in the liquid reservoir is prevented from flowing out from the liquid reservoir even if the tip of the discharge nozzle member is directed downward. Further, an annular flange wall extending radially outward from the upper end of the outer wall and a tubular projecting wall protruding upward from the outer peripheral edge of the upper surface of the flange wall are attached, and the outer peripheral edge of the flange wall is annular. Since the groove is formed, even if the liquid flows from the liquid reservoir to the upper surface of the flange wall, the liquid flowing on the surface of the flange wall is accommodated in the groove and flows over the flange wall due to the presence of the protruding wall. Thus, even if the liquid flows from the liquid reservoir to the surface of the flange, it is sufficiently prevented from flowing to the outer peripheral surface of the upper end portion of the outer container .

The exploded perspective view which shows the container to which the preferable embodiment of the discharge nozzle member of this invention is applied. The vertical sectional view of the container of FIG. The front view of the discharge nozzle member applied to the container shown in FIG. The plan view of the discharge nozzle member of FIG. FIG. 4 is a cross-sectional view taken along the line VV of FIG. Sectional view taken along line VI-VI of FIG.

Hereinafter, the details will be further described with reference to the accompanying drawings illustrating the container to which the discharge nozzle member is applied together with the preferred embodiment of the discharge nozzle of the present invention.

Explaining with reference to FIGS. 1 and 2, the illustrated container, which is a typical example in which the discharge nozzle configured according to the present invention can be conveniently applied, includes an outer container 2, an inner container 4, and a lid member 6. ing.

The outer container 2, which can be formed from a relatively soft suitable synthetic resin, has a main portion 8 and a mouth and neck portion 12 connected to the main portion 8 via the shoulder portion 10. The main portion 8 has a bottomed elliptical cylinder shape, and the mouth neck portion 12 has a cylindrical shape. At least the main portion 8 of the outer container 2 has the flexibility to bend when pressed with a finger. On the pair of wide outer surfaces of the main portion 8 of the outer container 2, there are vertically elongated elliptical recesses 14 (one of which is shown in FIG. 1) indicating a portion on which a finger is hung when the main portion 8 is pressed. A rectangular recess 16 (one of which is shown in FIG. 1) extending in the vertical direction is formed on the pair of narrow outer surfaces. An elliptical annular step 18 is formed on the upper surface of the shoulder 10. A shoulder surface 20 facing downward is formed in the lower part of the inner peripheral surface of the mouth neck portion 12 having an open upper end, and the inner diameter of the lower end portion of the inner peripheral surface is slightly larger than the inner diameter of the portion above it. A male screw 22 is formed on the outer peripheral surface of the mouth neck 12.

Similarly, the inner container 4, which can be formed from a relatively soft suitable synthetic resin, also has a mouth neck 28 connected to the main portion 24 via a main portion 24 and a shoulder portion 26, and the main portion 24 has a main portion 24. It has a bottomed cylindrical shape, and the mouth neck 28 has a cylindrical shape. At least the main portion 24 of the inner container 4 also has the flexibility to bend when pressed with a finger. An annular ridge 30 is formed at the upper end of the outer peripheral surface of the main portion 24. An annular flange wall 32 extending outward in the radial direction is attached to the upper end of the mouth neck 28. A discharge nozzle member 34 configured according to the present invention is attached to the mouth neck 28 of the inner container 4. The discharge nozzle member 34 will be described in more detail later.

The lid member 6, which can be formed from a relatively hard suitable synthetic resin, has a substantially elliptical top wall 36 and a skirt wall 38 hanging from the peripheral edge of the top wall 36. The outer peripheral surface of the skirt wall 38 has an elliptical tubular shape, while the inner peripheral surface has a cylindrical shape. A pair of narrow outer surfaces of the skirt wall 38 are formed with rectangular recesses 40 extending in the vertical direction. A female screw 42 is formed on the inner peripheral surface of the skirt wall 38. An elliptical annular step 44 is formed on the lower end surface of the skirt wall 38. A seal protrusion 46 is formed at the center of the lower surface of the top wall 36.

As is clearly understood by reference to FIG. 2, the inner container 4 containing, for example, a dental adhesive containing a volatile organic solvent or a liquid as a therapeutic agent is housed in the outer container 2. The outer peripheral edge of the flange wall 32 attached to the mouth neck 28 of the inner container 4 is placed on the upper end of the mouth neck 12 of the outer container 2 and formed on the upper end of the outer peripheral surface of the main portion 24 of the inner container 4. The ridge 30 is engaged with the shoulder surface 20 formed in the lower part of the inner peripheral surface of the mouth neck portion 12 of the outer container 2, and thus the inner container 4 is positioned as required with respect to the outer container 2. .. The lid member 6 is fitted to the mouth neck portion 12 of the outer container 2, and the female screw 42 formed on the inner peripheral surface of the skirt wall 38 of the lid member 6 is attached to the outer peripheral surface of the mouth neck portion 12 of the outer container 2. It is attached to the mouth neck 12 of the outer container 2 by being screwed into the formed male screw 22. When the lid member 6 is attached to the mouth neck portion 12 of the outer container 2, the discharge nozzle member 34 to which the inner container 4 is attached is covered with the lid member 6. It enters the tip of the discharge hole (which will be described in more detail later) formed in the discharge nozzle member 34 and seals the discharge hole.

When the liquid contained in the inner container 4 is used, the lid member 6 is separated from the mouth neck portion 12 of the outer container 2 to expose the discharge nozzle member 34. Next, the entire container is tilted so that the tip of the discharge nozzle member 34 is directed downward, and a finger is brought into contact with and pressed against the recess 14 formed in the main portion 8 of the outer container 2, and the main portion 8 of the outer container 2 is pressed. At the same time, the main portion 24 of the inner container 4 is compressed, and thus the liquid is discharged through the discharge nozzle member 34.

Thus, the configurations other than the discharge nozzle member 34 in the container as described above show a typical example of the container to which the discharge nozzle member 34 configured according to the present invention is applied, and such a configuration is described in Patent Document 1 above. It may be similar to or substantially the same as the configuration disclosed in the above, and therefore, the description of the details of the configuration is left to Patent Document 1 and omitted in the present specification.

Next, the discharge nozzle member 34 configured according to the present invention will be described in detail with reference to FIGS. 3 to 6 together with FIGS. 1 and 2.

The discharge nozzle member 34, which can be formed from an appropriate synthetic resin such as polypropylene or polyethylene, has a tubular nozzle portion 48. In the illustrated embodiment, the outer peripheral surface of the nozzle portion 48 has an upright cylindrical shape as a whole, and as is clearly understood by referring to FIGS. 3 and 6, a truncated cone-shaped portion 50 is present at the upper portion. The diameter of the upper end 52 above the truncated cone shape 50 is somewhat smaller than the diameter of the main 54 below the truncated cone 50. The nozzle portion 48 is formed with a discharge hole 56 that penetrates from the lower end to the upper end, that is, extends continuously from the lower end to the upper end. The discharge hole 56 extends substantially vertically, has a circular cross-sectional shape, and has the same inner diameter except for the upper end portion. The inner peripheral surface of the upper end portion of the discharge hole 56 has an inverted truncated cone shape, and the inner diameter gradually increases upward. Although it depends on the viscosity of the liquid contained in the inner container 4, when the viscosity of the liquid at 23 ° C. is about 0.0003 to 5 Pas, the flow of the liquid in the discharge hole 56 is hindered and the discharge hole 56 is formed. In order to avoid being blocked by the liquid, the inner diameter D of the main portion (the portion excluding the upper end portion) of the discharge hole 56 is preferably 1.0 to 2.0 mm, preferably 1.2 to 1.7 mm. Is more preferable. The inclination angle α with respect to the vertical of the inner peripheral surface of the upper end portion of the discharge hole 56 may be about 30 to 60 degrees. On the other hand, in order to prevent the liquid from freely flowing down the discharge hole 56 when the discharge nozzle member 34 is substantially inverted, so-called drop-off occurs, the main portion (the portion excluding the upper end portion) of the discharge hole 56. The length in the longitudinal direction, that is, the length L in the vertical direction is preferably 10.0 to 19.0 mm, and more preferably 13.0 to 16.0 mm. By setting the inner diameter D and the vertical length L of the main part of the discharge hole 56 to the above ranges, the discharge hole 56 is less likely to be blocked by the liquid even in a highly viscous liquid, and dripping occurs even in a low viscosity liquid. hard, thus it can be suitably used in container containing a liquid of a wide range of viscosities.

An annular bottom wall 58 extending radially outward from the lower end of the nozzle portion 48 is attached to the nozzle portion 48. In the illustrated embodiment, the bottom wall 58 is annular and extends substantially horizontally outward in the radial direction. If desired, the bottom wall 58 extends radially outwardly from the bottom edge (somewhat above the bottom edge) rather than from the bottom edge of the nozzle 48, so that the nozzle 48 extends below the bottom wall 58. It can also be in the form of protruding. The discharge nozzle member 34 further includes a tubular outer wall 60 extending upward from the outer peripheral edge of the bottom wall 58, the lower half outer peripheral surface of the nozzle portion 48, the upper surface of the bottom wall 58, and the inner circumference of the outer wall 60. The annular liquid reservoir 62 is defined by the surface. In the illustrated embodiment, the inner peripheral surface of the outer wall 60 has a cylindrical shape, and a ring-shaped liquid reservoir 62 is defined. It is convenient that the outer side wall 60 extends upward from the bottom wall 58 to a height corresponding to the vertical intermediate portion of the nozzle member 48. The outer peripheral surface of the outer side wall 60 is also cylindrical, and an annular seal ridge 63 is formed on the outer peripheral surface.

The discharge nozzle member 34 is further provided with an annular flange wall 64 extending radially outward from the upper end of the outer wall 60, and a tubular protruding wall 66 projecting upward from the outer peripheral edge of the flange wall 64. An annular groove 68 is formed on the upper surface of the flange wall 64. In the illustrated embodiment, the flange wall 64 has an annular shape that extends substantially horizontally outward in the radial direction, and the protruding wall 66 has a cylindrical shape that projects substantially vertically upward. The groove portion 68 has an annular shape, and the cross-sectional shape of the groove portion 68 is rectangular. The boundary region between the inner peripheral surface of the outer side wall 60 and the upper surface of the flange wall 64 is arcuate, and the upper end of the inner peripheral surface of the protruding wall 66 has an inverted truncated cone shape that inclines outward in the radial direction. ..

In the discharge nozzle member 34 of the present invention, a plurality of, preferably about 6 to 10 ridges 70 extending in the vertical direction at intervals in the circumferential direction are arranged on the outer peripheral surface of the nozzle portion 48. It is important to be there. In particular, to continue the description with reference to FIGS. 4 to 6, in the illustrated embodiment, the outer peripheral surface of the nozzle portion 48 extends vertically, preferably substantially vertically, at equal intervals in the circumferential direction. Eight ridges 70 are arranged. The thickness (circumferential direction dimension) of each of the ridges 70 is gradually increased downward. If desired, the thickness of each of the ridges 70 can be made uniform. Each radial outer edge of the ridge 70 extends upwardly with a gradual radial inward extension, in other words, with a downward gradual radial outward extension, a straight line or some indentations. It may be curved, and it is convenient that the amount of each radial protrusion of the ridge 70 is gradually decreased upward, in other words, gradually increased downward. It is convenient that the cross-sectional shape of each radial outer edge of the ridge 70 is semicircular (see FIG. 4 ). Each lower end edge of the ridge 70 is connected to the bottom wall 58, and each lower end outer edge of the ridge 70 (radial outer end of the lower end edge) is close to or connected to the inner peripheral surface of the outer wall 60. There is. Each upper end of the ridge 70 is preferably located below the upper end of the nozzle portion 48 but above the upper end of the outer wall 60, and in the illustrated embodiment, the upper end of the ridge 70 is the nozzle portion 48. It is fitted to the lower end of the truncated cone-shaped portion 50 of the above.

As is clearly understood by referring to FIG. 2, the discharge nozzle member 34 as described above has the mouth neck of the inner container 4 by fitting the outer wall 60 into the mouth and neck 28 of the inner container 4. It is attached to 28. The seal ridge 63 formed on the outer peripheral surface of the outer side wall 60 is brought into close contact with the inner peripheral surface of the mouth neck 28 of the inner container 4. The lower surface of the flange wall 64 of the discharge nozzle member 34 is in contact with the upper surface of the flange wall 32 arranged at the upper end of the mouth neck 28 of the inner container 4, whereby the discharge to the mouth neck 28 of the inner container 4 is made. The vertical position of the nozzle member 34 is restricted.

As described above, the lid member 6 is separated from the mouth neck portion 12 of the outer container 2 to expose the discharge nozzle member 34, and then the outer container 2 and the inner container 4 are tilted so that the tip of the discharge nozzle member 34 is directed downward. After that, the main part 8 of the outer container 2 is pressed to compress the main part 24 of the inner container 4 together with the main part 8 of the outer container 2 to discharge the liquid contained in the inner container 4 into the discharge hole of the nozzle member 34. When the liquid is discharged through the discharge hole 56, the liquid discharged from the discharge hole 56 may flow to the outer peripheral surface of the nozzle portion 48 without being separated from the discharge nozzle member 34. When the entire container is returned to the upright state, such a liquid flows down along the outer peripheral surface of the nozzle portion 48 and flows into the liquid reservoir 62. When the lid member 6 is detached from the mouth neck portion 12 of the outer container 2, the outer container 2 and the inner container 4 are tilted again, and the tip of the discharge nozzle member 34 is directed downward, the liquid in the liquid reservoir 62 is the nozzle portion 48. In the discharge nozzle member 34 of the present invention, a plurality of discharge nozzle members 34 extending in the vertical direction at intervals in the circumferential direction are provided along the outer peripheral surface or the inner peripheral surface of the outer wall 60. Due to the formation of the ridges 70, the contact area between the liquid in the liquid reservoir 62 and the surface of the discharge nozzle member 34 is significantly increased, whereby the liquid outflow from the liquid reservoir 62 due to the surface tension of the liquid. The blocking force (liquid outflow resistance) is greatly increased, and the outflow of liquid from the liquid reservoir 62 is prevented as much as possible.

Further, in the discharge nozzle member 34 of the present invention, even if the liquid flows out from the liquid reservoir 62 and flows to the upper surface of the flange wall 64, the liquid flowing outward in the radial direction on the upper surface of the flange wall 64 is the flange wall 64. It is捉catching in the groove 68 which is of forming on the upper surface, and flow radially outward is prevented by the protruding wall 66 and as the further flow out from the groove 68. Thus, it is sufficiently surely avoided that the liquid flows to the outer peripheral surface of the mouth neck portion 12 of the outer container 2. Therefore, even when the liquid is a dental adhesive containing a polymerizable monomer and a polymerization catalyst, the lid member 6 is detached due to the curing of the liquid between the mouth and neck portion 12 of the outer container 2 and the lid member 6. Will not be difficult.

2: Outer container 4: Inner container 6: Lid member 34: Discharge nozzle member 48: Nozzle part 56: Discharge hole 58: Bottom wall 60: Outer wall 64: Flange wall 66: Protruding wall 68: Groove 70: Protrusion

Claims (2)

A tubular nozzle portion having a discharge hole for discharging a liquid penetrating from the lower end to the upper end, an annular bottom wall extending radially outward from the lower end to the lower portion of the nozzle portion, and the bottom wall. It includes a tubular outer wall extending upward from the outer peripheral edge , and is discharged from the discharge hole by the outer peripheral surface of the nozzle portion, the upper surface of the bottom wall, and the inner peripheral surface of the outer wall, but is separated from the nozzle portion. In the discharge nozzle member in which an annular liquid reservoir for accumulating the liquid that has flowed on the outer peripheral surface of the nozzle portion is defined.
The outer peripheral surface of the nozzle portion, a plurality of ridges extending in the vertical direction at intervals in the circumferential direction are disposed,
An annular flange wall extending radially outward from the upper end of the outer wall and a tubular protruding wall protruding upward from the outer peripheral edge of the upper surface of the flange wall are attached.
An annular groove portion for capturing the liquid flowing out of the annular liquid reservoir and flowing on the upper surface of the flange wall is formed on the outer peripheral edge portion of the flange wall.
Discharge nozzle member, wherein the this. It is applied to the mouth-neck portion of a container for accommodating the dental adhesive, the discharge nozzle according to claim 1 Symbol placement.