JP2010006407A - Resin ampule - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin ampule with an improved opening operability for easily breaking a breaking part in opening. <P>SOLUTION: This resin ampule 1 is provided with a container body 2 for storing a content, a head part 3 tightly closing an opening 20 adjoined to the opening 20 of the body 2 through a breakable breaking part 5 and a knob 4 connected to the head part 3. The head part 3 is formed hollow with an internal space communicating with the inside of the body 2. At least either the end on the opening 20 side of the head 3 or the end of the head 3 side of the opening 20 is formed with an edge part 7 extending circumferentially with its diameter contracted stepwise in the diameter inside direction as it comes closer to the breaking part 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a resin ampoule that contains contents such as liquid, powder, granule, paste and the like.

As this type of ampoule, conventionally, for example, as shown in Patent Document 1 below, a container body that contains contents and a mouth part that is connected to the mouth part of the container body through a breakable part are provided. There is known a configuration including a head that seals a part and a plate-like knob connected to the head. The above-mentioned head and the knob are connected via a thin part that is thinner than the knob. In the ampoule having such a configuration, by holding the container body and picking the knob with a finger or the like and twisting or bending both, stress is applied to the rupture portion, and the rupture portion is broken. Thereby, the head is separated from the container body, and the container body can be opened.
Japanese Utility Model Publication No. 61-74529

However, since the resin ampule has lower rigidity than the glass ampule, the head and the mouth of the container main body are easily deformed when the opening operation is performed. When the head part or the mouth part of the container body is deformed, the stress is less likely to be concentrated on the broken part, so that the broken part is difficult to break and the opening operability is deteriorated.
In particular, when the head has a hollow structure, the head is more easily deformed, and thus the head is deformed together with the mouth portion of the container body when the opening operation is performed. For this reason, compared with the case where the head is solid, there is a problem that the opening of the head and the container body is particularly easily deformed, and the opening operability is further deteriorated.

  The present invention has been made in consideration of the above-described conventional problems, and provides a resin ampoule that can easily break the breaking portion when the opening operation is performed, and can improve the opening operability. The purpose is that.

  The resin ampule according to the present invention includes a container main body that contains contents, a head that is connected to the mouth of the container main body via a breakable portion, and seals the mouth, and the head In the resin ampoule provided with the knob, the head has a hollow shape having an internal space communicating with the inside of the container body, and the head side end of the mouth At least one of the end portion on the mouth side of the head portion and the head portion is formed with a corner portion that is gradually reduced in diameter radially inward and extends in the circumferential direction as it approaches the fracture portion. It is characterized by that.

  With such a feature, the corner portion increases the rigidity of at least one of the head-side end of the mouth and the mouth-side end of the head, and when the opening operation is performed, The head is less likely to be deformed, and stress tends to concentrate on the fractured portion. Furthermore, since the corner portion extends in the circumferential direction of the mouth portion and the head portion, both the radial and circumferential rigidity of the mouth portion and the head portion are enhanced by the corner portion. For this reason, when a container main body and a knob | pick part are rotated relatively around the center axis line of a container main body, and a container main body and a head are twisted and cut | disconnected, especially a mouth part and a head become difficult to deform | transform.

  In the resin ampule according to the present invention, the corner is formed at least at the end of the mouth on the head side, and extends on the outer peripheral surface of the container body along the axial direction of the container body. It is preferable that a side plate portion to be projected is provided, and the side plate portion and the corner portion are connected.

  Thereby, the rigidity of a corner | angular part and a side-plate part is strengthened, and the opening | mouth part by which rigidity was strengthened by these corner | angular parts and a side-plate part becomes further difficult to deform | transform.

  According to the resin ampule according to the present invention, the rigidity of at least one of the mouth portion and the head portion is increased, and stress is easily concentrated on the breaking portion during the opening operation. Can be easily broken, and the opening operability can be improved.

  Hereinafter, first and second embodiments of a resin ampoule according to the present invention will be described with reference to the drawings.

[First Embodiment]
First, a first embodiment of a resin ampoule according to the present invention will be described with reference to FIGS.
FIG. 1 is a front view of an ampoule 1 in the present embodiment, FIG. 2 is a side view of the ampoule 1 shown in FIG. 1 as viewed from the side, and FIG. 3 shows a state in which a plurality of ampoules 1 are integrally formed. FIG.
1 indicates a central axis of the container body 2 to be described later, and is simply referred to as “axis O” hereinafter. In the present embodiment, the direction along the axis O is referred to as “axial direction”, the direction orthogonal to the axis O is referred to as “radial direction”, and the direction around the axis O is referred to as “circumferential direction”. Further, in the present embodiment, the head 3 side (upper side in FIG. 1) described later as viewed from the mouth 20 of the container body 2 is “upper”, and the opposite side, that is, the mouth 20 side as viewed from the head 3. The “lower side” in FIG.

  As shown in FIGS. 1 and 2, the ampoule 1 is a resin container for storing the contents of liquid, powder, granules, paste, etc. in a sealed state, and the contents are accommodated as a schematic configuration. A container body 2 to be connected, a head part 3 that is connected to the mouth part 20 of the container body 2 via a constricted part 5 (corresponding to a break part in the present invention) and seals the mouth part 20; 3, and a knob 4 that is integrally connected to 3. The container main body 2, the head 3 and the knob 4 are integrally formed by, for example, a blow molding method. In addition, as resin material which forms the ampule 1, synthetic resins, such as a polypropylene and polyethylene, are used, for example.

  The container body 2 has a cylindrical shape with a circular cross-sectional view. More specifically, the container body 2 includes a cylindrical body portion 21 extending along the axis O, a bottom portion 22 provided below the body portion 21, and a cylindrical shape provided above the body portion 21. , A cylindrical injection portion 24 provided on the bottom portion 22, and a side plate portion 25 projecting radially outward from the outer peripheral surface of the trunk portion 21 and the mouth portion 20. The trunk portion 21, the bottom portion 22, the mouth portion 20, and the injection portion 24 are coaxially arranged with the axis O as a common axis.

  The lower end of the mouth portion 20 has a smaller diameter than the upper end of the body portion 21, and the body portion 21 and the mouth portion 20 have a tapered portion 26 that is gradually reduced in diameter from the upper end of the body portion 21 toward the lower end of the mouth portion 20. It is connected through. Further, the upper end portion of the mouth portion 20 is gradually reduced in diameter radially inward as the constricted portion 5 is approached, and a corner portion 7 extending in the circumferential direction is formed at the upper end portion of the mouth portion 20. ing. More specifically, the mouth portion 20 includes a straight cylindrical mouth body portion 50 and a step portion 51 connected to the upper end of the mouth portion body portion 50. The stepped portion 51 is a cylindrical portion that has a diameter reduced stepwise inward in the radial direction as it goes upward. The stepped portion 51 includes a lower tapered portion 52 that is gradually reduced in diameter from the upper end of the mouth body portion 50 toward the upper side, and a lower diameter that is smaller than the mouth portion body portion 50 and has an upper end (inner edge). ) From the upper end of the small-diameter cylindrical portion 53, and an upper tapered portion 54 that is gradually reduced in diameter from the upper end of the small-diameter cylindrical portion 53 upward. And between the upper end of the above-mentioned mouth part main-body part 50 and the lower end (outer edge) of the lower side taper part 52, the 1st convex corner | angular part 70 (corner in this invention) which bulged to the outward side of the mouth part 20 is carried out. Is formed over the entire circumference, and between the upper end (inner edge) of the lower tapered portion 52 and the lower end of the small-diameter cylindrical portion 53, the inner side of the mouth portion 20 is formed. A recessed corner portion 71 (corresponding to a corner portion in the present invention) is formed over the entire circumference, and further, between the upper end of the small diameter cylindrical portion 53 and the lower end (outer edge) of the upper tapered portion 54. A second convex corner portion 72 (corresponding to a corner portion in the present invention) bulging outward from the mouth portion 20 is formed over the entire circumference.

  The bottom portion 22 is an annular bottom plate portion having a tapered shape that is gradually reduced in diameter as it goes downward from the lower end of the body portion 21. The injection part 24 hangs down along the axis O from the inner edge of the bottom part 22, and the inside of the injection part 24 communicates with the inside of the trunk part 21 through the inside of the bottom part 22. Note that the lower end of the injection portion 24 is opened when the ampule 1 is molded, and is closed by heat welding or the like after the contents are injected into the inside of the ampule 1.

  The side plate portion 25 is a plate portion that extends along the axial direction, and extends from the upper end of the mouth portion 20 to the lower end of the trunk portion 21. The front end (side end) of the side plate portion 25 is formed in parallel with the axis O. The side plate portions 25 are respectively formed on both sides of the body portion 21 and the mouth portion 20, and the side plate portions 25 on both sides are disposed symmetrically about the axis O. That is, the side plate parts 25 on both sides are arranged on the same plane. Further, the upper end portions of the side plate portions 25 on both sides are substantially the same as the plurality of corner portions 7 (first convex corner portion 70, concave corner portion 71, second convex corner portion 72) formed at the upper end portion of the mouth portion 20. They are arranged vertically and are integrally connected to a plurality of corners 7. Furthermore, the upper ends of the side plate portions 25 on both sides are connected to the upper end portion (upper taper portion 54) of the step portion 51 that forms the constricted portion 5.

  The head 3 has a hollow shape having an internal space communicating with the inside of the container body 2. More specifically, the head 3 includes a top wall 30 that is substantially circular in plan view, and a peripheral wall 31 that is suspended from the outer edge of the top wall 30. The lower portion of the peripheral wall portion 31 has a substantially hemispherical shape that is gradually reduced in diameter toward the lower side, and the lower end of the peripheral wall portion 31 is connected to the upper end of the mouth portion 20 of the container body 2. And the boundary part (constriction part 5) of the opening part 20 of the container main body 2 gradually diameter-reduced as it goes upwards, and the head 3 gradually diameter-reduced as it goes downwards is diameter-reduced inside radial direction. The cross-sectional view has a substantially V-shaped cut shape, and is broken by twisting or folding the container body 2 and the head 3.

  The picking part 4 is a part for picking with a finger or the like when the ampoule 1 is opened. If it demonstrates concretely, the knob | pick part 4 is a plate-shaped part of the side view substantially rectangular shape thicker than the side plate part 25 mentioned above. The knob portion 4 is disposed on the same plane as the side plate portion 25 described above, and the lower end of the knob portion 4 and the upper end of the side plate portion 25 are connected via a thinned weakened portion 27. Further, a substantially concave cutout 40 is formed in the lower portion of the knob 4, and the above-described head 3 is disposed inside the cutout 40. The upper surface and both side surfaces of the head 3 and the inner edge of the notch 40 of the knob 4 are connected via a thin part 6 that is thinner than the knob 4. The thin-walled portion 6 extends over the entire inner edge of the notch 40 described above, and has a gate shape that surrounds both sides and the upper side of the head 3 in a side view.

  The ampoule 1 having the above-described configuration may be manufactured in a state where a plurality of ampoules 1 are connected as shown in FIG. More specifically, the plurality of ampoules 1 are molded by a blow molding method in a state where they are continuously arranged in parallel. At this time, the side plate portions 25 and the knob portions 4 of the adjacent ampules 1 are connected to each other via the weakening portion 9. Then, after the molding of the plurality of ampoules 1 is completed, the contents are respectively injected from the injection portions 24 of the plurality of ampules 1, and then a heated mold for closing is pressed against the lower end portions of the injection portions 24. Thus, the resin at the lower end portion of the injection portion 24 is melted and softened and molded into a flat shape or the like (the opposing surfaces are thermally welded), and the lower end portion of the injection portion 24 is closed. Thereby, the internal space of the ampoule 1 is sealed.

  Next, the operation of the ampoule 1 having the above configuration will be described.

  When opening the ampoule 1 having the above-described configuration, the container body 2 is grasped and the knob 4 is picked with fingers or the like, and the container body 2 and the knob 4 are relatively rotated around the axis O to twist them. Or the container main body 2 and the knob | pick part 4 are inclined relatively, and both are folded. By performing the opening operation as described above, stress is applied to the constricted portion 5, the constricted portion 5 is broken, and the head 3 and the knob 4 (separating piece 8) are separated from the container main body 2. The upper opening end of the mouth 20 is opened.

  At this time, since the rigidity of the mouth portion 20 is reinforced by the plurality of corner portions 7 (first convex corner portion 70, concave corner portion 71, second convex corner portion 72), when performing the above-described opening operation, The mouth portion 20 is difficult to deform. That is, even if the container body 2 and the knob portion 4 are twisted or folded, the vicinity of the constricted portion 5 of the resin mouth portion 20 does not extend, and the separation piece 8 (head portion 3) is formed on the rigid mouth portion 20. It is rotated or tilted relatively. Thereby, stress becomes easy to concentrate on the constricted part 5, and the constricted part 5 becomes easy to fracture | rupture. Further, in the ampoule 1 described above, the plurality of corner portions 7 are extended in the circumferential direction of the mouth portion 20, and both the radial and circumferential rigidity of the mouth portion 20 is enhanced. When the container body 2 and the knob 4 are relatively rotated and the container body 2 and the head 3 are twisted, the mouth portion 20 is particularly difficult to deform, and stress tends to concentrate on the constricted portion 5.

  In the ampoule 1 described above, since the plurality of corner portions 7 are connected to the side plate portion 25, the rigidity of the corner portions 7 and the side plate portion 25 is enhanced. Therefore, the deformation of the mouth part 20 whose rigidity is enhanced by the corner part 7 and the side plate part 25 is reliably suppressed.

  According to the ampoule 1 having the above configuration, the rigidity of the mouth portion 20 is increased, and stress is easily concentrated on the constricted portion 5 during the opening operation. Therefore, the constricted portion 5 is easily broken when the opening operation is performed. And the opening operability can be improved. In particular, the constricted portion 5 can be easily broken by twisting the container body 2 and the head 3.

  Moreover, since the knob | pick part 4 and the side-plate part 25 of the container main body 2 are connected via the weakening part 27, the container main body 2 and the knob | pick part 4 are prevented from being twisted or bent carelessly. And the leakage of the contents in the ampoule 1 can be prevented.

[Second Embodiment]
Next, a second embodiment of the resin ampoule according to the present invention will be described with reference to FIGS.
FIG. 4 is a front view of the ampule 1 in the present embodiment, and FIG. 5 is a side view of the ampule 1 shown in FIG. 4 as viewed from the side.
In addition, about the structure similar to above-mentioned 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The mouth portion 20 in the present embodiment is composed of a straight tubular mouth body portion 50 and a ridge line portion 151 connected to the upper end of the mouth portion body portion 50. The ridge line portion 151 is a cylindrical portion in which a ridge line extending in the circumferential direction is formed by being gradually reduced in diameter radially inward as it goes upward. The ridge line portion 151 has a configuration in which a plurality of taper portions 152, 153, 154, and 155 that are gradually reduced in diameter as they go upward are connected in the axial direction. The angle of inclination with respect to the axis O increases as the distance from the constricted portion 5 increases. And between the upper end of the mouth part main-body part 50 and the lower end of the taper part 152 located in the lowest part, and between the adjacent taper parts 152,153,154,155, it is on the outer side of the mouth part 20. Swelled convex corner portions 170, 171, 172, 173 (corresponding to the corner portions of the present invention) are formed over the entire circumference. The diameters of the plurality of convex corner portions 170, 171, 172, and 173 are smaller as the diameter is closer to the constricted portion 5. The plurality of convex corner portions 170, 171, 172, and 173 are integrally connected to the side plate portion 25, as in the first embodiment described above. Furthermore, the upper end of the side plate part 25 is connected to the taper part 155 (wall part forming the constricted part 5) closest to the constricted part 5 among the plurality of tapered parts 152, 153, 154, 155.

  According to the ampoule 1 having the above-described configuration, the rigidity of the mouth portion 20 is reinforced by the plurality of convex corner portions 170, 171, 172, and 173. Accordingly, the container body 2 and the knob 4 are rotated relative to each other around the axis O to twist them, or the container body 2 and the knob 4 are tilted relatively to fold both of them so that the ampule When opening 1, the mouth portion 20 is not easily deformed, and stress tends to concentrate on the constricted portion 5 during the opening operation. Therefore, when the opening operation is performed, the constricted portion 5 can be easily broken, and the opening operability can be improved. In particular, the constricted portion 5 is obtained by twisting the container body 2 and the head 3. Can be easily broken.

Although the first and second embodiments of the resin ampoule according to the present invention have been described above, the present invention is not limited to the first and second embodiments described above, and departs from the spirit thereof. It is possible to change appropriately within the range not to be.
For example, in the above-described embodiment, the step portion 51 and the ridge line portion 151 are provided at the upper end portion of the mouth portion 20, and the corner portions 7, 170 to 173 extending in the circumferential direction are formed at the upper end portion of the mouth portion 20. However, according to the present invention, the lower end portion of the head 3 is gradually reduced in diameter radially inward as the constricted portion 5 is approached, and the corner portion extending in the circumferential direction at the lower end portion of the head 3. Alternatively, both the upper end portion of the mouth portion 20 and the lower end portion of the head portion 3 are gradually reduced in diameter radially inward as they approach the constricted portion 5, and the upper end portion of the mouth portion 20. And a corner | angular part may be formed in both the lower end parts of the head 3, respectively. More specifically, the lower end portion of the head 3 has a stepped portion that is stepwise reduced radially inward as it goes downward, or the circumferential direction by being stepwise reduced radially inward as it goes downward. The ridgeline part in which the ridgeline extended in this was formed may be formed.

In the above-described first embodiment, the number of steps 51 is two, and in the second embodiment, the number of ridge lines 151 is four. In the present invention, the number of corners can be changed as appropriate. For example, the number of steps of the step 51 and the number of ridges of the ridge 151 may be increased or decreased.
Further, in the above-described embodiment, only the corner portions 7 and 170 to 173 extending in the circumferential direction are formed at the upper end portion of the mouth portion 20, but the present invention is not limited to the upper end portion or the head portion of the mouth portion 20. A corner portion extending in a direction intersecting the corner portion may be formed at the lower end portion of the portion 3 together with the corner portion extending in the circumferential direction. For example, the upper end portion of the mouth portion 20 may have a polygonal shape in plan view, and a ridge line (corner portion) orthogonal to the corner portion extending in the circumferential direction may be formed.

  In the embodiment described above, the injection part 24 for injecting the contents into the container body 2 is suspended from the bottom part 22 of the container body 2, but the present invention is limited to the above-described configuration. For example, the structure which the injection | pouring part stood on the upper surface of the head 3 may be sufficient.

  Moreover, in above-described embodiment, the side plate part 25 is protrudingly provided by the outer peripheral surface of the container main body 2, and the several ampule 1 was provided in a row by connecting each side plate part 25 mutually. Although the present invention is molded together in a state, the present invention may be configured such that the side plate portion 25 is omitted, and the ampule 1 may be molded one by one.

  In the above-described embodiment, the corner portions 7 and 170 to 173 are connected to the side plate portion 25, but the present invention is configured such that the corner portions 7 and 170 to 173 are not connected to the side plate portion 25. It is also possible. For example, as described above, the configuration without the side plate portion 25, or the configuration in which the upper end of the side plate portion 25 is formed at a position below the corner portions 7, 170 to 173, or the upper end portion of the side plate portion 25 is A configuration in which the upper end portion of the mouth portion 20 is spaced from the outer peripheral surface is conceivable.

  Further, in the above-described embodiment, the notch portion 4 is formed with the concave notch 40, the head 3 is disposed inside the notch 40, and the upper surface and both side surfaces of the head 3 are Although it is connected to the inner edge of the cutout portion 40 via the thin wall portion 6, the present invention is not limited to the above-described configuration. For example, a plate-like knob portion in which the cutout portion 40 is not formed. Is arranged above the head 3, and the lower side portion of the knob and the upper surface of the head 3 may be connected via the thin part 6, or the thin part 6 is not formed. Is also possible. Furthermore, the knob | pick part in this invention is not limited to a plate-shaped thing, For example, a rod-shaped or cylindrical shape, or a knob | pick part of another shape may be sufficient.

Moreover, in above-mentioned embodiment, while the upper part of the opening part 20 of the container main body 2 is diameter-reduced as it goes upwards, it is diameter-reduced gradually as the lower part of the surrounding wall part 31 of the head 3 goes downward. In addition, a substantially V-shaped breakable constricted portion 5 is formed between the mouth portion 20 and the head portion 3 of the container body 2, but the present invention is limited to the above-described configuration. For example, the connecting portion between the upper end of the mouth of the container body and the lower end of the head is not confined, and the upper end of the container main body and the lower end of the head correspond to the thin-walled portion (corresponding to the breaking portion of the present invention). ) May be used.
In the above-described embodiment, the lower end of the knob 4 and the upper end of the side plate portion 25 are connected via the weakening portion 27. However, in the present invention, the above-described weakening portion 27 can be omitted. Yes, the knob 4 and the side plate 25 may be separated.
In the above-described embodiment, the plate-shaped knob 4 is thicker than the side plate 25. However, in the present invention, the thickness of the knob 4 and the side plate 25 is the same. It is also possible to make the side plate portion 25 thicker than the knob portion 4.

  Moreover, in above-mentioned embodiment, although the head 3 has comprised the cylindrical shape which consists of the top wall part 30 and the surrounding wall part 31, the shape of the head in this invention can be changed suitably, for example, It may be a hollow head formed in a substantially conical shape, or may be a hollow head formed in a substantially spherical shape.

  In addition, in the range which does not deviate from the main point of this invention, it is possible to replace suitably the component in above-mentioned embodiment with a well-known component, and you may combine the above-mentioned modification suitably.

It is a front view of the ampule for demonstrating the 1st Embodiment of this invention. It is a side view of the ampule for demonstrating the 1st Embodiment of this invention. It is a front view of a plurality of ampoules for explaining a 1st embodiment of the present invention. It is a front view of the ampule for demonstrating the 2nd Embodiment of this invention. It is a side view of the ampule for demonstrating the 2nd Embodiment of this invention.

Explanation of symbols

1 Ampoule (resin ampoule)
2 Container body 3 Head 4 Pick section 5 Constricted section (breaking section)
7 corner portion 25 side plate portion 70 first convex corner portion (corner portion)
71 Recessed corner (corner)
72 Second convex corner (corner)
170-173 Convex corner (corner)

Claims (2)

A container main body that contains the contents; a head that is connected to the mouth of the container main body via a breakable portion and seals the mouth; and a knob connected to the head. In the resin ampoule provided,
The head has a hollow shape having an internal space communicating with the inside of the container body,
At least one of the head-side end portion of the mouth and the mouth-side end portion of the head is gradually reduced in diameter radially inward as approaching the fracture portion, and in the circumferential direction. An ampoule made of resin, characterized in that an extended corner is formed. In the resin ampule according to claim 1,
The corner is formed at least at the end on the head side of the mouth,
On the outer peripheral surface of the container main body, a side plate portion extending along the axial direction of the container main body is protruded,
A resin ampoule characterized in that the side plate portion and the corner portion are connected.

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