JP5848937B2 - Hinge cap - Google Patents

Description

  The present invention relates to a hinge cap attached to a container filled with contents such as seasonings and dressings. More specifically, the present invention relates to a hinge cap in which an inner stopper is attached to a container mouth, and a lid connected to the inner stopper by a hinge can be opened and closed.

  As a conventional general hinge cap, a spout portion for pouring the contents of the container into the inner stopper is provided, and the spout portion is closed with a pull ring in an unopened state. It is widely known to open the spout part by peeling off the pull ring.

  However, in the above-described general hinge cap, two operations, that is, an operation of opening the lid and an operation of peeling off the pull ring are necessary at the time of use. Therefore, a special hinge cap that does not use a pull ring has been developed in order to manage these operations once. As an example, there is one that automatically opens a spout portion that is blocked when unopened by an initial opening operation that is an opening operation (see Patent Document 1).

  As a specific configuration of Patent Document 1, the hinge cap includes a cap main body fixed to the container mouth portion and an upper lid connected to the cap main body by a hinge. And the extraction | sampling opening plan part which is scheduled to be formed by the first lid opening operation is provided in the top plate part of the cap main body. The spout opening planned portion is closed by a thin portion and a seal plate sequentially provided on the inner peripheral side until the first opening operation is performed. In addition, the outer peripheral edge of the seal plate in the vicinity of the thin-walled portion is welded to the lower end of a tearing tool that hangs down from the top plate of the upper lid.

  The hinge cap having such a configuration is attached to the container after the contents are filled and commercialized. Then, by performing the first opening operation on the hinge cap, the thin-walled portion was torn and the pouring opening was formed, and the seal plate that had blocked the pouring opening planned portion until then was joined to the tearing tool. The upper lid opens.

  Moreover, in the technique of patent document 1, the buffering protrusion hangs down from the outer peripheral side rather than the tearing tool on the top plate part of the upper lid, and the buffering protrusion comes into contact with the top plate part of the cap body when the upper cover is closed. As a result, the impact force when the tearing tool comes into contact with the seal plate is relaxed, and the thin portion is prevented from being damaged.

JP 2005-289389 A

  However, this buffering protrusion is only for reducing the impact force when the upper lid is closed. Therefore, when a force is applied from above and below to the sealing plate itself located inside the buffering protrusion, the thin portion may be damaged. This is because the hinge cap is welded to the tearing tool on the outer periphery of the seal plate, that is, in the vicinity of the thin-walled portion, so if force is applied to the seal plate directly above the tear tool or from below the seal plate, It is because it is transmitted to the thin part as it is.

  More specifically, for example, in the hinge cap configured as described above, the tearing tool is welded to the seal plate by performing high-frequency induction heating or the like with the upper lid closed after molding. However, when high-frequency induction heating is performed, vibration is generated, and the vibration portion is close to the thin portion, so that the thin portion may be damaged.

  Further, when selling contents (commodities) in a state where the container is filled, a seller or a customer may apply force to the top plate portion of the upper lid. Then, the force is transmitted to the lower end of the tearing tool, stress is directly applied to the thin portion in the vicinity thereof, and the thin portion may be damaged.

  As described above, it is not desirable that the thin wall portion is damaged before the hinge cap is opened for the first time (when the hinge cap is not opened), and the sealing performance is not maintained. The present invention was created in view of the above circumstances, and an object thereof is to reduce as much as possible the possibility that the thin-walled portion is damaged when not opened.

  The present invention includes a cylindrical inner plug side wall portion fitted to the outside of the container mouth portion, an annular inner plug top plate portion projecting inwardly from the inner periphery of the upper end portion of the inner plug side wall portion, and above and below the inner plug top plate portion. A cylindrical pouring wall section extending from the inside, and an inner stopper provided with an annular pouring outlet section provided inside the pouring wall section, a lid top plate portion, and a cylindrical shape depending from the outer peripheral edge of the lid top plate portion A lid provided with a cylindrical sealing wall portion that hangs down from the lid side wall portion and the lid top plate portion and comes into contact with the inner surface of the pouring wall portion, and a hinge that connects the lid so that the lid can be opened and closed In the unopened state, the seal plate portion is provided in a shape that closes the spout portion via an annular thin wall portion that can be damaged on the inner periphery of the spout portion. The lid top plate part is joined to the seal plate part after molding, and in the opened state by the first opening operation, the thin part is damaged and the spout The premise of the hinge cap inside to open.

In the present invention, the seal plate portion has an angled shape, and includes an annular peripheral wall portion that extends upward from the inner periphery of the thin portion, and a top portion that closes the upper end of the peripheral wall portion, and is bonded to the lid top plate portion. It is also assumed that the portion of the inner plug seal plate portion to be done is the top portion.

  The shape of the lid top plate is not limited. However, in order to prevent the thin-walled portion from being damaged by accidentally pressing the lid top plate when not opened, it is desirable to do the following. That is, the lid top plate portion is provided with a vessel-shaped depression, and the depression includes an annular peripheral wall portion that faces downward, and a bottom portion that closes the lower end of the peripheral wall portion, and the depression portion bottom portion is joined to the top portion of the seal plate portion. It is that you are.

  The shape of the peripheral wall portion of the seal plate portion is not limited. However, considering the ease of molding, a shape without undercut is desirable. For this purpose, it is desirable to do the following. That is, it is desirable that the peripheral wall portion of the seal plate portion has an inclined shape that expands toward the bottom.

  Further, the shape of the peripheral wall portion of the depression is not limited. However, considering the ease of molding, a shape without undercut is desirable. For this purpose, it is desirable to do the following. In other words, it is desirable that the depressed portion peripheral wall portion has an inclined shape that forms a bottom lip toward the bottom.

  Further, specific examples of bonding include welding and adhesion.

  According to the present invention, since the joint portion between the lid top plate portion and the top portion of the seal plate portion is separated from the thin portion by the amount of the peripheral wall portion of the seal plate portion, even if force is applied to the top portion of the seal plate portion. The force is not easily transmitted to the thin-walled portion, and as a result, the thin-walled portion is less likely to break compared to the conventional case.

  In addition, if a lid-like top plate part is provided with a bowl-like depression and the bottom of the depression is joined to the top, the top of the joint is depressed, and as a result, it is accidentally opened when unopened. It is possible to prevent the thin portion from being damaged by pressing the lid top plate portion. Furthermore, compared to the case where the lid plate is flattened and the seal plate portion is made to have a high chevron shape, if such a depression is provided, the seal plate portion can be made to have a lower chevron shape accordingly. The amount of contents attached to the inside of the seal plate after opening can be reduced.

  Furthermore, if the sealing plate has a sloping shape that expands toward the bottom, the inner plug can be opened simply by moving the movable mold linearly with respect to the fixed mold. easy.

  In addition, if the recessed part peripheral wall part of the lid top plate part is similarly inclined, the lid can be opened simply by moving the movable mold linearly with respect to the fixed mold. It is easy to mold as.

(A) and (B) are a cross-sectional view and a perspective view showing an unsealed state of the hinge cap according to the first embodiment. It is sectional drawing which shows the unopened state in 1st Embodiment of a hinge cap. (A), (B), and (C) are a plan view, a front view, and a right side view showing a state immediately after molding of the hinge cap according to the first embodiment. FIGS. 3A and 3B are cross-sectional views taken along lines AA and BB in FIG. (A), (B), and (C) are cross-sectional views showing an unopened state, an opened state , and a state immediately after molding in the second embodiment of the hinge cap.

  1 to 4 show a first embodiment of a hinge cap 10 of the present invention. FIG. 1 shows the hinge cap 10 in the unsealed state in which the lid 12 is opened for the first time, FIG. 2 shows the unopened state in which the lid 12 has not been opened, and FIGS. 3 and 4 show the hinge cap 10 in a state immediately after resin molding. ing. The hinge cap 10 of the present invention includes an inner stopper 11 attached to the container mouth, a lid 12 that can be opened and closed with respect to the inner stopper 11, and a hinge 13 that connects these. Hereinafter, the unopened state shown in FIG. 2 will be described in detail as a basic aspect for each of these components.

  The inner plug 11 is provided with a cylindrical outer wall portion 21, a side wall portion 22, and a dispensing wall portion 23 that are concentrically spaced from the outer peripheral side toward the inner peripheral side. The upper end portion of the outer wall portion 21 and the upper end portion of the side wall portion 22 are connected by a joint portion 24, and the upper end portion of the side wall portion 22 and the middle height portion of the extraction wall portion 23 are connected by an annular top plate portion 25. Has been. A cylindrical locking wall portion 26 extends upward from the outer peripheral edge portion of the top plate portion 25, and an annular spout portion 27 protrudes inward from the inside of the spout wall portion 23. A thin portion 28 that is damaged when opened is provided over the entire inner periphery of the spout portion 27, and a seal plate portion 29 that closes the spout portion 27 in an unopened state is provided inside the thin portion 28. Yes. The configuration of the inner plug 11 having such an outline will be further described in detail.

  The outer wall portion 21 extends below the side wall portion 22 and is thinner than the side wall portion 22. Further, the joint portion 24 is continuous between the outer wall portion 21 and the side wall portion 22 by a circular arc portion 24a for a partial region of the entire circumference in the circumferential direction, and a plurality of bridging portions 24b for other regions. Are continuously laid out radially at intervals in the circumferential direction. When the used hinge cap 10 is removed from the container and discarded, if the lid 12 is pulled upward, the bridging portion 24b is broken, and the outer wall portion 21 of the damaged outer portion is lifted, and the inner plug 11 Becomes easy to come off from the container mouth.

  The side wall portion 22 has a wedge-shaped retaining portion 22a projecting inwardly on the inner peripheral surface thereof, and is fitted to the outer periphery of the container mouth portion by the retaining portion 22a. Further, the side wall portion 22 is provided with slits 22b at equal intervals over the entire circumference in the circumferential direction. Each slit 22b reaches from the upper side to the lower end of the side wall part 22 above the retaining part 22a, and penetrates in the thickness direction of the side wall part 22. By these slits 22b, the lower portion of the side wall portion 22 is easily opened to the outer peripheral side, and is easily attached to and detached from the container mouth portion.

  The top plate portion 25 is a portion that covers the upper end surface of the container mouth portion. The locking wall portion 26 is a portion that fits to the lid 12 so as to be openable and closable, and a locking projection 26a protrudes outward from the upper portion thereof. A locked protrusion 32a that fits detachably on the locking protrusion 26a protrudes inward from the lower end of the side wall 32 of the lid 12 described later.

  The pouring wall portion 23 extends vertically from the inside of the top plate portion 25, and includes an upper upper pouring wall portion 23a and a lower lower pouring wall portion 23b. Of these, the lower pouring wall portion 23b is fitted into the inner peripheral surface of the container mouth portion. On the other hand, the upper pouring wall portion 23a has a cylindrical shape as described above. More specifically, the upper pouring wall portion 23a is formed such that the side close to the hinge 13 is low and the side opposite to the hinge 13 is high. Then, it has an arc shape.

  In the example shown in the drawing, the outline of the inner periphery of the spout portion 27 has an elongated rhombus shape whose corners are rounded and chamfered. And the thin part 28 is provided in cyclic | annular form over the perimeter of the inner periphery of the spout part 27, and it can be damaged at the time of opening by the thin shape.

  The sealing plate portion 29 has a mountain shape, and a flat top portion 29a at the center thereof is higher than the inner plug top plate portion 25 and has a similar shape in which the spout 27 is reduced, and the outer peripheral edge portion of the top portion 29a. A cylindrical peripheral wall portion 29b is provided to hang down. The peripheral wall portion 29b is inclined in a divergent shape as it goes downward from the outer periphery of the top portion 29a.

  Next, the lid 12 will be described in detail. The lid 12 includes a circular top plate portion 31 and a cylindrical side wall portion 32 depending from the outer peripheral edge of the top plate portion 31 as main components.

  The lid side wall portion 32 is disposed such that the lower end surface thereof overlaps the inner plug outer wall portion 21. At the lower end of the lid side wall portion 32, a flange portion 32b is provided so as to protrude outwardly on the side opposite to the hinge 13, and when viewed in plan, the flange portion 32b has an arc shape.

  The lid top plate portion 31 is provided with a circular vessel-shaped depressed portion 31a at the center (a portion facing the seal plate portion 29). The cap is an integrally molded product of plastic produced by injection molding or the like, and is provided with the bottom 31b of the depressed portion 31a in contact with the seal plate top 29a when the lid 12 is closed immediately after molding. . Moreover, the peripheral wall part 31c which has fallen toward the bottom part 31b among the depression parts 31a inclines in the form which becomes a bottom constriction as it goes below. In the closed state after opening, the cylindrical sealing wall portion 33 hangs concentrically from the depressed portion peripheral wall portion 31c, and the lower end of the sealing wall portion 33 strongly contacts the inner surface of the extraction wall portion 23. The inside of the extraction wall portion 23 is sealed.

  The bottom 31b of the depression 31a and the seal plate top 29a are joined by welding (ultrasonic welding, high frequency welding, etc.) or adhesion after plastic molding of the hinge cap. In the case of ultrasonic welding or the like, ultrasonic welding is performed while an ultrasonic welding vibrator is applied to one of the upper surface of the depressed portion 31a and the lower surface of the seal plate portion 29 and a jig is applied to the other. Then, the bottom part 31b of the depressed part 31a and the seal plate part top part 29a are melted and joined and integrated.

  Finally, the hinge 13 will be described in detail. The hinge 13 is composed of a plate-like object 13a that can be refracted at an intermediate portion of the length, and a thin strip-like object 13b that can be bent. Each of the hinges 13 is connected to the inner plug 11 and the other end is connected to the lid 12. Is provided. More specifically, the plate-like object 13a is arranged in the center, and the band-like objects 13b are arranged on both sides of the plate-like object 13a with an interval between them. It is provided continuously at the lower end of the side wall portion 32.

  The form at the time of shaping | molding the hinge cap 10 mentioned above is shown by FIG. 3, FIG. This form is a shape without an undercut. Therefore, the mold can be opened simply by moving the movable mold linearly with respect to the fixed mold. The hinge cap 10 has several portions that protrude in the direction intersecting the mold opening direction, but the amount of protrusion is short, and the slit 22b is formed on the inner plug side wall portion 22 as described above. Since it is provided, even if there is a retaining portion 22a of the inner plug side wall portion 22, the mold can be opened by utilizing deformation due to the elasticity of the synthetic resin. In addition, the sealing plate portion 29 has no such protruding portion and has the above-mentioned divergent form, so that the load at the time of mold opening is not applied to the thin-walled portion 28, and at the time of molding (when the mold is opened). Prevents damage. Similarly, the cover depression 31a has no protruding portion.

The hinge cap 10 described above is manufactured and opened in the following manner.
(1) In the state immediately after plastic molding of the hinge cap 10 (the state accommodated in the mold), as shown in FIGS. 3 and 4, the lid 12 is opened and arranged next to the inner plug 11. At this time, the inner plug seal plate portion 29 and the lid recess portion 31a both have a wide-angled shape with no undercut.
(2) When the lid 12 is closed with respect to the hinge cap 10 removed from the mold, the bottom 31b of the lid recess 31a is in surface contact with the top 29a of the inner plug seal plate 29 as shown in FIG.
(3) Thereafter, the bottom 31b of the lid recess 31a and the top 29a of the inner plug seal plate 29 are joined by ultrasonic welding or the like.
(4) The hinge cap 10 thus completed is fitted into the container opening filled with the contents.
(5) When the side wall portion flange portion 32b of the lid 12 is pushed up for opening, the lid 12 opens with the hinge 13 as a fulcrum as shown in FIG. The inside is opened and the contents can be poured. Then, the seal plate portion 29 remains attached to the lid top plate portion 31.

  FIG. 5 shows a second embodiment of the hinge cap 10 of the present invention. The difference from the first embodiment is that the lid top plate portion 31 has a flat shape without the recessed portion 31a, and the inner plug seal plate portion 29 has a high chevron shape.

  The present invention is not limited to the above embodiment. For example, as means for joining the lid top plate portion 31 and the inner plug seal plate portion 29, welding by ultrasonic waves or high frequency is used, but not limited thereto, adhesion may be used. Moreover, the shape of the spout 27 is not limited to a rhombus, but may be other shapes.

10 Hinge Cap 11 Inner Plug 12 Lid 13 Hinge 13a Plate 13b Strip 21 Outer Wall 22 Side Wall 22a Detachment 22b Slit 23 Pouring Wall 23a Upper Pouring Wall 23b Lower Pouring Wall 24 Joint 24a Arc portion 24b Bridge portion 25 Top plate portion 26 Locking wall portion 26a Locking projection portion 27 Outlet portion 28 Thin portion 29 Seal plate portion 29a Top portion 29b Perimeter wall portion 31 Top plate portion 31a Depressed portion 31b Bottom portion 31c Peripheral wall portion 32 Side wall portion 32a Locking protrusion 32b Hook 33 Sealing wall

Claims (6)

Cylindrical inner plug side wall to be fitted to the outside of the container mouth, an annular inner plug top plate projecting inward from the inner periphery of the upper end of the inner plug side wall, and a cylindrical shape extending up and down the inner plug top plate A spout wall portion, and an inner stopper provided with an annular spout portion provided inside the spout wall portion;
A lid top plate portion, a cylindrical lid side wall portion that hangs down from the outer peripheral edge of the lid top plate portion, and a cylindrical sealed wall portion that hangs down from the lid top plate portion and contacts the inner surface of the extraction wall portion A lid provided;
It is an integrally molded product with a hinge that connects the lid to the inner plug so as to be opened and closed,
In the unopened state, the seal plate portion is provided in a shape that closes the spout portion via an annular thin wall portion that can be damaged on the inner periphery of the inner plug spout portion. The lid top plate is joined after molding,
In the opening state by the first lid opening operation, in the hinge cap where the thin wall portion is damaged and the inside of the spout portion is opened,
The seal plate portion has a chevron shape, and includes an annular peripheral wall portion that extends upward from the inner periphery of the thin portion, and a top portion that closes the upper end of the peripheral wall portion,
Site of inner plug seal plate portion joined to the lid top panel section, Ri apex der,
A bowl-shaped depression is provided on the lid top plate,
The depressed portion includes a ring-shaped peripheral wall portion facing downward, and a bottom portion that closes a lower end of the peripheral wall portion, and the depressed portion bottom portion is joined to the top portion of the seal plate portion . Cylindrical inner plug side wall to be fitted to the outside of the container mouth, an annular inner plug top plate projecting inward from the inner periphery of the upper end of the inner plug side wall, and a cylindrical shape extending up and down the inner plug top plate A spout wall portion, and an inner stopper provided with an annular spout portion provided inside the spout wall portion;
A lid top plate portion, a cylindrical lid side wall portion that hangs down from the outer peripheral edge of the lid top plate portion, and a cylindrical sealed wall portion that hangs down from the lid top plate portion and contacts the inner surface of the extraction wall portion A lid provided;
It is an integrally molded product with a hinge that connects the lid to the inner plug so as to be opened and closed,
In the unopened state, the seal plate portion is provided in a shape that closes the spout portion via an annular thin wall portion that can be damaged on the inner periphery of the inner plug spout portion. The lid top plate is joined after molding,
In the opening state by the first lid opening operation, in the hinge cap where the thin wall portion is damaged and the inside of the spout portion is opened,
The seal plate portion has a chevron shape, and includes an annular peripheral wall portion that extends upward from the inner periphery of the thin portion, and a top portion that closes the upper end of the peripheral wall portion,
Site of inner plug seal plate portion joined to the lid top panel section, Ri apex der,
A hinge cap characterized in that the peripheral wall of the seal plate has an inclined shape that expands toward the bottom . A bowl-shaped depression is provided on the lid top plate,
3. The hinge cap according to claim 2, wherein the depressed portion includes an annular peripheral wall portion directed downward and a bottom portion that closes a lower end of the peripheral wall portion, and the depressed portion bottom portion is joined to the top portion of the seal plate portion . 4. The hinge cap according to claim 1, wherein the depressed portion peripheral wall portion has an inclined shape that forms a bottom lip toward the bottom. 5.   The hinge cap according to claim 1, 2, 3, or 4, wherein the joining is welding.   The hinge cap according to claim 1, 2, 3, or 4, wherein the joining is adhesion.

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