JP2021050034A - Container lid - Google Patents

Abstract

To provide a novel synthetic resin container lid in which (1) sealing of a discharge opening by a sealing wall is not damaged even if a container is dropped or rolled over while the container lid is attached to a mouth and neck of the container, and (2) the sealing wall of an inner plug is smoothly guided into a discharge cylinder of a lid body when an outer lid is moved in conjunction with the inner plug from an open position to a close position.SOLUTION: An elastic piece 44 that elastically deflects an inner plug 8 downward with respect to a top wall 38 of an outer lid 6, is attached to an inner surface of the top wall 38 of the outer lid 6 or an upper surface of a base wall 66 of the inner plug 8.SELECTED DRAWING: Figure 1

Description

In the present invention, the lid body attached to the mouth and neck of the container, the outer lid and the inner plug rotatably connected to the lid body between the closed position covering the lid body and the open position exposing the lid body. The present invention relates to a synthetic resin container lid provided with.

As disclosed in Patent Documents 1 and 2 below, as a container lid applied to the mouth and neck of a container for liquid seasonings, beverages, etc., a lid body attached to the mouth and neck of the container, the lid body. Disclosed is an outer lid connected to the lid body so as to be swivelable between a closed position covering the lid body and an open position for exposing the lid body, and a container lid provided with an inner plug. The lid body includes a top wall and a tubular mounting wall connected to the periphery of the top wall, and the top wall is formed with a discharge opening and a cylinder extending upward from the outer peripheral edge of the discharge opening. A shape discharge cylinder is formed, and the mounting wall is fitted to the mouth and neck of the container to be mounted on the mouth and neck of the container. The outer lid includes a top wall, a skirt wall hanging from the periphery of the top wall, and a tubular engaging wall hanging from the inner surface of the top wall in the radial direction inward from the skirt wall. The inner plug includes a base wall and a tubular sealing wall hanging from the base wall. Then, the discharge opening is sealed by inserting the sealing wall of the inner plug into the discharge cylinder attached to the top wall of the lid body, and the outer lid is moved from the closed position to the open position. When the outer lid is opened, the engaging wall of the outer lid engages with the inner plug, so that the inner plug is also opened and moved along with the opening of the outer lid, and the inner plug is moved to the lid body. It is separated from the discharge cylinder.

Japanese Unexamined Patent Publication No. 2014-162499 Japanese Unexamined Patent Publication No. 2017-13830

Thus, in the conventional container lid disclosed in Patent Document 1, the base wall of the inner plug is in a state where the sealing wall of the inner plug is inserted into the discharge cylinder of the lid main body and the outer lid is in the closed position. Due to the separation between the upper surface of the container and the lower surface of the top wall of the outer lid, if the container lid is dropped or rolled over while it is attached to the mouth and neck of the container, the inner plug will move upward with respect to the lid body due to impact. There is a risk that the sealing of the discharge opening by the sealing wall will be damaged and the contents will flow out.

Further, in the conventional container lid disclosed in Patent Document 1 and Patent Document 2, when the outer lid is closed from the open position to the closed position with the inner lid, the inner lid is attached to the outer lid. Due to the fact that it is movable in the vertical and horizontal directions, that is, it has so-called backlash, the lower end of the sealing wall of the inner plug is in contact with the upper end of the outer lid on the turning center side of the discharge cylinder of the lid body. The contact may change the attitude of the inner plug with respect to the outer lid, and the sealing wall of the inner plug may not be smoothly guided into the discharge cylinder of the lid body.

The present invention has been made in view of the above facts, and its main technical problems are (1) a discharge opening due to a sealing wall even if the container lid is dropped or overturned while being attached to the mouth and neck of the container. The seal is not damaged, and (2) the sealing wall of the inner plug is smoothly guided into the discharge tube of the lid body when the outer lid is closed from the open position to the closed position with the inner lid. To provide a new and improved synthetic resin container lid.

As a result of diligent studies, the present inventors have attached an elastic piece on the inner surface of the top wall of the outer lid or the upper surface of the base wall of the inner plug to elastically deflect the inner plug downward with respect to the top wall of the outer lid. It was found that the above-mentioned main technical problems can be achieved by doing so.

That is, according to the present invention, as a container lid that achieves the above-mentioned main technical problem, a lid main body attached to the mouth and neck of the container, a closed position that covers the lid main body, and an open position that exposes the lid main body. It is provided with an outer lid and an inner plug connected to the lid body so as to be swivelable between them.
The lid body includes a top wall and a tubular mounting wall connected to the periphery of the top wall, and the top wall is formed with a discharge opening and a cylinder extending upward from the outer peripheral edge of the discharge opening. A shape discharge cylinder is formed, and the mounting wall is fitted to the mouth and neck of the container to be mounted on the mouth and neck of the container.
The outer lid includes a top wall, a skirt wall hanging from the periphery of the top wall, and a tubular engaging wall hanging from the inner surface of the top wall in the radial direction inward from the skirt wall.
The inner plug includes a base wall and a tubular sealing wall hanging from the base wall.
The discharge opening is sealed by inserting the sealing wall of the inner plug into the discharge cylinder attached to the top wall of the lid body, and the outer lid is opened from the closed position to the open position. Then, when the engaging wall of the outer lid engages with the inner plug, the inner plug is also opened and moved along with the opening of the outer lid, and the inner plug is moved to the discharge cylinder of the lid body. In the synthetic resin container lid that is separated from
An elastic piece that elastically deflects the inner plug downward with respect to the top wall of the outer lid is attached to the inner surface of the top wall of the outer lid or the upper surface of the base wall of the inner plug. ,
A synthetic resin container lid is provided.

Preferably, the base wall of the inner plug has a circular plate shape, and the engaging wall of the outer lid is formed with an engaging ridge having an inner diameter smaller than the outer diameter of the base wall of the inner plug. When the outer lid is closed to the closed position while the sealing wall of the inner plug is inserted into the discharge cylinder of the lid body, the engaging ridge of the engaging wall becomes said. When it elastically overcomes the base wall and is located below the base wall and the outer lid is opened from the closed position to the open position, the engaging ridge of the engaging wall becomes the inner plug of the inner plug. Engage with the base wall. In this case, the base wall of the inner plug is circular and has an outer diameter larger than the outer diameter of the upper end of the discharge cylinder of the lid body, and the engaging wall of the outer lid is cylindrical. It is preferable that the inner diameter of the engaging ridge is larger than the outer diameter of the upper end of the discharge cylinder of the lid body and smaller than the outer diameter of the base wall of the inner plug. Preferably, the elastic piece hangs from the inner surface of the top wall in a radial direction inside the engaging wall, abuts on the outer surface of the base wall of the inner plug, and elastically deflects the inner plug downward. To do. In this case, at least the lower portion of the elastic piece may extend downward in a radial direction so as to be inclined outward or inward in a free state. In addition, the elastic piece extends continuously in the circumferential direction, and in a free state, a cone extending downward in parallel with the axial direction and extending downward in a radial direction outward or inward. It is convenient to have a truncated cone or an inverted truncated cone shaped lower part. Preferably, the outer lid is formed with limiting protrusions that project from the inner surface of the top wall and limit the rise of the inner plug of the outer lid to the top wall. The lid body and the outer lid may be integrally molded, and the inner plug may be molded separately from the lid body and the outer lid.

In the container lid of the present invention, an elastic piece is attached to the inner surface of the top wall of the outer lid or the upper surface of the base wall of the inner plug to elastically deflect the inner plug downward with respect to the top wall of the outer lid. (1) When the sealing wall of the inner plug is inserted into the discharge cylinder of the lid body and the outer lid is in the closed position, the inner plug is pressed against the upper end of the discharge cylinder by the elastic piece. Therefore, even when the container to which the container lid of the present invention is attached falls or falls and an impact is applied to the container lid, the sealing of the discharge opening by the sealing wall is maintained and the contents do not flow out. Prevented, (2) When the outer lid is closed from the open position to the closed position with the inner lid, the movement of the inner plug with respect to the outer lid is restricted by the cooperation between the elastic piece and the engaging wall. Therefore, even if the lower end of the sealing wall of the inner plug comes into contact with the upper end of the discharge cylinder of the lid body, the posture of the inner plug with respect to the outer lid is maintained, and the sealing wall of the inner plug smoothly enters the discharge cylinder of the lid body. You will be guided.

FIG. 6 is a cross-sectional view of a preferred embodiment of a container lid configured according to the present invention. FIG. 3 is a cross-sectional view of the container lid shown in FIG. 1 in a state in which the lid body and the outer lid are integrally molded. The plan view of the container lid shown in FIG. 1 in a state where the lid body and the outer lid are integrally molded. The bottom view of the container lid shown in FIG. 1 in a state where the lid body and the outer lid are integrally molded. The figure which shows the inner plug of the container lid shown in FIG. 1 by itself. The figure explaining the process of combining a lid body, an outer lid and an inner plug. The figure explaining the usage style of the container lid shown in FIG. The figure which shows the modification of the container lid constructed according to this invention.

Hereinafter, the description will be made in more detail with reference to the accompanying drawings illustrating preferred embodiments of the container lid configured according to the present invention.

Explaining with reference to FIG. 1, the container lid, which is configured according to the present invention and is indicated by No. 2 as a whole, includes a lid main body 4, an outer lid 6, and an inner plug 8. In the illustrated embodiment, the lid body 4 and the outer lid 6 are integrally molded, and the inner plug 8 is molded separately from the lid body 4 and the outer lid 6. The lid body 4 and the outer lid 6 are formed by injection molding from a relatively soft synthetic resin such as polyethylene, and the inner plug 8 is formed by injection molding from a relatively hard synthetic resin such as high-density polyethylene or polypropylene. Has been done. The outer lid 6 has a closed position for covering the lid body 4 (state shown in FIGS. 1 and 7 (c)) and an open position for exposing the lid body 4 (FIGS. 6 and 7) to the lid body 4 via a hinge means 10. It is rotatably connected to (the state shown in (a)).

Explaining with reference to FIGS. 2 to 4 together with FIG. 1, the lid main body 4 includes a top surface wall 12 and a tubular mounting wall 14 connected to the peripheral edge of the top surface wall 12. The top wall 12 is circular in a plan view, and a circular discharge opening 16 is formed in the central portion thereof. The center of the discharge opening 16 is slightly eccentric with respect to the center of the top wall 12 on the side opposite to the hinge means 10 in the radial direction (left side in FIGS. 1 to 4). The discharge opening 16 is provided with spokes 18 that extend radially outward from the center and are connected to the inner peripheral surface of the top wall 12. At the center of the spoke 18, an inlet (so-called gate) of a synthetic resin in a molten state when the lid body 4 and the outer lid 6 are molded by injection molding is provided, and the spoke 18 is described above. It constitutes a flow path of the synthetic resin in a molten state. On the upper surface of the top wall 12, a tubular discharge cylinder 20 extending upward from the outer peripheral edge of the discharge opening 16 is formed. The discharge cylinder 20 has a cylindrical shape as a whole, and the upper end portion 22 thereof is curled outward in the radial direction. The upper end portion 22 will be further described later. A ring-shaped ridge 23 that projects inward in the radial direction is formed slightly below the upper end portion 22 on the inner peripheral surface of the discharge cylinder 20. A tubular seal wall 24 that rises upward is formed on the outer peripheral edge of the upper surface of the top wall 12. The upper end position of the seal wall 24 is lower than the upper end position of the discharge cylinder 20, and an annular locking ridge 26 protruding outward in the radial direction is formed at the upper end of the seal wall 24. A cylindrical seal piece 28 extending downward is formed on the lower surface of the top wall 12. The seal piece 28 is provided between the seal wall 24 and the discharge cylinder 20 when viewed in the radial direction. An annular recesses 30a and 30b are formed on the upper surface and the lower surface of the top wall 12, respectively.

The mounting wall 14 has a cylindrical shape as a whole. The inner diameter of the lower part of the inner peripheral surface of the mounting wall 14 is larger than the inner diameter of the upper part, and the lower part and the upper part are connected by an intermediate portion of a truncated cone shape that is inclined inward in the radial direction toward the upper side. There is. At the lower end of the inner peripheral surface of the mounting wall 14, a plurality of fitting ridges 32 protruding inward in the radial direction are formed at intervals in the circumferential direction. One end of the hinge means 10 is connected to the upper end of the outer peripheral surface of the mounting wall 14. At the upper end of the outer peripheral surface of the mounting wall 14, on the side opposite to the hinge means 10 in the diametrical direction, a first notch 34 having a relatively large reduction in outer diameter is formed in an arc shape. Below the first notch 34, a second notch 36 having a relatively small outer diameter and reduced in diameter is also formed in an arc shape.

The outer lid 6 includes a top wall 38, a skirt wall 40 hanging from the peripheral edge of the top wall 38, and a tubular engaging wall 42 hanging from the inner surface of the top wall 38 in the radial direction inward from the skirt wall 40. Includes. Here, the vertical, horizontal, and inner / outer directions of the outer lid 6 will be described below with reference to the state in which the outer lid 6 is in the closed position unless otherwise specified.

The top wall 38 is generally circular, but its outer peripheral edge is curved downward in a radial direction in an arc shape. In the container lid of the present invention, an elastic piece 44 that elastically deflects the inner plug 8 downward with respect to the top wall 38 of the outer lid 6 is attached to the inner surface of the top wall 38 of the outer lid 6. It is important to be there. In the illustrated embodiment, the elastic piece 44 hangs from the inner surface of the top wall 38 in the radial direction inside the engaging wall 42, and has a cylindrical upper portion 46 extending downward in parallel in the axial direction in a free state. It has a truncated cone-shaped lower portion 48 extending downwardly and radially outward, and the elastic piece 44 extends continuously in the circumferential direction. If desired, a plurality of elastic pieces 44 may be provided at angular intervals in the circumferential direction instead of extending continuously in the circumferential direction. Further, the elastic piece may extend at least in a free state so as to be inclined outward or inward in the radial direction in the downward direction. Therefore, omitting the cylindrical upper part 46, the elastic piece is a top wall. It may extend from the inner surface of 38 so as to be inclined outward in the radial direction downward. Furthermore, the elastic piece may extend inwardly inwardly inwardly at least in a free state at least in a radial direction. In this case, the elastic piece should have an upper cylindrical shape extending downward in parallel in the axial direction and an inverted truncated cone-shaped lower portion extending downward in the radial direction inwardly in a free state. You can also. The magnitude of the elastic force of the elastic piece 44, that is, the force by which the elastic piece 44 deflects the inner plug 8 downward with respect to the top wall 38 of the outer lid 6 will be described later.

An annular groove 50 is further formed on the inner surface of the top wall 38 along the inner peripheral edge of the elastic piece 44. The cross-sectional shape of the groove 50 is substantially rectangular. An annular limiting projection 52 that projects downward is also formed between the engaging wall 42 and the elastic piece 44. The cross-sectional shape of the limiting protrusion 52 is substantially square, and the lower end position of the limiting protrusion 52 is located between the upper end position and the lower end position of the lower 48 of the elastic piece 44 in the free state when viewed in the vertical direction. .. If desired, a plurality of limiting protrusions 52 may be provided at intervals in the circumferential direction instead of being annular. Such a limiting protrusion 52 will be further described later. The engaging wall 42 has a cylindrical shape, and an engaging ridge 54 extending radially inward downward is formed at the lower end portion thereof. As understood by referring to FIG. 1, the inner diameter of the engaging ridge 54 is larger than the outer diameter of the upper end of the discharge cylinder 20 of the lid body 4, and more specifically, the inner diameter of the engaging ridge 54 is the discharge cylinder. It is larger than the maximum outer diameter of the upper end portion 22 of 20 and smaller than the outer diameter of the base wall of the inner plug 8 described later. Here, the concave groove 50, the elastic piece 44, the limiting protrusion 52, and the engaging wall 42 are arranged concentrically, and the center thereof corresponds to the discharge opening 16 (and the discharge cylinder 20) of the lid main body 4. It is slightly eccentric to the center of the top wall 38 on the side opposite to the hinge means 10 in the radial direction (left side in FIG. 1, right side in FIGS. 2 and 3).

The skirt wall 40 has a cylindrical shape, and the other end of the hinge means 10 is connected to the lower end of the outer peripheral surface thereof. A known annular discard undercut 56 is formed in the vertical intermediate portion of the inner peripheral surface of the skirt wall 40. For the discarded undercut, refer to Japanese Patent Application Laid-Open No. 2003-2348, which was filed and published before the present application by the applicant of the present application, for example. Below the discard undercut 56, an annular locked ridge 58 that locks to the locking ridge 26 of the seal wall 24 of the lid body 4 is formed. On the outer peripheral surface of the skirt wall 40, a flange portion 60 is formed at the lower end portion on the side opposite to the hinge means 10 in the radial direction so as to project outward in the radial direction and on which the user's finger can be placed. On the lower end surface of the skirt wall 40, on the side opposite to the hinge means 10 in the radial direction, an arc-shaped hanging piece 62 that hangs downward is formed. Further, four protrusions 64 are formed on the lower end surface of the skirt wall 40 at intervals in the circumferential direction.

Continuing the description with reference to FIG. 1 and FIG. 5, the inner plug 8 includes a base wall 66 and a tubular sealing wall 68 hanging from the base wall 66. The base wall 66 has a circular plate shape, and the outer peripheral edge portion of the upper surface thereof is inclined downward in the radial direction. The outer diameter of the base wall 66 has an outer diameter larger than the outer diameter of the upper end of the discharge cylinder 20 of the lid main body 4, and more specifically, the outer diameter of the upper end portion 22 curled outward in the radial direction. .. The sealing wall 68 has a cylindrical shape, and its outer diameter is the same as or slightly larger than the inner diameter of the discharge cylinder 20 of the lid body 4, and the sealing wall 68 is elastically deformed to some extent and press-fitted into the discharge cylinder 20. It is possible.

Continuing the description with reference to FIGS. 6 and 1, the inner plug 8 is combined with the lid main body 4 and the outer lid 6 as follows. That is, first, as shown in FIG. 6, the inner plug 8 and the lid main body 4 are inserted into the discharge cylinder 20 provided with the sealing wall 68 of the inner plug 8 on the top wall 12 of the lid main body 4, and the inner plug 8 is inserted. The lower surface of the base wall 66 of the above is combined so as to be in contact with the upper end of the discharge cylinder 20. At this time, the outer diameter of the sealing wall 68 is the same as or slightly larger than the inner diameter of the discharge cylinder 20, and the inner peripheral surface of the discharge cylinder 20 is formed with a ridge 23 protruding inward in the radial direction. The outer peripheral surface of the sealing wall 68 is strongly in close contact with the inner peripheral surface of the discharge cylinder 20, and the discharge opening 16 is sealed. Next, the outer lid 6 is closed from the open position to the closed position, and as shown in FIG. 1, the engaging ridge 54 of the engaging wall 42 elastically overcomes the base wall 66 of the inner plug 8 from the base wall 66. Also located below. At this time, the engaging ridge 54 can easily get over the base wall 66 because the upper surface of the outer peripheral edge portion of the base wall 66 is inclined downward in the radial direction. .. In the state shown in FIG. 1, the elastic piece 44 attached to the inner surface of the top wall 38 of the outer lid 6 abuts on the upper surface of the base wall 66 of the inner plug 8 and elastically deflects the inner plug 8 downward. Let me. At this time, it is preferable that the elastic piece 44 is aligned with the sealing wall 68 of the inner plug 8. In the illustrated embodiment, the lower 48 of the elastic piece 44 is located above the sealing wall 68, as is clearly understood by reference to FIG. Thus, the inner plug 8 is combined with the lid body 4 and the outer lid 6.

The container lid 2 as described above is attached to the mouth and neck 70 of the container, which can be formed from an appropriate synthetic resin such as glass or polyethylene terephthalate, as shown by the alternate long and short dash line in FIG. The mouth neck 70 has a substantially cylindrical shape with an open upper surface, and an annular mating ridge 72 is formed at the upper end of the outer peripheral surface thereof. The container lid 2 is attached to the mouth and neck 70 by inserting the seal piece 28 of the lid body 4 into the mouth and neck 70 and fitting the mounting wall 14 on the outer periphery of the mouth and neck 70. At this time, the outer peripheral surface of the seal piece 28 is brought into close contact with the inner peripheral surface of the mouth neck 70. The fitting ridge 32 formed on the inner peripheral surface of the mounting wall 14 elastically overcomes the fitted ridge 72 of the mouth neck 70 and is locked to the fitting ridge 72, and is locked to the mouth neck 70 of the container. The container lid 2 is held in the container lid 2. Here, in the container lid of the present invention, an elastic piece 44 that elastically deflects the inner plug 8 downward with respect to the top wall 38 of the outer lid 6 is attached to the inner surface of the top wall 38 of the outer lid 6. In a state where the sealing wall 68 of the inner plug 8 is inserted into the discharge cylinder 20 of the lid main body 4 and the outer lid 6 is in the closed position, the inner plug 8 is connected to the discharge cylinder 20 by the elastic piece 44. Since the container lid of the present invention is pressed against the upper end of the container, the discharge opening 16 is kept sealed by the sealing wall 68 even when the container to which the container lid of the present invention is attached falls or falls and an impact is applied to the container lid 2. And the contents are prevented from leaking. Further, in the illustrated embodiment, the inner plug 8 is temporarily attached to the lid main body 6 by the above impact because the limiting protrusion 52 protruding downward is formed on the inner surface of the top wall 38 of the outer lid 6. On the other hand, even if it moves upward, it is restricted that the inner plug 8 rises excessively. From this point as well, the sealing of the discharge opening 16 by the sealing wall 68 is maintained, and the outflow of the contents is prevented.

Subsequently, the usage mode of the container lid of the present invention will be described with reference to FIGS. 1 and 7.
When consuming the contents of the container from the state shown in FIG. 1, first, a finger is put on the collar portion 60 and the outer lid 6 located at the closed position is forced upward to force the skirt wall of the outer lid 6 upward. The locked ridge 58 formed on the 40 elastically overcomes the locking ridge 26 formed on the seal wall 24 of the lid body 4. Then, when the outer lid 6 is opened from the closed position to the open position, the outer lid 6 is swiveled around the hinge means 10 as the turning center, and the engaging ridge 54 of the outer lid 6 is attached to the base wall 66 of the inner plug 8. By engaging, the inner plug 8 is also opened and moved along with the rotation of the outer lid 6, and the inner plug 8 is separated from the discharge cylinder 20 of the lid main body 6. Thus, as shown in FIG. 7A, the discharge opening 16 of the top wall 12 is exposed. After that, if the container is appropriately tilted, the contents in the container are guided to the discharge cylinder 20 after passing through the discharge opening 16 and discharged. When the discharge opening 16 is sealed again after discharging a predetermined amount of the contents, as shown in FIG. 7B, the outer lid 6 with the inner plug 8 attached to the hinge means 10 as the turning center is swiveled and closed. , The sealing wall 68 of the inner plug 8 is inserted into the discharge cylinder 20 of the lid main body 6. At this time, in the container lid of the present invention, an elastic piece 44 that elastically deflects the inner plug 8 downward with respect to the top wall 38 of the outer lid 6 is attached to the inner surface of the top wall 38 of the outer lid 6. When the outer lid 6 is closed from the open position to the closed position with the inner plug 8, the elastic piece 44 and the engaging wall 42 (engaging ridge 54) are combined. Since the movement of the inner plug 8 with respect to the outer lid 6 is restricted by the operation, even if the lower end of the sealing wall 68 of the inner plug 8 comes into contact with the upper end of the discharge cylinder 20 of the lid body 6, the inner plug 8 with respect to the outer lid 6 The posture is maintained, and the sealing wall 68 of the inner plug 8 is smoothly guided into the discharge cylinder 20 of the lid main body 6. Then, when the outer lid 6 is closed again, the discharge opening 16 is sealed again. At this time, the elastic force of the elastic piece 44, that is, the force by which the elastic piece 44 deflects the inner plug 8 downward with respect to the top wall 38 of the outer lid 6, is such that the sealing wall 68 of the inner plug 8 is the inner circumference of the discharge cylinder 20. It is not large enough to elastically overcome the ridges 23 formed on the surface and therefore the limitations formed on the underside of the top wall 38 of the outer lid 6 as understood by reference to FIG. 7 (c). The protrusion 52 abuts on the upper surface of the base wall 66 of the inner plug 8, but the lower surface of the base wall 66 of the inner plug 8 does not abut on the upper end of the discharge cylinder 20 of the lid body 4, and the lower surface of the base wall 66 and the discharge cylinder There will be some gap between the top of 20 and the top. Therefore, when the state shown in FIG. 7 (c) (resealed state) and the state shown in FIG. 1 (initially sealed state) are compared, the force of the discharge cylinder 20 to hold the inner plug 8 is higher in the resealed state. Weaker than the initial sealed state. In the initial sealed state, the inner plug 8 needs to be strongly held by the discharge cylinder 20 because a large impact may be applied to the container or the container lid during transportation, but it is in the resealed state. Therefore, it is unlikely that a large impact as described above is applied to the container or the container lid, and the user can easily reopen the outer lid 6 rather than holding the inner plug 8 strongly by the discharge cylinder 20. It is preferable to set it to.

A modified example of the container lid of the present invention will be described with reference to FIG. Since the modified example shown in FIG. 8 is the same as the embodiment shown in FIG. 1 except for the form of the inner plug, only the differences from the embodiment shown in FIG. 1 will be described below, and the same parts will be described. Is added with a to the number to omit the description.

The inner plug 8a of the container lid 2a shown in FIG. 8 includes a ring-shaped base wall 66a and a cylindrical sealing wall 68a hanging from the inner peripheral edge of the base wall 66a, and the bottom surface of the sealing wall 68a is circular. It is blocked by the bottom wall 74a of the. Even if the inner plug has such a shape, it has the same effect as the container lid shown in FIG. In the container lid 2a shown in FIG. 8, similarly to the container lid 2 shown in FIG. 1, the engaging wall 42a hanging from the inner surface of the top wall 38a of the outer lid 6a is located radially outside the elastic piece 44a and is engaged. The engaging ridge 54a formed at the lower end of the wall 42a extends downward so as to be inclined inward in the radial direction, and the engaging ridge 54a engages with the outer peripheral edge of the base wall 66a of the inner plug 8a. It is possible, but if desired, a protrusion or a ridge (not shown) protruding inward in the radial direction is provided at the upper end of the inner peripheral surface of the base wall 66a (or the upper end of the inner peripheral surface of the sealing wall 68a). At the same time, the engaging wall 42a is arranged radially inward with respect to the elastic piece 44a so that the engaging ridge 54a extends downward so as to be inclined outward in the radial direction, whereby the engaging ridge 54a is described above. It can be made engaged with a protrusion or a protrusion. In this case, the elastic piece 44a is displaced slightly outward in the radial direction from the position shown in FIG.

Although the container lid of the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, the elastic piece is attached to the inner surface of the top wall of the outer lid and abuts on the outer surface of the base wall of the inner plug to elastically deflect the inner plug downward. Alternatively, an elastic piece may be attached to the upper surface of the base wall of the inner plug so as to abut on the inner surface of the top wall of the outer lid to elastically deflect the inner plug downward. Similarly, the limiting protrusion may be attached to the upper surface of the base wall of the inner plug instead of being attached to the inner surface of the top wall of the outer lid. Further, in the above-described embodiment, the lid body and the outer lid are formed by injection molding from a relatively soft synthetic resin such as polyethylene, and the inner plug is made from a relatively hard synthetic resin such as high-density polyethylene or polypropylene. It was formed by injection molding, but if desired, the lid body and outer lid are injection molded from a relatively hard synthetic resin such as polypropylene, and the inner plug is injection molded from a relatively soft synthetic resin such as polyethylene. You may. The lid body, the outer lid, and the inner plug may be molded of the same synthetic resin, but at least the lid body and the inner plug should be molded of a synthetic resin having different rigidity, so that the sealing wall of the inner plug is formed. And the discharge cylinder of the lid body are more firmly adhered to each other due to the bite caused by the elastic deformation of both. In the above-described embodiment, the inner plug is formed separately from the lid main body and the outer lid. However, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2019-11131, the inner plug, the lid main body, and the outer lid are used. The inner plug may be separated from the lid body and the outer lid after being integrally molded. In this case, it is preferable that the base wall of the inner plug is formed so as to be located above the upper end of the discharge cylinder. In this case, the inner plug is further molded from the same material as the lid body and the outer lid.

2: Container lid 4: Lid body 6: Outer lid 8: Inner plug 12: Top wall 14: Mounting wall 16: Discharge opening 20: Discharge cylinder 38: Top wall 40: Skirt wall 42: Engagement wall 44: Elastic piece 52 : Restriction protrusion 66: Base wall 68: Sealed wall 70: Mouth and neck of the container

Claims (8)

It is provided with a lid body attached to the mouth and neck of the container, an outer lid connected to the lid body so as to be swivelable between a closed position covering the lid body and an open position for exposing the lid body, and an inner plug. And
The lid body includes a top wall and a tubular mounting wall connected to the periphery of the top wall, and the top wall is formed with a discharge opening and a cylinder extending upward from the outer peripheral edge of the discharge opening. A shape discharge cylinder is formed, and the mounting wall is fitted to the mouth and neck of the container to be mounted on the mouth and neck of the container.
The outer lid includes a top wall, a skirt wall hanging from the periphery of the top wall, and a tubular engaging wall hanging from the inner surface of the top wall in the radial direction inward from the skirt wall.
The inner plug includes a base wall and a tubular sealing wall hanging from the base wall.
The discharge opening is sealed by inserting the sealing wall of the inner plug into the discharge cylinder attached to the top wall of the lid body, and the outer lid is opened from the closed position to the open position. Then, when the engaging wall of the outer lid engages with the inner plug, the inner plug is also opened and moved along with the opening of the outer lid, and the inner plug is moved to the discharge cylinder of the lid body. In the synthetic resin container lid that is separated from
An elastic piece that elastically deflects the inner plug downward with respect to the top wall of the outer lid is attached to the inner surface of the top wall of the outer lid or the upper surface of the base wall of the inner plug. ,
A synthetic resin container lid characterized by this. The base wall of the inner plug has a circular plate shape, and an engaging ridge having an inner diameter smaller than the outer diameter of the base wall of the inner plug is formed on the engaging wall of the outer lid. When the outer lid is closed to the closed position while the sealing wall of the inner plug is inserted into the discharge cylinder of the lid body, the engaging ridge of the engaging wall presses the base wall. When the outer lid is elastically overcome and located below the base wall and the outer lid is opened from the closed position to the open position, the engaging ridge of the engaging wall becomes the base wall of the inner plug. The synthetic resin container lid according to claim 1, which engages with. The base wall of the inner plug is circular and has an outer diameter larger than the outer diameter of the upper end of the discharge cylinder of the lid body, and the engaging wall of the outer lid is cylindrical and the engaging. The synthetic resin container lid according to claim 2, wherein the inner diameter of the ridge is larger than the outer diameter of the upper end of the discharge cylinder of the lid body and smaller than the outer diameter of the base wall of the inner plug. The elastic piece hangs from the inner surface of the top wall in the radial direction inside the engaging wall, abuts on the outer surface of the base wall of the inner plug, and elastically deflects the inner plug downward. The synthetic resin container lid according to any one of 1 to 3. The synthetic resin container lid according to claim 4, wherein at least the lower portion of the elastic piece extends downward in a radial direction so as to be inclined outward or inward in a free state. The elastic pieces extend continuously in the circumferential direction, and in a free state, a truncated cone or a truncated cone extending downward in a cylindrical shape extending parallel to the axial direction and extending downward in a radial direction outward or inward. The synthetic resin container lid according to claim 5, which has an inverted truncated cone-shaped lower portion. The method according to any one of claims 1 to 6, wherein the outer lid is formed with a limiting protrusion that protrudes from the inner surface of the top wall and limits the rise of the inner plug with respect to the top wall of the outer lid. Synthetic resin container lid. The synthetic resin container lid according to any one of claims 1 to 7, wherein the lid body and the outer lid are integrally molded, and the inner plug is molded separately from the lid body and the outer lid. ..

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