TWI767037B - Hinged lids and containers - Google Patents

Abstract

The hinged cover (11) is provided with a cover main body (21), a cover part (22) and a hinge part (23). The cover main body (21) is provided with a cylindrical part (32) and a sealing ring (33) and is installed in At the mouth portion (10a) of the upper end of the bottomed cylindrical container body (10), the sealing ring (33) is integrally formed with the cylindrical portion (32), and is spaced apart from the inner peripheral surface of the cylindrical portion (32). A curved chamfered portion (33d) is formed on the inner peripheral surface of the lower end portion extending downward from the cylindrical portion (32); the lid portion (22) has a top plate portion (41) and an annular protrusion (43), The part (41) covers the cover main body (21), the annular protrusion (43) is provided on the top plate part (41) and is in close contact with the inner peripheral surface of the sealing ring (33); the hinge part (23) is with the cover main body ( 21) and the cover part (22) are integrally formed and used to connect the cover body (21) and the cover part (22).

Description

Hinged lids and containers

The present invention relates to hinged lids and containers.

As a container for accommodating a highly viscous cosmetic, a resin container having a wide opening is used in order to take out the accommodated cosmetic with fingers. Such a container includes a bottomed cylindrical container body, and a hinged lid in which a wide-mouth opening attached to the mouth of the container body and a lid for closing the opening are hingedly connected. Such a hinged cover has a problem of poor sealing performance compared to a screw-on cover in which an opening formed with an external thread is closed with a cover with an internal thread.

Therefore, as disclosed in Japanese Patent Application Laid-Open No. 2007-204104, as a hinged cover with improved sealing performance, the lower surface of the top wall of the cover main body and the inner peripheral surface of the opening are formed of elastic materials such as elastomers. The technique of annular member covering is known.

However, the above-mentioned hinge-type cover has a problem that the cost increases because the annular member for improving the sealing performance is formed of a material different from that of the cover main body. In addition, when taking out the contents from the container, after digging out the contents from the opening with a finger, in order to make the contents adhering to the finger an appropriate amount, etc., the digged contents are brought into contact with the inner peripheral surface of the opening. part of the product, which reduces the content attached to the finger. However, if the ring-shaped member is formed of the same material as the lid material, since it is a relatively hard material, it will not feel good to the touch, and in addition, there is a possibility that the fingers are caught by the ring-shaped member and it is difficult to take out the contents from the container. question.

Then, the objective of this invention is to provide the hinge type lid and the container which can be manufactured at low cost, can improve the sealing property, and have excellent content extraction property.

According to one aspect of the present invention, the hinged lid includes a lid body, a lid portion, and a hinge portion, and the lid body has a cylindrical portion and a sealing ring, and is installed at an opening formed at an upper end of a bottomed cylindrical container body. The seal ring is integrally formed with the cylindrical portion, extends downward from the cylindrical portion with an interval from the inner peripheral surface of the cylindrical portion, and a curved chamfered portion is formed on the inner peripheral surface of the lower end portion. The cover portion has a top plate portion and an annular protrusion, the top plate portion covers the cover main body, the annular protrusion is arranged on the top plate portion and is in close contact with the inner peripheral surface of the sealing ring; the hinge portion is with the aforementioned The cover main body and the cover portion are integrally formed and used to connect the cover main body and the cover portion.

According to one aspect of the present invention, a container includes a bottomed cylindrical container body having a mouth at an upper end, and the hinged lid.

The present invention can provide a hinge-type lid and a container which can be manufactured at low cost, can improve sealing performance, and have excellent content extraction properties.

Hereinafter, the container 1 according to one embodiment of the present invention will be described with reference to FIGS. 1 to 4 . 1 is a cross-sectional view showing the structure of a container 1 according to an embodiment of the present invention, FIGS. 2 and 3 are a top view and a cross-sectional view showing the structure of a hinged lid 11 used in the container 1, and FIG. 4 is a hinged lid 11 is an enlarged cross-sectional view showing the structure of the sealing ring 33.

As shown in FIG. 1 , the container 1 includes a container body 10 and a hinged lid 11 . The container 1 accommodates liquid, gel, or cream-like articles with a predetermined viscosity, for example, cosmetics, pharmaceuticals, and the like with high viscosity. The container 1 is a so-called jar container. Here, as a specific example of an article having a predetermined viscosity, it is a moisturizing cream for applying to fingers, a face, and the like.

Such a container 1 is used in a posture in which the container body 10 is positioned below and the hinged lid 11 is positioned above. In the present embodiment, when describing the container 1 and the hinged lid 11 , as shown in FIG. 1 , the container body 10 side is below and the hinged lid 11 side is above.

The container body 10 is configured in a bottomed cylindrical shape. The container body 10 has a mouth portion 10a and a male screw portion 10b, the mouth portion 10a having a diameter so that a user's finger can be inserted, in other words, a wide mouth, and the male screw portion 10b is formed on the outer peripheral surface of the mouth portion 10a. The container body 10 including the mouth portion 10a and the male screw portion 10b is a resin molded product.

As shown in FIGS. 1 to 3 , the hinged lid 11 includes a lid body 21 attached to the mouth portion 10 a of the container body 10 , a lid portion 22 for opening and closing the lid body 21 , and a lid body 21 for connecting to the lid body 21 . and the hinge portion 23 of the cover portion 22 . The hinged lid 11 is attached to the container body 10 and constitutes an opening having a wide mouth having an inner diameter that is the same as or slightly smaller than the inner diameter of the container body 10 . The hinged lid 11 is a resin molded product obtained by integrally molding the lid main body 21 , the lid portion 22 , and the hinge portion 23 from the same resin material using a mold.

The lid body 21 is attached to the mouth portion 10a, and seals the space between the lid body 21 and the mouth portion 10a in order to prevent the contents from leaking to the outside from between the mouth portion 10a of the container body 10. The cover main body 21 has the opening part 21a, and the diameter is formed so that a user's finger can be inserted.

Specifically, the lid main body 21 includes an outer cylindrical portion 31 fixed to the mouth portion 10 a , an inner cylindrical portion 32 integrally connected to the inner peripheral portion of the upper end of the outer cylindrical portion 31 , and an upper end of the inner cylindrical portion 32 . The inner peripheral portion is formed as an integral seal ring 33 . In the cover main body 21, the inner cylindrical portion 32 constitutes the opening portion 21a. Specifically, the opening portion formed in the inner cylindrical portion 32 on the inner side in the radial direction of the inner peripheral surface of the seal ring 33 constitutes the opening portion 21a for taking out the contents.

The outer cylindrical portion 31 is formed into a cylindrical shape, and has an inner diameter that is the same as or slightly larger than the outer diameter of the mouth portion 10a. The inner peripheral surface of the outer cylindrical portion 31 has a female screw portion 31 a that is screwed with the male screw portion 10 b of the container body 10 . The outer cylindrical portion 31 , that is, the cap body 21 is fixed to the container body 10 by screwing the female screw portion 31 a and the male screw portion 10 b.

The inner cylindrical portion 32 is configured in a cylindrical shape. The inner cylindrical portion 32 is integrally formed with the outer cylindrical portion 31 on the inner peripheral surface of the upper end of the outer cylindrical portion 31 . The inner cylindrical portion 32 is configured to protrude upward from at least the inner peripheral surface of the upper end of the outer cylindrical portion 31 . The outer diameter of the inner cylindrical portion 32 is smaller than the outer diameter of the outer cylindrical portion 31 . In addition, the inner cylindrical portion 32 has an annular lower protruding portion 32a. The lower protruding portion 32a extends below the upper end of the outer cylindrical portion 31. When the outer cylindrical portion 31 is attached to the mouth portion 10a, it will be in contact with the upper end of the mouth portion 10a. adaptation. In addition, the inner cylindrical portion 32 has an outer peripheral surface on the opposite side to the hinge portion 23 across the center of the lid main body 21 , in other words, an outer peripheral surface that is symmetrical to the hinge portion 23 with the lid main body 21 as the center, and has a The engaging protrusion 32b with which the cover portion 22 engages.

The seal ring 33 is integrally formed with the inner peripheral surface of the upper end of the inner cylindrical portion 32 and the inner cylindrical portion 32 . The seal ring 33 is configured in a ring shape extending downward from the upper end of the inner cylindrical portion 32 so as to be separated from the inner peripheral surface of the inner cylindrical portion 32 . The inner peripheral surface of the seal ring 33 is in close contact with an annular projection 43 of the cover portion 22 which will be described later.

Specifically, as shown in FIG. 4 , the seal ring 33 includes a continuous portion 33a extending radially from the inner peripheral surface of the upper end of the inner cylindrical portion 32, and a sealing portion 33b extending downward from the continuous portion 33a. In addition, the inner peripheral surface of the upper end portion of the seal ring 33, in other words, the inner peripheral surface of the upper end of the sealing portion 33b, and in other words, the inner peripheral surface of the ridge portion constituting the continuous portion 33a and the sealing portion 33b, are formed relative to the sealing ring. The axis direction of 33 is constituted by a ring-shaped inclined surface which is inclined. That is, the seal ring 33 has the chamfered portion 33c formed of the annular inclined surface at the edge portions of the continuous portion 33a and the seal portion 33b.

Further, the inner peripheral surface of the lower end portion of the seal ring 33, in other words, the inner peripheral surface of the lower end of the sealing portion 33b, is configured in an annular curved surface shape. That is, the seal ring 33 has a curved chamfered portion 33d on the inner peripheral surface of the lower end portion. In other words, the longitudinal cross-sectional shape of the inner peripheral surface of the lower end portion of the seal ring 33 is formed in an arc shape.

As shown in FIG. 4 , the outer diameter of the seal ring 33 gradually decreases from the lower end to the middle portion, and gradually increases from the middle portion to the upper end. In other words, the shape of the outer peripheral surface of the seal ring 33 from the lower end portion to the midway portion is an annular inclined surface inclined upward and radially inward, and the shape of the outer peripheral surface from the midway portion to the upper end portion is It has an annular inclined surface inclined upward and radially outward.

That is, the gap generated between the inner peripheral surface of the inner cylindrical portion 32 and the outer peripheral surface of the seal ring 33 is the largest at the midway portion of the seal ring 33, and the upper end of the seal ring 33 is larger than the gap in the midway portion. and the gap at the lower end is relatively small.

The lid portion 22 includes a top plate portion 41 , an outer peripheral wall portion 42 suspended from the outer peripheral edge of the top plate portion 41 , and an annular protrusion 43 suspended from an inner surface of the top plate portion 41 facing the lid body 21 .

The top plate portion 41 is formed in a disk shape. The top plate portion 41 covers the upper surface of the lid body 21 including the opening portion 21a. The top plate portion 41 is an outer peripheral surface on the opposite side to the hinge portion 23 across the center of the lid main body 21, in other words, an outer peripheral surface that is symmetrical to the hinge portion 23 around the lid main body 21 as the center, and has an outer peripheral surface for the user. The finger hook portion 41a of the finger hook.

The inner diameter of the outer peripheral wall portion 42 is formed to be larger than the outer diameter of the inner cylindrical portion 32 on the outer peripheral surface on the opposite side to the hinge portion 23 across the center of the lid main body 21 , in other words, on the outer peripheral surface on the opposite side to the hinge portion 23 with the lid main body 21 as the center. The outer peripheral surface of the hinge part 23 becomes a symmetrical position, and has the to-be-engaged protrusion 42a which engages with the engaging protrusion 32b.

The annular projection 43 is arranged coaxially with the center of the top plate portion 41 , and is a cylindrical projection protruding from the inner surface of the top plate portion 41 . The outer diameter of the annular protrusion 43 is set to be slightly larger than the inner diameter of the seal ring 33 , and is thereby in close contact with the inner peripheral surface of the seal portion 33 b of the seal ring 33 . That is, in a state in which the engaged protrusion 42a of the outer peripheral wall portion 42 is engaged with the engaging protrusion 32b, that is, in a state in which the lid portion 22 is closed, the seal ring 33 and the annular protrusion 43 are configured to flex each other Deformed and closed shape.

The hinge portion 23 is integrally formed with the lid body 21 and the lid portion 22 . The hinge portion 23 connects the upper outer peripheral end of the outer cylindrical portion 31 of the lid body 21 and the lower outer peripheral end of the outer peripheral wall portion 42 of the lid portion 22 . The hinge portion 23 supports the lid portion 22 so as to be rotatable relative to the lid body 21 .

According to the container 1 having the hinged lid 11 thus constituted, the sealing ring 33 extending from the inner peripheral surface of the inner cylindrical portion 32 of the lid main body 21 at a distance can be connected to the annular shape of the lid portion 22. The sealing performance of the protrusion 43 is improved. Thereby, since the hinged cover 11 can be formed of the same material, the manufacturing cost can be reduced compared with the conventional sealing ring formed of a different material from other components of the hinged cover.

In addition, the hinged lid 11 has an arc-shaped vertical cross-sectional shape of the inner peripheral surface of the lower end of the sealing ring 33 that is brought into contact with the fingers when the contents are taken out, and the lower end of the sealing ring 33 is brought into contact with the user's finger. , the touch of the finger can be improved. For example, in the case of taking out the contents from the container body 10, etc., after the contents are dug out from the opening 21a with a finger, in order to make the contents adhering to the finger an appropriate amount, etc., the dug out contents may be sealed with a seal. A part of the lower end of the ring 33 is in contact, thereby adjusting the amount of the content attached to the finger. Furthermore, when the remaining amount of the contents decreases and the contents are taken out from the opening 21a by digging out the contents along the side wall surface of the container body 10, the fingers may come into contact with a part of the lower end of the seal ring 33. At this time, by providing the curved chamfered portion 33d at the lower end of the seal ring 33, a good touch can be achieved, and the annular curved surface can prevent fingers from being caught by the seal ring 33, thereby improving the ability to take out the contents. improve. As a result, the hinged cover 11 has excellent content take-out properties.

In addition, the outer diameter of the seal ring 33 gradually decreases from the lower end to the midway portion and gradually increases from the midway portion to the upper end, so the gap between the outer peripheral surface of the inner cylindrical portion 32 and the inner peripheral surface of the seal ring 33 is within the size of the seal ring 33 The lower end side becomes smaller. Therefore, the content can be suppressed from entering the gap, and as a result, the loss of the content at the time of use can be reduced.

In addition, when the hinged cover 11 is a molded product produced by a mold, since the outer diameter of the seal ring 33 becomes the smallest in the middle part, the seal ring 33 is formed in an undercut shape. Therefore, when the mold is to be released from the gap between the inner cylindrical portion 32 and the seal ring 33, the mold presses the seal ring 33 radially inward. At the time of mold release, since the seal ring 33 is pressed radially inward, the seal ring 33 is deformed in a direction in which the annular protrusion 43 of the lid portion 22 comes into closer contact. That is, when the mold is to be released, the seal ring 33 is deformed radially inward by its own concave shape, and the inner diameter of the seal ring 33 is corrected to a predetermined inner diameter by the mold, so that the seal ring 33 and the ring The protrusions 43 are in close contact with each other reliably.

As described above, according to the container 1 having the hinged lid 11 , it can be manufactured at low cost, the sealing performance can be improved, and the extractability of the contents can be excellent.

In addition, this invention is not limited to the said embodiment. For example, in the structure described in the above example, the hinged lid 11 is fixed to the container body 10 by screwing the outer thread portion 10b of the container body 10 and the inner thread portion 31a of the hinged lid 11, but the hinged lid 11 is not fixed to the container body 10. limited to this. For example, the container 1 may be configured such that the hinged lid 11 is fixed to the container body 10 by fitting.

That is, the present invention is not limited to the above-described embodiments, and various modifications can be made in the range of not departing from the gist in the implementation stage. In addition, the respective embodiments may be appropriately combined and implemented, and in this case, the combined effect can be obtained. In addition, the above-mentioned embodiment includes various inventions, and various inventions can be extracted by a combination selected from a plurality of components disclosed. For example, even if some constituent elements are omitted from all the constituent elements disclosed in the embodiments, if the problem can be solved and the effect can be obtained, the configuration in which the constituent elements have been omitted can be extracted as an invention.

1‧‧‧Container 10‧‧‧Container body 10a‧‧‧mouth 10b‧‧external thread 11‧‧‧hinged lid 21‧‧‧cover body 21a‧‧‧opening 22‧‧‧cover 23 ‧‧‧Hinge part 31‧‧‧Outer cylinder part 31a‧‧‧Female thread part 32‧‧‧Inner cylinder part 32a‧‧‧Lower protrusion part 32b‧‧‧Engaging protrusion 33‧‧‧Sealing ring 33a‧‧‧ Continuous part 33b‧‧‧Sealing part 33c‧‧‧Chamfering part 33d‧‧‧Chamfering part 41‧‧‧Top plate part 41a‧‧‧Finger hook part 42‧‧‧Outer peripheral wall part 42a‧‧‧ is engaged Protrusion 43‧‧‧Annular protrusion

FIG. 1 is a cross-sectional view showing the structure of a container according to an embodiment of the present invention. Figure 2 is a plan view showing the structure of the hinged lid used in the container. Figure 3 is a sectional view showing the structure of the hinged cover. Figure 4 is an enlarged cross-sectional view showing the structure of the sealing ring of the hinged cover.

1‧‧‧Container

10‧‧‧Container body

10a‧‧‧Oral

10b‧‧‧External thread

11‧‧‧Hinged cover

21‧‧‧Cover body

22‧‧‧Cover

23‧‧‧Hinge

31‧‧‧Outer cylinder

31a‧‧‧Internal thread

32‧‧‧Inner cylinder

32a‧‧‧Lower protrusion

32b‧‧‧Engaging protrusion

33‧‧‧Sealing ring

41‧‧‧Top plate

41a‧‧‧Finger hook

42‧‧‧Outer wall

42a‧‧‧Enclosed protrusions

43‧‧‧Annular protrusion

Claims (3)

A hinged lid is provided with a lid body, a lid portion and a hinge portion, the lid body system has a cylindrical portion and a sealing ring and is installed in a mouth portion formed at an upper end of a bottomed cylindrical container body, the sealing ring is It is integrally formed with the cylindrical portion, and extends downward from the cylindrical portion at a distance from the inner peripheral surface of the cylindrical portion, and a curved chamfered portion is formed on the inner peripheral surface of the lower end portion; the cover portion has a top plate part and an annular protrusion, the top plate part covers the cover main body, the annular protrusion is arranged on the top plate part and is in close contact with the inner peripheral surface of the sealing ring; the hinge part is connected to the cover main body and the cover part The seal ring is formed so that the outer diameter of the lower end is larger than the outer diameter of the midway portion, which is integrally formed to connect the lid body and the lid portion. The hinged cover according to claim 1, wherein the outer diameter of the sealing ring gradually decreases from the lower end to the middle portion, and gradually increases from the middle portion to the upper end. A container comprising: a bottomed cylindrical container body having a mouth at its upper end, and the hinged lid according to claim 1 or claim 2.

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