JP2009234606A - Container with lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container with a lid capable of surely attaining the reliability of the closing force of a lid member when the lid member is closed by reducing the pressure inside of the container. <P>SOLUTION: The container main body 2 of this container 1 with a lid is so formed that the radius decreases gradually in the radius inside direction from an opening side to a bottom side. A lid main body 8 is formed with a curl part 19 at the bottom end of a skirt wall 12 excluding a pull ring 15. The top face wall 11 of the main body 8 is provided with a liner contacting the top edge of the opening. A score 18 is formed with a skirt wall side score 18a which extends to the liner extending upward on the wall 12 from the base end side of a protrusion 14 and a score 18b on a top face wall side extending away to the opposite side of the pull ring 15 in the peripheral direction on the wall 11. When a lid member 3 is mounted on the main body 2, the inside of the container 1 is kept decompressed and the part 19 is pressed toward the inner peripheral side for keeping the main body 3 on the opening of the main body 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a container main body whose diameter gradually decreases radially inward from the opening side toward the bottom, and a container with a lid that closes the opening of the container main body.

Conventionally, as a means for opening a lid member without using an opening device such as a bottle opener for a container or the like, a gripping portion such as a pull ring that protrudes from an edge of a part of a skirt wall that is continuous with the top wall of the lid member There is known a container with a lid that forms a score which is a weakening line extending upward from the base of the grip portion toward the skirt wall and further to the top wall.
In the opening of the container body of such a container with a lid, a bead-like protrusion protruding outward in the radial direction of the container body is formed around the opening in order to lock the lid member when the container is closed. (See FIG. 6 of the conventional example of Patent Document 1 below). However, as described in the prior art of Patent Document 1, when drinking a beverage using the container body, the protruding portion hits the lips of the user or the like, so it is difficult to drink sensuously and is high in design. The feeling is lost.

  Patent Document 1 discloses a container main body without such a protruding portion, that is, a container main body without a protruding portion on the outer peripheral surface. In the container with a lid disclosed in Patent Document 1, an annular elastic member is provided on the inner peripheral surface of a metal lid member. The annular elastic member has a concave groove that fits into the upper edge (opening) of the container body. In the central part of the lid member, a through hole is formed which communicates the inside and outside of the lidded container. Further, a sealing piece made of a non-odorizing plastic film that closes the through hole is disposed on the outer surface side of the lid member.

In such a container with a lid, after the contents are put into the container main body, the inside of the container is evacuated to bring the lid member into close contact with the opening of the container main body. And the protective seal piece which covers the whole surface of a sealing piece and peels integrally with a sealing piece at the time of peeling is stuck on the outer surface of the sealing piece of a cover member so that peeling is possible.
When opening the lid member from the container body, the sealing piece is peeled off by peeling off the protective seal piece, thereby opening the through-hole to the atmosphere, so the degree of vacuum in the container is lost and the container body Is opened.
Utility Model Registration No. 3116673

However, since the through-hole is formed in the lid member in this way, the contents in the container come into contact with the sealing piece and the through-hole surface of the lid member, and in order to maintain the quality, the sealing piece It is desirable that a special material is required for the material, or that some processing for maintaining the quality of the through hole of the lid member is performed, and that there is no sealing piece.
On the other hand, since the inside of the container is depressurized, it is difficult to open the container lid by the decompression force unless the container lid is opened after the inside of the container is opened to the atmosphere like a sealing piece.
The present invention has been made in view of such circumstances, and by reducing the pressure inside the container, the reliability of the closing force of the lid member can be ensured when the container body is closed, and the contents The purpose of the present invention is to provide a container with a lid that can be easily removed without using a sealing piece when the container body is opened, without requiring any special technique for maintaining the quality of the container. And

In order to achieve the above object, the lidded container of the present invention closes at least the container body whose outer peripheral surface at the opening side gradually decreases in diameter radially inward from the opening side toward the bottom, and the container body. A lidded container comprising a lid member, the lid member comprising a metal lid body and a liner that is disposed on an inner surface of the lid body and contacts the upper edge of the opening, the lid body comprising: A top wall, a skirt wall extending downward from the periphery of the top wall, a gripping portion projecting from a part of the lower end of the skirt wall, and a curl curved outward at the lower end of the skirt wall excluding the gripping portion And a pair of scores extending from the both ends of the base end portion of the gripping portion to the upper surface position of the liner upward from the skirt wall and further along the top surface of the liner to the side away from the gripping portion around the top wall And forming a container book of the lid member The curl portion is pressed toward the container body when attached to the container body, so that the inner diameter of the lower end of the skirt wall is formed smaller than the maximum outer diameter portion of the outer peripheral surface of the opening, and the lid body is the opening of the container body And the inside of the container main body is held in a reduced pressure state.
The top wall of the lidded container includes the peripheral portion, an inverted truncated cone-shaped portion extending downwardly inward in the radial direction from the peripheral portion, and a circular central settling inside the inverted truncated cone-shaped portion. The liner is arranged on the inner peripheral surface of the peripheral edge.
The pair of scores is formed to extend to the end of the score around the top wall, and a straight line connecting the circumferential center of the grip portion and the center of the top wall of the lid member as viewed from above the lid member The angle α formed by the straight line connecting the end of the score and the center of the top wall of the lid member was made smaller than 90 degrees.

The lidded container of the present invention is a lidded container comprising at least a container body whose outer diameter on the opening side gradually decreases radially inward from the opening side toward the bottom, and a lid member that closes the container body. The lid member includes a metal lid body and a liner disposed on the inner surface of the lid body and abutting against the upper edge of the opening. The lid body includes a top wall, and the top wall. A skirt wall extending downward from the periphery, a gripping part protruding from a part of the lower end of the skirt wall, a curl part curved outward at the lower end of the skirt wall excluding the gripping part, and a base of the gripping part A pair of scores extending from both ends of the end portion up the skirt wall to the upper surface position of the liner and extending along the upper surface of the liner toward the side away from the gripping portion around the top surface wall; When the curl is attached to the container body The inner diameter of the lower end of the skirt wall is pressed to the container body side to be smaller than the maximum outer diameter part of the outer peripheral surface of the opening, the lid body is held in the opening of the container body, Since the inside is held in a reduced pressure state, direct pressure reduction in the lidded container and direct (in contact with the outer peripheral surface) or indirect (non-contact with the outer peripheral surface) plugging due to the reduced diameter of the curled part The double closure structure according to the above can enable a reliable closure state of the container body. Furthermore, by extending the score to the top wall, the holding force of the skirt wall holding the container opening can be further reduced by the curl portion over a range of about 360 degrees.
The top wall of the lidded container includes the peripheral portion, an inverted truncated cone-shaped portion extending downwardly inward in the radial direction from the peripheral portion, and a circular central settling inside the inverted truncated cone-shaped portion. Since the liner is disposed on the inner peripheral surface of the peripheral portion, when the lid member is put on the container body and the inside is decompressed, the central protrusion of the circular central settling portion is It dents to the bottom part side, the internal pressure reduction state can be confirmed, and the adhesion between the lid member and the container body can be confirmed. Since the inverted frustoconical shape that extends downward and adjacent to the periphery is formed, the inside of the periphery becomes a concave shape, the arrangement of the liner can be stabilized, and a sufficient amount can be secured. , Sealing performance can be improved.
The pair of scores is formed to extend to the end of the score around the top wall, and a straight line connecting the circumferential center of the grip portion and the center of the top wall of the lid member as viewed from above the lid member Since the angle α formed by the straight line connecting the end of the score and the center of the top wall of the lid member is made smaller than 90 degrees, the opening force is reduced by the score, and the lid is easily re-sealed after opening the lid. Is possible.

Hereinafter, a container with a lid according to an embodiment of the present invention will be described with reference to the drawings.
1 is a front view showing an example of a lidded container according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a cross-sectional view in the direction of FIG. 2X-X.
A container 1 with a lid according to the present invention includes a container body 2 and a metal lid member 3. The container body 2 is a glass container in this embodiment, but may be formed of a synthetic resin. The container body 2 is characterized in that at least the outer peripheral surface 6 on the opening 5 side of the container body 2 gradually decreases in diameter radially inward from the opening 5 side toward the bottom 7.

  As shown in FIG. 3, the gradual decrease in diameter includes those in which the diameter gradually decreases from the opening 5 to the bottom 7 of the outer peripheral surface of the container body 2, but at least the outer periphery on the opening 5 side. It is necessary that the portion of the surface 6 covered with the lid member 3 is gradually reduced. Therefore, the portion other than the opening 5 side may be uneven or may be linear, and the shape of the lower side of the container body may be a cylindrical shape, a spherical shape, a rectangular shape, or the like.

Next, the lid member 3 that closes the container body 2 in the opening 5 having no bead-shaped protrusion will be described.
4A to 4C show the lid member 3 before being attached to the container main body 2, and the lid member 3 includes a lid main body 8 and a liner 9. The lid body 8 is most preferably an aluminum-based alloy thin plate, but can also be formed by drawing a suitable metal thin plate such as a chromic acid-treated steel thin plate or a tin thin plate with a press or the like. The lid body 8 includes a disk-shaped top wall 11 and a cylindrical skirt wall 12 that substantially hangs down from the peripheral edge of the top wall 11. The inner diameter of the skirt wall 12 has substantially the same size as the outer diameter of the maximum outer diameter portion P (see FIG. 5) of the opening 5 of the container body 2.

With reference to FIGS. 3 and 5, the top wall 11 of the lid body 8 is, in order from the outside, an annular peripheral edge 21 extending inward, and downward from the annular peripheral edge 21 toward the radially inner side of the top wall 11. And an inverted frustoconical portion 22 extending in a slanted manner and a circular central settling portion 23 inside the inverted frustoconical portion 22.
The liner 9 described above is attached to the inner peripheral surface of the annular peripheral edge 21. The material of the liner 9 is a synthetic resin such as polyvinyl chloride or polyurethane. The liner 9 is disposed so as to fill the inner peripheral surface of the annular peripheral edge 21 (see A in FIG. 4). The liner 9 is bonded to the inner peripheral surface of the annular peripheral edge portion 21 by a metal paint applied on the inner peripheral surface. The central projecting portion 23b of the circular central sedimentation portion 23 projects in a shape that slightly expands upward from the peripheral flat portion 23a of the circular central sedimentation portion 23.
As shown in FIG. 5, the upper edge part of the container body forms a horizontal part 5a on the inner side, and the outer peripheral side forms a curved surface 5b that expands radially outward from the horizontal part 5a.

The lower end of the skirt wall 12 is connected to a part of the lower edge portion of the skirt wall 12, and a protrusion 14 is formed so as to protrude further downward from the end edge. The pull ring 15 is connected. The pull ring 15 extends downward from the protrusion 14 so as to be substantially along the outer peripheral surface 6 of the container body 2 (see FIG. 5).
A relatively small notch 16 is formed at the base of the protrusion 14 to the skirt wall 12. The notch 16 is the deepest part at the upper end of the protrusion 14, and a pair of scores 18 in which one end of the score 18 is located are formed in the deepest part of the notch 16. The score 18 includes a skirt wall-side score 18a that traverses the skirt wall 12 in the height direction from the deepest portion and extends to the corner portions of the top surface wall 11 and the skirt wall 12, and a corner portion that extends in an arc shape on the opposite side of the grip portion from the corner portion. A score 18c and a top wall side score 18b extending in the circumferential direction of the top wall 11 are further provided. The score 18 generally consists of a thin part.

Referring to FIG. 6 or FIG. 7, one skirt wall side score 18a extends in the vertical direction on the skirt wall 12, and the other top wall side score 18b extends on the opposite side to the position of the pull ring 15, 11 is formed along the peripheral edge portion. The place where the top wall side score 18 b is formed is the annular peripheral edge 21 located immediately above the upper end of the container body 2, and is the position where the liner 9 is mounted on the inner surface of the annular peripheral part 21. Therefore, the score 18 b is formed in the circumferential direction along the upper surface of the liner 9.
The pair of top wall side scores 18b formed in the circumferential direction is formed to extend to the score end portion E around the top wall 11, and is the center in the circumferential direction of the pull ring 15 that is the grip portion as viewed from above the lid member 3. An angle α formed by a straight line TO connecting T and the center O of the top wall 11 of the lid member 3 and a straight line EO connecting the score end portion E and the center O of the top wall 11 of the lid member 3 is made smaller than 90 degrees. As a result, the opening force can be reduced by breaking the score, and a simple reseal can be performed after the lid is opened. The angle α is preferably smaller than 50 degrees in terms of improving resealability after the lid is opened.
As shown in the top wall side score 18b in FIG. 8, the thin-walled portion where the score 18 is formed is made thinner so that it is weaker than the other portions, and the pull ring 15 is pulled to thereby close the lid. The main body 8 is formed so as to be torn.
A curled portion 19 is formed at the lower end of the skirt wall 12. The curled portion 19 is formed radially outward from the lower end of the top wall 11 and further rewound toward the proximal end side of the curled portion 19 to have a substantially circular cross section. The curled portion 19 is formed in the circumferential direction of the skirt wall 12 except for a portion where the pull ring 15 is formed.

In the lidded container 1 having such a configuration, the container body 2 is closed as follows.
First, contents such as liquor are placed in the container body 2. The temperature of the contents is 50 to 60 ° C., and the filling amount of the contents needs to leave a space where pressure can be reduced without entering the opening 5. Next, the lid member 3 is attached to the opening 5 of the container body 2. At this time, the liner 9 disposed on the inner peripheral surface of the annular peripheral edge portion 21 of the lid member 3 is placed on the horizontal portion 5 a in the opening 5 of the container body 2. At this time, the top surface wall 11 of the lid member 3 is pressed by a closing jig (not shown) and the curled portion 19 is pressed radially inward of the lid body 8. Since the liner 9 has elasticity, it is in close contact with the horizontal portion 5a and the curved surface 5b, which are the upper edge portions of the container body 2 shown in FIG. 5, and further, from the horizontal portion 5a to the inner peripheral surface side of the opening 5.
The curled portion 19 of the lid member 3 is reduced in diameter by a pressing jig, and the lower end of the skirt wall 12 of the lid member 3 is smaller than the diameter of the maximum outer diameter portion P of the outer peripheral surface of the opening 5 of the container body 2. The curled portion 19 as a portion is formed so as to have a small inner diameter. For drawing, the caulking portion 19 that is the drawing portion may be slightly caulked so that the inner peripheral surface of the curled portion 19 contacts the outer peripheral surface of the container body 2 without pressing. However, the curled portion 19 may press the outer peripheral surface, or a gap may be formed.

  On the other hand, since the temperature of the contents is 50 to 60 ° C., the inside of the lidded container 1 is decompressed by natural cooling higher than normal temperature. By this decompression, the lid member 3 is sucked into the container body 2 and the portions where the liner 9 is in contact with the container body 2 such as the horizontal portion 5a and the curved surface 5b of the container body 2 are brought into close contact with each other. 1 can be hermetically sealed. Due to the decompression of the internal space, the top wall 11 of the lid member 3 is sucked, and the central projecting portion 23b formed in the circular central sedimentation portion 23 is recessed toward the bottom 7 side of the container body 2 (in FIG. 5). (See the two-dot chain line). When the central projecting portion 23b is depressed, internal pressure reduction can be confirmed, and furthermore, the adhesion between the lid member 3 and the container body 2 can be confirmed.

In this way, the lid member 3 can be attached to the container body 2. Therefore, even if the bead is not formed in the opening 5 of the container main body 2, the lid member 3 can be closed on the container main body 2 with conventional existing equipment.
As described above, the inside of the lidded container 1 is decompressed and the liner 9 maintains hermeticity, but in this embodiment, the maximum outer diameter portion of the outer peripheral surface of the opening 5 of the container body 2 is further increased. It is formed so that the inner diameter of the lower end side of the skirt wall 12 of the lid member 3 is smaller than the diameter of P. Therefore, even if a force of a level due to normal handling is applied, the maximum outer diameter portion P cannot be overcome and the lid member 3 is not detached from the container body 2.

Regarding the plugging property of the lid member 3 to the container main body 1, since it has a double structure closed by a reduced pressure and a light restriction at the lower end of the skirt wall 12, a reliable closing state is possible. Since the entire periphery of the skirt wall 12 integrally covers the entire outer periphery of the opening 5, even if an external force is applied, the skirt wall 12 does not open outward if the external force is within a normal range. The lid member 3 is not detached from the opening 5.
About such a container 1 with a lid | cover, you may make it cover a shrink film over the upper part of the cover member 3 and the container main body 2, or the whole in order to improve tamper evidence property.

  With such a configuration, when the user opens the lid member 3 from the container body 2, the pull ring 15 is inserted into a finger, and the pull ring 15 is pulled upward from the skirt wall 12 to be cut. At this time, the pull ring 15 is first pulled outward in the radial direction of the lid member 3, the score 18 a of the skirt wall 12 is torn, and then the pull ring 15 is pulled upward to form the annular peripheral edge 21 on the top wall 11 side. The corner score 18c is further torn. As a result, the liner 9 portion bonded to the back surface of the protrusion 14 of the pull ring 15 is turned upward, and the sealing property of the liner 9 at this portion is lost, and the air enters the container body 2.

  When the air enters the container body 2, the suction force to the top wall 11 of the lid member 3 due to the reduced pressure is lost. In this state, the corner portion score 18c is merely torn upward, and a curled portion 19 is formed at the lower end of the lid member 3. The curled portion 19 is the maximum of the opening 5 of the container body 2. In this state, the strength of the curled portion 19 is large and a considerable force is required to remove the lid member 3. Therefore, by pulling the pull ring 15 further toward the center side of the lid member 3, the top wall side score 18b is torn. The cut portion of the top wall side score 18b of the skirt wall 12 thus torn can spread the curled portion 19 outward in the circumferential direction. Accordingly, the holding force by the curled portion 19 is reduced and the maximum outer diameter portion P of the opening 5 can be easily climbed, and the lid member 3 is released from the opening 5 of the container body 2 so that the container body 2 can be easily removed. Can be opened.

  The length from the side of the pull ring 15 on the top wall 11 to the end E of the top wall side score 18b, that is, the straight line TO connecting the circumferential center T of the pull ring 15 and the center O of the top wall 11 of the lid member 3 The angle α formed by the straight line EO connecting the score end portion E and the center O of the top wall 11 of the lid member 3 can be determined by the balance between the openability and the resealability after opening. The shape of the container opening 5 according to the present invention is not the shape of the container opening 5 that forms a bead-shaped protrusion protruding outward in the radial direction. Since the diameter gradually decreases inward in the radial direction toward 7, the balance can be easily selected.

  Thus, in the present embodiment, the lid member 3 can be held in the opening 5 even if the container main body 2 has no bead-like protrusions in the opening 5 of the container main body 2. Therefore, it is possible to drink a beverage by applying the user's lips to the smooth opening portion 5 having no protrusions, and the user is sensually easy to drink and has a good mouthfeel. Since the quality of the contents is not changed from that of a normal lid member, the existing technology for maintaining the quality of the lid member can be applied as it is.

  In the conventional container main body, since the caulking is formed so as to be wound around the bead-shaped protrusion formed in the opening, it is necessary to increase the material of the container main body. Since the squeezed portion is not in contact with the outer peripheral surface of the container main body 2 or no pressure is applied even if the squeezed portion is contacted, no load is applied to the container main body 2 even if the squeezed portion is formed. Therefore, when the container main body 2 is made of glass as in this embodiment, there is an effect that the thickness of the container main body 2 can be reduced. The same applies to the container body made of synthetic resin. When the container body is thin, it can be made into a shape with excellent design like a commercially available cup used at home, so it can be reused as it is and the labor of recycling is omitted. You can also.

The present invention has been described in detail based on the embodiments with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and other modifications can be made without departing from the scope of the present invention. Or it can be modified.
For example, in the above embodiment, the circular central sedimentation portion 23 is formed in the central portion of the top wall 3 of the lid member 3, but the circular central sedimentation portion 23 is omitted and the peripheral flat portion 23 a of the inverted frustoconical shape portion 22. And may be flush with each other.

It is a front view after closing the lid member of the container with a lid in an embodiment of the invention. FIG. 2 is a side view after the lid member of the lidded container of FIG. 1 is closed (after caulking of the lid member). It is sectional drawing in the XX direction of the container with a lid | cover of FIG. 2 (before caulking of a cover member). FIG. 1 is a lid member of the lidded container of FIG. 1, wherein A is a partially broken sectional view of the lid member as viewed from the front, B is a front view of the lid member, and C is a side view (caulking of the lid members of A to C). Before). It is an expanded sectional view in the opening part of the container with a lid | cover of FIG. 3 (before caulking of a cover member). It is a perspective view which shows the pull ring part and score of the container with a lid | cover of FIG. It is a top view of the lid member of the container with a lid of FIG. It is an expanded sectional view which shows the engagement state of the container and lid member after caulking of the container with a lid | cover of FIG. It is a side view before caulking of the lid member of the lidded container of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container with lid 2 Container body 3 Lid member 5 Opening part 6 Outer peripheral surface 7 Bottom part 8 Lid main body 9 Liner 11 Top surface wall 12 Skirt wall 15 Pull ring 18 Score 18a Skirt wall side score 18b Top surface wall side score 19 Curl part 21 Annular peripheral part E Termination

Claims (3)

A container with a lid having at least an outer peripheral surface on the opening side, the container body having a diameter that gradually decreases radially inward from the opening side toward the bottom, and a lid member that closes the container body, A metal lid main body and a liner disposed on the inner surface of the lid main body and in contact with the upper edge of the opening;
The lid body includes a top wall, a skirt wall extending downward from the periphery of the top wall, a gripping part protruding from a part of the lower end of the skirt wall, and a lower end of the skirt wall excluding the gripping part, A curl portion that curves outward, and extends from the both ends of the base end portion of the gripping portion up the skirt wall to the top surface position of the liner, and further along the top surface of the liner toward the side away from the gripping portion around the top wall And a pair of scores extending
When the lid member is attached to the container body, the curl portion is pressed toward the container body side so that the inner diameter of the lower end of the skirt wall is smaller than the maximum outer diameter portion of the outer peripheral surface of the opening, and the lid body Is held in the opening of the container body, and the inside of the container body is held in a reduced pressure state.   The top wall comprises the peripheral edge, an inverted frustoconical shape extending downwardly inward in the radial direction from the peripheral edge, and a circular central settling portion inside the inverse frustoconical shape, 2. The lidded container according to claim 1, wherein the liner is disposed on the inner peripheral surface of the peripheral portion.   The pair of scores is formed to extend to the end of the score around the top wall, and a straight line connecting the circumferential center of the grip portion and the center of the top wall of the lid member as viewed from above the lid member The lidded container according to claim 1 or 2, wherein an angle α formed by a straight line connecting the end portion of the score and the center of the top wall of the lid member is smaller than 90 degrees.

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