JP2006182371A - Hinge cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge cap enhancing the forming properties by effectively suppressing breakage and deformation of a die tool for forming a notch during the forming operation. <P>SOLUTION: In the hinge cap, at least a part in the circumferential direction of an outer circumferential cylinder 11 forms a double wall structure with an outer side wall part 11a and an inner side wall part 11b by an arc-shaped notch 18 extending downward from an upper end, an axially breakable groove 19 is provided on the outer side wall part, and an axially breakable groove 20 is also formed in the inner side wall part continuous to this axially breakable groove. An outer circumferential surface of the outer circumferential cylinder in the cap body 10 is offset to a hinge connection part side of the cap lid body 30 with respect to the inner circumferential surface, and the arc-shaped notch is formed on the hinge connection part side of the cap lid body on the outer circumferential cylinder. A breakable groove in the circumferential direction is formed in a boundary part between the outer circumferential cylinder of the cap body and a horizontal flange 12 about over one half circumference on both sides of the double wall structure part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hinge cap attached to a mouth of a bottle-shaped container that contains liquid food such as miso.

  A hinge cap made of a synthetic resin molded body is widely used as a cap attached to the mouth of a bottle-shaped container that contains liquid food such as miso. The hinge cap is configured by connecting a cap lid body so as to be freely openable and closable via a hinge with respect to a cap body fitted and fixed to the container mouth.

  Such a hinge cap, especially because the cap body is firmly fitted and fixed to the container mouth portion, it cannot be easily removed from the container mouth portion when it is separated and discarded as waste after use. And the hinge cap cannot be separated and discarded.

  As a hinge cap for solving the above-mentioned problems, the outer peripheral cylinder fitted and fixed to the container mouth portion of the cap main body has an outer wall portion by an arc-shaped cut extending downward from its upper end over a half circumference. The thing which became the double wall structure of a wall and an inner wall part is known (for example, refer patent document 1).

The hinge cap has a double wall structure of an outer wall portion and an inner wall portion formed by an arc-shaped cut extending downward from the upper end of the outer peripheral cylinder of the cap body, and the hinge connection of the cap lid body on the outer wall portion of the outer peripheral cylinder. An axially breakable groove is provided in the vicinity of both ends in the circumferential direction of the portion, and an axially breakable groove is provided on the inner wall portion continuously from the axially breakable groove to break the axially breakable groove. As a result, the engagement force between the cap body and the container mouth portion is reduced, so that the cap body can be easily removed from the container mouth portion without using a special tool.
JP 2002-308313 A

  However, in the hinge cap in which the outer peripheral cylinder of the cap main body has a double wall structure by an arc-shaped cut extending downward from the upper end, the outer peripheral cylinder of the cap main body is provided with a double wall structure of an outer wall portion and an inner wall portion. In order to form an arc-shaped cut, a mold tool having a shape corresponding to the arc-shaped cut is used for molding. The mold tool for forming the cut corresponds to the arc-shaped cut. Since it has a shape, its thickness is very thin and its strength is low. For this reason, the die tool for incision molding tends to be damaged or deformed by the resin pressure at the time of molding or removal of the molded product from the mold, and the molding tool is likely to be defective due to the damage or deformation of the mold tool. It has a problem. In addition, the quality of the molded product tends to vary at a portion where the thickness of the mold tool is very thin.

  The present invention relates to a hinge cap provided with a cap body in which at least a part of the outer peripheral cylinder in the circumferential direction has a double wall structure of an outer wall portion and an inner wall portion by an arc-shaped cut. An object of the present invention is to provide a hinge cap in which the mold tool is effectively prevented from being broken and deformed, and the mold tool is eliminated to reduce the variation in quality of the molded product by eliminating the thin part.

  In order to achieve the above object, according to the present invention, a cap main body fitted and fixed to the container mouth portion is coupled to the cap main body via a hinge and can be opened and closed with respect to the cap main body using the hinge as a fulcrum. The cap body is provided in a through state via a horizontal flange at the upper end of the inner peripheral surface of the outer peripheral tube and the inner peripheral surface of the outer peripheral tube. And a pour tube that is fitted into the provided container mouth, and at least a part of the outer peripheral tube in the circumferential direction is formed by an arc-shaped cut extending downward from the upper end between the outer wall portion and the inner wall portion. In the hinge cap having a heavy wall structure, wherein the outer wall portion is provided with an axially breakable groove, and the inner wall portion is provided with an axially breakable groove continuously to the axially breakable groove. Of the outer cylinder The peripheral surface is decentered toward the hinge connecting portion side of the cap lid body with respect to the inner peripheral surface, and the arc-shaped cut is provided on the hinge connecting portion side of the cap lid body in the outer peripheral cylinder. ).

  In the hinge cap, the center of the outer peripheral surface of the outer peripheral cylinder in the cap body is decentered toward the hinge connecting portion side of the cap cover body with respect to the center of the inner peripheral surface. Since the thickness dimension in the radial direction on the connecting portion side can be increased, the radial width of the circular arc cut provided in the outer peripheral cylinder can be set large.

  Further, in the present invention, the cap main body fitted and fixed to the container mouth portion is connected to the cap main body via a hinge, and the cap main body is pivotable to be openable and closable with respect to the cap main body. The cap body comprises an outer peripheral cylinder fitted over the container mouth portion, and a container mouth provided in a penetrating manner through a horizontal flange at the upper end portion of the inner peripheral surface of the outer peripheral tube. A pour cylinder that is internally fitted in the portion, and at least a portion of the outer peripheral cylinder in the circumferential direction has a double wall structure of an outer wall portion and an inner wall portion by an arc-shaped cut extending downward from the upper end. A hinge cap provided with an axially ruptureable groove in the outer wall portion and an axially ruptureable groove in the inner wall portion continuous with the axially ruptureable groove; Boundary with flange The circumferential breakable grooves are provided for approximately half laps on both sides of the double wall structure portion (claim 2).

  In the hinge cap, the range in which the engagement between the cap body and the container mouth portion is released can be increased by breaking the circumferentially breakable groove provided in the cap body.

  Further, in the hinge cap, the circular cut is set at a circumferential angle of 62 ° so that both ends in the circumferential direction are located in the vicinity of both ends in the circumferential direction of the hinge connecting portion of the cap lid. You may make it do. In this case, since the axially breakable groove provided on the outer peripheral cylinder of the cap body and the circumferential ends of the hinge connecting portion of the cap lid are close to each other, a large force is required by pulling the cap lid. The axially breakable groove provided in the outer peripheral cylinder of the cap body can be easily broken.

  In the hinge cap of the present invention, since the radial width of the arcuate cut provided in the outer peripheral cylinder of the cap body can be set large, the thickness dimension in the radial direction of the mold tool having a shape corresponding to the arcuate cut can be increased. Strength can be increased, effectively preventing damage and deformation of the mold tool at the time of molding, and eliminating the thin part of the mold tool to reduce variation in the quality of the molded product, thereby improving moldability. Can be improved. In addition, since the range in which the engagement between the cap body and the container mouth portion is released can be increased, it can be easily removed from the container mouth portion.

  Hereinafter, the hinge cap of this invention is demonstrated based on embodiment shown to drawing. 1 is a plan view of a hinge cap according to an embodiment of the present invention in a state where an upper lid is opened, FIG. 2 is a sectional view taken along line XX of FIG. 1, and FIG. 3 is a bottom view of FIG. 4 is a YY cross-sectional view of FIG.

  As shown in FIGS. 1 to 4, the hinge cap A is formed by injection molding a synthetic resin such as polypropylene or polyethylene, for example, and a cap body 10 fitted and fixed to a container mouth portion. A cap lid 30 that is detachably mounted, and the cap lid 30 is integrally connected to the cap body 10 via a hinge 40 and can be opened and closed with respect to the cap body 10 with the hinge 40 as a fulcrum. It is configured to be freely rotatable.

  The cap body 10 has a cylindrical outer peripheral cylinder 11 that is externally fitted to the container mouth, and a bottomed bottom that is internally fitted to the container mouth via a horizontal flange 12 at the upper end of the outer peripheral cylinder 11. A cylindrical pouring tube 13 is provided in a penetrating state, and an annular gap formed between the outer tube 11 and the pouring tube 13 is fitted into the container mouth, and provided on the inner peripheral surface of the lower end portion of the outer tube 11. The annular projection 14 is fixed to the container mouth. A locking ring 15 that locks the cap lid 30 when the cap lid 30 is closed is provided on the horizontal flange 12 so as to surround the dispensing cylinder 13. The height is lower than that of the dispensing cylinder 13 and is formed concentrically with the dispensing cylinder 13.

  The pour tube 13 is provided with a breakable groove 16 for forming a spout on the back surface of the bottom plate 13a that closes the bottom surface of the pour pipe 13 along the outline of the spout formed. A pull ring 17 for breaking is integrally provided on the surface of the bottom plate 13a located at the position. In the pouring cylinder 13, the pullable ring 17 is hooked with a fingertip and pulled upward, whereby the breakable groove 16 is broken to form a pouring outlet for pouring the contents into the bottom plate 13 a. A portion of the cap body 10 of the dispensing tube 13 on the side opposite to the hinge connecting portion side of the cap lid body 30 (about a half circumference portion in the embodiment shown in the drawings) is formed in a funnel shape with its upper end portion being expanded outward. In addition, the contents can be smoothly poured out, and the liquid drainage after pouring can be improved. On the other hand, a part of the cap main body 10 of the pouring cylinder 13 on the side of the hinge connecting portion of the cap lid body 30 (about a half circumference portion in the embodiment shown in the drawings) has a lower notch at the upper end, and interference with the cap lid body 30. Can be prevented.

  The cap lid body 30 has a covered cylindrical shape that can be attached to the cap main body 10, and is connected to the upper end of the outer peripheral surface of the outer peripheral cylinder 11 in the cap main body 10 via a hinge 40, and is connected to the cap main body 10 with the hinge 40 as a fulcrum. And can be opened and closed. In this cap lid body 30, an annular convex portion 31 that is locked to the locking ring 15 of the cap body 10 when the cap body 10 is closed is provided on the inner peripheral surface near the opening end, and the top surface is A sealing ring 32 is provided on the back surface of the top plate 30a to be closed when the cap main body 10 is closed. The sealing ring 32 is hermetically fitted to the extraction tube 13 of the cap main body 10 and is opposite to the hinge connecting portion with the cap main body 10. A finger hook portion 33 for hooking a finger when opening the lid is provided at the opening end of the outer peripheral surface located at the position.

  The hinge 40 includes a connecting piece 41 having a constant width with a thin central portion connecting the upper end of the outer peripheral surface of the outer peripheral cylinder 11 of the cap body 10 and the outer peripheral surface opening end of the cap lid 30. Positioned on both sides of the connecting piece 41, a mountain-shaped elastic pressing piece 42 is provided so as to connect between the vicinity of the upper end of the outer peripheral surface of the outer peripheral cylinder 11 and the vicinity of the opening end of the outer peripheral surface of the cap lid 30. Yes. In the hinge 40, when the cap lid body 30 is pivotally closed from the open position, the elastic pressing piece 42 is elastically extended, and when the cap lid body 30 is pivotally opened, the elastic lid piece 30 is elastic. The cap lid 30 can be forcibly positioned at the open position by the elastic tensile force of the pressing piece 42.

  In the hinge cap A, the center O ′ of the outer peripheral surface of the outer peripheral cylinder 11 in the cap body 10 is eccentric to the hinge connecting portion side of the cap lid 30 with respect to the center O of the inner peripheral surface. The thickness dimension in the direction gradually increases from the side opposite to the hinge connecting portion of the cap lid 30 toward the hinge connecting portion of the cap lid 30. Then, an arc-shaped cut 18 extending downward from the upper end between the outer peripheral surface and the inner peripheral surface of a part of the cap lid body 30 on the side of the hinge connecting portion of the cap body 30 having a large thickness dimension in the radial direction of the outer peripheral cylinder 11 in the cap body 10. This arc-shaped cut 18 forms a part of the cap body 10 on the side of the hinge connecting part of the cap lid 30 of the outer peripheral cylinder 11 in the cap body 10 with a double wall structure of the outer wall part 11a and the inner wall part 11b. In the double wall structure portion of the outer peripheral cylinder 11, the outer wall 11a and the inner wall 11b are integrally connected at the lower end. Both ends in the circumferential direction of the arc-shaped cut 18 are positioned in the vicinity of both ends in the circumferential direction of the hinge 40. That is, the circumferential angle θ of the arcuate cut 18 is set to, for example, 62 ° so that both ends in the circumferential direction are located in the vicinity of both ends in the circumferential direction of the hinge 40, respectively. An axially breakable groove 19 extending downward from the upper end is provided at both ends in the circumferential direction of the outer wall 11a of the outer cylinder 11 in the cap body 10, and the inner wall 11b of the outer cylinder 11 An axially breakable groove 20 extending downward from the upper end is provided at a position facing the axially breakable groove 19 provided in the outer wall portion 11a, and is provided in the outer wall portion 11a of the outer peripheral cylinder 11. The axially breakable groove 19 and the axially breakable groove 20 provided in the inner wall portion 11b are connected to each other at the lower end. Further, at the boundary portion between the outer peripheral cylinder 11 and the horizontal flange 12 of the cap body 10, there are two circumferential breakable grooves 21 opened in an annular gap formed between the outer peripheral cylinder 11 and the extraction cylinder 13. It is provided on both sides of the heavy wall structure portion over about a half circumference.

  Next, in the hinge cap A having the above-described configuration, a procedure for removing from the container mouth portion when separating and discarding after use will be described. First, when the cap lid body 30 is opened and the cap lid body 30 is held and pulled downward, the outer wall 11a of the outer peripheral cylinder 11 of the cap body 10 hinged to the cap lid body 30 is used. An axially breakable groove provided on the outer circumferential portion 11, that is, an axially breakable groove 19 located at both circumferential ends of the arc-shaped cut 18 is broken, and the outer wall 11 a of the outer peripheral cylinder 11 is broken in the axially breakable groove 19. Torn from the upper end to near the lower end. Next, when the outer wall 11a of the outer peripheral cylinder 11 that is torn by pulling the cap lid 30 upward is rolled up, an axially breakable groove provided on the inner wall 11b of the outer peripheral cylinder 11, that is, an arc shape The axially breakable grooves 20 located at both ends of the notch 18 in the circumferential direction are broken, and the inner wall 11b of the outer peripheral cylinder 11 is torn along the axially breakable groove 20 from the vicinity of the lower end to the upper end. Further, when the inner wall 11b of the outer peripheral cylinder 11 that has been torn up by pulling the cap lid 30 upward is rolled up, the circumference provided on the outer peripheral cylinder 11 over about a half circumference on both sides of the double wall structure portion. The direction breakable groove 21 is broken, and the boundary portion between the outer peripheral cylinder 11 and the horizontal flange 12 is torn along the circumferential direction breakable groove 21. Thereby, it will be in the state by which the engagement force with respect to the container opening part of the outer periphery cylinder 11 of the cap main body 10 was cancelled | released, and the hinge cap A can be easily removed from a container opening part.

  In the hinge cap A, the center of the outer peripheral surface of the outer peripheral cylinder 11 in the cap body 10 is decentered toward the hinge connecting portion side of the cap cover 30 with respect to the center of the inner peripheral surface. Since the thickness dimension in the radial direction on the hinge connecting portion side can be increased, the radial width of the arc-shaped cut 18 provided in the outer peripheral cylinder 11 can be set large. As a result, since the thickness dimension in the radial direction of the mold tool having a shape corresponding to the arc-shaped cut 18 can be increased, the strength of the mold tool for forming the arc-shaped cut 18 can be increased, and the mold during molding can be increased. It is possible to effectively prevent breakage and deformation of the tool.

  Further, in the hinge cap A, a circumferentially breakable groove 21 is formed at a boundary portion between the outer peripheral cylinder 11 and the horizontal flange 12 of the cap body 10 over both sides of the double wall structure portion of the outer peripheral cylinder 11 over about a half circumference. By providing, the range by which engagement with the cap main body 10 and a container opening part is cancelled | released can be enlarged, and it can remove easily from a container opening part.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made within the scope of the technical idea. For example, the cap body 10 is preferably provided with at least one drain hole (not shown) communicating with the arc-shaped cut. Therefore, even when water is washed or shower cooled if necessary after installation at the container mouth, and water accumulates in the arc-shaped cut, it enters the arc-shaped cut by providing a drain hole. Water can be easily removed. Moreover, the thin part of the mold tool can be eliminated, and variations in the quality of the molded product can be reduced.

In embodiment of the hinge cap of this invention, it is a top view of the state which opened the upper cover. It is XX sectional drawing of FIG. It is a bottom view of FIG. FIG. 2 is a YY sectional view of FIG. 1.

Explanation of symbols

  A ... hinge cap, 10 ... cap body, 11 ... outer peripheral cylinder, 11a ... outer peripheral wall, 11b ... inner peripheral wall, 12 ... horizontal flange, 13 ... dispensing cylinder, 18 ... arc-shaped cut, 19 ... axially breakable Groove, 20 ... axially breakable groove, 21 ... circumferentially breakable groove, 30 ... cap lid, 40 ... hinge, O ... center of inner peripheral surface of outer peripheral cylinder in cap body, O '... outer periphery in cap body Center of the outer peripheral surface of the cylinder

Claims (4)

A cap main body fitted and fixed to the container mouth portion, and a cap lid connected to the cap main body via a hinge and rotatably provided to the cap main body so as to be openable and closable with the hinge as a fulcrum. The cap body is internally fitted to an outer peripheral tube that is externally fitted to the container mouth portion, and a container mouth portion that is provided in a penetrating state at the upper end portion of the inner peripheral surface of the outer peripheral tube via a horizontal flange. An outer cylinder and a double wall structure of an outer wall and an inner wall by an arc-shaped cut extending downward from the upper end of the outer cylinder. In the hinge cap provided with an axially breakable groove, and provided with an axially breakable groove in the inner wall portion in a continuous manner with the axially breakable groove,
The outer peripheral surface of the outer peripheral tube in the cap body is decentered toward the hinge connecting portion side of the cap lid body with respect to the inner peripheral surface, and the arc-shaped cut is formed on the hinge connecting portion side of the cap cover body in the outer peripheral tube. A hinge cap characterized by being provided. A cap main body fitted and fixed to the container mouth portion, and a cap lid connected to the cap main body via a hinge and rotatably provided to the cap main body so as to be openable and closable with the hinge as a fulcrum. The cap body is internally fitted to an outer peripheral tube that is externally fitted to the container mouth portion, and a container mouth portion that is provided in a penetrating state at the upper end portion of the inner peripheral surface of the outer peripheral tube via a horizontal flange. An outer cylinder and a double wall structure of an outer wall and an inner wall by an arc-shaped cut extending downward from the upper end of the outer cylinder. In the hinge cap provided with an axially breakable groove, and provided with an axially breakable groove in the inner wall portion in a continuous manner with the axially breakable groove,
A hinge cap characterized in that circumferentially breakable grooves are provided on both sides of the double wall structure portion at a boundary portion between an outer peripheral cylinder and a horizontal flange of the cap body over approximately a half circumference. The outer peripheral surface of the outer peripheral cylinder in the cap body is eccentric to the hinge connecting part side of the cap lid body with respect to the inner peripheral surface, and the arc-shaped cut is formed on the hinge connecting part side of the cap cover body in the outer peripheral cylinder. The hinge cap according to claim 2, wherein the hinge cap is provided. The arcuate cut has a circumferential angle set to 62 ° so that both ends in the circumferential direction are positioned in the vicinity of both ends in the circumferential direction of the hinge connecting portion of the cap lid. The hinge cap according to any one of claims 1 to 3.

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