JP2010235146A - Hinge cap with improved tamper evidence property - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge cap which clearly shows the evidence of opening of an upper lid. <P>SOLUTION: On a lower part of the outer surface of a skirt 34 of the upper lid 2, a projecting piece 45 is formed in the opposite side of a hinge connecting part. An opening evidence elastic member 50 is connected to the lower surface of the projecting piece by a bridge 57 which can be ruptured. The opening evidence elastic member is composed of a pair of locking rods 53 which are integrally continuous to each other. Each of the locking rods is composed of a base 53a extending downward and a locking part 53b continuous from the lower end of the base and extending upward so as to get away from the base. In the part where the opening evidence elastic member is positioned when the upper lid is closed, a support restricting member 51 is provided on the outer surface of a tubular sidewall 6 of the cap body 1. The support restricting member 51 allows lowering of the opening evidence elastic member, but restricts elevation of the opening evidence elastic member by locking with the locking part of the opening evidence member upon opening of the upper lid, and retains the opening evidence elastic member which is separated from the upper lid. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hinge cap having tamper evidence on an upper lid.

  A hinge cap in which an upper lid is hinge-connected to a cap body attached to a container mouth is used for various applications as a cap of a container filled with various seasonings, for example. Further, the caps of various containers are generally required to have an opening history function, that is, tamper evidence (TE property) in order to prevent tampering and guarantee the quality of the container contents. For general users, if the fact that the cap is not opened can be recognized, the user may damage the score by pulling the pull ring by a third party before purchasing the product, and then closing the top lid again. Not only can it be avoided, but a certain quality is guaranteed for the container contents.

  Various types of hinge caps such as those described above that have TE properties that can easily recognize the fact that the upper lid has been opened from the state in which the upper lid is closed have been proposed.

  For example, Patent Documents 1 and 2 are provided with a belt-like cover that covers the outer peripheral surface of the unsealing bag when the upper lid is closed, and this belt-like cover has a weakening line or score that can be broken. And is connected to the outer surface of the cylindrical side wall of the cap body. That is, unless the strip cover is peeled off from the outer surface of the cylindrical side wall of the cap body, the closed upper lid cannot be opened, and the outer peripheral surface of the unsealing bag is covered with the strip member. The fact that the upper cover is opened by peeling off the belt-like member can be recognized.

  Further, in Patent Document 3, an upward elastic engagement piece that can be peeled off is provided on the cap body (lid body), and a pair of left and right hook portions are provided on an opening lid of the upper lid that is hinged to the cap body. Hinge caps have been proposed. In this hinge cap, when the upper lid is closed, the elastic engagement piece of the cap body is elastically deformed and inserted into the gap between the left and right hook portions, and in the inserted state, the elastic engagement piece is elastic to the original shape. When the upper lid is opened, when the upper lid is opened, the hook portion rises together with the opening hook, so that the elastic engagement piece of the cap body is firmly engaged with the hook portion. As a result, the elastic engagement piece Is lifted integrally with the upper lid (opening bag) and peeled off from the cap body, and the fact that the upper lid has been opened can be recognized by peeling off the elastic engagement piece. .

JP 2004-175436 A JP-A-2005-212813 JP 2000-128219 A

However, in order to open the upper lid, the hinge cap proposed in Patent Documents 1 and 2 must peel off the belt-like cover provided on the cap body side before the upper lid is opened. There is a problem that the opening work is troublesome.
In addition, the cap in a state where the belt-shaped cover is peeled off is difficult for the user to recognize that the cover has been peeled off, and it may be recognized that the cover was originally missing.

  On the other hand, the hinge cap of Patent Document 3 does not require any special work prior to the opening of the upper lid, and it is only necessary to pull the upper lid upward as it is. is there. That is, in this hinge cap, when the opened upper lid is closed again while the elastic engagement piece is held, the upper lid is closed with the elastic engagement piece being provided on the cap body without being separated. In general, a user may mistakenly recognize that the elastic engagement piece is not cut off even though the elastic engagement piece is cut off.

  Further, in this hinge cap, when the upper lid is opened, the elastic engagement piece is firmly engaged with the opening lid (hook portion) of the upper lid, and the elastic engagement piece is easily removed from the opening lid. In addition, there is a problem that the operation of opening and closing the upper lid is difficult in a state where the elastic engagement piece is engaged and held by the opening hook.

Therefore, an object of the present invention is to provide a hinge cap that can open the upper lid as it is without requiring any special work prior to opening the upper lid, and that clearly shows the fact that the upper lid has been opened. is there.
Another object of the present invention is to allow easy removal of a member indicating the opening fact after opening the upper lid. Further, even when the member indicating the opening fact of the upper lid is not removed, the upper lid can be opened and closed. The object is to provide a hinge cap capable of performing the above without any adverse effects.

According to the present invention, a cap body having a top plate portion and a cylindrical side wall that descends from the periphery of the top plate portion, and a container mouth portion is fitted and fixed inside the cylindrical side wall; and
It has a top plate portion and a skirt portion that descends from the periphery of the top plate portion, and the lower end portion of the skirt portion is connected to the upper end portion of the cylindrical side wall of the cap body by a hinge connection, and opens and closes with respect to the cap body Possible lids;
And when the upper lid is closed, the outer peripheral edge of the top surface of the top plate portion of the cap body and the lower end surface of the skirt portion of the top lid face each other. In the hinge cap having a circumferential protrusion that can engage with the inner surface portion of the skirt portion of the upper lid when the upper lid is closed,
On the lower part of the outer surface of the skirt portion of the upper lid, a protruding piece protruding outward is formed on a portion located on the side opposite to the hinge connecting portion, and the lower surface of the protruding piece has an elastic property for clearly indicating opening. The members are connected by a breakable bridge,
The opening-sealing elastic member is composed of a pair of locking rods that are integrally connected to each other. The locking rods are respectively connected to a base portion extending downward and a lower end of the base portion, and upward. A locking portion extending away from the base toward the base,
On the outer surface of the cylindrical side wall of the cap body, the opening-declaring elastic member is allowed to descend in a portion where the opening-declaring elastic member is located when the upper lid is closed, but the opening-declaring elastic member There is provided a support restricting member for restricting the opening explicit elastic member from being lifted when the upper lid is opened by engagement with the engaging portion of the upper opening and holding the elastic revealing member separated from the upper lid. A hinge cap is provided.

In the hinge cap of the present invention,
(1) The support restricting member extends in the circumferential direction of the cylindrical side wall and with an interval from the outer surface of the cylindrical side wall, and both end portions thereof are connected to the outer surface of the cylindrical side wall. Formed of a rod and a holding rod extending downward from the central portion of the regulating rod and connected to the outer surface of the cylindrical side wall, and when the upper lid is closed, When the locking portion of the locking rod is elastically deformed and passes through the space between the regulating rod of the support regulating member and the outer surface of the cylindrical side wall, and the upper lid is opened, the opening explicit elasticity When the locking rod engages with the restriction rod, the rise of the member is restricted. As a result, the elastic member for clarification of opening is separated from the upper lid and the elastic for clarification of opening is separated from the upper lid. The member is a pair of Interval between sets is by resting on the retaining rod of the support restricting member, it is held by the support regulating member,
(2) On the top plate portion of the upper lid, a portion located above the projecting piece to which the elastic member for unveiling is connected is projected outward to form an unsealing trough,
Is preferred.

  In the hinge cap of the present invention, the upper lid connected to the cap body by hinge connection is provided with an elastic member for revealing the opening of the upper lid, and the cap body is provided with the elastic member for revealing the opening. A support restricting member is provided for restricting the rising and holding the elastic member for revealing the opening that is separated from the upper lid. That is, when the closed upper lid is opened, the rise of the unsealing elastic member is regulated by a support regulating member (for example, a regulating rod), and as a result, is separated from the upper lid. In other words, the general user can recognize the fact that the upper lid has been opened by looking at the state where the elastic member for revealing the seal is separated from the upper lid, and therefore has excellent tamper evidence. (TE property) is shown. In addition, the elastic member for unfolding clearly separated from the upper lid is held so as not to drop off by the support regulating member (for example, holding rod) of the cap body, but even if the upper lid opened in this state is closed as it is, Since the elastic member for demonstrating opening that has been separated can be clearly seen from the outside that it is in a state separated from the upper lid, the user generally does not mistake the fact that the upper lid has been opened, and reliably Can be recognized, and excellent TE property can be secured.

  Separation from the upper lid of the above-mentioned opening indication member is automatically performed according to the opening of the upper lid, and no special work is required prior to opening the upper lid in order to clearly show the opening of the upper lid. .

  In addition, since the elastic member for revealing the opening is separated from the upper lid and is held by the support regulating member, it exists on the cap body side and is away from the upper lid, so that it does not hinder the subsequent opening / closing operation of the upper lid. .

It is a figure which shows the side surface cross section in the state by which the upper cover opened the hinge cap of this invention. It is a top view of the hinge cap in the state of FIG. It is a bottom view of the hinge cap in the state of FIG. It is a right view of the hinge cap of FIG. It is a left view of the hinge cap of FIG. FIG. 2 is a side view showing the interrelationship between a member for revealing unsealing and a support regulating member in the process of closing the upper lid for the hinge cap of FIG. 1. It is a side view which shows the mutual relationship of the member for opening clarification when opening the closed upper cover about a hinge cap of FIG. 1, and a support control member. It is a side view which shows the state of the member for clarification of opening when the upper cover opened once is closed again about the hinge cap of FIG.

  Referring to FIGS. 1 to 3, this hinge cap is composed of a cap body 1 and an upper lid 2, and the cap body 1 is roughly suspended from a top plate portion 5 and a peripheral portion of the top plate portion 5. It is comprised from the cylindrical side wall 6 which has.

  A locking portion 7 is formed on the inner surface of the lower end of the cylindrical side wall 6, and an inner ring 9 is formed on the inner surface of the top plate portion 5 so as to extend downward with a space from the cylindrical side wall 6. Has been. That is, the container body (not shown) is fitted into the space between the inner ring 9 and the cylindrical side wall 6 so that the cap body 1 is attached to the container mouth, The container mouth is firmly fixed.

  In addition, the notch 7a is formed in the latching | locking part 7 with the appropriate space | interval in the circumferential direction, The flexibility of the latching | locking part 7 is improved by such a notch 7a, and a container mouth part And the ease of removal when the cap is removed from the container mouth is improved.

  A score 10 for forming a dispensing opening is formed on the top plate portion 5, and a pull ring 12 for breaking the score is provided on the top surface side of the top plate portion 5 via a column 11. . That is, when the pull ring 12 is pulled, the score 10 is broken, and an opening for pouring out the contents is formed in the top plate portion 5.

  Furthermore, on the upper surface side of the top plate portion 5, a cylindrical projection 14 for guiding the pouring liquid is formed so as to surround the score 10, and the content liquid poured out through the pouring opening is It is guided by this cylindrical projection 14. The upper end of the cylindrical projection 14 spreads out in a trumpet shape so that the liquid can be smoothly discharged, and as shown in FIG. 1, a hinge connecting portion 25 with the upper lid 2 described later. On the side, the cylindrical projection 14 is formed with a low profile so as not to obstruct the swirling of the sealing projection (described later) formed on the inner surface of the top plate 2 of the upper lid 2 when the upper lid 2 is closed. ing. Further, a circumferential protrusion 16 for holding the upper lid 2 is formed on the outer side of the cylindrical protrusion 14.

  Further, the approximately half-circumferential portion of the cylindrical side wall 6 of the cap body 1 on the hinge connecting portion 25 side is divided into an inner wall 6a and an outer wall 6b by an arcuate slit 20 extending downward from the upper end. A double wall structure in which 6a and the outer wall 6b are connected at the lower end is formed. Such a double wall structure is formed so that the cap body 1 after the container content liquid is poured out can be easily removed from the container mouth.

  The upper lid 2 is hinged to the upper end portion of the cylindrical side wall 6 of the cap body 1 (particularly, the outer wall 6b formed by the slit 20). This hinge connecting portion is indicated by 25 and, as can be understood from FIG. 2, is formed of a wide band portion 25a at the center and small band portions 25b and 25b on both sides thereof.

  Further, axial scores 30, 30 extending from the upper end to the lower end or the vicinity thereof are formed on the outer wall 6b in the vicinity of the hinge connecting portion 25 (see FIG. 2), although not shown. The inner wall 6a is also formed with an inner score extending upward from the lower end so as to correspond to the axial scores 30,30. That is, when the upper cover 2 is opened and pulled down, the scores 30 and 30 are torn, the outer wall 6b is broken, and then the upper wall 2b is pulled up to break the score of the inner wall 6a. The cap body 1 can be removed from the container mouth without using a special tool.

  The upper lid 2 hinged to the cap body 1 as described above is formed from the top plate portion 32 and the skirt portion 34 extending from the periphery of the top plate portion 32.

  In the top plate portion 32, a portion opposite to the hinge connecting portion 25 projects outward to form an opening jar 35, and the upper lid 2 is opened and closed with the opening ridge 35. It has become.

  A circumferential protrusion 36 for sealing is formed on the inner surface of the top plate portion 32. That is, when the upper lid 2 is pivoted and closed, the sealing circumferential protrusion 36 comes into close contact with the inner surface of the cylindrical protrusion 14 for guiding the discharged liquid. Sealability after opening is ensured.

  In addition, an arc-shaped protrusion 37 is provided on the inner surface of the top plate portion 32 on the outer side of the circumferential protrusion 36 and on the hinge connecting portion 25 side. The arc-shaped protrusion 37 is formed to be slightly longer than the sealing peripheral protrusion 36. That is, by forming such an arc-shaped protrusion 37, when a pressing force is accidentally applied to the closed upper lid from the upper side in the production line or the sales process, the arc-shaped protrusion 37 is formed into the cap body 1. It is possible to effectively prevent inconveniences such as the contact with the upper surface of the top plate portion 5 and the circumferential protrusion 36 for sealing to dig deep and break the score 10.

  Further, a recess 39 is formed in the lower part of the inner surface of the skirt portion 34 of the upper lid 2, and the protrusion 16 a at the upper end of the circumferential protrusion 16 is closed by engaging with the recess 39. The upper lid 2 is held stably.

  Further, a small protrusion 40 for preventing liquid splash is formed on the lower end surface of the skirt portion 34 of the upper lid 2 except for a portion located on the side opposite to the hinge connecting portion 25. That is, the upper lid is opened, the score 10 is torn to form the content liquid pouring opening, and the content liquid is poured out through this opening. Of course, the upper lid does not interfere with the pouring. Thus, it is performed in the part on the opposite side to the hinge connection part 25. Therefore, in the part on the opposite side to the hinge connecting part 25, the content liquid poured out to the peripheral part of the top plate part 5 of the cap body 1 often adheres due to dripping or the like. If the upper lid 2 is closed in such a state, due to the close contact of the lower end surface of the skirt portion 34, the attached content liquid is blown off, causing the inconvenience of contaminating the surroundings. However, if the small protrusion 40 for preventing liquid splash is formed as described above, when the upper lid 2 is closed, the lower end surface of the skirt portion 34 and the cap body 1 at the portion opposite to the hinge connecting portion 25. A gap is formed between the top plate portion 5 and the peripheral surface of the top plate portion 5, thereby making it possible to effectively prevent the content liquid from adhering and splashing.

In the hinge cap having the structure as described above, in the present invention, the lower end portion of the skirt portion 34 of the upper lid 2 and the portion opposite to the hinge connecting portion 25 (that is, the lower position portion of the opening lid 35 described above) ) Is provided with a protruding piece 45 projecting in the horizontal direction, and an opening-opening elastic member 50 is provided on the lower surface of the protruding piece 45. Further, a support regulating member 51 is provided on the outer surface of the cylindrical side wall 6 of the cap body 1 on the opposite side of the hinge connecting portion 25 so as to correspond to the above-described elastic member for opening.
It should be noted that in FIGS. 1 to 3 described above and FIGS. 4 and 5 described below, the upper lid 2 is opened and shown in an inverted state, so that the vertical relationship is reversed. .

That is, referring to FIG. 4 and FIG. 5, the unsealing explicit elastic member 50 is composed of a pair of locking rods 53, 53, and the locking rods 53, 53 are integrally connected by a horizontal connecting portion 55. Each of the locking rods 53 includes a base portion 53a extending in an inclined direction away from each other downward (upward in the drawing) and a base portion curvedly connected to the lower end of the base portion 53a and upward. The locking portion 53b extends away from 53a.
The unsealing elastic member 50 is connected to the lower surface of the projecting piece 45 by a bridge 57 that can break the upper surface (lower surface in the drawing) of the horizontal connecting portion 55 that connects the locking rod 53. Yes.

  As understood from the shape of the elastic member 50 for revealing opening as described above, the locking rods 53 and 53 are formed so as to be elastically deformable in a direction toward each other and a direction away from each other.

On the other hand, the support restricting member 51 provided on the cap body 1 side includes a restricting rod 60 and a holding rod 61.
The restriction rod 60 extends in the circumferential direction of the cylindrical side wall 6 of the cap 1 and with an interval from the outer surface of the cylindrical side wall 6, and extends in the radial direction at both end portions to the outer surface of the cylindrical side wall 6. It is lined up. The holding rod 61 extends downward (upward in the drawing) from the circumferential center portion of the regulating rod 60, extends in the radial direction at the lower end portion, and continues to the outer surface of the cylindrical side wall 6.

  In the present invention, by providing the support restricting member 51 composed of the restricting rod 60 and the holding rod 61 as described above, when the upper lid 2 is closed, the opening explicit elastic member 50 having the above-described shape becomes the support restricting member 51. When entering the space to be formed and opening the upper lid 2, the rising of the opening explicit elastic member 50 is restricted, and as a result, the bridge 57 is broken and the opening explicit elastic member 50 is removed from the upper lid 2 (projection piece 45). The separated opening elastic member 50 is held by the holding rod 61 so as not to drop off.

That is, as shown in FIG. 6A, when the upper lid 2 is closed, the lower end portions of the locking rods 53, 53 of the unsealing elastic member 50 are defined by the restriction rod 60. The locking rods 53 and 53 (the base portions 53a and 53a and the locking portions 53b and 53b) are elastically deformed so as to close each other and are pushed downward to enter. Go. When the upper lid 2 is completely closed in this way, as shown in FIG. 6B, the locking portion 53b of the locking rod 53 passes through the regulating rod 60 and is released from the pressing force, It will return to its original expanded shape.
With the upper lid 2 closed in this manner, the hinge cap is attached to the mouth portion 70 of the container filled with the content liquid (see FIG. 6B) and is available for sale.

  As shown in FIG. 7, when the upper lid 2 is opened in the hinge cap attached to the mouth portion 70 of the container with the upper lid 2 closed, as shown in FIG. Since the locking portion 53b of the rod 53 has an expanded shape, the upper surface of both end portions of the locking portion 53b comes into contact with the lower surface of both end portions of the regulating rod 60 as it rises. Therefore, when the upper lid 2 is opened, the bridge 57 connecting the elastic member 50 for opening and tearing is broken, and the elastic member 50 for opening and closing is removed from the upper lid 2 (projection piece 45). Although the cut-off opening elastic member 50 is cut off, the base 53a is supported by the holding rod 61, and the drop-off is prevented.

  That is, when the upper lid 2 that has been opened at one end is closed again, as shown in FIG. 8, the cut-off opening elastic member 50 connects the base portions 53a and 53a of the locking rods 53 and 53 to each other. The horizontal connecting portion 55 is supported by being placed on the holding rod 61, and is prevented from falling off. Therefore, a general user can recognize the fact that the upper lid 2 is opened by looking at the state in which the opening-opening elastic member 50 is separated from the projecting piece 45 of the upper lid 2 and is dropped and held. It is. In this case, the larger the interval between the elastic member 50 for opening manifestation and the projecting piece 45 held by being dropped, the general user mistakenly recognizes that the elastic member 50 for explicit opening is cut off. And can be clearly recognized. On the other hand, if the length of the holding rod 61 in the vertical direction is too long, the dropped unwrapping elastic member 50 is easily detached from the regulating rod 60, which is not preferable from the viewpoint of tamper evidence.

  Further, in the present invention described above, as clearly shown in FIGS. 4 and 6, legs 45 a, 45 a are formed on the lower surfaces of both end portions of the projecting piece 45, the upper lid 2 is closed, and the opening-declaring elastic member 50. When the lower part of the locking rod 53 is elastically deformed and pushed into the space formed by the regulating rod 60, the tip of the foot 45a is the tip of the locking rod 53 (locking portion 53b). It is desirable to have a structure that contacts the part. By adopting such a structure, the stress concentration on the bridge 57 is relieved when the elastic member 60 for revealing opening passes through the space formed by the regulating rod 60, and the bridge 57 is broken at this stage, that is, Further, it is possible to effectively prevent the elastic member 50 for opening clarification from being separated, and to suppress the occurrence of product defects.

  Further, in the structure as described above, the opening and closing elastic member 50 is held by the holding rod 61, and there is no problem in opening and closing the upper lid 2. That is, the upper lid 2 is not only separated from the upper lid 2 but also opened / closed by the opening lid 35 formed on the upper portion of the upper lid 2 away from the separated elastic member 50 for revealing opening. It is.

  In the present invention, the size of the regulating rod 60 forming the support regulating member 51 described above is determined according to the shape of the unsealing explicit elastic member 50 in the space formed by the regulating rod 60. 50 is elastically deformed, and when the lower portion of the locking rod 53 of the unsealing elastic member 50 that has passed through this space is elastically restored, it engages with the restriction rod 60 and its rise is restricted. It is set to such a size.

  Further, the size (particularly the length in the axial direction) of the holding rod 61 forming the support regulating member 51 is set in consideration of the TE property that clearly indicates the opening of the upper lid 2. That is, when the axial length of the holding rod 61 is increased, the cut-off explicit elastic member 50 is easily detached from the support restricting member 51, and the open-open elastic member 50 is not from the beginning. May be recognized as TE, and the TE property may not be sufficiently exhibited. Moreover, since the space | interval with the protrusion piece 45 currently formed in the upper cover 2 will become short if the axial direction length of the holding rod 61 is too short, the elastic member 50 for opening clarification separated is not separated. There is a risk of being misidentified. Therefore, it is preferable to set the size so that such misperception can be surely prevented and sufficient TE property is exhibited.

  Furthermore, in the present invention, various design changes are possible. For example, the base 53a of the locking rod 53 forming the opening-sealing elastic member 50 does not necessarily extend in a downwardly inclined state. There is no need to That is, as long as at least the locking portion 53b is elastically deformed and passes through the space formed by the regulating rod 60, the locking portion 53b that has passed through this space is elastically restored, and its rise is regulated by the regulating rod 60. The base portion 53a extends in the vertical direction, and the base portion 53a can be configured not to be elastically deformed when passing through the space. The horizontal connecting portion 55 is made thick so that the length of the base portion 53a is increased. Can be shortened.

Moreover, the opening piece 40 is not formed on the top plate portion 32, and the above-described protruding piece 45 supporting the opening-opening elastic member 50 can also be used as the opening piece.
Further, from the viewpoint of sorting and disposal, the slit 20 can be formed over the entire circumference of the cylindrical side wall 6 of the cap body 1, particularly the entire circumference. Further, the outer wall 6 b formed by the slit 20 can be circumferentially formed. Is provided with a score extending to the upper side, the circumferential score is broken by holding the upper lid 2, and the outer wall 6b is torn to reduce the fitting force between the cap body 1 and the container mouth, so that the cap body 1 is placed in the container mouth. It is possible to adopt a known means such as removing from the container to improve the sorting and discarding property.

1: Cap body 2: Upper lid 5: Top plate part 40: Opening bowl 45: Protruding piece 50: Opening explicit elastic member 51: Support restricting member 53: Locking rod 53a: Base 53b: Locking part 55: Connecting part 57 : Bridge 60: Regulating rod 61: Holding rod

Claims (3)

A cap body having a top plate portion and a cylindrical side wall descending from the periphery of the top plate portion, and a container mouth portion fitted and fixed inside the cylindrical side wall; and
It has a top plate portion and a skirt portion that descends from the periphery of the top plate portion, and the lower end portion of the skirt portion is connected to the upper end portion of the cylindrical side wall of the cap body by a hinge connection, and opens and closes with respect to the cap body Possible lids;
And when the upper lid is closed, the outer peripheral edge of the top surface of the top plate portion of the cap body and the lower end surface of the skirt portion of the top lid face each other. In the hinge cap having a circumferential protrusion that can engage with the inner surface portion of the skirt portion of the upper lid when the upper lid is closed,
On the lower part of the outer surface of the skirt portion of the upper lid, a protruding piece protruding outward is formed on a portion located on the side opposite to the hinge connecting portion, and the lower surface of the protruding piece has an elastic property for clearly indicating opening. The members are connected by a breakable bridge,
The opening-sealing elastic member is composed of a pair of locking rods that are integrally connected to each other. The locking rods are respectively connected to a base portion extending downward and a lower end of the base portion, and upward. A locking portion extending away from the base toward the base,
On the outer surface of the cylindrical side wall of the cap body, the opening-declaring elastic member is allowed to descend in a portion where the opening-declaring elastic member is located when the upper lid is closed, but the opening-declaring elastic member There is provided a support regulating member for regulating the opening explicit elastic member when the upper lid is opened by engagement with the engaging portion of the first opening and holding the elastic member for unfolding separated from the upper lid. A hinge cap characterized by being made. The support regulating member extends in the circumferential direction of the cylindrical side wall and with an interval from the outer surface of the cylindrical side wall, and a regulating rod having both end portions connected to the outer surface of the cylindrical side wall; A holding rod extending downward from the central portion of the restriction rod and connected to the outer surface of the cylindrical side wall;
When the upper lid is closed, at least the locking portion of the locking rod is elastically deformed in the opening-clarifying elastic member so that a space between the regulating rod of the support regulating member and the outer surface of the cylindrical side wall is formed. Pass through
When the upper lid is opened, the rise of the opening explicit elastic member is restricted by the engagement of the locking rod with the restriction rod, and as a result, the opening explicit elastic member is separated from the upper lid. 2. The hinge according to claim 1, wherein the unsealing elastic member separated from the upper lid is held by the support restricting member by placing the pair of base portions on the holding rod of the support restricting member. cap.   The top plate portion of the upper lid has a portion positioned above the protruding piece to which the elastic member for unfolding is connected, projecting outward to form an unsealing trough. Hinge cap.

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