JP5288714B2 - Hinge cap with sorting mechanism - Google Patents

Description

  The present invention relates to a hinge cap comprising a cap main body fitted and fixed to a container mouth portion, and an upper lid provided on the cap main body through a hinge connecting portion so as to be opened and closed. The present invention relates to a hinge cap with a separation mechanism that can be easily removed from the container mouth portion and disposed of later and is excellent in separation and disposal.

  A cap composed of a cap body fitted and fixed to the container mouth portion and an upper lid that can be freely opened and closed on the cap body via a hinge connecting portion is a cap of a container filled with various beverages or seasonings, for example. It is used for various purposes. Recently, from the viewpoints of resource reuse, garbage incineration, etc., such caps are required to be separated and disposed of. For example, used caps after taking out the container contents can be used without using special tools. Caps having various structures have been proposed so that can be removed from the container mouth.

For example, in Patent Document 1, a longitudinal weakening line that passes through one side of a wide thin rotation pivot fulcrum hinge root is formed on the outer peripheral wall, and a continuous circumferential weakening line is formed inside the thin rotation pivot fulcrum hinge root. A hinge cap having a structure formed along the fitting upper wall is described.
In Patent Document 2, a slit extending downward from the upper end of the cylindrical side wall has a slit extending over a half or more of the circumference of the cylindrical side wall. A first slit formed in a hinge connecting portion with the upper lid, and a second slit formed in a portion other than the hinge connecting portion and continuing to the first slit. The first slit is formed deep to the vicinity of the lower end of the cylindrical side wall, and the second slit is formed shallower than the first slit, and the first slit is formed on the outer wall along both ends of the first slit. A hinge cap is described in which a score of 1 is formed and a second score is engraved on the engagement protrusion on the inner wall.
In Patent Document 3, a locking protrusion that is undercut-coupled to the container mouth is provided on the inner peripheral surface of the outer cylinder of the cap body so as to be unbreakable on the front outer peripheral surface and the outer peripheral surface of the outer cylinder. The outer cylinder is surrounded by a ring body continuously provided through a continuous piece and a breakable weakening portion, a lid body is integrally provided on the ring body via a hinge provided on the rear side, and the cap body is formed on the container mouth portion. A hinge cap with the outer cylinder and ring body abutting or close to each other in the assembled state, and the strength of the outer cylinder assembled to the container mouth is set so that it can be removed by forcibly pulling up the lid manually. Is described.
JP 2001-151258 A JP 2000-142758 A JP 2003-246338 A

In these caps described in the literature, an engagement ridge (undercut) that engages with the container mouth is formed on the inner surface of the skirt portion. The bridge part connecting the skirt part and the outer cylinder is broken. That is, when the cap body is fixed to the container mouth portion, the skirt portion is hooked with the outer cylinder, so that the cap body and the container mouth portion are firmly engaged with each other. The sex can be secured.
When the hinge cap disclosed in Patent Documents 1 to 3 is removed from the container mouth portion of the cap body, tearing of the outer cylinder score is performed by the consumer holding the upper lid by hand and pulling it down or pulling up. Is done by doing. However, with regard to such first-stage tearing, the variety of separation methods can be confusing to the consumer, and in some cases, the consumer can pull the top lid in a strong and wrong direction in the first stage, thereby It may be torn off from the cap body and cannot be separated.

Accordingly, an object of the present invention is to provide a hinge cap having excellent separation and discarding properties that can easily remove the cap body from the container mouth while avoiding a decrease in engagement force between the container mouth and the cap body. There is.
In particular, an object of the present invention is to provide a hinge cap that facilitates the first-stage operation when removing the cap body from the container mouth.

(1) A hinge cap with a separation mechanism according to the present invention has a top plate portion and a cylindrical side wall lowered from the periphery of the top plate portion, and a cap main body in which a container mouth is fitted and fixed inside the cylindrical side wall, A hinge cap comprising an upper lid provided on the cap body so as to be freely opened and closed via a hinge connecting portion,
The cylindrical side wall of the cap body, at least in part, comprises an inner wall part, an outer wall part located around the inner wall part, a lower end of the inner wall part, and a connecting part that connects the outer wall part,
In the vicinity of the hinge connecting portion of the outer wall portion, an axial direction weakening line made of a tearable score extending in the axial direction from the upper end to the lower end of the outer wall portion is formed, and notches are provided above and below the score. And
In the connecting portion, a circumferential weakening line extending in the circumferential direction from the axial weakening line toward the hinge connecting portion is formed,
The circumferential weakening line is provided with a tear start region for starting tearing, and a tear progress region following the tear start region, and a region combining the tear start region and the tear progress region is 180 to Formed over a range of 315 degrees, the remaining area forms a fixed area,
The tear start area of the circumferential weakening line is a score or a slit extending in the circumferential direction over at least 30 degrees toward the hinge connection part starting from the axial weakening line,
The tear strength of the tear start region is formed to be smaller than the tear strength of the tear progress region, and the connecting portion in the fixing region is formed thicker than the connecting portion in the tear progress region. Features.
(2) The hinge cap with a separation mechanism according to the present invention is characterized in that, in the above (1), the tearing progress region is composed of a combination of a score and a bridge portion or a slit and a bridge portion.
(3) In the hinge cap with a separation mechanism of the present invention, in (1) or (2), at least one rib extending along the axial direction weakening line is provided on the outer peripheral surface of the outer wall portion. It is characterized by being.

  The hinge cap with a separation mechanism of the present invention is an axial direction formed on the outer wall portion with an upper lid to remove the cap body from the container mouth portion of the used hinge cap after taking out the liquid in the container. The weakening line can be torn from either the top or bottom, and it is only necessary to hold the edge of the torn outer wall in the circumferential direction so that the outer wall can be easily peeled off from the inner wall. Thus, it is possible to remove the cap body from the container mouth, and it is possible to improve the disposal efficiency after use while securing a high engagement force between the cap body and the container mouth before use.

The present invention will be described below based on specific examples shown in the accompanying drawings.
FIG. 1 is a side cross-sectional view of the hinge cap according to the embodiment of the present invention with the upper lid closed, and FIG. 2 is a top view of the hinge cap of FIG. 1 with the upper lid opened. 3 is a bottom view of the hinge cap of FIG. 1 with the upper lid opened, FIG. 4 is a side view of the hinge cap of FIG. 1 with the upper lid opened, and FIG. FIG. 6 is a rear view of the hinge cap of FIG. 1 with an upper lid removed, FIG. 6 is a cross-sectional view of a cylindrical side wall at each position of FIG. 3, and FIG. 7 is a hinge of another embodiment; FIG. 8 is a sectional view of the cylindrical side wall at a position corresponding to FIG. 6 of the cap, and FIG. 8 is a side view showing a state in which the outer wall portion of the hinge cap of FIG. FIG. 9 is a top view of FIG. 8.

  A hinge cap according to an embodiment of the present invention will be described in detail with reference to FIGS. First, referring to FIG. 1, the hinge cap includes a cap body 1 and an upper lid 2, and the cap body 1 mainly includes a top plate portion 5 and a cylindrical side wall 6 that hangs down from a peripheral portion of the top plate portion 5. It consists of.

  An inner ring 9 hangs down on the inner surface of the top plate portion 5 at a distance from the cylindrical side wall 6, and the container opening 60 is fitted into the space between the inner ring 9 and the cylindrical side wall 6. As a result, the cap body 1 seals the container opening 60.

  The top plate portion 5 is formed with a score 10 for forming a dispensing opening. On the top surface side of the top plate portion 5, a score breaking pull ring 11 is provided via a support column 13, By pulling the pull ring 11, the score 10 is broken, and an opening for pouring out the contents is formed in the top plate part 5.

  Furthermore, a cylindrical projection 15 for guiding the poured liquid is formed on the upper surface side of the top plate portion 5 so as to surround the score 10, and the content liquid poured out through the dispensing opening is It is guided by this cylindrical projection 15. The upper end of the cylindrical protrusion 15 spreads out in a trumpet shape so that the liquid can be smoothly discharged. Further, on the hinge connecting portion 25 side, the cylindrical protrusion 15 is formed with a low back, and the upper lid 2 The upper lid 2 is configured not to obstruct the turning of the upper lid 2 when closing. In addition, a circumferential protrusion 17 for holding the upper lid 2 is formed outside the cylindrical protrusion 15.

Further, the cylindrical side wall 6 of the cap body 1 includes an inner wall portion 6a, an outer wall portion 6b positioned around the inner wall portion 6a, and a connecting portion 6c that connects the lower end of the inner wall portion 6a and the outer wall portion 6b. In this embodiment, the inner wall portion 6a and the outer wall portion 6b are partitioned by a gap 20 that extends downward from the upper end over the entire circumference of the cylindrical side wall 6.
In addition, it is not necessary for the cylindrical side wall 6 to have a gap 20 formed between the inner wall portion 6a and the outer wall portion 6b over the entire circumference. It is possible to remove the cap body fitted and fixed to the mouth.

  A plurality of thick engaging projections 23 are formed at predetermined intervals on the inner wall portion 6 a of the cylindrical side wall 6 over the entire inner surface of the lower end, and engage with the outer surface of the container mouth portion 60. As a result, the cap body 1 is fixed to the container mouth portion 60.

Further, referring to FIG. 2, the upper lid 2 is connected to the cap body 1 by a hinge connecting portion 25 at an upper end portion of the outer side wall portion 6 b of the cylindrical side wall 6, and the hinge connecting portion 25 is a central wide band portion. 25a and narrow band portions 25b and 25c on both sides thereof.
The outer wall 6b has a shaft extending in the axial direction so as to be thin and tearable from the upper end to the lower end in the vicinity of one end of the hinge connecting portion 25 (one narrow band 25b in FIG. 2). The direction weakening line 27 is formed, and removal of the cap body 1 from the container mouth 60 can be started by tearing the axial direction weakening line 27.
The shape of the axial direction weakening line 27 consists of a score (thin line) in which the thickness of the wall of the outer wall portion 6b is partially reduced .
In the vicinity of the other end of the hinge connecting portion 25 (the narrow band portion 25c in FIG. 2), another axial weakening extends downward from the upper end of the outer wall 6b to the middle of the outer wall 6b. A line 26 is provided. By providing the two axial weakening lines, the axial weakening line of the outer wall portion is torn and the container mouth portion can be easily removed.

  Further, short cutout portions 27 a and 27 b are provided at the upper end and the lower end of the axial direction weakening line 27. The notches 27 a and 27 b are notched provided as a trigger for easily tearing the axial direction weakening line 27. Note that it is desirable that at least one rib extending in the axial direction along the axial direction weakening line 27 is provided on the outer peripheral surface of the outer wall portion 6b, which will be described later.

  As described above, the upper lid 2 hinged to the upper end portion of the outer side wall portion 6 b of the cylindrical side wall 6 is formed from the top plate portion 31 and the skirt portion 33 extending from the periphery of the top plate portion 31. Yes. A circumferential projection 35 for sealing is formed on the inner surface of the top plate portion 31. When the upper lid 2 is turned and closed, the circumferential projection 35 for sealing is a cylindrical projection 15 for guiding the discharged liquid. By closely adhering to the inner surface, the score 10 is broken, and the sealing performance after forming the dispensing opening is ensured.

  On the outer surface of the skirt portion 33 of the upper lid 2, an opening heel 40 is provided on the opposite side of the hinge connecting portion 25. A flat protrusion 41 for preventing slipping is formed on the lower surface of the opening bag 40. The upper lid 2 can be easily opened by hooking the flat protrusion 41 with a finger and lifting the upper lid 2 upward.

  Next, as shown in FIG. 2, a circumferential weakening line 28 extends from the axial weakening line 27 toward the hinge connecting portion 25 side at the connecting portion 6 c that connects the lower end of the inner wall portion 6 a and the outer wall portion 6 b. And extending in the circumferential direction. In FIG. 3, since the circumferential weakening line 28 cannot be seen when viewed from below, it is temporarily shown as a broken line. The circumferential weakening line 28 is divided into a tear start region X for starting tearing and a subsequent tear progress region Y, and the tear strength of the tear start region X is the tear strength of the tear progress region Y. It is formed to be smaller.

The tear start region X extends in the circumferential direction over at least 30 degrees of the entire circumference of the cylindrical side wall 6 through the hinge connecting portion 25 side, starting from the axial weakening line 27 formed in the outer wall portion 6b. The tear progress region Y is formed over the region between the end point of the tear start region X and the start point of the fixed region Z that is the end point of the circumferential weakening line 28. Therefore, the axial direction weakening line 27 is located between the fixed region Z and the tear start region X.

  In the tear start region X, the space 20 that defines the inner wall portion 6a and the outer wall portion 6b and the space that forms the axial weakening line 27 are combined to form a large volume. The connecting portion 6c that connects the lower end portion of the wall portion 6a and the outer wall portion 6b is connected by a thin wall of a score 20a that forms the lower end of the gap 20 (see A in FIG. 6), and the outer wall portion 6b is connected to the inner wall portion. It is easy to tear from 6a.

  On the other hand, in the tearing progress region Y, the connecting part 6c that connects the lower end of the gap 20 and the outer wall part 6b has a bridge part 20b (see B in FIG. 6) where the lower end of the gap 20 is thick and a thin score 20c (see FIG. 6). 6), and is an area where force is required to tear the outer wall 6b from the inner wall 6a. That is, the circumferential weakening line 28 includes a tear start region X for easily starting tearing of the upper lid in the circumferential direction, and a tear progress region Y following the tear start region X, and the tear strength of the tear start region X is high. It is formed so as to be smaller than the tear strength of the tear progress region Y. A, B, and C in FIG. 6 indicate cut surfaces at positions A, B, and C in FIG.

  As shown in FIG. 7, the circumferential direction weakening line 28 forms a slit 20 d (see E in FIG. 7) having no bottom at the lower end of the gap 20 in the tear start region X, and is thick in the tear progress region Y. A combination of the meat bridging portion 20e (see FIG. 7F) and the bottomless slit 20f (see FIG. 7G) can also be used. In addition, E, F, and G of FIG. 7 show cut surfaces at positions corresponding to the positions of A, B, and C in FIG.

  To remove the cap body 1 from the container opening 60, first, as a first step, the upper lid 2 is held down by hand or pulled down, or the upper lid 2 is pulled up to tear the axial weakening line 27. Start with that. In this case, the axial direction weakening line 27 is formed at one or both ends of the hinge connecting portion 25 of the upper lid 2, and the upper lid 2 is provided with cutout portions above and below the axial direction weakening line 27. When pulling down or pulling up, the axial weakening line can be easily torn from any direction.

After tearing the axial direction weakening line 27, the inner wall portion 6a and the outer side are formed by holding the torn outer wall portion 6b by hand and rolling it toward the tear start forehead region X (in the direction of arrow g in FIG. 2). The connection part 6c with the wall part 6b can be torn, and the outer wall part 6b can be torn from the inner wall part 6a in the direction of arrow g in FIG.
In order to make it easy to start this tearing, in the tearing start region X connected to the portion of the axial weakening line 27, the bottom of the gap 20 is formed with a thin score 20a in the embodiment of FIG. 6A), and in the embodiment of FIG. 7, the gap 20 penetrates the cylindrical side wall 6 (E of FIG. 7), so when the axial direction weakening line 27 is torn, this tear start region X The outer wall 6b can be easily rolled up in the circumferential direction and hooked with a finger to easily wind the outer wall 6b in the circumferential direction.

  That is, in the axial direction weakening line 27 which is the tear start portion in the direction of the arrow g, as is apparent from the cross-sectional views of A or E shown in FIGS. Since the connecting part 6c that connects the part 6b is formed thinly or the gap 20 is formed so as to penetrate therethrough, the tearing start region X having a low tearing strength is stretched in the circumferential direction, and then the relative tearing strength is relatively high. When the strong tearing progress region Y is passed through the outer wall 6b in the circumferential direction of the arrow g as it is, the connecting portion 6c is torn, and accordingly, the outer wall 6b can be torn from the inner wall 6a.

  As shown in FIGS. 6 and 7, the notches 27a and 27b are formed in a wedge shape at the upper end and the lower end of the axial direction weakening line 27. If the length is about 1 mm, the function is achieved. However, if it is several mm, it is a sufficient length. That is, the notches 27a and 27b are provided so as to easily tear the axially weakening line 27 even if the upper lid 2 is used as a handle to lower or lift it in any direction. .

  In the fixed region Z following the tear progress region Y, the strong bridge portion 20g is thicker than the bridge portion 20b in the tear progress region Y as the connecting portion 6c that connects the end portion of the inner wall portion 6a and the outer wall portion 6b. It is formed into meat (see FIG. 6D and FIG. 7H). For this reason, even after tearing the tear progress region Y, the strong bridge 20g is difficult to tear in the fixed region Z, and the outer wall 6b torn from the inner wall 6a and connected to the upper lid 2 is It is connected to the cap body 1 in the fixed frame area Z. Therefore, it is possible to remove the cap body 1 from the container opening 60 while holding the upper lid 2 by hand. In addition, D of FIG. 6 which shows sectional drawing of the strong bridge part 20g in the fixed area | region Z, and H of FIG. 7 show the cut surface in the position of D in FIG.

The fixed region Z as described above is the remainder of the tear start region X and the tear progress region Y formed in the cylindrical side wall 6 , but the fixed region Z is not formed at all and the entire circumference is the tear start region. In the advancing region, the torn outer wall 6b is completely separated from the cap body 1, so that a portion that becomes a knob when the cap body 1 is removed from the container mouth portion 60 is lost and the cap is removed. Removal of the main body 1 from the container opening 60 becomes complicated. Further, the waste becomes two articles, that is, the cap body 1 and the torn outer wall portion 6b, which is not desirable in terms of handling the waste.
For this reason, a region obtained by combining the tear start region X and the tear progress region Y is set to a size (circumferential width) of 180 to 315 degrees, and the remaining portion is defined as a fixed region Z.

  On the other hand, if the axial direction weakening line 27 is torn and then the outer wall 6b in the tear start region X is peeled off from the inner wall 6a, the state shown in FIGS.

  In addition, two ribs 50 are partially provided on the outer peripheral surface of the outer wall 6 b in the vicinity of the axial direction weakening line 27 along the axial direction weakening line 27 so as to be partially thick. For this reason, when tearing the axial direction weakening line extended to the axial direction, the rib 50 suppresses a deformation | transformation of the outer side wall part 6b, and brings about the effect that it becomes easy to tear an axial direction weakening line. One rib 50 may be provided on either the left or right side of the axial direction weakening line 27.

  Thus, the hinge cap of the present embodiment can ensure a high engagement force between the cap body 1 and the container mouth 60, exhibits high sealing performance, and at the same time, without using a special tool, The cap body 1 can be easily peeled off from the container mouth portion 60, and exhibits excellent separation and disposal.

  The above-described hinge cap of the present invention can be manufactured by injection molding using each plastic, and the cap body and the upper lid are integrally molded in a state where the upper lid is opened, and then a predetermined gap is cut. It can be manufactured by forming by processing.

It is side surface sectional drawing in the state which closed the upper cover of the hinge cap of embodiment of this invention. It is a top view in the state where the upper lid in the hinge cap of FIG. 1 was opened. It is a bottom view in the state where the upper cover in the hinge cap of FIG. 1 was opened. It is a side view in the state where the upper cover in the hinge cap of FIG. 1 was opened. It is a rear view in the state which removed the upper cover in the hinge cap of FIG. It is sectional drawing of the cylindrical side wall in each position of FIG. It is sectional drawing of the cylindrical side wall in the position corresponding to FIG. 6 of the hinge cap of other embodiment. It is a side view which shows the state which peeled off the outer wall part in the hinge cap of FIG. 7 from the inner wall part. FIG. 9 is a top view of FIG. 8.

Explanation of symbols

1: Cap body 2: Upper lid 5: Item plate portion 6: Cylindrical side wall 6a: Inner side wall portion 6b: Outer wall portion 6c: Connection portion 9: Inner ring 10: Score 11: Pull ring 11
13: support 15: cylindrical projection 17: circumferential projection 20: gap 20a, 20c: score 20b: bridge 20d, 20f: slit 20e: bridge 20g: strong bridge 23: engagement projection 25: hinge Connection part 25a, 25b, 25c: Band part 26, 27: Axial direction weakening line 27a, 27b: Notch part 28: Circumferential direction weakening line 31: Top plate part 33: Skirt part 35: Circumferential protrusion 40: Opening collar 41 : Flat protrusion 50: Rib 60: Container mouth X: Tear start area Y: Tear advance amount area Z: Fixed area

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 tubular side wall, and provided on the cap body so as to be freely opened and closed via a hinge connecting portion A hinge cap comprising an upper lid,
The cylindrical side wall of the cap body, at least in part, comprises an inner wall part, an outer wall part located around the inner wall part, a lower end of the inner wall part, and a connecting part that connects the outer wall part,
In the vicinity of the hinge connecting portion of the outer wall portion, an axial direction weakening line made of a tearable score extending in the axial direction from the upper end to the lower end of the outer wall portion is formed, and notches are provided above and below the score. And
In the connecting portion, a circumferential weakening line extending in the circumferential direction from the axial weakening line toward the hinge connecting portion is formed,
The circumferential weakening line is provided with a tear start region for starting tearing, and a tear progress region following the tear start region, and a region combining the tear start region and the tear progress region is 180 to Formed over a range of 315 degrees, the remaining area forms a fixed area,
The tear start area of the circumferential weakening line is a score or a slit extending in the circumferential direction over at least 30 degrees toward the hinge connection part starting from the axial weakening line,
The tear strength of the tear start region is formed to be smaller than the tear strength of the tear progress region, and the connecting portion in the fixing region is formed thicker than the connecting portion in the tear progress region. A hinge cap with a sorting mechanism. The hinge cap according to claim 1, wherein the tear progress region includes a combination of a score and a bridge portion or a slit and a bridge portion. The hinge cap according to claim 1 or 2, wherein at least one rib extending along an axially weakening line is provided on an outer peripheral surface of the outer wall portion.

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