JP5918991B2 - Integrated plastic container lid - Google Patents

Description

  The present invention relates to a synthetic resin container lid including a closed wall in which a removal region surrounded by a breakable thin line is defined.

  As a synthetic resin container lid for liquid seasonings such as soy sauce, edible oil and dressing, the following Patent Document 1 includes an inner plug member and an outer lid member formed separately from the inner plug member. A synthetic resin container lid is disclosed. The inner plug member has a circular blocking wall in which a removal region surrounded by a breakable thin line is defined, a cylindrical mounting wall attached to the blocking wall, and a cylinder extending upward from the upper surface of the removal region in the blocking wall It has a shaped protruding wall. Circumferentially locked means and axial locked means are disposed on the outer peripheral surface of the protruding wall. The outer lid member includes a cylindrical outer wall, a circular top wall, and a cylindrical skirt wall. The outer wall is fitted on the mounting wall of the inner plug member, the skirt wall hanging from the periphery of the top wall is pivotally connected to the outer wall via the hinge means, and the upper wall and the skirt wall are the blocking wall of the inner plug member It is possible to swivel between a closed position that covers and an open position that exposes the blocking wall of the inner plug member. A cylindrical extending wall is attached to the inner surface of the top wall, and circumferential locking means and axial locking means are disposed on the outer peripheral surface of the extending wall. Counterclockwise when the outer wall is seen from above with the top and skirt walls positioned in the closed position in a state where the mounting wall of the inner plug member is locked to the mouth and neck of the container and the mouth and neck are sealed , The projecting wall and the removal area are also rotated by the cooperation of the circumferential locking means and the circumferentially locked means, whereby the breakable thin line is broken and the removal area is closed. Separated from. Thereafter, when the top wall and the skirt wall are swung from the closed position to the open position, the projecting wall and the removal region are also swung with the cooperation of the axial locking means and the axial locked means.

JP 2011-173632 A

  The container lid as described above disclosed in Patent Document 1 breaks the breakable thin line by appropriately operating the top wall and the skirt wall to separate the removal region from the blocking wall, and further includes the removal region and The protruding wall arranged on this can be separated from the blocking wall. Therefore, a so-called usability is improved as compared with a container lid in which a tension ring is attached to the upper surface of the removal region and a finger is put on the tension ring to pull the breakable thin line. However, the container lid as described above disclosed in Patent Document 1 is still not fully satisfactory, and has the following problems to be solved. First, it is necessary to mold the inner plug member and the outer lid member separately and then combine them as required, and the manufacture is not always easy and the manufacturing cost is relatively high. Second, even after the breakable thin line is broken, the relative rotation between the inner plug member and the outer lid member is not prevented, and the outer lid member is accidentally covered with the inner plug member during use. May rotate, and an unexpected situation may occur due to this rotation.

The present invention has been made in view of the above-mentioned facts, and a main technical problem thereof is a container lid having a closed wall in which a removal region surrounded by a breakable thin wall line is defined. It is superior (that is, it is not necessary to break the breakable thin line by putting a finger on the pulling ring attached to the upper surface of the removal region and pulling it like the container lid disclosed in Patent Document 1 above. The present invention provides a new and improved integrally molded synthetic resin container lid which can be integrally molded in spite of the above.

Another technical problem of the present invention is that, in addition to the achievement of the main technical problem, the relative rotation of the outer wall, the top wall and the skirt wall with respect to the closing wall and the mounting wall even after breaking the breakable thin line. There is sufficiently reliably prevented, it is to provide a new and improved integral formed form plastic container closure.

  As a result of earnest research, the inventors have made a plurality of connecting pieces that allow the outer wall to rotate relative to the mounting wall relative to the mounting wall in a circumferential direction over a required angle. And thus found that the main technical problem can be achieved.

  In addition, at least one constrained protrusion is formed on the inner peripheral surface of the outer wall, and the constraining piece is positioned on the outer peripheral surface of the mounting wall at a predetermined interval in the circumferential direction with respect to the constraining piece. When the top wall and the skirt wall are rotated in one direction in the circumferential direction, the constrained protrusion elastically climbs over the constraining piece and enters between the constraining piece and the constraining protrusion. It has been found that the above-mentioned other technical problem can be achieved by configuring the outer wall to be restricted from rotating on both sides in the circumferential direction.

That is, according to the present invention, the integrally formed form synthetic resin container closure to achieve principal object, circular closure wall removed region surrounded by breakable thin line is defined, the lower surface of the closing wall A cylindrical mounting wall depending from the peripheral edge, a cylindrical projecting wall extending upward from the upper surface of the removal region in the closed wall, a cylindrical outer wall positioned outside the mounting wall at a radial interval, A circular top wall and a cylindrical skirt wall depending from the periphery of the top wall,
The skirt wall is pivotally connected to the outer wall via hinge means, and the top wall and the skirt wall pivot between a closed position that covers the closed wall and an open position that exposes the closed wall. Is free
The mounting wall and the outer wall are connected by a plurality of connecting pieces arranged at intervals in the circumferential direction, and each of the connecting pieces is connected to the mounting wall on the one side in the circumferential direction. Allowing relative rotation over the required angle,
At least one circumferentially locked means and axially locked means are arranged on the outer peripheral surface or inner peripheral surface of the protruding wall, and a cylindrical extension wall is attached to the inner surface of the top wall. And at least one circumferential locking means that cooperates with the circumferentially locked means and an axial line that cooperates with the axially locked means on the inner or outer peripheral surface of the extension wall. Direction locking means is arranged,
In a state where the mounting wall is locked to the outer peripheral surface of the mouth / neck portion of the container and the mouth / neck portion is sealed, the outer wall is placed on one side in the circumferential direction together with the top surface wall and the skirt wall which are closed in the closed position. , The projecting wall and the removal region are also rotated to one side in the circumferential direction by the cooperation of the circumferential locking means and the circumferentially locked means, and the breakable thin line is broken. When the removal area is separated from the blocking wall, and then the top wall and the skirt wall are swung to the open position, the axial locking means and the axial locked means cooperate. The removal area is also swiveled along with it,
An integrally molded synthetic resin container lid is provided.

In integrally formed form synthetic resin container closure to achieve the above other technical problem, at least one of the catch protrusion is formed on the inner peripheral surface of the outer side wall, restraining pieces on the outer peripheral surface of said mounting wall And a restraining protrusion positioned at a predetermined interval in one circumferential direction with respect to the restraining piece, and when the top wall and the skirt wall are rotated in one circumferential direction, The protrusion elastically climbs over the restraining piece and enters between the restraining piece and the restraining protrusion, thereby restraining the rotation of the outer wall in the circumferential direction with respect to the mounting wall.

  Conveniently, the one circumferential side is counterclockwise when viewed from above. An opening is formed in the outer wall, the skirt wall and the outer wall are rotated to one side in the circumferential direction, and the projecting wall is cooperated by the circumferential locking means and the circumferentially locked means. And the removal region is also associated with the opening on the outer peripheral surface of the mounting wall before rotating to the one side in the circumferential direction and breaking the breakable thin line to separate the removal region from the blocking wall. It is preferable that a first display that can be visually recognized through the opening is disposed at the site. More preferably, the skirt wall and the outer wall are rotated to one side in the circumferential direction, and the projecting wall and the removal region are accompanied by the cooperation of the circumferential locking means and the circumferentially locked means. After rotating to one side in the circumferential direction to break the breakable thin line and separating the removal region from the blocking wall, a portion corresponding to the opening on the outer peripheral surface of the mounting wall is visually recognized through the opening. A second display that can be arranged is provided. A part of the first display and the second display can be shared.

  Container lids constructed in accordance with the present invention can be integrally molded and can be manufactured relatively easily and at a relatively low cost. In addition, in the form in which the constrained protrusion, the constraining piece, and the constraining protrusion are disposed, the constrained protrusion is constrained between the constraining protrusion and the constraining piece after the breakable thin line is broken. Thus, the relative rotation of the outer wall, the top wall and the skirt wall with respect to the blocking wall and the mounting wall is sufficiently prevented.

The top view which shows suitable embodiment of the container lid comprised according to this invention in the state which put the top | upper surface wall and the skirt wall in the open position. Sectional drawing which shows the container lid of FIG. 1 in the state which put the top | upper surface wall and the skirt wall in the open position. Sectional drawing which shows the container lid of FIG. 1 in the state which put the top | upper surface wall and the skirt wall in the closed position. The slope view which shows the container lid of FIG. 1 in the state which put the top | upper surface wall and the skirt wall in the closed position. FIG. 5 is a perspective view illustrating the container lid of FIG. 1 in a state in which the outer wall, the top wall, and the skirt wall are rotated 20 degrees in the clockwise direction when viewed from above from the state illustrated in FIG. 4. The schematic diagram which shows the relative relationship of the various component in the state which made the container lid of FIG. 1 let the top wall and the skirt wall be a closed position. The schematic diagram which shows the container lid of FIG. 1 in the state which rotated the outer side wall, the top | upper surface wall, and the skirt wall 10 degree | times counterclockwise in FIG. 6 from the state shown in FIG. The schematic diagram which shows the container lid of FIG. 1 in the state which rotated the outer side wall, the top | upper surface wall, and the skirt wall 20 degree | times counterclockwise in FIG. 6 from the state shown in FIG. The schematic diagram which shows the container lid of FIG. 1 in the state which rotated the outer side wall, the top | upper surface wall, and the skirt wall 38 degrees counterclockwise in FIG. 6 from the state shown in FIG. The schematic diagram which shows the container lid of FIG. 1 in the state which rotated the outer side wall, the top | upper surface wall, and the skirt wall 40 degree | times counterclockwise in FIG. 6 from the state shown in FIG. Sectional drawing which shows other embodiment of the container lid comprised according to this invention in the state which put the top | upper surface wall and the skirt wall in the closed position.

  The invention will be described in more detail below with reference to the accompanying drawings, in which embodiments of the invention are shown.

  Referring to FIGS. 1 and 2, the container lid, generally designated by the numeral 2, constructed in accordance with the present invention is entirely formed of a suitable synthetic resin such as polyethylene or polypropylene. The illustrated container lid 2 has a circular closing wall 4 extending horizontally as a whole. It is important that a removal region is formed at the center of the blocking wall 4. In the illustrated embodiment, a circular removal area 8 is defined by a circular breakable thin wall 6 at the center of the blocking wall 4. On the lower surface of the blocking wall 4, a cylindrical mounting wall 10 that hangs down from the outermost peripheral edge and an annular shape that extends radially inward from the mounting wall 10 and radially outward from the breakable thin wall 6. A seal wall 12 is provided. An annular locking ridge 18 that protrudes inward in the radial direction is formed at the lower portion of the inner peripheral surface of the mounting wall 10. The seal wall 12 extends downwardly and radially outwardly, then extends on an arc, and further extends radially downwardly and radially outwardly to an outer peripheral surface 14 and downwardly radially. And an inner peripheral surface 16 extending downwardly and then extending substantially vertically downward. On the upper surface of the blocking wall 4, an annular locking wall 20 extending upward from the outermost peripheral edge portion thereof and a dispensing guide wall 22 extending upward in the radial direction from the locking wall 20 are formed. ing. An annular locking ridge 26 protruding outward in the radial direction is formed at the upper end of the outer peripheral surface of the locking wall 20. The extraction guide wall 22 has a substantially cylindrical shape extending vertically upward from the upper surface of the blocking wall 4, and its upper end is curved outward in the radial direction. As clearly understood by referring to FIG. 2, the protruding length of the right side portion of the dispensing guide wall 22 in FIG. 2 is set shorter than that of the left side portion.

  It is important that a cylindrical protruding wall 24 is disposed on the upper surface of the blocking wall 4. The locking wall 20 and the dispensing guide wall 22 are located radially outside the breakable thin line 6, but the protruding wall 24 is located radially inside the breakable thin line 6. . In other words, the protruding wall 24 extends upward from the upper surface of the removal region 8. A circumferentially locked means 28 and an axially locked means 30 are disposed on the outer peripheral surface of the protruding wall 24. In the illustrated embodiment, the circumferentially engaged means 28 includes a plurality of, six in the illustrated case, 32 ratchet claws 32 disposed at equal intervals in the circumferential direction below the outer peripheral surface of the protruding wall 24. It is composed of Each of the ratchet pawls 32 has a sharp and sharp locking surface located on the downstream side in the clockwise direction in FIG. 1 and a gentle inclined surface located on the upstream side in the clockwise direction. The axially locked means 30 is composed of an annular ridge disposed at the upper end of the outer peripheral surface of the protruding wall 24. The circumferentially locked means 28 cooperates with a circumferential locking means described later, and the axial locked means 30 cooperates with an axial locking means described later.

  A cylindrical outer wall 34 is formed radially outward from the mounting wall 10. The outer wall 34 has a relatively thin lower portion 36 and a relatively thin upper portion 38. Between the upper end portion of the inner peripheral surface of the lower portion 36 of the outer wall 34 and the lower end surface of the mounting wall 10, a plurality of, in the illustrated case, eight connection pieces 40 are provided at equal angular intervals in the circumferential direction. It is arranged. Each of the connecting pieces 40 has a first portion 42 projecting radially inward from the inner peripheral surface of the lower portion 36 of the outer wall 34, and a second portion extending in the circumferential direction from one end connected to the upper surface of the first portion 42. The second portion 44 and the third portion 46 extend radially inward from the other end of the second portion 44 to the other end connected to the lower end surface of the mounting wall 10. The cross-sectional area of the connecting piece 40, in particular its second part 44, is relatively small and is elastically deformed by a relatively small force, as will be further described later, so that the outer wall 34 is circumferential with respect to the mounting wall 10. It is allowed to rotate relatively over a required angle in one side, that is, in the counterclockwise direction in FIG.

The description will be continued with reference to FIGS. 1 and 2. On the inner peripheral surface of the upper portion 38 of the outer wall 34, a plurality of constrained protrusions 48 are provided at intervals in the circumferential direction, four in the illustrated case. Is arranged. Each of the restrained protrusions 48 is projected radially inward from the inner peripheral surface of the upper portion 38 of the outer wall 34. If desired, the tip of each of the constrained protrusions 48 can have a small cross-sectional area and can be easily broken when the outer wall 34 is rotated relative to the mounting wall 10 by means of a break. It can also be connected to the outer peripheral surface. On the other hand, the outer peripheral surface of the mounting wall 10, are caused to correspond to the target captive projections 48, a plurality at equal intervals in the circumferential direction, are disposed four, restraining piece 50 of the case illustrated In addition, a restraining protrusion 52 is disposed at a predetermined interval in one circumferential direction, that is, counterclockwise in FIG. The constraining piece 50 is composed of an elongated piece extending in a counterclockwise direction in FIG. 1 from the outer peripheral surface of the mounting wall 10 outward in the radial direction, and as further described later, in FIG. When a force is applied from the counterclockwise direction, it is easily displaced inward in the radial direction, but resists the force applied from the clockwise direction in FIG. Each of the restraining protrusions 52 protrudes radially outward from the outer peripheral surface of the mounting wall 10, and has a sharp surface that stands upright in the clockwise direction in FIG. 1. If desired, the tips of each of the restraining protrusions 52 may be formed within the outer wall 34 by breaks that have a small cross-sectional area and are easily broken when the outer wall 34 is rotated relative to the mounting wall 10. It can also be connected to the circumference.

  3 and 4 together with FIGS. 1 and 2, the container lid 2 further has a circular top wall 54 and a cylindrical skirt wall 56 depending from the periphery of the top wall 54. The tip of the skirt wall 56 (the lower end in the state shown in FIG. 3) is pivotally attached to the upper end of the outer wall 34 via hinge means 58 that may be a well-known form at a specific portion in the circumferential direction. The top wall 54 and the skirt wall 56 are located between an open position tilted somewhat counterclockwise in FIG. 2 and a closed position shown in FIGS. 3 and 4 than the molding position shown in FIGS. It can turn freely. When the top wall 54 and the skirt wall 56 are brought into the open position, the closed wall 4 is exposed, and when the top wall 54 and the skirt wall 56 are brought into the closed position, the closed wall 4 is covered. The skirt wall 56 is provided with an arc-shaped protruding piece 60 that protrudes from the lower end of the outer peripheral surface of the skirt wall 56 on the diametrically opposite side with respect to the hinge means 58. An annular locking groove 62 is disposed at the lower end portion of the inner peripheral surface of the skirt wall 56. A cylindrical seal wall 64 is formed on the inner surface of the top wall 54 so as to hang from a position corresponding to the extraction guide wall 22.

  It is important that a cylindrical extending wall 66 is disposed on the inner surface of the top wall 54 corresponding to the protruding wall 24. In the illustrated embodiment, the extension wall 66 has a relatively thick base 68 and a relatively thin extension end 70. A circumferential locking means 72 and an axial locking means 74 are disposed on the inner peripheral surface of the extending wall 66. In the illustrated embodiment, there are a plurality of circumferential locking means 72 arranged in the circumferential direction on the inner peripheral surface of the extending end portion 70 of the extending wall 66, and six in the illustrated case. , And ratchet pawl 76. Each of the ratchet pawls 76 has a sharp and sharp engaging surface located on the downstream side in the clockwise direction in FIG. 1 and a gentle inclined surface located on the upstream side in the clockwise direction. The axial locking means 74 is composed of an annular ridge disposed on the inner peripheral surface extension end (lower end in FIG. 3) of the base portion of the extension wall 66. As will be further described below, the circumferential locking means 72 cooperates with the circumferentially locked means 28 and the axial locking means 74 cooperates with the axially locked means 30.

  When the top wall 54 and the skirt wall 56 are swung from the molding position illustrated in FIGS. 1 and 2 to the closed position illustrated in FIG. 3, a locking groove formed in the lower end portion of the inner peripheral surface of the skirt wall 56. 62 is engaged with an engaging protrusion 26 formed at the upper end of the outer peripheral surface of the engaging wall 20, whereby the top wall 54 and the skirt wall 56 are releasably held in the closed position. The seal wall 64 depending from the inner surface of the top wall 54 enters the extraction guide wall 22 and is brought into close contact with the inner peripheral surface thereof. As described above, since the protruding length of the right side portion (that is, the portion on the hinge means 58 side) of the dispensing guide wall 22 is set short in FIG. 2, the seal wall 64 enters the dispensing guide wall 22 sufficiently smoothly. can do. The axial locking means 74 formed on the inner peripheral surface of the extension wall 66 elastically climbs over the axial locked means 30 formed on the outer peripheral surface of the projecting wall 24 and locks it below. It is done. The ratchet pawl 76 formed on the inner peripheral surface of the extending wall 66 is spaced apart from the ratchet pawl 32 formed on the outer peripheral surface of the protruding wall 24 in the circumferential direction, as clearly shown in FIG. To position.

  As clearly shown in FIG. 4, an opening 78 is formed at a predetermined portion of the outer wall 34. The portion of the outer peripheral surface of the mounting wall 10 that is exposed through the opening 78 in the state illustrated in FIG. 4, and is therefore visible through the opening 78, is marked with “unopened” characters constituting the first display. . On the outer peripheral surface of the mounting wall 10, the portion exposed through the opening 78 when the outer wall 34 is rotated about 20 degrees with respect to the mounting wall 10 as will be described later, and therefore visible through the opening 78 is The letters “opened” constituting the second display are given. “Open” in the first display and “open” in the second display are used in common for the first display and the second display.

  The use mode of the container lid 2 as described above will be described as follows. The container lid 2 is applied to a container having a mouth-and-neck portion in a form as illustrated by a two-dot chain line in FIG. A container that can be formed from a suitable synthetic resin or glass has a mouth-and-neck portion 80 that is generally cylindrical. A locking protrusion 82 is formed at the upper end of the outer peripheral surface of the mouth and neck portion 80. The container lid 2 is attached to the mouth-and-neck part 80 after the contents, for example, a liquid seasoning, are filled in the container, and the mouth-and-neck part 80 is sealed. When the container lid 2 is attached to the mouth / neck portion 80, the container lid 2 is fitted to the mouth / neck portion 80 with the top wall 54 and the skirt wall 56 in the closed position shown in FIGS. Then, it is pressed downward and lowered to the position shown in FIG. The locking ridge 18 of the mounting wall 10 elastically climbs over the locking ridge 82 of the mouth-and-neck portion 80 and is locked therebelow, and the seal wall 12 is advanced into the mouth-and-neck portion 80 to enter the mouth-and-neck. It is brought into close contact with the inner peripheral surface of the portion 80. In the state where the container lid 2 is thus attached to the mouth / neck portion 80, the first display “unopened” is visually observed through the opening 78 in which the outer wall 34 is formed, as shown in FIG. 4.

When the contents contained in the container are consumed, first, for example, the outer wall 34, the top wall 54, and the skirt wall 56 are turned in FIG. 6 and FIG. In the clockwise direction, it is rotated over an angle range of about 10 degrees from the state shown in FIG. 6 to the state shown in FIG. In this way, when the constrained protrusion 48 and / or the constraining protrusion 52 are provided with breakage portions, these breakage portions are broken and formed on the outer peripheral surface of the protruding wall 24 as clearly shown in FIG. The latching surface of the ratchet pawl 76 formed on the inner peripheral surface of the extending wall 66 is brought into contact with the latching surface of the ratchet pawl 32. When the outer side wall 34, the top wall 54 and the skirt wall 56 are further rotated from the state shown in FIG. 6 to the position shown in FIG. 8 which is an angle position of about 20 degrees, the ratchet pawl 32 and the ratchet pawl 76 cooperate. The protruding wall 24 is also rotated in association with this, whereby the breakable thin line 6 disposed on the blocking wall 4 is broken, and the removal region 8 and the protruding wall 24 are detached from the blocking wall 4. When the outer wall 34, the top wall 54 and the skirt wall 56 are rotated to the position shown in FIG. 8, the second display “opened” is made through the opening 78 formed in the outer wall 34, as shown in FIG. Becomes visible, and it is clearly shown that the breakable thin line 6 is broken. Next, when the outer wall 34, the top wall 54, and the skirt wall 56 are further rotated from the state shown in FIG. 6 to the position shown in FIG. The restrained protrusions 48 that are disposed elastically ride over the restraining pieces 50 that are disposed on the outer peripheral surface of the mounting wall 10 and enter between the restraining pieces 50 and the restraining protrusions 52. As described above, the restraint piece 50 is easily displaced inward in the radial direction when a force is applied from the counterclockwise direction in FIGS. 1, 8, and 9, but it is applied from the clockwise direction in FIGS. Resist the force being applied. Accordingly, once the restrained protrusion 48 has elastically climbed over the restraining piece 50, the outer wall 34, the top wall 54 and the skirt wall 56 are prevented from returning clockwise in FIG. When the outer wall 34, the top wall 54, and the skirt wall 56 are further rotated from the state illustrated in FIG. 6 to the position illustrated in FIG. 10, which is an angular position of approximately 40 degrees, they are disposed on the inner peripheral surface of the outer wall 34. The constrained projection 48 is prevented from coming into contact with the constraining projection 52 disposed on the outer peripheral surface of the mounting wall 10 and further rotating counterclockwise (therefore, the outer wall 34 with respect to the mounting wall 10, The counterclockwise and clockwise rotation of the top wall 54 and the skirt wall 56 is substantially prevented), and the consumer feels that the outer wall 34, the top wall 54 and the skirt wall 56 have been rotated to the required angular position. Can be recognized. As clearly understood by comparing FIGS. 6 to 10, when the outer wall 34, the top wall 54 and the skirt wall 56 are rotated counterclockwise with respect to the mounting wall 10, the connecting piece 40 It is deformed to displace accordingly.

  Thereafter, the consumer puts his / her finger on the protruding piece 60 attached to the skirt wall 56, for example, and opens the top wall 54 and the skirt wall 56 to the open position, that is, the molding position shown in FIGS. 2 is turned to an open position tilted somewhat counterclockwise. Thus, the axial locking means 74 formed on the inner peripheral surface of the extending wall 66 is locked to the axial locked means 30 formed on the outer peripheral surface of the protruding wall 24. The removal area 8 separated from the blocking wall 4 and the protruding wall 24 are also swung together, and a discharge port corresponding to the removed removal area 8 is generated in the blocking wall 4. Thereafter, the contents can be poured out through the dispensing guide wall 22 by tilting the container.

  Thus, in the above-described embodiment shown in FIGS. 1 to 10, the circumferentially locked means 28 and the axially locked means 30 are formed on the outer peripheral surface of the protruding wall 24 disposed on the closing wall 4. In addition, the circumferential direction locking means 72 and the axial direction locking means 74 are formed on the inner peripheral surface of the extending wall 66 disposed on the top wall 54. If desired, the inner diameter of the protruding wall can be extended to the extending wall. The circumferentially locked means and the axially locked means are formed on the inner peripheral surface of the protruding wall, and the circumferentially locked means and the axially engaged member are formed on the outer peripheral surface of the extending wall. Stop means can also be formed.

  FIG. 11 illustrates a modified embodiment of a container lid constructed in accordance with the present invention. In the container lid 102 shown in FIG. 11, the protruding wall 124 disposed on the upper surface of the closing wall 104 has a relatively large diameter lower portion 124a and a relatively small diameter upper portion 124b, and the lower portion 124a and the upper portion 124b. There is an annular wall 124c extending substantially horizontally. The circumferentially locked means 128 is disposed on the outer peripheral surface of the lower part 124a, and the axially locked means 130 is disposed on the outer peripheral surface of the upper part 124b. On the other hand, a relatively large-diameter outer extending wall 166a and a relatively small-diameter inner extending wall 166b are disposed on the inner surface of the top wall 154. And the circumferential direction locking means 172 is formed in the inner peripheral surface of the outer side extension wall 166a, and the axial direction locking means 174 is formed in the inner peripheral surface of the inner side extension wall 166b. The configuration other than the above-described configuration in the embodiment illustrated in FIG. 11 is substantially the same as the above-described embodiment illustrated in FIGS.

2: Container lid 4: Blocking wall 6: Breakable thin line 8: Removal area 10: Mounting wall 24: Protruding wall 28: Circumferentially locked means 30: Axial locked means 34: Outer wall 40: Connection piece 48: Restrained protrusion 50: Restraining piece 52: Restraining protrusion 54: Top wall 56: Skirt wall 66: Extension wall 72: Circumferential locking means 74: Axial locking means 78: Opening 80: Mouth neck of container 102: Container lid 104: Blocking wall 124: Projection wall 124a: Lower part of the projection wall 124b: Upper part of the projection wall 128: Circumferentially locked means 130: Axial locked means 154: Top wall 166a: Outer extending wall 166b: inner extension wall 172: circumferential direction locking means 174: axial direction locking means

Claims (5)

A circular closed wall in which a removal region surrounded by a breakable thin line is defined, a cylindrical mounting wall depending from a lower peripheral edge of the closed wall, and a cylinder extending upward from the upper surface of the removal region in the closed wall A projecting wall, a cylindrical outer wall located radially outside the mounting wall, a circular top wall, and a cylindrical skirt wall depending from the periphery of the top wall;
The skirt wall is pivotally connected to the outer wall via hinge means, and the top wall and the skirt wall pivot between a closed position that covers the closed wall and an open position that exposes the closed wall. Is free
The mounting wall and the outer wall are connected by a plurality of connecting pieces arranged at intervals in the circumferential direction, and each of the connecting pieces is connected to the mounting wall on the one side in the circumferential direction. Allowing relative rotation over the required angle,
At least one circumferentially locked means and axially locked means are arranged on the outer peripheral surface or inner peripheral surface of the protruding wall, and a cylindrical extension wall is attached to the inner surface of the top wall. And at least one circumferential locking means that cooperates with the circumferentially locked means and an axial line that cooperates with the axially locked means on the inner or outer peripheral surface of the extension wall. Direction locking means is arranged,
In a state where the mounting wall is locked to the outer peripheral surface of the mouth / neck portion of the container and the mouth / neck portion is sealed, the outer wall is placed on one side in the circumferential direction together with the top surface wall and the skirt wall which are closed in the closed position. , The projecting wall and the removal region are also rotated to one side in the circumferential direction by the cooperation of the circumferential locking means and the circumferentially locked means, and the breakable thin line is broken. When the removal area is separated from the blocking wall, and then the top wall and the skirt wall are swung to the open position, the axial locking means and the axial locked means cooperate. The removal area is also swiveled along with it,
An integrally molded synthetic resin container lid. At least one constrained protrusion is formed on the inner peripheral surface of the outer wall, and the constraining piece is positioned on the outer peripheral surface of the mounting wall at a predetermined interval in the circumferential direction with respect to the constraining piece. When the top wall and the skirt wall are rotated in one circumferential direction, the constrained protrusion elastically climbs over the constraining piece and the constraining piece and the constraining protrusion passes between, whereby the rotation in the circumferential direction on both sides of the outer side wall with said mounting wall is restrained, integrally formed form plastic container closure according to claim 1, wherein. Circumferential direction on one side is counterclockwise when viewed from above, according to claim 1 or 2 integrally formed form plastic container closure according. An opening is formed in the outer wall, the skirt wall and the outer wall are rotated to one side in the circumferential direction, and the projecting wall is cooperated by the circumferential locking means and the circumferentially locked means. And the removal region is also associated with the opening on the outer peripheral surface of the mounting wall before rotating to the one side in the circumferential direction and breaking the breakable thin line to separate the removal region from the blocking wall. first display is arranged, integrally formed form plastic container closure according to any one of claims 1 to 3 which can be viewed through the opening in the site. The skirt wall and the outer wall are rotated to one side in the circumferential direction, and the projecting wall and the removal region are also accompanied by the cooperation in the circumferential direction locking means and the circumferential direction locked means. And after the breakable thin line is broken to separate the removal region from the blocking wall, a portion corresponding to the opening on the outer peripheral surface of the mounting wall can be visually recognized through the opening. second display is arranged, integrally formed form a synthetic resin container closure according to claim 4, wherein.

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