JP2005104519A - Composite-container lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite-container lid which easily holds a lid body by a fitting tool in a non-rotatable manner without angular positioning, and is manufactured without increasing the amount of required materials or increasing the manufacturing cost. <P>SOLUTION: In the composite-container lid, an annular recessed part (22) located inward of an inner hanging wall (12) in the radial direction is formed in a lower surface of a closing wall (8) of a lid body (4). A plurality of locking projections (24) are disposed in the annular recessed part with intervals in the circumferential direction. Each locking projection has a gently front side (26) on the forward side and a sheer rear side (28) on the backward side when viewed in the relatively rotating direction of the lid body when a female screw (64) is screwed to a male screw (32). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is a composite container lid having a lid body and an outer lid, and more specifically, formed on the outer lid on a male thread formed on the lid body prior to being applied to the mouth neck of the container. The present invention relates to a composite container lid in which a female thread is screwed and an outer lid is attached to a lid body.

  As container lids applied to containers for liquid seasonings and the like, the following Patent Documents 1 to 3 propose composite container lids having a lid body and an outer lid. The lid body has a closed wall extending substantially horizontally, a cylindrical projecting wall extending upward from the upper surface of the closed wall, a cylindrical inner hanging wall hanging from the lower surface of the closed wall, and a cylindrical shape hanging from the lower surface of the closed wall It includes a breakable line that is formed on the closed wall radially inward of the outer hanging wall, the protruding wall, and the inner hanging wall, and that defines a release region, and a tension piece attached to the upper surface of the closure wall in the release region. A male thread is formed on the outer peripheral surface of the protruding wall. The outer lid includes a top wall and a skirt wall depending from the top wall, and a female thread is formed on the skirt wall.

In the composite container lid as described above, it is necessary to attach the outer lid to the lid body prior to applying the composite container lid to the mouth and neck of the container. The outer lid is attached to the lid body by forming the outer lid on the male thread formed on the lid body by fitting the outer lid to the lid body and rotating the outer lid in the required direction with respect to the lid body. Screw the female thread. At this time, it is necessary to hold the lid body, which is covered at least most, usually the whole, by the outer lid so as not to rotate accompanying the rotation of the outer lid. Therefore, in the composite container lid disclosed in Patent Documents 1 to 3, a hanging wall is attached to the lower surface of the closed wall, and a plurality of ridges are formed on the inner circumferential surface at intervals in the circumferential direction. Alternatively, a plurality of projecting pieces that hang downward from the lower surface of the closing wall at intervals in the circumferential direction are formed, and a mounting jig having a recess or a notch for receiving the projecting ridge or the projecting piece is prepared, and the lid main body is prepared. When the outer lid is mounted, a protrusion or protruding piece of the lid main body is engaged with the recess or notch of the mounting jig to hold the lid main body non-rotatably with the mounting jig.
JP-A-11-255251 JP 2000-85818 A JP 2003-170951 A

  Thus, in the conventional composite container lid as described above, (1) In order to hold the lid body in a non-rotatable manner in the mounting jig, the lid body is formed in a recess or notch formed in the mounting jig. It is necessary to align the ridges or protruding pieces angularly and fit the lid main body to the mounting jig on the mounting jig, but the ridges or protruding pieces are surrounded by the inner hanging wall of the lid main body. The above positioning is not always easy because it is formed at a part where the lid is located. (2) It is necessary to additionally form a hanging wall or a projecting piece having a ridge on the lid body. There is a problem that the amount of material for producing the main body increases and the manufacturing cost increases.

  Accordingly, the main technical problem of the present invention is that the lid body can be held in a non-rotatable manner in the mounting jig sufficiently easily without requiring an angular alignment, and the amount of necessary material is also increased. There is a need to provide a new and improved composite container lid that can be manufactured without increasing manufacturing costs.

  Another technical problem of the present invention is to provide a new and improved mounting jig that can be suitably used to hold a composite container lid constructed in accordance with the present invention in a non-rotatable manner.

  According to the present invention, an annular recess is formed on the lower surface of the closure wall of the lid body on the radially inner side with respect to the inner hanging wall, and the plurality of locking projections have a gentle front surface and a standing rear surface in the annular recess. Are formed at intervals in the circumferential direction, thereby achieving the main technical problem.

  Furthermore, according to the present invention, a plurality of locked protrusions having a front surface and a gentle rear surface are formed on the front end surface of the cylindrical support base in the mounting jig at intervals in the circumferential direction. Other technical challenges are achieved.

That is, according to the present invention, as a composite container lid that achieves the main technical problem, a lid body and an outer lid are provided,
The lid body includes a closing wall extending substantially horizontally, a cylindrical projecting wall extending upward from the upper surface of the closing wall, a cylindrical inner hanging wall depending from the lower surface of the closing wall, and a lower surface of the closing wall A cylindrical outer hanging wall that hangs down, a breakable line that is formed radially inside the projecting wall and the inner hanging wall, defines a detachable region, and is attached to the upper surface of the closing wall in the detachable region A male thread is formed on the outer peripheral surface of the protruding wall.
The outer lid includes a top wall and a skirt wall depending from the top wall, and a female thread is formed on the skirt wall, and the outer cover is fitted on the lid body to attach the female thread. In the composite container lid in which the outer lid is attached to the lid body by screwing onto the male thread,
An annular recess located radially inward of the inner hanging wall is formed on the lower surface of the closure wall of the lid body, and a plurality of engagements are provided in the annular recess at intervals in the circumferential direction. Protrusions are provided, and each of the locking projections has a front surface that is gentle on the front side when viewed in the relative rotation direction of the lid body when the female thread is screwed onto the male thread. A composite container lid is provided, characterized in that it has a rear surface that is raised to the side.

  The gradual front surface of the locking projection is inclined backward at an inclination angle α1 of 60 degrees or less, and the rear surface of the ledge is inclined downward at an inclination angle α2 of 70 degrees or more. Is preferred. Preferably, the annular recess is located radially outward from the separation region.

  Further, according to the present invention, as a mounting jig for achieving the other object, a mounting jig for use in mounting the outer lid on the lid body in the container lid, the closure of the lid body is provided. A columnar support base combined with a columnar space defined by the wall and the inner hanging wall is provided, and the locking protrusion is locked to the front end surface of the support base at a circumferential interval. A plurality of locked protrusions are formed, and each of the locked protrusions stands up toward the front as viewed in the relative rotation direction of the lid body when the female thread is screwed into the male thread. There is provided a mounting jig characterized by having a rear surface and a gentle rear surface on the rear side.

  The steep front surface of the locked protrusion is inclined backward at an inclination angle β1 of 70 degrees or more, and the gradual rear surface is inclined downward at an inclination angle β2 of 60 degrees or less. Is preferred.

  When the lid main body in the composite container lid of the present invention is held by the mounting jig, it is not necessary to align the angle in particular, and the lid main body may be simply fitted on the support base of the mounting jig. When the locking protrusion of the lid body is not angularly aligned with the locked protrusion of the support base, and therefore the rear surface of the locking protrusion is not locked to the front surface of the locked protrusion. In this case, the lid body is rotated somewhat with respect to the support base. At this time, the loose front surface of the locking projection passes through the loose rear surface of the locked projection, but the lid body rotates somewhat. When moved, the rear surface of the locking projection is locked to the front surface of the locked projection, thereby preventing the rotation of the lid body, and thus the lid body is held non-rotatably by the mounting jig. . Further, in the lid body in the composite container lid of the present invention, an annular recess is formed in the closing wall, and a plurality of locking projections are formed in the annular recess, so that the necessary material for forming the lid body Even though the amount is reduced, it is not increased.

  Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

  Referring to FIG. 1, the composite container lid, generally indicated by numeral 2, includes a lid body 4 and an outer lid 6, and is a synthetic resin known per se, such as polyethylene, isotactic polypropylene, Olefin resins such as ethylene-polypropylene copolymer, polybutene-1, ethylene-butene-1 copolymer, propylene-butene-1 polymer, ethylene-vinyl acetate copolymer, polystyrene, styrene-butadiene copolymer, Molded separately from ABS resin or polycarbonate.

The lid body 4 includes a closing wall 8 extending substantially horizontally, a cylindrical projecting wall 10 extending upward from the upper surface of the closing wall 8, a cylindrical inner hanging wall 12 hanging from the lower surface of the closing wall 8, and the closing wall 8. A cylindrical outer hanging wall 14 that hangs down from the lower surface of the tube, a projecting wall 10, and a closure wall 8 that is formed radially inward of the inner hanging wall 12 and that is closed at a detachable region 16 that defines a detaching region 16 A tension piece 20 attached to the upper surface of the wall 8 is included.

An annular recess 22 having a substantially trapezoidal cross section located radially inward of the inner hanging wall 12 is formed on the lower surface of the closing wall 8. A plurality of annular recesses 22 are circumferentially spaced in the annular recess 22. (20 in the case of illustration) The latching protrusion 24 is arrange | positioned, and each of the latching protrusion 24 is a male thread 32 as understood by comparing FIG.2 and FIG.3 with FIG. It is important to have a gradual front surface 26 on the front side and a rear surface 28 that stands on the rear side as viewed in the relative rotational direction of the lid body 4 when the female threads 64 are screwed together. In the composite container lid of the present invention, the amount of material for creating the lid body 4 because the locking projection 24 that locks the locked projection of the mounting jig, which will be described in detail later, is configured as described above. Therefore, it can be manufactured without increasing the manufacturing cost. Preferably, the gentle front surface 26 of the locking protrusion 24 is inclined downward (upward in FIG. 3) at an inclination angle α1 of 60 degrees or less, and the rear surface 28 is formed downward downward. It is inclined at an inclination angle α2 of 70 degrees or more (upward in FIG. 3). The annular recess 22 in the illustrated embodiment is located radially outside the separation region 16 and in the vicinity of the inner peripheral surface of the proximal end portion of the inner hanging wall 12. Further, an annular protrusion 30 is provided on the lower surface of the closing wall 8 between the inner hanging wall 12 and the outer hanging wall 14. The protruding wall 10 extending upward from the upper surface of the closing wall 8 is provided with a trumpet-shaped spout at its upper end, and a male thread 32 is formed on the outer peripheral surface of the protruding wall 10. The outer peripheral surface of the inner hanging wall 12 that hangs down from the lower surface of the closing wall 8 has its outer periphery gradually reduced downward at the lower end. The outer hanging wall 14 that hangs down from the radially outer side of the inner hanging wall 12 on the lower surface of the closing wall 8 is notched at intervals in the circumferential direction, and an annular ridge 34 is formed on the inner circumferential surface of the outer hanging wall 14. An annular stepped portion 36 is formed on the outer peripheral surface of the outer hanging wall 14 in the circumferential direction. The separation region 16 formed in the closing wall 8 on the radially inner side of the projecting wall 10 and the inner hanging wall 12 includes a substantially rectangular main portion 38 and an additional portion 40 extending from one corner of the main portion 38. Has been. The breakable line 18 defining the separation region 16 may be a score provided on the lower surface of the closing wall 8. The tension piece 20 attached to the upper surface of the closure wall 8 includes a vertical portion 42 extending substantially vertically from the upper surface of the closure wall 8 in the detachment region 16 and an annular ring 44 extending substantially horizontally from the vertical portion 42. . The annular ring 44 of the tension piece 20 is inclined upward on the side opposite to the side where it is attached to the vertical portion 42.

The outer lid 6 includes a top wall 46 and a cylindrical skirt wall 48 depending from the top wall 46. A cylindrical seal wall 50 is provided on the lower surface of the top wall 48. A circumferential break line 52 extending in the circumferential direction is formed in the skirt wall 48, and the skirt wall 48 has a main portion 54 above the circumferential break line 52 and a tamper evidence below the circumferential break line 52. It is partitioned into a skirt 56. The main portion 54 of the skirt wall 48 includes a cylindrical upper portion 58, an annular shoulder portion 60 that extends substantially horizontally from the lower end of the upper portion 58, and a lower portion 62 that hangs down from the outer peripheral edge of the shoulder portion 60. A female thread 64 is formed on the inner peripheral surface of the upper portion 58 of the skirt wall 48, and a convex recess 65 is provided on the outer peripheral surface of the upper portion 58. A locking piece 66 is formed on the inner peripheral surface of the tamper evidence skirt 56 of the skirt wall 48 so as to extend obliquely upward in the radial direction. The locking piece 66 is provided with a plurality of notches at intervals in the circumferential direction.

FIG. 1 also shows a mouth-and-neck portion 68 of a container to which the composite container lid 2 configured as described above is applied. The mouth / neck portion 68 is made of an appropriate synthetic resin such as polyethylene terephthalate, glass, or the like, and includes an opening 70. An annular locking jaw 71 is provided on the outer peripheral surface of the opening 70.

  FIG. 5 and FIG. 6 together with FIG. 4 illustrate a mounting jig for use when mounting the outer lid 6 to the lid body 4 in the composite container lid according to the present invention. The mounting jig generally indicated by reference numeral 72 has a columnar support base 74 combined with a columnar space defined by the closing wall 8 and the inner hanging wall 12 of the lid body 4. A plurality of (10 in the illustrated example) covers to which the locking protrusions 24 of the lid body 4 of the composite container lid 2 are locked at the peripheral edge portion of the front end surface of the support base 74 in the circumferential direction. A locking projection 76 is formed. The locked protrusion 76 of the illustrated embodiment is substantially trapezoidal in the circumferential cross section. Each of the latching protrusions 76 has a front surface 78 that stands on the front side when viewed in the relative rotation direction of the lid body 4 when the female thread 64 of the outer lid 6 is screwed into the male thread 32 of the lid body 4. And has a gradual rear surface 80 on the rear side. Preferably, the front surface 78 of the locked protrusion 76 is inclined downward at an inclination angle β1 of 70 degrees or more downward, and the gentle rear surface 80 is inclined downward at an inclination angle β2 of 60 degrees or less toward the front. It is inclined at.

When the outer lid 6 is attached to the lid body 4 of the composite container lid 2 configured as described above, a cylindrical space defined by the closing wall 8 and the inner hanging wall 12 of the lid body 4 is attached and cured. Combined with the cylindrical support 74 of the tool 72. Thereafter, when the outer lid 6 is fitted on the lid body 4 and the outer lid 6 is rotated clockwise with respect to the lid body 4 combined with the mounting jig 72 as viewed from above in FIG. Although the rotation of the outer lid 6 is clockwise, the rear surface 28 of the locking projection 24 provided on the lower surface of the closing wall 8 of the lid body 4 is sharpened by the mounting jig 72. The lid body 4 is brought into contact with the front surface 78 to prevent the lid body 4 from being rotated in association with the rotation of the outer lid 6, and is formed on the outer thread 6 on the male thread 32 formed on the lid body 4. The existing female thread 64 is screwed together. Thus, the outer lid 6 is lowered along the protruding wall 10 formed on the upper surface of the closing wall 8 in the lid body 4 and is formed on the inner peripheral surface of the tamper evidence skirt 56 of the skirt wall 48 in the outer lid 6. The locking piece 66 is locked to the annular step portion 36 of the outer hanging wall 14 in the lid body 4, and the outer lid 6 is attached to the lid body. Thus, when the outer lid is mounted on the lid body of the composite container lid of the present invention using the mounting jig 72, the lid body can be easily and easily attached to the mounting jig 72 without any angular alignment. 4 can be kept non-rotatable.

  When sealing the mouth / neck portion 68 of the container with the composite container lid 2 having the outer lid 6 attached to the lid body 4, if the composite container lid 2 is fitted on the mouth / neck portion 68 of the container and forced downward, the composite An annular protrusion 34 formed on the inner peripheral surface of the outer hanging wall of the lid body 4 in the container lid 2 elastically climbs over the upper end portion of the mouth-and-neck portion 68 and is locked to the locking jaw portion 71. The outer peripheral surface of the hanging wall 12 is brought into intimate contact with the inner peripheral surface of the mouth and neck portion 68 of the container, and the mouth and neck portion 68 of the container is sealed by the composite container lid 2.

  When opening the mouth and neck portion 68 of the container sealed with the composite container lid 2 and consuming the contents of the container, the outer cover 6 of the composite container lid 2 is grasped and the required direction, that is, from above in FIG. As a result, it is rotated counterclockwise, and the screwing of the female thread 64 of the outer lid 6 and the male thread 32 of the lid body 4 is gradually released. In this way, the skirt wall 48 of the outer lid 6 is not raised, but the tamper evidence skirt 56 of the skirt wall 48 has a locking piece 66 formed on the inner peripheral surface thereof and the outer hanging wall 14 of the lid body 4. Is prevented from rising, so that a considerable amount of stress is generated in the circumferential break line 52 formed in the skirt wall 48, and more particularly in the bridging portion. The part is broken. As a result, the tamper evidence skirt 56 is completely separated from the main portion 54 of the skirt wall 48, and the tamper evidence skirt 56 is not detached from the lid body 4 and is attached to the mouth and neck 68 of the container. It remains in the main body 4. On the other hand, the outer lid 6 excluding the tamper evidence skirt 56 is raised along the protruding wall 10 of the lid body 4 attached to the mouth / neck portion 68 of the container, and is detached from the lid body 4. As a result, the mouth and neck portion 68 to which the lid body 4 is attached is exposed. After that, when a finger is put on the annular ring 44 of the pulling piece 20 in the lid body 4 and pulled upward, the breakable line 18 formed on the closing wall 8 of the lid body 4 is broken, and the pulling piece 20 and the breakage are broken. The detachment area 16 defined in the possible line 18 is detached from the lid body 4, and a discharge opening is formed in the closing wall 8 of the lid body 4. The contents in the container can be consumed through the discharge opening.

FIG. 3 is a cross-sectional view of a preferred embodiment of the composite container lid according to the present invention, and a side view of the rest. The bottom view of the lid body in the composite container lid of FIG. Sectional drawing in line AA of FIG. Sectional drawing of the mounting jig concerning this invention used when mounting | wearing an outer cover with the cover main body of a composite container cover. The top view of the mounting jig of FIG. Sectional drawing in line BB of FIG. Sectional drawing which shows the state which hold | maintains the cover main body of the composite container cover of FIG. 1 on the mounting jig of FIG.

Explanation of symbols

2: Composite container lid 4: Lid main body 6: Outer lid 8: Closing wall 10: Protruding wall 12: Inner hanging wall 14: Outer hanging wall 16: Detachable region 18: Breakable line 20: Tensile piece 22: Annular recess 24 : Locking projection 26: Loose front surface 28: Standing rear surface 32: Male screw strip 64: Female screw strip 72: Mounting jig 74: Support base 76: Locking projection 78: Standing front surface 80: Moderate rear surface

Claims (5)

A lid body and an outer lid,
The lid body includes a closing wall extending substantially horizontally, a cylindrical projecting wall extending upward from the upper surface of the closing wall, a cylindrical inner hanging wall depending from the lower surface of the closing wall, and a lower surface of the closing wall A cylindrical outer hanging wall that hangs down, a breakable line that is formed radially inside the projecting wall and the inner hanging wall, defines a detachable region, and is attached to the upper surface of the closing wall in the detachable region A male thread is formed on the outer peripheral surface of the protruding wall.
The outer lid includes a top wall and a skirt wall depending from the top wall, and a female thread is formed on the skirt wall, and the outer cover is fitted on the lid body to attach the female thread. In the composite container lid in which the outer lid is attached to the lid body by screwing onto the male thread,
An annular recess located radially inward of the inner hanging wall is formed on the lower surface of the closure wall of the lid body, and a plurality of engagements are provided in the annular recess at intervals in the circumferential direction. Protrusions are provided, and each of the locking projections has a front surface that is gentle on the front side when viewed in the relative rotation direction of the lid body when the female thread is screwed onto the male thread. A composite container lid, characterized by having a rear surface that stands up to the side.   The gradual front surface of the locking projection is inclined downward at an inclination angle α1 of 60 degrees or less downward, and the rear surface of the standing protrusion is inclined downward at an inclination angle α2 of 70 degrees or more downward. The composite container lid according to claim 1.   The composite container lid according to claim 1, wherein the annular recess is located radially outside the separation region.   A mounting jig for use in mounting the outer lid on the lid body in the container lid according to any one of claims 1 to 3, wherein the closing wall and the inner hanging wall of the lid body are used. A cylindrical support base combined with a prescribed cylindrical space, and a plurality of locked protrusions to which the locking protrusions are locked at a circumferential interval on the front end surface of the support base; Each of the locked projections has a front surface that stands on the front side as viewed in the relative rotational direction of the lid body when the female thread is screwed onto the male thread, and is provided on the rear side. A mounting jig characterized by having a loose rear surface. The steep front surface of the locked protrusion is inclined backward at an inclination angle β1 of 70 degrees or more, and the gentle rear surface is inclined downward at an inclination angle β2 of 60 degrees or less. The mounting jig according to claim 4.

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