Cap

Abstract

To provide a cap capable of reducing a force required for breaking a weakened part by operating a pulling operation part when unsealing the cap.SOLUTION: A cap 1 has a cap body 4 attached to a container 2, and a lid 6 attached to the cap body 4 via a hinge 5. The cap body 4 has a detachment member 18 surrounded with a breakable weakened part 24. The detachment member 18 is separated from the cap body 4 by breaking the weakened part 24, and thereby a pouring hole is formed in the cap body 4. The detachment member 18 has a columnar support 27 installed upright, and a pulling operation part 28 is disposed on the columnar support 27. A root portion 27a of the columnar support 27 is located in the vicinity of the weakened part 24. The lid 6 has an engaging piece 43 which is swingable between a bent posture P1 and a detached posture. The engaging piece 43 is engaged with the pulling operation part 28 in the bent posture P1 when unsealing, and after applying a pulling force from the lid 6 to the pulling operation part 28 in an opening direction 32, the engaging piece is swung from the bent posture P1 to the detached posture and is detached from the pulling operation part 28.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap having a cap body that is attached to a container and a lid that is attached to the cap body via a hinge so as to be able to be opened and closed freely. [Background technology]

[0002] Conventionally, this type of cap has a cap body that is attached to a container and an upper lid that is connected to the cap body via a hinge, as described in Patent Document 1 below, for example.

[0003] The cap body has a partition wall that seals the mouth of the container. The partition wall has a pull-out section surrounded by a breakable thin-walled weakened section. A support post is erected in the pull-out section, and a pull ring is attached to the tip of the support post.

[0004] When opening an unopened cap, the top lid is opened and the pull ring is pulled, causing the weakened thin section to break, the extractor section to separate from the partition wall, and a pouring hole is formed in the partition wall, allowing the liquid content in the container to be poured out through the pouring hole. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2022-115673 Summary of the Invention [Problem to be solved by the invention]

[0006] However, with the above-mentioned conventional type, when opening the cap, a great deal of force may be required to pull the pull ring with the fingers to break the thin, weakened portion, which increases the strain on the fingers. An object of the present invention is to provide a cap that can reduce the force required to operate a pulling operation portion to break a weakened portion when opening the cap. [Means for solving the problem]

[0007] In order to achieve the above object, the first invention provides a container having a cap body attached to a container and a lid attached to the cap body via a hinge so as to be able to be opened and closed freely, The cap body has a release member surrounded by a breakable weakened portion; A cap in which the release member is released from the cap body by breaking the weakened portion, and a pouring hole is formed in the cap body, A support is provided on the release member, A tension operating portion is provided on the support column, The base of the support is located near the weakened area, The lid is provided with an engagement piece that can swing between a bent position and a detached position, When the cover is opened, the engaging piece engages with the pulling operation portion in a bent position, and after applying a pulling force in the opening direction from the lid to the pulling operation portion, it swings from the bent position to a detached position and detaches from the pulling operation portion.

[0008] According to this, when an unopened cap is opened, the lid is opened, and the engaging piece engages with the pulling operation portion in a bent position, and a pulling force in the opening direction is applied from the lid to the pulling operation portion, and then the engaging piece swings from the bent position to a detached position and detaches from the pulling operation portion. At this time, the tensile force is transmitted to the base of the support column via the tension operating section, generating stress at the base of the support column, which causes cracks to form in the weakened portion near the base of the support column.

[0009] The user then pulls the pulling operation portion with a finger to break the weakened portion. At this time, because a crack has already formed in the weakened portion, the force required to pull the pulling operation portion and break the weakened portion is reduced, thereby reducing the strain on the finger. By breaking the weakened portion as described above, the release member is released from the cap body, and a pouring hole is formed in the cap body.

[0010] In the cap according to the second aspect of the present invention, a crack occurs in the weakened portion near the base of the support rod due to the tensile force applied from the lid to the pulling operation portion.

[0011] In the cap according to the third aspect of the present invention, the pulling operation portion is a pull ring. This reduces the force required to pull the pull ring with a finger to break the weakened portion, thereby reducing the strain on the finger.

[0012] In the cap of the fourth invention, the lid has an insertion member that is inserted into the pull ring in an unopened state, The engagement piece is provided on the insertion member.

[0013] In the cap according to the fifth aspect of the present invention, the insertion member has a cylindrical shape, The engagement piece is provided at the tip of the insertion member.

[0014] In the cap of the sixth invention, the support and the engagement piece are disposed on the side closer to the hinge with respect to an axis passing through the center of the cap in an unopened state, The cap body is provided with a first fitting portion, A second fitting portion is provided on the lid, At least a portion of the first fitting portion and at least a portion of the second fitting portion are each disposed on a side farther from the hinge with respect to the axis; In an unopened state, the second fitting portion fits into the first fitting portion, When opening, first, the second fitting portion disengages from the first fitting portion on the side farther from the hinge relative to the axis, and then the engaging piece in a bent position begins to engage with the pulling operation portion on the side closer to the hinge relative to the axis.

[0015] According to this, when an unopened cap is opened, the second fitting portion first disengages from the first fitting portion on the side farther from the hinge relative to the axis, and then the engaging piece in a bent position begins to engage with the pulling operation portion on the side closer to the hinge relative to the axis.

[0016] In this way, the timing at which the second engaging portion disengages from the first engaging portion and the timing at which the engaging piece in the bent position begins to engage with the pulling operation portion do not coincide in time and are shifted, thereby reducing the force required to open the lid.

[0017] The cap according to the seventh aspect of the present invention is provided with a pressing member on the lid that presses the support in a direction that tilts the support when the cap is unopened.

[0018] In this case, when the cap is unopened, the support rod is pressed in the direction of falling by the pressing member, which damages the weakened portion near the base of the support rod, reducing the strength of the weakened portion near the base of the support rod. As a result, when the bent engagement piece engages with the pulling operation part and a pulling force in the opening direction is applied from the lid to the pulling operation part when the cap is opened, cracks are likely to occur in the weakened portion.

[0019] In the cap according to the eighth aspect of the present invention, the pulling operation portion is a pull ring, The cover is provided with first and second engagement pieces that can swing between a bent position and a detached position, the first engagement piece and the support rod are disposed on the side closer to the hinge with respect to an axis passing through the center of the cap in an unopened state; the second engagement piece is disposed on the side farther from the hinge with respect to an axis passing through the center of the cap in an unopened state, When the lid is opened, the first and second engagement pieces engage with the pull ring in the bent position, and after applying a pulling force in the opening direction from the lid to the pull ring, they swing from the bent position to a detached position and detach from the pull ring; The second engagement piece is capable of engaging with the pull ring at a location on the opposite side of the support rod in the radial direction.

[0020] According to this, when an unopened cap is opened, the lid is opened, and the second engagement piece engages with the pull ring in a bent position at a point opposite the support post, and after applying a tensile force in the opening direction from the lid to the pull ring, it swings from the bent position to a detached position and detaches from the pull ring.

[0021] As a result, the pull ring is pulled in the opening direction at the side opposite the support rod, causing it to tilt in the opening direction relative to the support rod. Even after the lid is opened, the pull ring does not return completely to its original position from the tilted position, and the tilt described above remains on the pull ring. Because the pull ring remains in this tilted position, it becomes easier to insert a finger into the pull ring. [Effects of the Invention]

[0022] As described above, according to the present invention, when opening a cap, it is possible to reduce the force required to operate the pulling operation portion to break the weakened portion, thereby reducing the strain on the fingers. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a cross-sectional view of a cap according to a first embodiment of the present invention, showing an unopened state. [Figure 2] FIG. 10 is a plan view of the cap of the same model, showing the lid opened 180 degrees relative to the cap body. [Figure 3] FIG. 10 is an enlarged cross-sectional view of the base of the support post of the cap. [Figure 4] FIG. 10 is an enlarged cross-sectional view of a first engagement piece of the cap and a pull ring according to the first embodiment. [Figure 5] FIG. 10 is an enlarged view of the unopened cap, showing the release member, support rod, pull ring, insertion member, first engagement piece, etc., as viewed from the hinge side. [Figure 6] 10 is a cross-sectional view of the cap in the same manner, showing the state in which the lid has been opened from an unopened state to an opening degree α. [Figure 7] 10 is a cross-sectional view of the cap in the same manner, showing the state in which the lid has been opened from an unopened state to an opening degree β. [Figure 8] FIG. 10 is an enlarged cross-sectional view of the first engagement piece and the pull ring of the cap in accordance with the first embodiment, showing the state in which the first engagement piece is engaged with the pull ring. [Figure 9] This is an enlarged view of the cap's release member, support, pull ring, insertion member, first engagement piece, etc., viewed from the hinge side, showing the state when the lid is opened and the first engagement piece swings from a bent position to a release position. [Figure 10] 10 is a cross-sectional view of the cap, showing the state after opening the lid from an unopened state. [Figure 11] This is an enlarged cross-sectional view of the base of the cap's support pillar, showing how the crack occurred. [Figure 12] 10 is a cross-sectional view of the cap shown in FIG. 10, illustrating the state in which the cap has been opened and the release member has been released from the cap body. [Figure 13] FIG. 10 is a cross-sectional view of a cap according to a second embodiment of the present invention, showing an unopened state. [Figure 14] FIG. 10 is an enlarged cross-sectional view of a portion of the cap in the unopened state. [Figure 15] FIG. 10 is a plan view of the cap of the same model, showing the lid opened 180 degrees relative to the cap body. [Figure 16] 10 is a cross-sectional view of the cap, showing the state after opening the lid from an unopened state. [Figure 17] FIG. 10 is a cross-sectional view of a cap according to a third embodiment of the present invention, showing an unopened state. [Figure 18] FIG. 10 is a plan view of the cap of the same model, showing the lid opened 180 degrees relative to the cap body. [Figure 19] 10 is a cross-sectional view of the cap, showing the process of opening the lid from an unopened state. [Figure 20] 10 is a cross-sectional view of the cap, showing the state after opening the lid from an unopened state. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings. (First embodiment)

[0025] 1 and 2, in the first embodiment, a cap 1 has a cap body 4 attached to the mouth 3 of a container 2 such as a PET bottle, and a lid 6 that can be opened and closed and is connected to the cap body 4 via a hinge 5. In FIG. 1, the cap body 4 is directly attached to the mouth 3 of the container 2, but it may also be indirectly attached to the mouth 3 via an inner plug or the like.

[0026] Here, the direction of the axis 7 passing through the center of the unopened cap 1 is defined as the vertical direction 9, the direction perpendicular to the axis 7 is defined as the radial direction 10, and the circumferential direction centered on the axis 7 is defined as the circumferential direction 11.

[0027] The cap body 4 has a partition 14 that seals the mouth 3 of the container 2, a cylindrical outer tube 15 that extends downward from the outer peripheral edge of the partition 14, a cylindrical inner tube 16 that extends downward from the partition 14 inside the outer tube 15, a cylindrical dispensing tube 17 that dispenses the liquid contents in the container 2, and a detachable member 18 that is detachably mounted inside the dispensing tube 17.

[0028] A groove 19, which is closed at the top by a partition wall 14 and is open at the bottom, is formed around the entire circumference between the outer cylinder 15 and the inner cylinder 16. The cap body 4 is attached to the container 2 by fitting the mouth 3 of the container 2 into the groove 19 from below.

[0029] An annular first fitting portion 21 is provided on the upper surface of the partition wall 14. As shown in Fig. 12, the first fitting portion 21 has a recessed portion 22 that recesses inward in the radial direction 10 over the entire periphery. As shown in FIGS. 1 and 2, the dispensing cylinder 17 protrudes upward from the partition wall 14 and is located more inward than the first fitting portion 21 in the radial direction 10.

[0030] The release member 18 is an inclined member with its lower end at an apex, is surrounded by a breakable weakened portion 24, and is connected to the partition wall 14 via the weakened portion 24. The thickness of the weakened portion 24 is set thinner than the thickness of the partition wall 14 and the thickness of the release member 18. As shown in FIG. 2, the weakened portion 24 is formed in a diamond shape in a plan view. Note that the shape of the weakened portion 24 is not limited to a diamond shape and may be, for example, a circular shape.

[0031] When the weakened portion 24 breaks, the detachment member 18 detaches from the partition wall 14 of the cap body 4, and a diamond-shaped pouring hole 25 is formed inside the pouring tube 17, as shown in FIG.

[0032] 1 and 2, a support post 27 is erected on release member 18, and a pull ring 28 (an example of a pulling operation part) is provided at the tip of support post 27. A base portion 27a at the lower end of support post 27 is adjacent to the vicinity of weakened portion 24 (for example, as shown in FIG. 3, immediately inside weakened portion 24 in radial direction 10).

[0033] The lid 6 can be rotated freely around the hinge 5 in opening and closing directions 32, 33 to open and close the dispensing tube 17, and has a circular cover plate 34, a cylindrical skirt 35 provided on the outer edge of the cover plate 34, a cylindrical inner tube 36 provided inside the skirt 35, a cylindrical sealing tube 37 provided inside the inner tube 36, and a cylindrical insertion member 38 provided inside the sealing tube 37.

[0034] A second fitting portion 40 that protrudes inward in the radial direction 10 is formed around the entire inner periphery of the skirt 35. As shown in Fig. 1, when the cap 1 is unopened, the second fitting portion 40 of the lid 6 fits into the recessed portion 22 of the first fitting portion 21 of the cap body 4 (see Fig. 12) to prevent the lid 6 from accidentally opening due to, for example, vibration.

[0035] 1, when the cap 1 is unopened, the sealing tube 37 is inserted into the dispensing tube 17 and comes into tight contact with the entire inner circumferential surface of the dispensing tube 17. This seals the gap between the lid 6 and the dispensing tube 17.

[0036] When the cap 1 is unopened, the insertion member 38 is inserted into the inside of the pull ring 28 from the closing direction 33. That is, the outer diameter of the insertion member 38 is set smaller than the inner diameter of the pull ring 28. As shown in Figures 1 and 2, a plurality of ribs 41a, 41b, and 41c are provided on the outer periphery of the insertion member 38. The insertion member 38 is reinforced by these ribs 41a, 41b, and 41c.

[0037] 1, 2, 4, and 5, the tip of the insertion member 38 is provided with a plurality of first engagement pieces 43 (an example of engagement pieces) that can swing between a bent position P1 and a detached position P2 (see imaginary lines in FIG. 4). As shown by the solid lines in FIG. 4 and FIG. 5, the bent position P1 is a position in which the first engagement pieces 43 are folded back toward the outer peripheral surface of the insertion member 38 and bent obliquely toward the cover plate 34. As shown by the imaginary lines in FIG. 4 and the solid lines in FIG. 9, the detached position P2 is a position in which the first engagement pieces 43 are swung toward the opposite side of the cover plate 34. As shown in FIG. 2, these first engagement pieces 43 are curved in an arc shape in a plan view, and are provided at two locations in the circumferential direction 11 at the tip end of the insertion member . The ribs 41a, 41b, 41c are arranged between the first engagement pieces 43 at intervals of 120° in a plan view.

[0038] 1, the support post 27 and both first engagement pieces 43 are respectively disposed on the side closer to the hinge 5 with respect to the axis 7 of the cap 1 in the unopened state. In addition, the part 21a of the first fitting portion 21 and the part 40a of the second fitting portion 40 are disposed on the side farther from the hinge 5 with respect to the axis 7 of the cap 1 in the unopened state.

[0039] When the lid 6 is opened, each of the first engagement pieces 43 engages with the pull ring 28 from below in a bent position P1 as shown by the solid lines in FIG. 8, and after a tensile force F in the opening direction 32 is applied to the pull ring 28 from the lid 6, it swings from the bent position P1 to a detached position P2 and detaches from the pull ring 28 as shown by the imaginary lines in FIG. 8, the solid lines in FIG. 9, and FIG. 10. As shown in FIG. 5, both first engagement pieces 43 can engage with the pull rings 28 on both sides of the support column 27 in the circumferential direction 11 when in the bent position P1.

[0040] When opening an unopened cap 1, the opening degree of the lid 6 (the angle of the lid 6 relative to the cap body 4) when a portion 40a of the second fitting portion 40 on the side farther from the hinge 5 disengages from the recessed portion 22 of a portion 21a of the first fitting portion 21 as shown in Figure 6 is defined as α, and the opening degree of the lid 6 when the first engagement piece 43 in the bending position P1 begins to engage with the pull ring 28 as shown in Figure 7 is defined as β, and the relationship is set such that opening degree α < opening degree β. The operation of the above configuration will now be described.

[0041] As shown in FIG. 1, when the cap 1 is in an unopened state, the insertion member 38 is inserted into the pull ring 28, and both first engagement pieces 43 are positioned below the pull ring 28 with their positions switched to the bent position P1. At this time, since the second fitting portion 40 is fitted into the recessed portion 22 of the first fitting portion 21 over the entire periphery, it is possible to prevent the lid 6 from accidentally opening due to vibration or the like.

[0042] When opening the unopened cap 1, the lid 6 is rotated in the opening direction 32 as shown in Figures 6 and 7, and as shown by the solid lines in Figure 8, both first engagement pieces 43 engage with the pull ring 28 from below in a bent position P1, and after a tensile force F in the opening direction 32 is applied from the lid 6 to the pull ring 28, they swing from the bent position P1 to a detached position P2 and detach from the pull ring 28 as shown by the imaginary lines in Figure 8, the solid lines in Figure 9, and Figure 10.

[0043] At this time, as shown in Figure 11, the tensile force F is transmitted to the base portion 27a of the support 27 via the pull ring 28, and stress is generated in the base portion 27a of the support 27, causing a crack 46 to form in the weakened portion 24 near the base portion 27a of the support 27.

[0044] Thereafter, a finger is inserted into pull ring 28 and pulled with the finger to break weakened portion 24. At this time, because crack 46 has already occurred in one location of weakened portion 24 (near base portion 27a of support 27) as shown in FIG. 11 above, the force required to pull pull ring 28 and break weakened portion 24 is reduced. This reduces the strain on the finger.

[0045] By breaking the weakened portion 24 as described above, the detachment member 18 is detached from the cap body 4, and a pouring hole 25 is formed inside the pouring tube 17 of the cap body 4, as shown in Figure 12. Thereafter, by tilting the container 2, the content in the container 2 is poured out from the tip opening of the pouring tube 17 through the pouring hole 25 to the outside.

[0046] 11, the crack 46 is shown to have occurred downward from the upper surface of the weakened portion 24, but it may also have occurred upward from the lower surface of the weakened portion 24. Also, in FIG. 11, the crack 46 that has occurred downward from the upper surface of the weakened portion 24 does not reach the lower surface of the weakened portion 24, but it may reach the lower surface of the weakened portion 24. Similarly, the crack 46 that has occurred upward from the lower surface of the weakened portion 24 may reach the upper surface of the weakened portion 24.

[0047] Furthermore, when the lid 6 is rotated in the opening direction 32 as described above to open the unopened cap 1, the relationship of opening degree α<opening degree β is set as shown in Figures 6 and 7. Therefore, first, as shown in Figure 6, when the lid 6 opens to opening degree α, part 40a of the second fitting portion 40 disengages from the recessed portion 22 of part 21a of the first fitting portion 21, and immediately thereafter, as shown in Figure 7, when the lid 6 opens to opening degree β, the first engagement piece 43 in the bent position P1 begins to engage with the pull ring 28.

[0048] In this way, the timing at which the second fitting portion 40 disengages from the recessed portion 22 of the first fitting portion 21 and the timing at which the first engagement piece 43 in the bent position begins to engage with the pull ring 28 do not coincide in time but are shifted, thereby reducing the force required to open the lid 6. (Second embodiment)

[0049] The second embodiment will be described below with reference to Figures 13 to 16. Note that the same members as those in the first embodiment described above are given the same reference numerals and detailed description thereof will be omitted. In the second embodiment, as shown in FIG. 15, a plurality of ribs 41a and 41b are provided on the outer periphery of the insert member .

[0050] 13 and 14, a pressing member 60 is provided on the sealing tube 37 of the lid 6, which presses the support 27 in a direction 59 that tilts it toward the axis 7 of the cap 1 when the container is unopened. The pressing member 60 is a long, thin rib that extends along the axis 7 of the cap 1, and is provided at one location in the circumferential direction 11 on the inner surface of the sealing tube 37, as shown in FIG. The operation of the above configuration will now be described.

[0051] 13 and 14, when the cap 1 is unopened, the support post 27 is pressed in the falling direction 59 by the pressing member 60, which damages the weakened portion 24 near the base portion 27a of the support post 27, reducing the strength of the weakened portion 24 near the base portion 27a of the support post 27. As a result, when the cap 1 is opened, the first engagement piece 43 in the bent position P1 engages with the pull ring 28, and when a tensile force F in the opening direction 32 is applied from the lid 6 to the pull ring 28, cracks 46 are likely to occur in the weakened portion 24.

[0052] Furthermore, when the cap 1 is unopened and the pressing member 60 presses the support post 27 in the tilting direction 59, the support post 27 is sandwiched between the pressing member 60 and the outer peripheral surface of the insertion member 38 and fixed in the radial direction 10, as shown by the solid lines in Figures 13 and 14. This prevents the position of the pull ring 28 from inadvertently changing, and when the cap 1 is opened, the first engagement piece 43 in the bent position P1 reliably engages with the pull ring 28.

[0053] When the support 27 is pressed by the pressing member 60 as described above and the weakened portion 24 in the vicinity of the base portion 27a of the support 27 is damaged, a crack 46 may occur in the weakened portion 24. In this case, if the crack 46 occurs downward from the upper surface of the weakened portion 24, it is preferable that the crack 46 does not reach the lower surface of the weakened portion 24. Alternatively, if the crack 46 occurs upward from the lower surface of the weakened portion 24, it is preferable that the crack 46 does not reach the upper surface of the weakened portion 24.

[0054] Furthermore, since the cracks 46 are so fine that the contents in the container 2 cannot pass through the cracks 46, the cracks 46 may reach the upper and lower surfaces of the weakened portion 24 as long as there is no concern that they will leak from inside the container 2 through the cracks 46 into the inside of the dispensing tube 17.

[0055] In the first and second embodiments described above, a pull ring 28 is provided at the tip of the support 27 as an example of a pulling operation portion, but this is not limited to a pull ring 28, and for example, a rod-shaped or plate-shaped knob that can be held with the fingers may be provided at the tip of the support 27. (Third embodiment)

[0056] The third embodiment will be described below with reference to Figures 17 to 20. Note that the same members as those in the first and second embodiments described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0057] 17 and 18, a second engagement piece 65 that can swing between a bent position P1 and a detached position P2 is provided at the tip of the insertion member 38. The second engagement piece 65 is curved in an arc shape in a plan view, and is provided at one location between both first engagement pieces 43 in the circumferential direction 11. Moreover, the ribs 41a and 41b are each disposed between the first engagement pieces 43 and the second engagement pieces 65 in the circumferential direction 11. The second engagement piece 65 is disposed on the side farther from the hinge 5 with respect to the axis 7 of the cap 1 in the unopened state.

[0058] Similar to both first engagement pieces 43, the second engagement piece 65 is configured to engage with the pull ring 28 in the bent position P1 when the lid 6 opens the container, and after a tensile force F in the opening direction 32 is applied to the pull ring 28 from the lid 6, swing from the bent position P1 to a detached position P2 to detach from the pull ring 28. The second engagement piece 65 can engage with the pull ring 28 at a location on the opposite side of the support post 27 in the radial direction 10. The operation of the above configuration will now be described.

[0059] When opening the unopened cap 1, as shown in Figure 19, by opening the lid 6, the second engagement piece 65 engages with the pull ring 28 in a bent position P1 at a location opposite the support 27, and after applying a tensile force F in the opening direction 32 from the lid 6 to the pull ring 28, it swings from the bent position P1 to a detached position P2 and detaches from the pull ring 28, as shown in Figure 20.

[0060] As a result, the portion of pull ring 28 opposite support post 27 is pulled in opening direction 32, causing it to tilt in opening direction 32 relative to support post 27. As shown in Figure 20, even after lid 6 is opened, pull ring 28 does not completely return to its original position from the position tilted in opening direction 32, and the tilt described above remains in pull ring 28. Because pull ring 28 remains in this tilted position, it becomes easier to insert a finger into pull ring 28.

[0061] In each of the above embodiments, as shown in Figures 2, 15, and 18, two first engagement pieces 43 are provided at the tip of the insertion member 38, but three or more may be provided, or only one may be provided. [Explanation of symbols]

[0062] 1 cap 2 containers 4 Cap body 5 Hinge 6 Lid 7 axis center 18 Breakaway member 21 First fitting part 21a Part of the first fitting portion 24 Weakened part 25 Pour hole 27 Pillar 27a Base of the support 28 Pull ring (pulling operation part) 32 Opening direction 38 Insert 40 Second fitting part 40a Part of the second fitting portion 43 First engagement piece (engagement piece) 46 Crack 59 Direction to tilt the support 60 Pressing member 65 Second engagement piece P1 bent posture P2 Departure posture F tensile force S The part opposite the support

Claims

1. The cap has a cap body that is attached to the container, and a lid that is attached to the cap body via a hinge so as to be able to be opened and closed freely; The cap body has a release member surrounded by a breakable weakened portion; A cap in which the release member is released from the cap body by breaking the weakened portion, and a pouring hole is formed in the cap body, A support is provided on the release member, A tension operating portion is provided on the support, The base of the support is located near the weakened area, The lid is provided with an engagement piece that can swing between a bent position and a detached position, The cap is characterized in that, when opened, the engaging piece engages with the pulling operation portion in a bent position, applies a pulling force in the opening direction from the lid to the pulling operation portion, and then swings from the bent position to a detached position to detach from the pulling operation portion.

2. 2. The cap according to claim 1, wherein a crack occurs in the weakened portion near the base of the support rod due to a tensile force applied from the lid to the pulling operation portion.

3. 2. The cap according to claim 1, wherein the pulling operation portion is a pull ring.

4. The lid has an insertion member that is inserted into the pull ring in an unopened state, 4. The cap according to claim 3, wherein the engaging piece is provided on the insert member.

5. The insert member has a cylindrical shape; 5. The cap according to claim 4, wherein the engaging piece is provided at a tip end of the insertion member.

6. The support and the engagement piece are disposed on the side closer to the hinge with respect to an axis passing through the center of the cap in an unopened state, The cap body is provided with a first fitting portion, A second fitting portion is provided on the lid, At least a portion of the first fitting portion and at least a portion of the second fitting portion are each disposed on a side farther from the hinge with respect to the axis; In an unopened state, the second fitting portion fits into the first fitting portion, The cap described in claim 1, characterized in that when opening, the second fitting portion first disengages from the first fitting portion on the side farther from the hinge relative to the axis, and then the bent engaging piece begins to engage with the pulling operation portion on the side closer to the hinge relative to the axis.

7. 2. The cap according to claim 1, wherein the lid is provided with a pressing member that presses the support rod in a direction that tilts the support rod when the container is unopened.

8. The pulling operation portion is a pull ring, The cover is provided with first and second engagement pieces that are pivotable between a bent position and a detached position, the first engagement piece and the support post are disposed on a side closer to the hinge with respect to an axis passing through the center of the cap in an unopened state, the second engagement piece is disposed on a side farther from the hinge with respect to an axis passing through the center of the cap in an unopened state, When the lid is opened, the first and second engagement pieces engage with the pull ring in the bent position, and after applying a pulling force in the opening direction from the lid to the pull ring, they swing from the bent position to a detached position and detach from the pull ring; 2. The cap according to claim 1, wherein the second engagement piece is capable of engaging with the pull ring at a location on the radially opposite side from the support post.

Images