Hinge Cap

Abstract

To provide a hinge cap that has an opening ring that can be held and pulled by a finger to make it easy to lift a top cover when opening the hinge cap.SOLUTION: The hinge cap includes: a cap body A that is attached to a container body E; and a top cover B that is continuously provided on the cap body A via a hinge C. The cap body A includes: an attachment part 5 that is attached to a mouth 1 of the container body E; a barrier 7 that seals the inside of the attachment part 5; and a pour-out port α that is defined on the barrier 7 and is opened when opening the top cover B for the first time. The top cover B includes: a peak wall 30; a side peripheral wall 31 that is hanged from the periphery of the peak wall 30; and a knob part 37 that projects from the opposite side to the hinge C of the side peripheral wall 31. Characteristically, an opening ring 43 is provided that lifts the side of the knob part 37 of the top cover B when opening.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a hinge cap that is attached to a container body, and more particularly to a hinge cap that allows an upper lid to be easily opened when opening a container. [Background technology]

[0002] Conventionally, in a hinge cap consisting of a cap body that is attached to a container body and a top lid that is connected to the cap body via a hinge, a removal portion formed by a pull ring or the like has been provided at the intended opening portion of the partition of the cap body in order to ensure the airtightness of the container body. However, in order to open the removal portion, it is necessary to open the top lid and then pull up a pull ring or the like to remove the removal portion, which is time-consuming and poses the problem that users with weak strength may have difficulty removing the bottle.

[0003] Therefore, since eliminating the removal portion, which is the intended opening portion, would cause problems with sealing, such as the contents easily entering the hinge cap, a hinge cap has been known in the past that omits the pull ring and instead has a removal portion that is partitioned and formed in the partition of the cap body by a weakened portion, and consists of a flat surface and a cylindrical peripheral wall hanging down from the outer periphery of the flat surface, and a welding protrusion that is formed hanging down from the top wall of the top lid and welded to the flat surface of the removal portion, so that when the top lid is opened, the removal portion is opened by breaking the weakened portion (see, for example, Patent Document 1).

[0004] However, in the hinge cap described in Patent Document 1, there is a risk that the welding between the welding protrusion and the flat surface will be released before the weakened portion breaks, and therefore a hinge cap is also known which includes a cap body fixed to the mouth of a container and an upper lid, the cap body having a pouring tube portion extending in the vertical direction and a middle plate portion formed in an annular shape and located inside the pouring tube portion when viewed in a plan view from the vertical direction, an inner seal is formed in the upper lid which extends downward from the top wall of the upper lid and is inserted into the pouring tube portion to seal the inside of the pouring tube portion, and the inner seal and the middle plate portion are welded together (see Patent Document 2, for example). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2012-111535 A [Patent Document 2] JP 2020-196474 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, with the hinge caps described in Patent Documents 1 and 2 above, when opening the caps, it is necessary to lift the top lid while breaking the weakened portions or peeling off the welded portions, which requires a large force to lift the top lid, making it difficult to open.

[0007] The present invention has an object to solve the above problem and to provide a hinge cap that is equipped with an opening ring that can be used to hook a finger or the like and pull up the top lid when opening the hinge cap, making it easier to lift the top lid. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a hinge cap comprising a cap body attached to a container body and a top lid connected to the cap body via a hinge, the cap body comprising an attachment portion attached to the mouth of the container body, a partition wall closing the inside of the attachment portion, and a spout defined by the partition wall and opened when the top lid is first opened, the top lid comprising a top wall, a side wall hanging down from the periphery of the top wall, and a knob portion protruding from the side wall opposite the hinge, and comprising an opening ring for pulling up the knob portion side of the top lid when opening the top lid. The opening ring is provided on the top surface of the cap cover which is attached to cover the hinge cap. The configuration characterized by The hinge cap includes a cap body attached to the container body and a top lid connected to the cap body via a hinge, the cap body having an attachment portion attached to the mouth of the container body, a partition wall closing the inside of the attachment portion, and a spout defined by the partition wall and opened when the top lid is first opened, the top lid having a top wall, a side wall hanging down from the periphery of the top wall, and a knob portion protruding from the side wall opposite the hinge, and an opening ring for pulling up the knob portion side of the top lid when opening, the opening ring being formed integrally with the side wall of the top lid and being capable of being lifted upward from the hinge side with the knob portion side as a fulcrum. The present invention employs a configuration characterized by the above. In the above configuration, examples of hinge caps having a pouring outlet defined in the partition of the cap body and opened when the top lid is first opened include, for example, a hinge cap in which a transition plug portion defined in the partition of the cap body by a thin-walled weakened portion is lifted when the top lid is opened, breaking the thin-walled weakened portion to open the pouring outlet, and a hinge cap in which a middle plate portion located on the inside of the pouring tube of the cap body and an inner ring hanging down from the top wall of the top lid to seal the inside of the pouring tube are welded together, and the weld between the inner ring and the middle plate portion is peeled off when the top lid is opened, thereby opening the pouring outlet.

[0009] As an embodiment of the hinge cap, The cap cover a top wall covering the top wall of the top lid, and an outer peripheral wall hanging down from the periphery of the top wall and covering the side peripheral wall to the mounting part of the cap body, the opening ring being provided so as to be liftable upward from the hinge side with the knob side of the top wall as a fulcrum, and the outer peripheral wall having an engagement part which engages with the knob part of the top lid, The opening ring is The tip of the knob of the side wall is bent so as to be liftable. Effect of the Invention

[0010] By adopting the above-described configuration, the hinge cap of the present invention can easily open the top lid by hooking a finger or the like on the opening ring and pulling the knob side of the top lid upward when opening the top lid. [Brief description of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams showing a hinge cap according to a first embodiment of the present invention attached to a container body before opening, in which (a) is a top view and (b) is a side cross-sectional view. [Diagram 2] 1A and 1B are diagrams showing a hinge cap according to a first embodiment of the present invention attached to a container body before opening, in which (a) is a front view and (b) is an enlarged view of a main part of FIG. 1B. [Diagram 3] 1A and 1B are diagrams showing a hinge cap according to a first embodiment of the present invention in a closed state, where (a) is a side cross-sectional view and (b) is a bottom view. [Figure 4]1A and 1B are diagrams showing a cap cover according to a first embodiment of the present invention, in which (a) is a side cross-sectional view and (b) is a bottom view. [Diagram 5] 1A and 1B are side cross-sectional views showing the state when the hinge cap according to the first embodiment of the present invention is opened, in which (a) shows when the finger ring plate of the cap cover is standing, and (b) shows when the hinge cap is open. [Figure 6] 10A and 10B are diagrams showing a hinge cap according to a second embodiment of the present invention attached to a container body before opening, in which (a) is a top view and (b) is a side cross-sectional view. [Figure 7] 10A and 10B are diagrams showing a hinge cap according to a second embodiment of the present invention in a closed state, where (a) is a side view and (b) is a front view. [Figure 8] FIG. 11 is a top view showing a hinge cap according to a second embodiment of the present invention during molding. [Figure 9] 11A and 11B are diagrams showing a hinge cap according to a second embodiment of the present invention in an open state, in which (a) is a side view showing an opening ring of the upper lid standing up, and (b) is a side cross-sectional view showing the open lid. [Figure 10] 13A and 13B are diagrams showing a hinge cap according to a third embodiment of the present invention attached to a container body before opening, in which (a) is a top view and (b) is a side cross-sectional view. [Figure 11] 13A and 13B are diagrams showing a hinge cap according to a third embodiment of the present invention in a closed state, where (a) is a side view and (b) is a front view. [Figure 12] FIG. 11 is a top view showing a hinge cap according to a third embodiment of the present invention during molding. [Figure 13] 13A and 13B are diagrams showing a hinge cap according to a third embodiment of the present invention in an open state, in which (a) is a side view when the opening ring of the upper lid is erected, and (b) is a side cross-sectional view when the lid is open. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Next, the hinge cap of the present invention will be described with reference to the drawings in the following embodiments. In the following description, when looking at FIG. 1(b), the left side is referred to as the "front side or knob side (opposite the hinge)", the right side is referred to as the "rear side (hinge side)", the upward direction is referred to as the "top", and the downward direction is referred to as the "bottom". EXAMPLES

[0013] In Figure 1, A is a cap body attached to a container body E, B is an upper lid connected to the cap body A via a hinge C so as to be freely opened and closed, the cap body A, the hinge C, and the upper lid B form a hinge cap, and D is a cap cover attached to cover the hinge cap when the lid is closed. An engaging ridge 2 is provided on the outer periphery of the mouth 1 of the container body E.

[0014] As shown in Figures 1 to 3, the cap body A is composed of an attachment part 5 that is attached to the mouth part 1 of the container body E, a pouring tube 6 that is erected inside the attachment part 5, and a partition wall 7 that is connected inward from the attachment part 5 and seals the mouth part 1.

[0015] The mounting portion 5 is suspended from the outer peripheral edge of the partition 7 and comprises an inner tube 10 whose outer circumference is inserted into the inner circumference of the mouth 1 of the container body E, an outer tube 11 whose inner circumference engages with the outer circumference of the mouth 1, and a ring-shaped lid engagement portion 12 connected at the upper ends of the inner tube 10 and outer tube 11, and a bulge 13 that protrudes outward is provided at the upper part of the lid engagement portion 12.

[0016] The outer tube 11 has an engaging protrusion 14 protruding from the lower inner circumference which engages with an engaging protrusion 2 provided on the outer circumference of the mouth portion 1, and a locking step portion 15 for locking the cap cover D is recessed from the lower end into the lower outer circumference, and a hinge C is connected to the back side of the upper outer circumference.

[0017] The partition 7 has an upper wall portion 20 connected to the upper end of the inner circumference of the inner tube 10 of the mounting portion 5, and a transition plug portion 22 defined inside the upper wall portion 20 by a breakable thin-walled weakened portion 21 to open the spout α inside the upper wall portion 20 during use.

[0018] The transition plug portion 22 has a bottom wall 25 connected to the upper wall portion 20 via the thin-walled weakened portion 21, and a retaining upright wall 26 is erected on the upper surface of the bottom wall 25 along the inside of the thin-walled weakened portion 21, and an approximately cylindrical pull-up portion 27 is erected at a position on the front side of the partition wall 7. As shown in FIG. 3, a mountain-shaped engagement projection 29 is provided on the upper surface of the pull-up portion 27 via a step portion 28 so as to cover the cylindrical pull-up portion 27.

[0019] As shown in Figures 1 to 3, the top cover B has a flat top wall 30 and a side wall 31 that hangs down from the periphery of the top wall 30 and is rotatably connected to the upper outer periphery of the outer tube 11 of the cap body A via a hinge C on the back side of the lower outer periphery.

[0020] The top wall 30 has a sealing tube 32 disposed below it, the outer periphery of which is in close contact with the inner periphery of the pouring tube 6 of the cap body A, and a retaining wall 33 disposed vertically on the rear side within the sealing tube 32. An engagement hole 34 is opened on the front side of the top wall 30 within the sealing tube 32, and the inner periphery of the engagement hole 34 has a step at the bottom to provide an engagement portion 35 which engages with the engagement protrusion 29 at the top of the pull-up portion 27. The sealing tube 32 is arranged so that its outer periphery is in close contact with the inner periphery of the pouring tube 6 of the cap body A, and the retaining wall 33 is arranged so that its tip engages or abuts with the upper end of the retaining vertical wall 26 of the transition plug portion 22.

[0021] In this embodiment, when set, the upper part of the engagement protrusion 29 passes through the engagement hole portion 34, and by anti-slip processing such as welding, the upper part of the engagement protrusion 29 is expanded so as to fill the engagement hole portion 34, and the engagement protrusion 29 is engaged with the upper surface of the engagement portion 35. In addition, in this embodiment, an engagement protrusion 29 is provided above the pull-up portion 27, and an engagement hole 34 is opened in the top lid B. When the lid is closed after molding, the upper part of the engagement protrusion 29 is engaged with the engagement portion 35 by anti-slip processing. However, depending on the method for engaging the pull-up portion 27 and the engagement portion 35 of the top lid B, it is not necessary to open the engagement hole 34 in the top lid B, or a form in which an insert of a separate member is inserted through the engagement hole 34 and engaged with the pull-up portion 27 may be used, or a form in which an engagement protrusion hanging down from the top lid B is inserted into a hole opened in the pull-up portion 27 and fitted or welded. In short, any method is acceptable as long as the two can be firmly engaged. As the welding, heat welding, high frequency welding, ultrasonic welding, etc. can be adopted.

[0022] The side wall 31 has an engagement recess 36 formed around the inner circumference which engages with the lid engagement portion 12 and the bulge portion 13 of the cap body A to maintain the lid in a closed state, a hinge C is connected to the rear side of the outer periphery, and a knob portion 37 is protruded from the front side of the outer periphery.

[0023] As shown in Figures 1, 2 and 4, cap cover D comprises a top wall 41 which covers the top wall 30 of upper lid B when attached and which has an opening 40 facing inward, a finger ring plate 43 which is connected to the top wall 41 on the front side of the opening 40 via a deformable connecting plate 42 which faces inward from the opening 40 and serves as an opening ring and is formed in a ring shape of a predetermined width facing inward from the opening 40, and an outer peripheral wall 44 which hangs down from the periphery of top wall 41 and covers the outer tube 11 of the attachment portion 5 of cap body A from the side wall 31 of upper lid B when attached, and top wall 41 and finger ring plate 43 are connected by a plurality of breakable weakened pieces 45 which are arranged.

[0024] A lifting protrusion 46 is provided on the underside of the rear side of the finger ring plate 43, which abuts against the upper surface of the top wall 30 of the upper lid B when the cap cover D is attached to the hinge cap, and slightly lifts the rear side as shown in Figures 1(b) and 2(b).In order to lift only the rear side of the finger ring plate 43, bending portions 47 are formed on both sides which bend and deform part of the finger ring plate 43, and a finger hook portion 48 is provided on the inner circumference of the rear side. In this embodiment, the top wall 41 and the finger ring plate 43 are connected via a connecting plate 42 on the front side and weakened pieces 45 in the center of each side, and a bent portion 47 is provided on each side of the finger ring plate 43 at a position biased toward the rear side from the center, so that when only the rear side of the finger ring plate 43 is lifted, the finger ring plate 43 bends at the bent portions 47 on the rear side from the center on each side, and force is applied to the front side and near the weakened pieces 45 from the center on both sides of the finger ring plate 43, preventing deformation or breakage.

[0025] A knob engagement hole 50 is drilled on the front side of the outer peripheral wall 44 as an engagement part, into which the knob portion 37 protruding from the side peripheral wall 31 of the top cover B is inserted when the hinge cap is attached, and in a predetermined range on the rear side, an expanded diameter step portion 51 is formed from the lower end to a predetermined height, where the hinge C and the surrounding side peripheral wall 31 of the top cover B and the outer tube 11 of the cap body A abut against each other to prevent them from damaging each other, and a locking protrusion 52 that engages with the locking step portion 15 of the outer tube 11 of the cap body A protrudes from the lower end of the inner circumference, excluding the expanded diameter step portion 51.

[0026] Next, the manner of use and the effects of this embodiment will be described. The hinge cap of this embodiment is manufactured as a single unit by injection molding using a mold with the top cover B in an open state relative to the cap body A. When the top lid B of the integrally molded hinge cap is rotated around the hinge C as a fulcrum to close the cap body A, the sealing tube 32 of the top lid B comes into close contact with the dispensing tube 6 of the cap body A to form a seal, and the outer side of the lid engagement portion 12 and the bulge portion 13 of the cap body A fit into the engagement recess 36 of the top lid B to form a closed state. When the upper part of the engagement protrusion 29 of the transition plug portion 22 protruding from the top wall 30 of the upper lid B is processed to prevent it from coming loose by welding or the like, the upper part of the engagement protrusion 29 expands to fill the engagement hole portion 34, and the engagement protrusion 29 engages with the upper surface of the engagement portion 35.

[0027] Next, the knob portion 37 of the upper cover B of the closed hinge cap is inserted into the knob engagement hole 50 of the outer peripheral wall 44 of the cap cover D, and the cap cover D is placed over the hinge cap. As shown in FIG. 1, the locking protrusion 52 of the outer peripheral wall 44 is engaged with the locking step portion 15 of the outer tube 11 of the cap body A, thereby forming a hinge cap with the cap cover D set. When the cap cover D is placed on the hinge cap, an enlarged diameter step 51 is provided on the back side of the outer peripheral wall 44 of the cap cover D, so that the inner peripheral surface of the outer peripheral wall 44 does not come into contact with the hinge C, and the hinge C is not damaged and a part of the outer peripheral wall 44 of the cap cover D does not float off the hinge cap. Finally, the hinge cap with the cap cover D set thereon is screwed onto the mouth 1 of the container body E filled with the contents, thereby completing the container with the hinge cap attached. In this embodiment, the hinge cap is attached to the container body E by plugging, but it may be attached by screwing.

[0028] When the hinge cap of this embodiment is used for the first time, first, a finger or the like is hooked on the finger hook portion 48 on the rear side of the finger hook ring plate 43 which is the ring for opening the cap cover D. At this time, when the finger ring plate 43 is attached, the lifting protrusion 46 of the finger ring plate 43 abuts against the upper surface of the top wall 30 of the upper lid B and slightly lifts the back side of the finger ring plate 43, making it easy to hang a finger or the like.

[0029] When a finger or the like is hooked on finger hook portion 48 on the rear side and finger ring plate 43 is lifted upward, finger ring plate 43 is lifted from the rear side while breaking weakened piece 45 connecting top wall 41 and finger ring plate 43. Furthermore, as shown in Figure 5(a), connecting plate 42 deforms and the rear side of finger ring plate 43 is lifted while connected to top wall 41 with connecting plate 42 on the front side as a fulcrum.

[0030] Furthermore, when the rear side of the finger ring plate 43 is pulled up, the front side of the top wall 41 is pulled up via the connecting plate 42, and the entire cap cover D is lifted from the front side relative to the hinge cap. As the front side of the outer wall 44 of the cap cover D is lifted relative to the hinge cap, first the engagement between the locking protrusion 52 of the outer wall 44 and the locking step portion 15 of the outer tube 11 of the cap body A is released, and as the cap cover D is lifted, the inner bottom of the knob engagement hole 50 of the outer wall 44 abuts against the underside of the knob portion 37 of the inserted top lid B and is lifted. As the front side of the cap cover D is lifted and the knob portion 37 of the top lid B is lifted, the top lid B is lifted from the front side with the hinge C as a fulcrum, and the engagement between the lid engagement portion 12 of the cap body A and the engagement recess 36 of the top lid B is released, and the lid is opened.

[0031] When the top lid B is opened by lifting the front side of the cap cover D, as shown in Figure 5 (b), the thin-walled weakened portion 21 provided in the partition 7 of the cap body A breaks, and the transition plug portion 22 is removed from the partition 7 and then transferred to and supported by the top lid B, while the site of the removed transition plug portion 22 inside the upper wall portion 20 of the partition 7 of the cap body A becomes a pouring outlet α, making it possible to pour out the contents within the container body E. Furthermore, when top lid B is lifted from the front side using hinge C as a fulcrum, the tip side of knob 37 faces upward, the inner bottom of knob engagement hole 50 in outer wall 44 disengages from the underside of knob 37 of top lid B, and then knob 37 comes out from within knob engagement hole 50, and cap cover D is removed from the hinge cap with top lid B opened.

[0032] In the hinge cap and cap cover D of this embodiment, the top cover B of the hinge cap can be opened from the cap body A by hooking a finger or the like on the back side of the finger hook ring plate 43 of the cap cover D and pulling it up, and the attached cap cover D can be easily removed from the hinge cap. Furthermore, when initially opening the lid, in addition to the engagement between the outer side of the lid engagement portion 12 and the bulge portion 13 of the cap body A which maintains the closed state and the engagement recess 36 of the top lid B, the transfer plug portion 22 is removed from the partition 7 of the cap body A to open the spout α, and in order to break the thin-walled weakened portion 21, in the conventional case it was necessary to lift the knob portion 37 upwards, which was difficult to apply force and could be difficult to do. However, in this embodiment, the knob portion 37 can be lifted upwards and opened by hooking a finger or the like on the back side of the finger hook ring plate 43 of the cap cover D and pulling up, making it easier to apply force and allowing the top lid B to be easily opened from the cap body A.

[0033] After the contents have been used, the top lid B is closed again on the cap body A, forming a seal between the sealing tube 32 of the top lid B and the dispensing tube 6 of the cap body A, and the lid engagement portion 12 of the cap body A and the engagement recess 36 of the top lid B engage with each other, resealing the inside of the hinge cap, and the top lid B can be opened and closed repeatedly for use. The transition plug portion 22 is held in place by the outer periphery of the retaining vertical wall 26 engaging or abutting against the inner periphery of the retaining receiving wall 33 of the top lid B, so that the pouring outlet α of the partition 7 of the cap body A is closed by the bottom wall 25 of the transition plug portion 22 held by the top lid B. Furthermore, when opening the lid again, it is only necessary to disengage the outer lid engagement portion 12 and the bulge portion 13 of the cap body A, which maintains the closed state, from the engagement recess 36 of the top lid B, so that the lid can be easily opened by simply pushing the knob portion 37 upward.

[0034] In this embodiment, the cap cover D is removed from the hinge cap when the container is first opened, so that the open state of the container can be visually confirmed by the presence or absence of the cap cover D. Even if a used cap cover D is attached to the hinge cap again, the weakened piece 45 connecting the top wall 41 of the cap cover D and the finger ring plate 43 is broken at the time of first use, so that the opened state of the container can be confirmed. EXAMPLES

[0035] Next, a second embodiment in which the hinge cap of the first embodiment is modified will be described. In the following, the same components as those in the first embodiment are given the same reference numerals, and only different components are given different reference numerals, and the differences will be mainly described.

[0036] In Figure 6, F is a cap body attached to a container body E, G is a top lid connected to the cap body F via a hinge C so as to be freely opened and closed, and the cap body F, hinge C, and top lid G form a hinge cap, and H is an opening ring connected to the top lid G via a pair of bendable connecting parts I and fitted into the top lid G.

[0037] As shown in Figures 6 to 8, the cap body F is provided with an attachment portion 55 which is attached to the mouth portion 1 of the container body E, an injection tube 56 which is erected inside the attachment portion 55, an inclined portion 57 which is connected to the lower end of the inner periphery of the injection tube 56 and inclines downward toward the inside, and an annular middle plate portion 58 which protrudes inward from the lower end of the inclined portion 57, and the inside of the middle plate portion 58 opens as an injection outlet β.

[0038] The mounting portion 55 comprises an inner tube 60 whose outer periphery is inserted into the inner periphery of the mouth 1 of the container body E, an outer tube 61 whose inner periphery engages with the outer periphery of the mouth 1, and a ring-shaped lid engagement portion 62 connected to the upper ends of the inner tube 60 and outer tube 61, and a bulge 63 that protrudes outward is provided at the upper part of the lid engagement portion 62, and a pouring tube 56 is erected from the lower end of the inner periphery of the inner tube 60. The outer cylinder 61 has an engaging protrusion 64 protruding from the lower inner periphery, which engages with an engaging protrusion 2 provided on the outer periphery of the mouth portion 1, and a hinge C is connected to the rear side of the upper outer periphery.

[0039] As shown in Figures 6 to 8, the top cover G comprises a flat top wall 65 and a side wall 66 that hangs down from the periphery of the top wall 65 and is rotatably connected to the upper outer periphery of the outer tube 61 of the cap body F via a hinge C on the back side of the lower outer periphery. An opening ring H is detachably attached to the upper outer periphery of the side wall 66, and the side wall 66 is rotatably connected to the front side of the periphery via a pair of bendable connecting parts I.

[0040] The top wall 65 has, vertically extending from the underside, a sealing tube 67 whose outer periphery is in close contact with the inner periphery of the pouring tube 56 of the cap body F, and an inner ring 68 whose tip portion 68a is welded to the upper surface of the middle plate portion 58 of the cap body F after the initial closing.

[0041] The side peripheral wall 66 has an engagement recess 69 formed around its inner circumference which engages with the lid engagement portion 62 and the bulge portion 63 of the cap body F to maintain the lid in a closed state, and a pair of notches 70 are cut out at the top and bottom on both sides of the outer circumference at a predetermined angle (30° in this embodiment) from the center of the front side, dividing the front side (in this embodiment, a 60° range) between the notches 70 into a front portion 66a and the back side (in this embodiment, a 300° range) into a side peripheral portion 66b.

[0042] A knob 71 is provided to protrude from a front portion 66a of the side peripheral wall 66, and a hinge C is provided adjacent to a side peripheral surface portion 66b. The side peripheral surface portion 66b is recessed with an attachment step portion 72 consisting of a peripheral surface 72a and a bottom surface 72b at a predetermined height (the height of the opening ring H) from the upper end, and the attachment step portion 72 at the center of the rear side is formed with a finger hook lower recess 73 recessed further downward. A connecting portion I is formed at each end of the mounting step portion 72 on the side peripheral surface portion 66b side of the notch portions 70 on both sides.

[0043] The opening ring H is fitted into the mounting step 72 of the side wall 66 and consists of an arc-shaped notched ring portion 75 whose outer periphery is formed flush with the outer periphery of the top lid G, and the lower ends of the notched ends 76 on both sides of the arc are connected to the top lid G via their respective connecting portions I. The notched ring portion 75 forms an inner surface 75a that engages with the peripheral surface 72a of the mounting step portion 72 and a lower surface 75b that abuts the bottom surface 72b, and a finger-hook upper recess 77 is recessed upward from the lower surface 75b in the center of the rear side.

[0044] Next, the manner of use and the effects of this embodiment will be described. As shown in Figure 8, the hinge cap of this embodiment is manufactured as a single unit by injection molding using a mold with the top lid G opened relative to the cap body F and an opening ring H connected to the top lid G via a connecting part I. In the integrally molded hinge cap, first, the opening ring H is rotated on the connecting parts I on both sides of the top cover G as fulcrums, and the opening ring H is fitted onto the mounting step part 72 of the top cover G. Next, when the top lid G is rotated around the hinge C to close the cap body F, the sealing tube 67 of the top lid G fits tightly against the pouring tube 56 of the cap body F to form a seal, and the outer side of the lid engagement portion 62 and the bulge portion 63 of the cap body F fit into the engagement recess 69 of the top lid G to achieve a closed state. Furthermore, when the lid is closed, the tip portion 68a of the inner ring 68 hanging down from the top wall 65 of the upper lid G abuts against the upper surface of the middle plate portion 58 inside the pouring tube 56 of the cap body F, and the contact portion is post-processed and welded to seal the inside of the middle plate portion 58. Finally, the closed hinge cap is attached to the mouth 1 of the container body E filled with the contents, thereby completing the container with the hinge cap attached.

[0045] When using the hinge cap of this embodiment for the first time, first, insert a finger or the like between the upper finger hook recess 77 of the opening ring H and the lower finger hook recess 73 of the mounting step 72 of the top cover G, hook the finger or the like in the upper finger hook recess 77, and lift up the back side of the notched ring portion 75.

[0046] As the rear side of the notched ring portion 75 is lifted, the connecting portions I on both sides of the front side bend and rotate around the fulcrum, and as shown in Figure 9(a), the opening ring H is released from the top lid G, and the rear side of the notched ring portion 75 becomes upright with the connecting portions I on the front side as the fulcrum.

[0047] Furthermore, as the notched ring portion 75 is pulled up, the front side of the top lid G is pulled up via the connecting portions I on both sides, and the top lid G is lifted from the front side with the hinge C as a fulcrum, causing the lid engagement portion 62 of the cap body F and the engagement recess 69 of the top lid G to disengage, and the lid is opened. Furthermore, when the top lid G is opened by pulling up the opening ring H, the welding between the tip portion 68a of the inner ring 68 of the top lid G and the upper surface of the middle plate portion 58 of the cap body F is peeled off, as shown in Figure 9(b), and the inside of the middle plate portion 58 is opened as the pouring outlet β, making it possible to pour out the contents inside the container body E.

[0048] In the hinge cap of this embodiment, the top lid G can be opened from the cap body F by hooking a finger or the like on the back side of the opening ring H and pulling it up. Conventionally, when initially opening the lid, in addition to the outer side and bulge portion 63 of the lid engagement portion 62 of the cap body F maintaining the closed state engaging with the engagement recess 69 of the top lid G, the welding between the tip portion 68a of the inner ring 68 of the top lid G and the upper surface of the middle plate portion 58 of the cap body F had to be peeled off, which required force. However, in this embodiment, the top lid G can be opened from the cap body F by pulling up the back side of the opening ring H, making it easier to apply force and allowing the top lid G to be easily opened from the cap body F.

[0049] After the contents have been used, the top lid G is closed again on the cap body F, forming a seal between the sealing tube 67 of the top lid G and the pouring tube 56 of the cap body F, and the lid engagement portion 62 of the cap body F and the engagement recess 69 of the top lid G engage with each other, resealing the inside of the hinge cap, allowing the top lid G to be opened and closed repeatedly for use. Furthermore, when the lid is closed, the tip portion 68a of the inner ring 68 of the top lid G comes into contact with the upper surface of the middle plate portion 58 of the cap body F, thereby sealing the inside of the middle plate portion 58.

[0050] After using the opening ring H, the opening ring H is rotated relative to the top lid G using the connecting parts I on both sides as fulcrums, and the opening ring H is refitted into the mounting step part 72 of the top lid G, so that the opening ring H does not get in the way. When opening the lid again, the outer lid engagement portion 62 and the bulge portion 63 of the cap body F, which maintains the closed state, are disengaged from the engagement recess 69 of the top lid G, so the lid can be easily opened by simply pushing the knob portion 71 upward. EXAMPLES

[0051] Next, a third embodiment in which the top cover G of the second embodiment is modified will be described. In the following, the same components as those in the second embodiment are given the same reference numerals, and only different components are given different reference numerals, and differences will be mainly described.

[0052] In Figure 10, F is a cap body attached to a container body E, J is a top lid connected to the cap body F via a hinge C so as to be freely opened and closed, and the cap body F, hinge C, and top lid J form a hinge cap, and K is an opening ring connected to the top lid J via a bendable connecting part L and fitted into the top lid J.

[0053] As shown in Figures 10 to 12, the top cover J comprises a flat top wall 65 and a side wall 80 that hangs down from the periphery of the top wall 65 and is rotatably connected to the upper outer periphery of the outer tube 61 of the cap body F via a hinge C on the back side of the lower outer periphery, and an opening ring K is detachably attached to the upper outer periphery of the side wall 80, and is rotatably connected to the front side of the periphery via a bendable connecting part L. A sealing cylinder 67 and an inner ring 68, the tip portion 68a of which is welded to the upper surface of the middle plate portion 58 of the cap body F, are vertically provided from the bottom surface of the top wall 65.

[0054] The side wall 80 has an engagement recess 69 around its inner circumference to maintain the lid in a closed state, and an attachment step 82 is recessed around its outer circumference at a predetermined height from the top end (the height of the opening ring K) and consisting of a peripheral surface 82a and a bottom surface 82b. A lower gripping portion 83 protrudes from the lower part of the attachment step 82 on the front side, with an upper surface 83a flush with the bottom surface 82b and a connecting portion L connected to its upper tip, and a hinge C is connected to the lower end on the rear side. The mounting step 82 at the center of the rear side of the outer periphery of the side peripheral wall 80 is further formed with a finger hook lower recess 84 recessed downward.

[0055] The opening ring K is fitted into the mounting step 82 of the side wall 80 and consists of a finger ring portion 85 whose outer periphery is formed so as to be flush with the outer periphery of the top cover J, and an upper gripping portion 86 connected to the lower front side of the finger ring portion 85, and the tip of the upper gripping portion 86 is connected to the lower gripping portion 83 via a connecting portion L.

[0056] The finger ring portion 85 forms an inner surface 85a that engages with the peripheral surface 82a of the mounting step portion 82 and a lower surface 85b that abuts against the bottom surface 82b, and a finger upper recess 87 is recessed upward from the lower surface 85b in the center of the back side. Upper knob 86 has a lower surface 86a which is flush with lower surface 85b of finger ring portion 85 and is formed to abut against upper surface 83a of lower knob 83 when set.

[0057] Next, the manner of use and the effects of this embodiment will be described. The hinge cap of this embodiment is manufactured as a single unit by injection molding using a mold, with the top lid J opened relative to the cap body F and an opening ring K connected to the top lid J via a connecting portion L, as shown in Figure 12. In the integrally molded hinge cap, first, the opening ring K is rotated around the connecting portion L of the top cover J as a fulcrum, and the opening ring K is fitted into the mounting step portion 82 of the top cover J. Next, the top lid J is rotated around the hinge C of the cap body F to close the lid, and the tip portion 68a of the inner ring 68 of the top lid J and the abutting portion of the middle plate portion 58 of the cap body F are post-processed and welded to seal the inside of the middle plate portion 58. Finally, the closed hinge cap is attached to the mouth 1 of the container body E filled with the contents, thereby completing the container with the hinge cap attached.

[0058] When using the hinge cap of this embodiment for the first time, first, insert a finger or the like between the upper finger hook recess 87 of the opening ring K and the lower finger hook recess 84 of the mounting step 82 of the top cover J, hook the finger or the like in the upper finger hook recess 87, and lift up the back side of the finger hook ring portion 85.

[0059] As the rear side of finger ring portion 85 is lifted, the connecting portion L on the front side of the adjacent upper gripping portion 86 bends and rotates around the fulcrum, and as shown in Figure 13(a), the opening ring K is removed from the top cover J, and the rear side of finger ring portion 85 becomes upright with the connecting portion L on the front side as the fulcrum.

[0060] Furthermore, as the finger ring portion 85 is pulled up, the lower gripping portion 83 of the top lid J is pulled up via the connected connecting portion L, and the top lid J is lifted from the front side using the hinge C as a fulcrum. As the top lid J is opened, as shown in Figure 13(b), the welding between the tip portion 68a of the inner ring 68 of the top lid J and the upper surface of the middle plate portion 58 of the cap body F is peeled off, and the inside of the middle plate portion 58 is opened as the pouring outlet β, making it possible to pour out the contents of the container body E.

[0061] In the hinge cap of this embodiment, the top lid J can be opened by hooking a finger or the like on the back side of the opening ring K and pulling it up, making it easier to apply force and allowing the top lid J to be easily opened from the cap body F.

[0062] After using the opening ring K, the opening ring K is rotated relative to the top lid J using the connecting part L as a fulcrum, and the opening ring K is refitted into the mounting step part 82 of the top lid J, so that the opening ring K does not get in the way. When opening the lid again, it is only necessary to disengage the outer lid engagement portion 62 and the bulge portion 63 of the cap body F, which maintains the closed state, from the engagement recess 69 of the top lid J, so that the lid can be easily opened by simply placing a finger or the like on the lower grip portion 83 of the top lid J, which is fitted with the opening ring K, and pushing it upward. The other effects are the same as those of the second embodiment. [Industrial Applicability]

[0063] The hinge cap of the present invention allows the top lid to be easily opened by hooking a finger or the like on the opening ring and pulling upward on the knob side of the top lid, making it suitable as a hinge cap for sealed containers that require strong force to open. [Explanation of symbols]

[0064] A, F Cap body B, G, J upper lid C Hinge D Cap Cover E Container body H, K Opening ring I, L connection part α, β spout 1 Mouth 2 Engagement ridges 5, 55 Mounting part 6, 56 pouring tube 7 Bulkhead 10, 60 inner cylinder 11, 61 Outer cylinder 12, 62 Lid engaging part 13, 63 bulge 14, 64 Engagement protrusion 15 Locking step 20 Upper wall 21 Thin weakened part 22 Transfer plug 25 Bottom wall 26 Retaining standing wall 27 Lifting section 28 Step section 29 Attachment protrusion 30, 65 Top wall 31, 66, 80 Side walls 32, 67 Closed envelope 33 Retaining wall 34 Engagement hole 35 Attachment 36, 69 Engagement recess 37, 71 Knob 40 Opening 41 Ceiling Wall 42 Connecting plate 43 Finger ring plate (opening ring) 44 Peripheral wall 45 Weakening piece 46 Lifting protrusion 47 Bend 48 Finger rest 50 Knob engagement hole (engagement part) 51 Expanded diameter step 52 Locking protrusion 57 Slope 58 Middle plate 66a Front section 66b Side peripheral part 68 Inner Ring 68a Tip 70 Notch 72, 82 Mounting step 72a, 82a circumferential surface 72b, 82b bottom 73, 84 Finger hook recess 75 Notched ring part 75a, 85a inner surface 75b, 85b, 86a bottom side 76 Notched end 77, 87 Finger hook upper recess 83 Lower grip 83a top surface 85 Finger ring part 86 Upper grip

Claims

1. A hinge cap including a cap body attached to a container body and a top lid connected to the cap body via a hinge, The cap body includes an attachment portion that is attached to the mouth of the container body, a partition wall that closes the inside of the attachment portion, and a spout that is defined by the partition wall and that is opened when the top lid is first opened, The upper cover includes a top wall, a side wall depending down from a periphery of the top wall, and a knob protruding from the side wall opposite the hinge, Equipped with an opening ring that pulls up the knob side of the top lid when opening, The hinge cap is characterized in that the opening ring is provided on the top surface of a cap cover that is attached so as to cover the hinge cap.

2. The cap cover comprises a top wall covering the top wall of the upper lid, and an outer peripheral wall hanging down from the periphery of the top wall and covering from the side peripheral wall to the mounting portion of the cap body, The opening ring is provided so as to be liftable upward from the hinge side with the knob side of the top wall as a fulcrum, 2. The hinge cap according to claim 1, wherein the outer peripheral wall has an engagement portion that engages with a knob portion of the upper cover.

3. A hinge cap comprising a cap body attached to a container body and an upper lid connected to the cap body via a hinge, The cap body includes an attachment portion that is attached to the mouth of the container body, a partition wall that closes the inside of the attachment portion, and a spout that is defined by the partition wall and that is opened when the top lid is first opened, The upper cover includes a top wall, a side wall depending down from a periphery of the top wall, and a knob protruding from the side wall opposite the hinge, Equipped with an opening ring that pulls up the knob side of the top lid when opening, The opening ring is formed integrally with a side peripheral wall of the upper cover and is arranged so as to be liftable upward from the hinge side with the knob side as a fulcrum.

4. 4. The hinge cap according to claim 3, wherein the opening ring is provided such that a tip of a knob portion of the side peripheral wall can be bent so as to be liftable.

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