Hinge cap and setting method of hinge cap

Abstract

To provide a hinge cap which suppresses deformation of an upper lid when an insert rod part provided on a cap body is pushed up from below and inserted into a seal cylinder of the upper lid.SOLUTION: A hinge cap comprising: a cap body B extending vertically an insertion rod part E3 via a break part E2 from a lower part of a pouring port 4a on which a pouring cylinder 5 is erected; and an upper lid D which a sealing cylinder 42 for sealing the pouring cylinder 5 is suspended from a top wall 40, wherein the cap body B has a lid engagement part 11 erected from a mounting part 3 except for a hinge C side, and a rear surface protrusion part 12 erected on the hinge C side, the upper lid D is formed on a lower part of a side peripheral wall 41, an engagement recess 45 that engages with the lid engagement part 11 has an outer fitting part 46 that fits with an outer side of the lid engagement part 11 and an inner fitting part 47 that fits with an inner side of the lid engagement part 11 at a distance in a peripheral direction except for the hinge C side, the insertion rod part E3 is detached from the cap body B and closes an inner periphery of the seal cylinder 42 when pushed up from below.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a hinge cap that is attached to the mouth of a container, and more particularly to a hinge cap that prevents the content liquid from accumulating in a sealing tube of an upper lid, and a method for setting the hinge cap. [Background technology]

[0002] Conventionally, hinge caps have been known which comprise a cap body that is attached to a container and a top lid that is attached to the cap body via a hinge, and when the lid is closed, a sealing tube of the top lid is fitted into the pouring tube of the cap body to create a seal. In conventional hinge caps, in order to ensure sealing performance, the pouring tube of the cap body is sealed with a sealing tube that hangs down from the top wall of the upper lid. However, there was a possibility that the contents would accumulate inside the sealing tube during use, causing contamination by the contents.

[0003] For this reason, a hinge cap is known in which a support tube portion is hung down from the upper wall, connected to the pouring tube, and consisting of an inward-facing flange-shaped bottom wall attached to the lower end of the cylindrical peripheral wall, and an insert rod portion extending vertically via a breaking portion is connected to the inner peripheral end of the flange-shaped bottom wall, and when the insert rod portion is pushed up from below, the breaking portion breaks, causing the insert rod portion to detach from the flange-shaped bottom wall and be inserted into the sealing tube, thereby sealing the inner circumference of the sealing tube (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2022-57615 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the hinge cap described in Patent Document 1 above, when the insert rod portion provided on the cap body is pushed up from below and inserted into the sealing tube of the top lid, the top lid is prone to deform radially outward, causing the sealing tube of the top lid to go beyond the intended sealing position and penetrate too far below the dispensing tube of the cap body, resulting in deformation of the dispensing tube. Furthermore, the hinge cap described in Patent Document 1 above has the problem that it is not possible to ensure an air passage necessary for leak testing of the seal formed between the pouring tube of the cap body and the sealing tube of the upper lid.

[0006] The present invention has an objective of solving the above-mentioned problems and provides a hinge cap and a method for setting a hinge cap that suppresses deformation of the top cover when the insert rod portion on the cap body is pushed up from below and inserted into the sealing tube of the top cover. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a hinge cap comprising a cap body having an insert rod portion extending vertically from a lower portion of a pouring outlet on which a pouring tube is erected via a breakage portion, and an upper lid connected to the cap body via a hinge and having a seal tube that seals the pouring tube suspended from the lower surface of a top wall, the cap body comprising an attachment portion attached to the mouth of a container, a lid engagement portion erected from the attachment portion except on the hinge side, and a back surface erected from the attachment portion on the hinge side. The cap has a side protrusion, and the upper cover has a side wall extending vertically from the periphery of the top wall and an engagement recess formed in the lower part of the side wall and engaging with the lid engagement portion, and the engagement recess has an outer fitting portion that fits with the outside of the lid engagement portion, and an inner fitting portion that fits with the inside of the lid engagement portion and at a circumferential distance except on the hinge side, and the insertion rod portion is configured so that when pushed up from below, the breaking portion breaks, detaches from the cap body, and is inserted into the sealing tube, sealing the inner periphery of the sealing tube. In one embodiment of the hinge cap, the upper cover has a ring-shaped portion having a thin wall recessed from the lower surface of the top wall toward the outer periphery of the sealing cylinder.

[0008] Furthermore, as a method for setting a hinge cap, there is adopted a method for setting a hinge cap comprising a cap body in which an insert rod portion extends vertically from the bottom of the pouring outlet on which the pouring tube is erected, via a breaking portion, and a top lid which is connected to the cap body via a hinge and has a sealing tube that seals the pouring tube suspended from the underside of the top wall, wherein the method adopts a configuration in which the upper peripheral edge of the top lid in the closed state is fixed to a pressing jig, the insert rod portion is pushed up from below, the breaking portion is broken, and the insert rod portion detached from the cap body is inserted into the sealing tube. As an embodiment of a method for setting a hinge cap, a configuration is adopted in which the top cover has a side wall extending vertically from the periphery of the top wall, and the pressing jig has a ring-shaped downward surface portion that abuts against the upper surface of the top wall, and an inward surface portion that is extended vertically from the periphery of the downward surface portion and abuts against the outer peripheral surface of the upper end of the side wall. Effect of the Invention

[0009] By adopting the above-mentioned configuration, the hinge cap and hinge cap setting method of the present invention can suppress deformation of the top lid when the insert rod portion provided on the cap body is pushed up and inserted into the sealing tube of the top lid, and can prevent the sealing tube of the top lid from going beyond the intended sealing position and penetrating too far below the pouring tube of the cap body. [Brief description of the drawings]

[0010] [Figure 1] 1A and 1B are diagrams showing the closed state of a hinge cap according to an embodiment of the present invention, where (a) is a side cross-sectional view when set on a pressing jig after molding, and (b) is a side cross-sectional view when set on a container after the insert rod portion is pushed up. [Diagram 2] 1A and 1B are diagrams showing an open state of a hinge cap according to an embodiment of the present invention, in which (a) is a top view and (b) is a side cross-sectional view. [Diagram 3]2(a) is an enlarged cross-sectional view of the side of the cap body cut radially from the center O, where (a) is an enlarged cross-sectional view taken along line O-X1 (0° from the center of the hinge), (b) is an enlarged cross-sectional view taken along line O-X2 (45° from the center of the hinge), (c) is an enlarged cross-sectional view taken along line O-X3 (60° from the center of the hinge), and (d) is an enlarged cross-sectional view taken along line O-X4 (95° from the center of the hinge). [Figure 4] 1(b) is an enlarged cross-sectional view of a main part of a portion where a lid engagement portion is sandwiched between an outer fitting portion and an inner fitting portion in FIG. [Diagram 5] 10A to 10C are top views showing a process of separating hinge caps from a container to which the hinge caps are attached according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Next, the hinge cap of the present invention will be described with reference to the drawings showing an embodiment. In the following description, in FIG. 1, the left side is the "pouring side", the right side is the "rear side", the upper side is the "upper", and the lower side is the "lower".

[0012] (Example) In Figure 1, A is a container, B is a cap body attached to container A, and D is a top lid that is attached to cap body B via hinge C in an openable and closable manner. The hinge cap of this embodiment comprises cap body B, hinge C, and top lid D. As shown in FIG. 1(b), container A has a mouth 1 at its upper part, and a fitting ridge 2 is provided on the upper outer periphery of mouth 1, and the upper outer periphery of fitting ridge 2 forms an inclined surface 2a.

[0013] As shown in Figures 1 and 2, the cap body B comprises an attachment portion 3 that is fitted into the mouth portion 1 of the container A, an upper wall 4 that extends inward from the inner edge of the attachment portion 3 and seals the opening of the mouth portion 1, a pouring outlet 4a that penetrates the upper wall 4, a pouring tube 5 that is erected on the upper surface of the upper wall 4 with a diameter slightly wider than the pouring outlet 4a, a support tube portion E1 that is suspended from the pouring outlet 4a of the upper wall 4, and an insert rod portion E3 that is connected to the lower end of the inner periphery of the support tube portion E1 via a breakable breaking portion E2 and extends vertically. The pouring tube 5 is erected at an eccentric position on the pouring side (opposite the hinge C) from the upper wall 4, and in this embodiment, in order to make it easier to pour the contents, the pouring side is formed higher than the back side, and the lip portion 5a is widened into a trumpet shape.

[0014] The mounting portion 3 is composed of a base wall portion 6 that abuts against the upper surface of the mouth portion 1 of the container A, an inner tube 7 that hangs down from the inner side of the base wall portion 6, and an outer peripheral wall portion 8 that hangs down from the outer peripheral side of the base wall portion 6, and a hinge C is connected to the upper end of the back side of the outer peripheral wall portion 8, and an engaging protrusion 9 is provided at the lower inner periphery that engages with the mating protrusion 2 of the mouth portion 1 of the container A.

[0015] As shown in Figure 2(a), the base wall portion 6 is formed in an arc shape leaving a notch portion 10 cut into the upper wall 4 at the same height as the upper surface of the upper wall 4 within a predetermined range θ (in this embodiment, 30° to the left and right to match the width of the hinge C) from the center of the rear side (hinge C side), and a lid engagement portion 11 that engages with the upper lid D is provided upright. Within the notch portion 10, multiple rear side protrusions 12 (three in this embodiment) are provided and arranged with equally spaced gaps from both ends of the lid engagement portion 11. The lid engaging portion 11 has a locking protrusion 13 on its outer periphery.

[0016] At the upper part of the outer peripheral wall portion 8, on the pouring side, there is a stepped recess 15 recessed from the outer periphery in an arc shape over a range of approximately 180°, a distance α from above, and on the remaining back side, the upper surface 8a is flush with the upper surface of the upper wall 4 and the bottom surface of the cutout portion 10, and a hinge C is connected to the upper end of the outer periphery. The step recess 15 is formed with a flat surface 15a that is a distance α below the top surface 8a, an inclined surface 15b that slopes upward and inward from the inner peripheral edge of the flat surface 15a, and inclined side surfaces 15c that slope from both sides of the end of the flat surface 15a toward both sides of the top surface 8a.

[0017] Near the left of hinge C of outer peripheral wall portion 8, a peripheral cutout portion 16 having a generally V-shape in plan view is cut into the outer peripheral surface from upper surface 8a, leaving a thin bottom wall at the lower end. At a position corresponding to the outer peripheral notch 16 of the engaging protrusion 9 on the inner circumference of the outer peripheral wall portion 8, an inner peripheral notch (not shown) is engraved vertically, and the outer peripheral wall portion 8 in that portion is cut from inside and outside to form a vertical weakened portion 17 that constitutes a vertical tear line that thins the wall.

[0018] On the hinge C side of the outer peripheral cut-out portion 16 on the back side of the outer peripheral wall portion 8, a slit groove 18 is recessed from the upper surface 8a, starting from a position separated by the thin-walled portion on the upper inner peripheral side of the end face 16a, extending circumferentially to the inclined side surface 15c of the step recess 15 on the right end side of the upper surface 8a, and the upper surface 8a on the opposite side of the hinge C of the outer peripheral cut-out portion 16 of the outer peripheral wall portion 8 forms a thick-walled portion 19 which integrally connects the upper part of the outer peripheral wall portion 8 and the lower part of the base wall portion 6.

[0019] As shown in Figures 2 and 3(a), the bottom surface 20 of the slit groove 18 is recessed deepest from the top surface 8a by a distance β from the end surface 16a to the center of the hinge C (rear side) (line O-X1 in Figure 2(a)). As shown in Figure 3(b), the bottom surface 20b is located at approximately 45° from the center of the hinge C toward the right (line O-X2 in Figure 2(a)). As shown in Figure 3(c), the bottom surface 20c is located at approximately 60° from the center of the hinge C toward the right (line O-X3 in Figure 2(a)). The height from the top surface 8a gradually becomes shallower from the distance β. Finally, as shown in Figure 3(d), the inclined side surface 15c of the step recess 15 is cut out at approximately 95° from the center of the hinge C toward the right (line O-X4 in Figure 2(a)), and is connected to the end of the flat surface 15a at a distance α.

[0020] As shown in Figure 2, the inner side of the bottom surface 20 forms a thin-walled lower lateral weakened portion 21 that connects the outer peripheral wall portion 8 from the end face 16a side to the center of the hinge C to the lower wall portion of the base wall portion 6, and an arc-shaped connecting portion 22 is provided that slopes inward and upward from the inner peripheral edge of the bottom surface 20, which slopes upward from the center of the hinge C to approximately 95°. In addition, the portion of the outer peripheral wall portion 8 outside the slit groove 18 on the rear side constitutes a rear outer wall portion 23 that stands upright from the bottom surface 20 of the slit groove 18 to the upper surface 8a, and a hinge C is connected to a predetermined position on the outer peripheral upper end of the rear outer wall portion 23.

[0021] As shown in Figures 2 and 3(a), on the upper inner periphery of the outer peripheral wall portion 8, from the left side to the center of the back side, a contact surface portion 24 is formed which slopes inward and upward from above the lower lateral weakening portion 21 and abuts against the inclined surface 2a of the fitting protrusion 2 when attached to the container A, and from the center of the back side to the right side, a parallel surface 25 is provided above the height of the inclined bottom surface 20, as shown in Figures 2 and 3(b), which slopes inward and upward parallel to the outer surface of the outer connecting portion 22 and is formed so as to move away from the inclined surface 2a of the fitting protrusion 2 when attached to the container A, and the area between the parallel surface 25 and the outer surface of the connecting portion 22 is thinned to form an inclined connecting weakening portion 26, and on the pouring side, within the range of the step recess 15, as shown in Figures 2 and 3(d), an upward recess 27 is recessed from below into the outer peripheral edge of the lower surface of the base wall portion 6, and the area between the upward recess 27 and the inclined surface 15b of the step recess 15 is thinned to form an upper lateral weakening portion 28. The lower lateral weakened portion 21, the inclined connecting weakened portion 26 and the upper lateral weakened portion 28 are formed in sequence and continuous to each other, forming a circumferential tear line.

[0022] A finger hook recess 29 is recessed downward from the flat surface 15a of the stepped recess 15 over a predetermined range on the outer periphery of the outer periphery on the pouring side of the outer periphery of the outer periphery wall portion 8.

[0023] As shown in Figures 1 and 2, the support cylinder portion E1 is composed of a cylinder peripheral wall 30 that is suspended from the edge of the spout 4a of the upper wall 4, and an inward-facing flange-shaped bottom wall 31 that is provided at the lower end of the inner circumference of the cylinder peripheral wall 30 and opens inward, and the cylinder peripheral wall 30 has a plurality of side hole portions 32 that are liquid passage holes, and a fracture portion E2 is provided adjacent to the inner circumference of the flange-shaped bottom wall 31.

[0024] The insert rod portion E3 is connected to the inner circumference of the flange-shaped bottom wall 31 of the support tube portion E1 via a fracture portion E2 and is supported in a vertical position.The insert rod portion E3 is composed of a large-diameter insert portion 35 extending downward, an insertion portion 36 extending above the insert portion 35 with a reduced diameter, and a locking recess 37 formed in the lower part of the insert portion 35. In addition, the insert rod portion E3 is inserted into the inside of the sealing tube 42 of the top cover D described later, the upper surface of the insertion portion 36 abuts against the top wall 40 of the top cover D, and the lower end portion of the insert portion 35 is formed at a height that is the same as the lower end of the sealing tube 42 or slightly downward (at least blocking the inside of the sealing tube 42).

[0025] As shown in Figures 1 and 2, the top lid D is rotatably attached to the upper outer end of the outer wall portion 8 of the cap body B via a hinge C, and is provided with a top wall 40, a side wall 41 extending vertically from the periphery of the top wall 40, and a sealing tube 42 extending vertically from a predetermined position eccentric to the pouring side of the underside of the top wall 40 to seal the pouring tube 5. Most of the outer periphery of the sealing tube 42 of the top wall 40 is recessed from the underside and hollowed out, and a ring-shaped portion 43 is provided which allows the portion to deform.

[0026] As shown in FIG. 2(a), the lower part of the side wall 41 is provided with a thick wall portion 41a which protrudes inward leaving intermittent portions 44 at predetermined locations (in this embodiment, seven locations at 45° intervals excluding the center on the hinge C side), and the lower ends of the side wall 41 and the thick wall portion 41a are provided with engagement recesses 45 which are recessed from the inner periphery and engage with the lid engagement portion 11 to maintain the lid in the closed state. The engagement recess 45 has on its inward surface an outer fitting portion 46 that engages with the outside of the lid engagement portion 11 and the locking protrusion 13 when the lid is closed, and the downward surface 45a abuts against the upper surface of the lid engagement portion 11 and the upper surface of the rear side protrusion 12.The inner edge of the downward surface 45a, excluding the range above the range θ of the cutout portion 10 (the range of the hinge C), is provided with an inner fitting portion 47 cut out by the intermittent portion 44, where the side surface of the outer fitting portion 46 abuts against the upper inner circumference of the lid engagement portion 11. In this embodiment, since the inner fitting portion 47 is cut out, the thickness of the side peripheral wall 41 is formed to be thicker on the back side than on the pouring side from the viewpoint of strength.

[0027] An arc-shaped covering wall 48 is vertically attached to the pouring side outer edge of the underside of the side wall 41, and is formed so that its lower end is close to or abuts the flat surface 15a of the step recess 15 so as to cover the step recess 15 of the outer wall portion 8 of the cap body B when the lid is closed. A knob 49 having an arc shape is formed in the circumferential direction at the lower end on the pouring side (including the outer periphery of the covering wall 48) on the outer periphery of the side wall 41, and a hinge C is connected to the lower end on the back side.

[0028] The seal cylinder 42 has a locking projection 50 protruding from the lower inner periphery into which the outer periphery of the insert portion 35 of the insert rod portion E3 is inserted and slides, and which fits into the locking recess 37 for locking. In addition, as shown in Figure 1, a normal seal portion a is formed on the outer periphery of the sealing tube 42, which is inserted into the inner surface of the pouring tube 5 when the lid is closed to create a sealed state, and the lower outer periphery of the sealing tube 42 is reduced in diameter to provide a lower seal tube 42a, which is formed so that it is close to or in contact with the inner surface of the pouring outlet 4a in the upper wall 4 when the lid is closed, and a temporary seal portion b is formed between the lower seal tube 42a and the inner surface of the pouring outlet 4a.

[0029] The ring-shaped portion 43 is composed of a thin-walled portion 52 recessed to a predetermined depth from the underside of the top wall 40 except on the hinge C side, and a thickened portion 53 formed flush with the underside of the top wall 40 only on the hinge C side of the ring-shaped portion 43. It should be noted that the thickened portion 53 does not need to be strictly flush with the lower surface of the top wall 40 , and may be raised higher than the lower surface of the top wall 40 or may be recessed lower than the lower surface of the top wall 40 .

[0030] As shown in Figure 1(a), when the hinge cap is set in a closed state, the pressing jig T is formed of a ring-shaped concave wall with an opening in the center when viewed from below so that the ring-shaped downward surface portion 55 abuts against at least the peripheral edge of the upper surface of the top wall 40 of the top cover D that is free of the sealing tube 42 and the ring-shaped portion 43, and is hung down from the peripheral edge of the downward surface portion 55 and the inward surface portion 56 abuts against the outer peripheral surface of the upper end of the side peripheral wall 41, thereby fixing the top cover D of the hinge cap so that it does not move.

[0031] In order to prevent unauthorized opening of the hinge cap of this embodiment before use, a shrink label or sealing member, not shown, may be provided between the cap body B and the top lid D.

[0032] Next, the manner of use and the effects of this embodiment will be described. The hinge cap of this embodiment is integrally molded by setting the mold in an open state as shown in FIG. 2 and pouring synthetic resin into the mold.

[0033] The molded hinge cap has a top cover D that rotates via a hinge C to cover a cap body B, and closes the top cover D as shown in FIG. 1(a). When the lid is closed, the lower part of the outer circumferential surface of the seal tube 42 of the upper lid D comes into close contact with the lower inner circumferential surface of the pouring tube 5 of the cap body B to form a seal portion a. Furthermore, as shown in Figure 4, the downward surface 45a of the engagement recess 45 on the side wall 41 of the top lid D abuts against the upper surface of the locking protrusion 13 of the cap body B, and the outer fitting portion 46 and the inner fitting portion 47 of the engagement recess 45 sandwich the outer and inner surfaces of the locking protrusion 13, thereby maintaining the lid closed.

[0034] As shown in Figures 1 and 2, the inner fitting portion 47 protruding from the inner edge of the engagement recess 45 of the top cover D of the hinge cap of this embodiment is cut out and circumferentially provided at predetermined locations (in this embodiment, seven locations at 45° intervals excluding the center on the hinge C side) by the intermittent portion 44, so that creases or the like do not occur during molding, and the molding can be performed stably.

[0035] After closing the lid, in the hinge cap of this embodiment, as shown in FIG. 1(a), the top lid D is set and fixed on a pressing jig T, and then the insert rod portion E3 is pushed up using a jig or the like (not shown). Then, the breaking portion E2 connecting the insert rod portion E3 to the support tube portion E1 breaks, the insert rod portion E3 rises, and the insertion portion 36 of the insert rod portion E3 is guided into the seal tube 42 of the upper cover D, and then the insert portion 35 is inserted while sliding against the locking protrusion 50 inside the seal tube 42. Finally, as shown in FIG. 1(b), the upper surface of the insertion portion 36 abuts against the top wall 40 inside the sealing tube 42, stopping the upward thrust of the insert rod portion E3, and the locking recess 37 of the insert portion 35 engages with and locks into the locking protrusion 50 of the sealing tube 42, thereby sealing the inside of the sealing tube 42.

[0036] This prevents liquid from entering and accumulating inside the sealing tube 42 during use, and also leaves an opening on the inside of the flange-shaped bottom wall 31 as a mark left when the insert rod portion E3 separates from the flange-shaped bottom wall 31 of the support tube portion E1. In addition, since the insert rod portion E3 is inserted and retained within the sealing tube 42, the sealing tube 42 is prevented from collapsing inward, the shape of the sealing tube 42 is improved, and close contact with the pouring tube 5 can be maintained when the lid is closed.

[0037] In the hinge cap of this embodiment, the downward surface portion 55 of the pressing jig T is formed in a ring shape, and when set, it only abuts against the peripheral edge of the upper surface of the top wall 40 of the top lid D, and does not abut against the upper part of the ring-shaped portion 43 of the top wall 40 of the top lid D.Therefore, even if the insertion rod portion E3 is pushed up too far, the ring-shaped portion 43 will deform and the inner side of the ring-shaped portion 43 will lift up together with the sealing tube 42, thereby preventing the top lid D itself from moving within the pressing jig T, and once the pushing up is completed, the deformation of the ring-shaped portion 43 and the sealing tube 42 is returned to its original state.

[0038] Furthermore, as shown in FIG. 4, the outer and inner fitting portions 46 and 47 of the engagement recess 45 in the side wall 41 of the top lid D sandwich the outer and inner surfaces of the locking protrusion 13 of the cap body B. Therefore, when the cap body B is set in place or pushed up, it does not move or shift relative to the top lid D, and the cap can be set more stably.

[0039] When the hinge cap of this embodiment is closed and sealed and then a leak test is performed on the sealed seal, air is allowed to flow from below the support tube portion E1 of the cap body B and through the side hole portion 32 of the tube peripheral wall 30 of the support tube portion E1 and the opening in the flange-shaped bottom wall 31 toward the spout 4a. If there is a problem with the seal between the spout tube 5 of the cap body B and the seal tube 42 of the top lid D, the air that has leaked outward from the spout tube 5 will flow through the gap in the cutout portion 10, excluding the rear side protrusion 12 of the base wall portion 6 of the cap body B that abuts against the downward surface 45a of the engagement recess 45 of the top lid D. Since there is no inner fitting portion 47 formed on the rear side of the engagement recess 45, air is likely to escape to the outside from between the inward surface of the engagement recess 45 and the outer surface of the rear side protrusion 12 (forming an air passage), and therefore a poor seal can be determined.

[0040] Next, the closed hinge cap is attached to the mouth 1 of the container A filled with the liquid content. In the stoppering process, the mouth 1 of container A is placed into the annular groove formed between the inner tube 7 and outer peripheral wall 8 of the attachment portion 3, and a pressing force is applied from above the top lid D, causing the engaging protrusion 9 of the outer peripheral wall 8 to overcome the mating protrusion 2 of the mouth 1 and engage, so that the mouth 1 of container A is clamped between the outer periphery of the inner tube 7, the inner periphery of the outer peripheral wall 8, and the base wall 6 and attached. In addition, the outer and inner fitting portions 46 and 47 of the engagement recess 45 in the side wall 41 of the top lid D sandwich the outer and inner surfaces of the locking protrusion 13 of the cap body B, so that the top lid D and the cap body B do not move or become misaligned when plugging, and can be set more stably.

[0041] Furthermore, even if an impact force is applied to the top wall 40 of the upper lid D when the cap is closed and dropped upside down, the ring-shaped portion 43 absorbs the impact received by the upper lid D and does not push the sealing tube 42 into or pull it away from the pouring tube 5, so that the adhesion between the sealing tube 42 and the pouring tube 5 of the cap body B is not affected, and it is possible to prevent the sealing tube 42 and the pouring tube 5 from coming loose and the sealing tube 42 and the pouring tube 5 from damaging each other.

[0042] When using the liquid contents in container A, one inserts one's fingers into the finger hook recess 29 on the pouring side of the outer wall 8 of cap body B and hooks them around the gripping portion 49 of the top lid D to lift it up, which releases the seal between the sealing tube 42 of the top lid D and the pouring tube 5 of cap body B and disengages the side wall 41 of the top lid D from the base wall 6 of cap body B. The top lid D is opened and container A is tilted toward the pouring side, allowing the liquid contents in container A to flow through the side hole portion 32 of the peripheral wall 30 of the support tube portion E1 of cap body B and the opening in the flange-shaped bottom wall 31, into the pouring outlet 4a and be poured out from the pouring tube 5.

[0043] The hinge cap of this embodiment has a covering wall 48 provided on the pouring side outer edge of the underside of the side wall 41 of the top lid D, which hides the step recess 15 of the outer wall portion 8 of the cap body B when the lid is closed and prevents contact with the inside of the top lid D when the lid is opened, thereby keeping the inside of the cap clean.

[0044] By closing the top lid D again on the cap body B, the outer periphery of the sealing tube 42 of the top lid D comes into close contact with the inner periphery of the pouring tube 5 of the cap body B to form a seal, thereby sealing the inside of the container A, and the inner fitting portion 47 protruding from the inner edge of the engagement recess 45 of the top lid D is cut out and provided around the periphery by the intermittent portion 44, and each inner fitting portion 47 of the cut-out section is pushed open to the outside, so that there is no interference with closing, and the hinge cap can be used by repeatedly opening and closing the top lid D.

[0045] The hinge cap of this embodiment has a step recess 15 formed with a flat surface 15a and an inclined surface 15b on the pouring side of the outer wall portion 8 of the cap body B. Therefore, even if the contents drip from the lip portion 5a of the pouring tube 5 in the direction in which the container A is tilted during use into the lower step recess 15, the contents will flow to the flat surface 15a due to the inclination of the inclined surface 15b, and since the flat surface 15a is a flat surface without any bumps or irregularities, dirt can be easily wiped off with a tissue or the like.

[0046] Next, a mode in which the hinge cap is separately disposed of after the liquid content in the container A has been completely used will be described. In this case, the hinge cap is opened, and the top cover D is grasped with the fingers and pulled outward, whereby the rear outer wall portion 23, which is the connecting portion with the hinge C of the outer peripheral wall portion 8, is pulled via the hinge C, pulling and deforming the rear side of the connected outer peripheral wall portion 8. As the rear side of the outer peripheral wall portion 8 is pulled, the vertical weakened portion 17 formed by the outer peripheral cut portion 16 is broken.

[0047] When the top cover D is further pulled, the lower horizontal weakened portion 21 is cut in the circumferential direction from the end face 16a side connected to the vertical weakened portion 17, and then the continuous inclined connecting weakened portion 26 begins to break. When the lower lateral weakened portion 21 is cut and the fracture of the inclined connecting weakened portion 26 progresses, as shown in Figure 5, the upper cover D and the cap body B connected thereto are partitioned by the lower lateral weakened portion 21 and the inclined connecting weakened portion 26, and the lower side of the fractured outer peripheral wall portion 8 is separated from the cap body B.

[0048] Next, when the inclined connection weakened portion 26 is completely broken, the continuous upper horizontal weakened portion 28 is broken from the right end, and finally passes through the step recess 15 and is stopped by the thick portion 19. Furthermore, when the broken outer peripheral wall portion 8 is pulled, the thick portion 19 of the connected outer peripheral wall portion 8 is pulled outward, disengaging the engaging protrusion 9 of the outer peripheral wall portion 8 of the cap body B from the mating protrusion 2 of the mouth portion 1 of the container A, and when it is raised in this state, the upper side and its inner side of the outer peripheral wall portion 8 connected by the thick portion 19 are lifted and the cap body B is removed from the mouth portion 1 of the container A, so that the hinge cap and container A can be disposed of separately.

[0049] In the hinge cap of this embodiment, when the inclined connection weakened portion 26 is cut, the inclined connection weakened portion 26 is inclined from bottom to top to match the inclination of the bottom surface 20, so that the force pulling the lower portion of the outer wall portion 8 is directed upward and the force is easily applied. Also, since the inner parallel surface 25 forming the inclined connection weakened portion 26 moves away from the inclined surface 2a of the fitting protrusion 2 of the container A, there is less resistance to cutting, making it easier to break. In addition, when cutting the upper horizontal weakened portion 28 on the pouring side, the upward recess 27 on the inner surface of said portion is completely separated from the inclined surface 2a of the mating protrusion 2 of the container A, thereby further reducing the resistance to cutting and making it easier to break. [Industrial Applicability]

[0050] The hinge cap and hinge cap setting method of the present invention can suppress deformation of the top lid when the inserting rod portion on the cap body is pushed up and inserted into the sealing tube of the top lid, and can prevent the sealing tube of the top lid from going beyond the intended sealing position and penetrating too far below the pouring tube of the cap body, making it suitable as a hinge cap and hinge cap setting method for containers for storing food, etc. [Explanation of symbols]

[0051] A container B Cap body C Hinge D Top lid E1 Support cylinder part E2 Break E3 Insert rod part T holding jig a Seal part b Temporary seal α, β distance θ Range 1 Mouth 2 Mating protrusions 2a Slope 3. Mounting part 4 Upper wall 4a spout 5 Pour tube 5a Lip 6 Base wall part 7 Inner cylinder 8 Outer wall 8a Top 9 Engagement protrusion 10 Cutout 11 Lid engagement part 12 Rear protrusion 13 Locking ridge 15 Step recess 15a flat surface 15b Slope 15c sloped side 16 Outer periphery notch 16a End face 17 Vertical weakened area (longitudinal tear line) 18 Slit groove 19 Thick part 20, 20a, 20b, 20c bottom 21 Lower horizontal weakened area (circumferential tear line) 22 Connecting part 23 Rear outer wall 24 Contact surface part 25 Parallel Planes 26 Inclined joint weakened area (circumferential tear line) 27 Upward recess 28 Upper horizontal weakened area (circumferential tear line) 29 Finger recess 30 Cylinder wall 31 Flange-shaped bottom wall 32 Side hole 35 Insertion part 36 Insertion section 37 Locking recess 40 Top Wall 41 Side Wall 41a Thick wall 42 Seal tube 42a Lower seal tube 43 Ring-shaped part 44 Intermittent section 45 Engagement recess 45a Downward Face 46 Outer fitting part 47 Inner fitting part 48 Covered wall 49 Knob 50 Locking protrusion 52 Thin section 53 Flesh Part 55 Downward surface 56 Inward facing part

Claims

1. A hinge cap comprising: a cap body having an insert rod portion extending vertically from a lower portion of a pouring outlet having a pouring tube erected thereon through a breakage portion; and a top cover connected to the cap body through a hinge and having a seal tube that seals the pouring tube suspended from the underside of a top wall, The cap body has an attachment part that is attached to the mouth of the container, a lid engagement part that stands from the attachment part except on the hinge side, and a back side protrusion that stands from the attachment part on the hinge side, The upper cover has a side wall extending vertically from the periphery of the top wall, and an engagement recess formed in a lower portion of the side wall and adapted to engage with the cover engagement portion, the engaging recess has an outer fitting portion that fits with the outer side of the lid engaging portion, and an inner fitting portion that fits with the inner side of the lid engaging portion and at a distance in the circumferential direction except on the hinge side; This hinge cap is characterized in that when the insert rod portion is pushed up from below, the breaking portion breaks, the insert rod portion separates from the cap body, and is inserted into the sealing tube to seal the inner periphery of the sealing tube.

2. 2. The hinge cap according to claim 1, wherein the upper cover has a ring-shaped portion having a thin wall recessed from a lower surface of a top wall toward an outer periphery of the sealing tube.

3. A method for setting a hinge cap comprising: a cap body having a fitting rod portion extending vertically from a lower portion of a spout having a vertically extending spout tube through a breakage portion; and a top cover having a sealing tube that seals the spout tube and is connected to the cap body through a hinge and is suspended from the lower surface of a top wall, The upper edge of the closed lid is fixed to a clamping jig. A method for setting a hinge cap, comprising pushing up the insert rod portion from below, breaking the breaking portion, and inserting the insert rod portion detached from the cap body into the seal tube.

4. The upper cover has a side peripheral wall extending vertically from the peripheral edge of the top wall, The method for setting a hinge cap as described in claim 3, characterized in that the pressing jig has a ring-shaped downward surface portion that abuts against the upper surface of the top wall, and an inward surface portion that hangs down from the periphery of the downward surface portion and abuts against the outer peripheral surface of the upper end of the side wall.

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