Hinge cap

Abstract

To provide a hinge cap having a structure easy to dry even if shower water for cooling enters from a gap for leak inspection.SOLUTION: The cap comprises a cap body B mounted on the mouth 1 of a vessel A and provided with a partition wall 4 for closing the opening of the mouth and a spout cylinder 5 erected from the periphery of a spout 4a penetrating through the partition wall, and a top wall 30 attached to the cap body through a hinge C and provided with a side peripheral wall 31 erected from the peripheral edge of the top wall and a side peripheral wall erected from the inner surface of the top wall. The cap body includes a gap 10a for leak inspection formed in a cutout portion 10 formed by cutting out a part of a lid engaging portion 6 on a hinge side from an upper surface of a partition wall, and a waterproof projecting portion 14 partitioning between the spout cylinder and the cutout portion on the upper surface of the partition wall and having an inclined surface 14c formed on the hinge side.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 is suitable for leak testing. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there has been known a non-removable hinge cap that includes a cap body that is attached to the mouth of a container and a lid body that is attached to the cap body via a hinge. With this type of hinge cap, after molding, the lid is closed and a sealing test (leak test) is performed to check whether the seal between the sealing tube and the dispensing tube is tight.In this case, a gap that serves as an air passage must be created in the outer airtight part between the lid body and the cap body, but there is a problem in that shower water used to clean the cap can enter the cap through this gap.

[0003] For this reason, the cap body is attached to the mouth of the container and comprises an attachment part having a lid engagement part that engages with the lid body, a partition wall extending inward from the attachment part and having an opening at the pouring outlet, and a pouring tube standing upright from the partition, the lid body comprises a top wall, side walls hanging down from the peripheral edge of the top wall, and a sealing tube hanging down from the inner surface of the top wall and sealing the pouring tube of the cap body, the cap body comprises a notch part formed by cutting out a part of the lid engagement part on the hinge side, and a back side protrusion standing up from the notch part and capable of abutting the lid body, and a hinge cap having a gap between the lid engagement part and the back side protrusion is known (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-166954 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the hinge cap described in Patent Document 1 has a problem in that after a high-temperature liquid content is filled, if shower water for cooling gets into the hinge cap, it takes a long time for the water to dry.

[0006] The present invention aims to solve the above problem and to provide a hinge cap that has a structure that allows it to dry easily even if cooling shower water enters through the gap used for leak inspection. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the present invention provides a hinge cap comprising: a cap body that is attached to the mouth of a container and has a partition wall that seals the opening of the mouth and a pouring tube that stands upright around the pouring outlet that penetrates the partition wall; and a lid body that is attached to the cap body via a hinge and has a top wall, side walls that hang down from the peripheral edge of the top wall, and a sealing tube that hangs down from the inner surface of the top wall and seals the pouring tube of the cap body, wherein the cap body has a configuration characterized in that it has a gap for leak inspection formed in a notch formed by cutting out part of the lid engagement part on the hinge side from the top surface of the partition wall, and a waterproof protrusion that separates the pouring tube on the top surface of the partition wall and has an inclined surface formed on the hinge side.

[0008] As an embodiment of the hinge cap, a configuration is adopted in which the waterproof protrusion has an inclined surface formed on the pouring side, and the inclined surface is gentler on the hinge side than on the pouring side, and the gentle inclined surface of the waterproof protrusion is formed so that the hinge side end is lower than the upper surface of the pouring side of the partition.

[0009] Furthermore, as a specific embodiment of the hinge cap, a configuration is adopted in which the waterproof protrusion has a linear apex that protrudes from the upper surface of the partition wall at a predetermined height, and the waterproof protrusion has a horizontal portion of a predetermined width that protrudes from the upper surface of the partition wall at a predetermined height, and a dam-shaped rib that protrudes from the upper surface of the horizontal portion. [Effects of the Invention]

[0010] By adopting the above-described configuration, the hinge cap of the present invention ensures an air passage for leak testing, and after molding, even if the hinge cap is plugged into a container with the lid closed and shower water is sprayed from the outside for cooling, sterilization, or cleaning, the shower water that has entered the cap can be quickly dried. [Brief explanation of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams showing a closed state of a container equipped with a hinge cap according to a first embodiment of the present invention, in which (a) is a side cross-sectional view and (b) is an enlarged view of a main part of (a). [Figure 2] 1A and 1B are diagrams showing the hinge cap of the first embodiment of the present invention in an open state, where FIG. 1A is a top view and FIG. 1B is a cross-sectional view taken along line XX in FIG. 1A. [Figure 3] 1A to 1C are top views showing an intermediate process of separating hinge caps from a container to which the hinge caps according to the first embodiment of the present invention are attached. [Figure 4] 10A and 10B are diagrams showing a closed state of a container equipped with a hinge cap according to a second embodiment of the present invention, in which (a) is a side cross-sectional view and (b) is an enlarged view of a main part of (a). [Figure 5] 10A and 10B are diagrams showing the hinge cap of the second embodiment of the present invention in an open state, where (a) is a top view and (b) is a cross-sectional view taken along line YY in (a). DETAILED DESCRIPTION OF THE INVENTION

[0012] 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(a), 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".

[0013] Example 1 In FIG. 1, A is a container, B is a cap body attached to the container A, and D is a lid body attached to the cap body B via a hinge C so as to be able to open and close. The container A has a mouth 1 at the top, and a fitting ridge 2 is provided on the upper outer periphery of the mouth 1.

[0014] As shown in Figures 1 and 2, the cap body B is composed of a partition 4 that abuts against the upper end surface of the mouth 1 and seals the opening, a pouring outlet 4a that penetrates the partition 4 at a position on the pouring side of the center O of the partition 4, a pouring tube 5 that stands upright around the pouring outlet 4a, an annular lid engaging portion 6 that is formed on the outer edge of the upper surface of the partition 4 and engages with the lid body D, an inner tube 7 that hangs down from the underside of the partition 4 and whose outer periphery is inserted into the inner periphery of the mouth 1, and an outer peripheral wall portion 8 whose upper end is connected to the outer periphery of the partition 4. 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 1 of the container A.

[0015] The lid engagement portion 6 has an arc-shaped lid engagement protrusion 11 erected from the center of the back side to both sides, leaving a notch 10 where the top surface of the partition wall 4 is cut out within a predetermined range, and within the notch 10, a back side protrusion 12 erected at the same height as the lid engagement protrusions 11, which are arranged with equal gaps 10a spaced from both ends of the lid engagement protrusion 11, and a locking protrusion 13 is provided on the outer periphery of the lid engagement protrusion 11.

[0016] The rear side protrusion 12 has an outer surface 12a that extends upward from inside the outer diameter of the lid engagement protrusion 11, and an abutting upper surface 12b that is flat from the upper end of the outer surface 12a toward the pouring side and has an inner end formed inside the diameter of the inner end of the upper surface of the lid engagement protrusion 11. In this embodiment, three rear-side protrusions 12 are provided in the cutout 10, one in the center and one on each side, with gaps 10a between them, and the gaps 10a between the rear-side protrusions 12 on both sides and the lid engagement protrusion 11 are made larger than the gap 10a in the center (to make it easier to drain shower water), but it is also possible to provide one in the center with wider gaps 10a on both sides, or to have a wider rear-side protrusion 12 with gaps 10a on both sides; the number of rear-side protrusions 12 is not important as long as the rear-side protrusions 12 are erected in the cutout 10 with gaps 10a between them.

[0017] As shown in Figures 1 and 2, on the upper surface of the partition 4, a waterproof protrusion 14 is formed at a position closer to the back side than the center O, perpendicular to the line XX extending from the center of the pouring side to the center of the back side, and both ends connected to the inside of the lid engagement protrusion 11 of the lid engagement portion 6.The waterproof protrusion 14 consists of a linear vertex 14a protruding from the upper surface of the partition 4 at a height α, an inclined surface 14b sloping downward from the vertex 14a toward the pouring side by a width β, and a gently sloping surface 14c extending downward from the vertex 14a toward the hinge C side, including within the cutout portion 10, by a width γ, and sloping gently so that the hinge C side end is lower by a height α than the upper surface of the pouring side of the partition 4. In this embodiment, the apex 14a protrudes at a height α of 0.2 mm from the upper surface of the dispensing side of the partition 4, and the hinge C side end of the gently sloping surface 14c from the apex 14a is set lower than the upper surface of the dispensing side of the partition 4 by a height α (0.2 mm) (the height from the apex 14a to the hinge C side end of the gently sloping surface 14c is 2α (0.4 mm)).Furthermore, since the waterproof protrusion 14 is formed such that the width γ on the back side is wider than the width β on the dispensing side overall, the inclination angle of the gently sloping surface 14c is gentler than that of the inclined surface 14b. The waterproof protrusion 14 may omit the inclined surface 14b on the pouring side and have only the gently inclined surface 14c on the hinge C side.

[0018] On the underside of the partition 4, there are provided a straightening cylinder 15 which extends cylindrically downward with a slightly reduced diameter from the outlet 4a of the partition 4, and a hanging cylinder 16 which is arranged next to the straightening cylinder 15 so as to be connected to the back side of the straightening cylinder 15, has a larger diameter than the straightening cylinder 15, and extends downward. The flow straightening cylinder 15 has a horizontal hole 17 that penetrates the inner periphery of the hanging cylinder 16 on the side of the peripheral wall facing the hanging cylinder 16, and the lower end of the hole 17 is closed by a bottom wall 18. The hanging cylinder 16 penetrates into the flow straightening cylinder 15 at a horizontal hole 17 on the pouring side, and has a notch 19 on the back side to open.

[0019] At the top of the outer peripheral wall portion 8, on the pouring side, there is provided a stepped recess 20 recessed from the outer periphery to a predetermined depth in an arc shape over an arc range of approximately 180°, and on the remaining back side, the upper surface is at the same height as the upper surface of the pouring side of the partition wall 4, and a hinge C is connected to the upper end of the outer periphery.

[0020] As shown in FIG. 2(a), a peripheral notch 21 having a generally V-shape in plan view is cut into the outer peripheral surface near the left of the hinge C of the outer peripheral wall portion 8 from the top surface, leaving a thin bottom wall at the lower end. At a position corresponding to the outer notch 21 of the engaging protrusion 9 on the inner periphery of the outer wall portion 8, an inner notch (not shown) is carved vertically, and the outer wall portion 8 in that portion is cut from the inside and outside, forming a vertical tear line 22 that thins the wall.

[0021] As shown in Figures 1 and 2, on the hinge C side of the outer peripheral cutout 21 on the back side of the outer peripheral wall 8, a slit groove 23 is recessed on the inside of the bottom surface, starting from a position separated by the thin-walled portion at the top of the inner peripheral side of the end face 21a, extending circumferentially (along the hinge C side) to the end of the step recess 20, forming a thin-walled circumferential tear line 23a between the inner peripheral wall 8 and the inner peripheral portion, and the opposite side of the hinge C of the outer peripheral cutout 21 of the outer peripheral wall 8 is a thick-walled portion 24 that extends to the end of the step recess 20. The outer portion of the outer peripheral wall 8 on the rear side of the slit groove 23 forms a rear outer wall 25, and a hinge C is provided at a predetermined position on the outer periphery of the rear outer wall 25.

[0022] As shown in Figures 1 and 2, the lid body 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 30, a side wall 31 that hangs down from the periphery of the top wall 30 and has the hinge C connected to its lower end on the back side, and a sealing tube 32 that hangs down from the inner surface of the top wall 30 and seals the pouring tube 5. The top wall 30 has a deformable thin-walled portion 33 recessed on the outer periphery of a sealing cylinder 32 on the lower surface.

[0023] An engaging recess 35 is provided around the inner periphery of the lower end of the side peripheral wall 31, which engages with the lid engaging protrusion 11 of the lid engaging portion 6 to maintain the lid in a closed state. The engagement recess 35 has an engagement portion 36 on its inward surface that engages with the engagement protrusion 13 of the lid engagement protrusion 11, and the downward surface 35a is configured to abut against the upper surface of the lid engagement protrusion 11 and the abutting upper surface 12b of the back side protrusion 12. In this embodiment, the downward surface 35a of the engagement recess 35 is adapted to abut against the abutting upper surface 12b of the rear projection 12, but this is not necessarily required and may be in close proximity. In addition, inside the engaging recess 35 of the side wall 31, except for the area facing the rear side protrusion 12, there are multiple engaging protrusions 37 arranged at intervals around the circumference which abut against the upper inner periphery of the lid engaging protrusion 11 when the lid is closed, thereby preventing the side wall 31 from spreading outward.

[0024] An arc-shaped covering wall 38 is vertically attached to the outer peripheral edge of the dispensing side of the underside of the side peripheral wall 31, and is formed so that its lower end is close to or abuts the concave surface of the stepped recess 20 so as to cover the stepped recess 20 of the outer peripheral wall portion 8 of the cap body B when the lid is closed, and a knob portion 39 is formed at the lower outer periphery of the dispensing side of the covering wall 38.

[0025] In order to prevent unauthorized opening of the hinge cap of this embodiment before use, a shrink label or sealing member, etc., may be provided between the cap body B and the lid body D, although this is not shown.

[0026] Next, the manner of use and the effects of this embodiment will be described. The hinge cap of this embodiment is first integrally molded in the state shown in FIG. 2, and then the cover body D is rotated via the hinge C to cover the cap body B, and the cap is closed as shown in FIG. At this time, the outer peripheral surface of the lower part of the sealing tube 32 of the lid body D comes into close contact with the inner peripheral surface of the lower part of the dispensing tube 5 of the cap body B to form a seal. Furthermore, the engaging recess 35 of the side peripheral wall 31 of the lid body D and the lid engaging protrusion 11 of the lid engaging portion 6 of the cap body B engage with each other, maintaining the lid closed.

[0027] When the hinge cap of this embodiment is closed and a leak test is performed on the seal between the dispensing tube 5 of the cap body B and the sealing tube 32 of the lid body D, air is flowed from below toward the dispensing outlet 4a of the cap body B, and if there is a defect in the seal between the dispensing tube 5 of the cap body B and the sealing tube 32 of the lid body D, the air leaking outward from the dispensing tube 5 flows through the gap 10a of the cutout portion 10 excluding the back side protrusion 12 of the cap body B that abuts against the downward surface 35a of the engaging recess 35 of the lid body D, and the air escapes to the outside from between the inward surface of the engaging recess 35 and the gap 10a and the outer surface 12a of the back side protrusion 12, making it possible to determine whether the seal is defective.

[0028] In this embodiment, the outer surface 12a of the rear side protrusion 12 of the cap body B is located inside the locking portion 36 of the engagement recess 35 of the lid body D, and the outer surface 12a of the rear side protrusion 12 and the locking portion 36 of the engagement recess 35 of the lid body D do not abut each other, forming a gap and making it easier for air to flow, but the locking portion 36 of the engagement recess 35 of the lid body D may also abut or fit into the outer surface 12a of the rear side protrusion 12.

[0029] Next, as shown in FIG. 1, 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 the container A is placed in the annular groove formed between the inner tube 7 and outer wall 8 of the cap body B, and a pressing force is applied from above the lid body D, causing the engaging protrusion 9 of the outer wall 8 to overcome the mating protrusion 2 of the mouth 1 and engage, so that the mouth 1 of the container A is clamped between the outer periphery of the inner tube 7, the inner periphery of the outer wall 8, and the underside of the outer edge of the partition 4, thereby attaching the container.

[0030] In the hinge cap of this embodiment, when the cap is closed, the downward surface 35a of the engagement recess 35 of the lid body D abuts against the upper surface of the lid engagement protrusion 11 of the cap body B and the abutting upper surface 12b of the back side protrusion 12, and further, the locking protrusion 37 located inside the engagement recess 35 abuts against and catches on the upper inner periphery of the lid engagement protrusion 11, thereby preventing the side wall 31 from spreading outward in response to the pressing force from above the lid body D. In particular, on the hinge C side of the lid body D, the hinge C prevents the side peripheral wall 31 from expanding outward, and the downward surface 35a of the lid body D abuts against the abutting upper surface 12b of the rear side protrusion 12 of the cap body B, thereby preventing deformation due to pressing force from above.

[0031] When the hinge cap of this embodiment is applied to a container A filled with hot liquid, the pressure inside the container A rises. However, since the top wall 30 has a deformable thin-walled portion 33 formed on the outside of the sealing tube 32, only the inner side of the thin-walled portion 33 of the top wall 30 rises, releasing the pressure outside the dispensing tube 5. This does not interfere with the engagement between the engagement recess 35 on the side wall 31 of the lid body D and the lid engagement portion 6 of the cap body B, and the lid is maintained closed, preventing the lid body D from opening due to an increase in internal pressure when the liquid is hot.

[0032] When shower water is sprayed from the outside to cool the high-temperature hinge cap, the air inside the lid body D cools from its high temperature, creating a negative pressure that tries to draw the shower water into the cap along with the air.Therefore, even if shower water passes through the gap 10a of the cutout portion 10 and enters the closed hinge cap, the structure is such that it dries easily, as will be explained below.

[0033] In this embodiment, the waterproof protrusion 14, whose apex 14a of height α protrudes from the upper surface of the pouring side of the partition 4 at a position closer to the back side than the center O of the partition 4 of the cap body B, is formed so as to separate the inside of the lid engagement portion 6, so that shower water that enters through the gap 10a of the cutout portion 10 has difficulty climbing over the apex 14a via the gently sloping surface 14c of the waterproof protrusion 14. However, in order to make it easier for shower water that has climbed over the waterproof protrusion 14 to return to the hinge C side during transportation or the like until the product is displayed in a store, an inclined surface 14b is provided from the apex 14a. In addition, the shower water that does not get over the apex 14a and remains on the gently sloping surface 14c flows gently due to the wide inclination of the gently sloping surface 14c with a width γ, and furthermore, since the lowest end is lowered by a height α, the flow does not stop and accumulate, but continues to flow gently, and the shower water that seeps in through the gap 10a of the cutout portion 10 is less likely to remain on the upper surface of the cutout portion 10, making it easier to dry. In experiments, when a conventional flat partition wall 4 was used without the waterproof protrusion 14, the number of days required for shower water that had entered through the gap 10a of the cutout portion 10 to dry varied widely from 2 to 6 days, but when the waterproof protrusion 14 of this embodiment was provided, the number of days required for drying varied little, from 2 to 3 days, and the water was able to dry quickly.

[0034] When the container is dropped upside down in the closed state, even if an impact force is applied to the top wall 30 of the lid body D, the thin-walled portion 33 absorbs the impact received by the lid body D and the sealing tube 32 is not pushed into or pulled away from the dispensing tube 5, so that the adhesion between the sealing tube 32 and the dispensing tube 5 of the cap body B is not affected, and the sealing tube 32 and the dispensing tube 5 are prevented from coming loose and from damaging each other.

[0035] When using the liquid contents in container A, by placing one's fingers on the handle 39 of lid body D and lifting it, the seal between the sealing tube 32 of lid body D and the dispensing tube 5 of cap body B is released, and the engagement between the side wall 31 of lid body D and the lid engagement part 6 of cap body B is released, lid body D is opened, and by tilting container A toward the dispensing side, the liquid contents in container A can be dispensed from the dispensing tube 5 through the dispensing outlet 4a of cap body B. In this case, when container A is tilted, the liquid content in container A passes through the inside of the hanging tube 16 on the underside of the partition 4, the horizontal hole 17 of the straightening tube 15, and the inside of the straightening tube 15 and the bottom wall 18, and reaches the pouring outlet 4a, and is then poured out of the pouring tube 5 through the pouring outlet 4a. During this process, the liquid content passes through the horizontal hole 17 of the flow straightening cylinder 15, causing it to flow in a direction that intersects the vertical direction once, but then passes through the inside of the flow straightening cylinder 15, whereby the flow is straightened in the vertical direction. Moreover, in this embodiment, the liquid content in container A passes through the hanging tube 16 before reaching the horizontal hole 17 of the flow straightening tube 15. Therefore, even if container A is forcefully tilted, for example, the flow of the liquid content is prevented from being disturbed, which makes it easier to pour the liquid content in the desired direction.

[0036] After dispensing, the container A is returned to its original tilt and the lid body D is closed again on the cap body B, so that the outer periphery of the sealing tube 32 of the lid body D adheres tightly to the inner periphery of the dispensing tube 5 of the cap body B, forming a seal and sealing the inside of the container A. The hinge cap can be used by repeatedly opening and closing the lid body D.

[0037] The hinge cap of this embodiment has a covering wall 38 on the outer peripheral edge of the pouring side of the underside of the side peripheral wall 31 of the lid body D, which hides the stepped recess 20 on the outer peripheral wall portion 8 of the cap body B when the lid is closed, and also prevents fingers placed under the knob portion 39 from hitting and coming into contact with the inside of the lid body D when the lid is opened, thereby keeping the inside of the cap clean.

[0038] Next, a mode in which the hinge cap is separately disposed of after the liquid content in the container A has been used up will be described. In this case, the hinge cap is opened, and the cover body D is grasped with the fingers and pulled outward, which pulls the back outer wall portion 25, which is the connecting portion of the outer wall portion 8 with the hinge C, via the hinge C, pulling the back side of the connecting outer wall portion 8 and deforming it from above. As the back side of the outer peripheral wall portion 8 is pulled, the vertical tear line 22 formed by the outer peripheral cut portion 21 is broken from above.

[0039] When the cover D is further pulled, the circumferential tear line 23a of the slit groove 23 is cut in the circumferential direction from the end face 21a side connected to the longitudinal tear line 22. As the rupture of the circumferential tear line 23a progresses, the lid body D and a part of the ruptured outer peripheral wall portion 8 of the cap body B connected thereto are separated from the cap body B as shown in FIG. When the outer peripheral wall 8 of that part is pulled, the engagement between the engaging protrusion 9 of the outer peripheral wall 8 and the engaging protrusion 2 of the mouth 1 of the container A is released, and when the container is lifted upward, the hinge cap is easily removed from the container A and can be disposed of separately.

[0040] Example 2 Next, a second embodiment in which the shape of the waterproof protrusion 14 of the cap body B in the first embodiment is changed will be described with reference to the drawings. In the following, the same components as those in the first embodiment are given the same reference numerals, and new reference numerals are given to changed components, and differences will be mainly described.

[0041] In FIG. 4, A is a container, Ba is a cap body attached to the container A, and D is a lid body attached to the cap body Ba via a hinge C so as to be able to open and close.

[0042] As shown in Figures 4 and 5, a waterproof protrusion 40 is formed on the upper surface of the partition 4 of the cap body Ba at a position closer to the back side than the center O, perpendicular to the line YY extending from the center of the pouring side to the center of the back side, and with both ends connected to the inside of the lid engagement protrusion 11 of the lid engagement portion 6.The waterproof protrusion 40 consists of a horizontal portion 40a of a predetermined width protruding from the upper surface of the partition 4 at a height α, an inclined surface 40b that slopes downward from the pouring side end of the horizontal portion 40a toward the pouring side by a width β, and a gently inclined surface 40c that slopes downward by a width γ from the back side end of the horizontal portion 40a, including within the cutout portion 10, toward the hinge C side, and is gently inclined so that the hinge C side end is lower by a height α than the upper surface of the pouring side of the partition 4. The waterproof protrusion 40 has a weir-like rib 41 formed on the upper surface of the horizontal portion 40a, protruding at a height δ. In this embodiment, the waterproof protrusion 40 protrudes at a height α of 0.2 mm from the upper surface of the dispensing side of the partition 4, and the hinge C side end of the gently sloping surface 40c is set lower by a height α (0.2 mm) than the upper surface of the dispensing side of the partition 4 (the height from the rear side end of the horizontal portion 40a to the hinge C side end of the gently sloping surface 40c is 2α (0.4 mm)).Furthermore, since the waterproof protrusion 40 is formed so that the width γ on the rear side is wider than the width β on the dispensing side overall, the inclination angle of the gently sloping surface 40c is gentler than that of the inclined surface 40b.Furthermore, the weir-shaped rib 41 protrudes at a height δ of 0.3 mm from the upper surface of the horizontal portion 40a (the height of the weir-shaped rib 41 is a height α + δ (0.5 mm) from the upper surface of the dispensing side of the partition 4). The waterproof protrusion 40 may omit the inclined surface 40b on the pouring side and have only the gently inclined surface 40c on the hinge C side.

[0043] In this embodiment, the waterproof protrusion 40 has a dam-like rib 41 protruding from the horizontal portion 40a so as to separate the inside of the lid engagement portion 6, so that shower water that enters through the gap 10a of the cutout portion 10 is less likely to overcome the dam-like rib 41 than the waterproof protrusion 14 of Example 1. In the event that shower water does overflow the weir-like rib 41, an inclined surface 40b is provided on the pouring side of the weir-like rib 41 so that it can easily return to the hinge C side before being displayed in a store (during transportation, etc.). Moreover, the shower water that does not go over the weir-like rib 41 and remains on the gently inclined surface 40c flows gently down the gently inclined surface 40c. Other functions and effects are the same as those of the first embodiment. [Industrial Applicability]

[0044] The hinge cap of the present invention ensures an air passage for leak testing, and after molding, when the hinge cap is fitted to a container with the lid closed, even if shower water is sprayed from the outside for cooling, sterilization or cleaning, the shower water that has entered the cap can be quickly dried, making it suitable as a hinge cap for hygienic containers for storing food, etc. [Explanation of symbols]

[0045] A container B, Ba cap body C hinge D Lid body α, δ height β, γ width 1 Mouth 2 Mating ridges 4 Bulkhead 4a spout 5 Pour tube 6 Lid engagement part 7 Inner cylinder 8 Outer wall 9 Engagement protrusion 10 Notch 10a Gap 11 Lid engaging protrusion 12 Rear protrusion 12a External surface 12b Contact top surface 13 Locking ridge 14, 40 Waterproof protrusion 14a Vertex 14b, 40b sloped surface 14c, 40c gentle slope 15 Rectifier tube 16 Hanging tube 17 Horizontal Cave 18 Bottom Wall 19 Cutout 20 Step recess 21 Peripheral notch 21a End face 22 Longitudinal tear line 23 Slit groove 23a Circumferential tear line 24 Thick part 25 Rear outer wall 30 Top Wall 31 Side wall 32 Closed Envelope 33 Thin-walled section 35 Engagement recess 35a Downward Face 36 Locking part 37 Locking convex piece 38 Covered wall 39 Knob 40a horizontal section 41 Weir-like rib

Claims

1. A hinge cap comprising: a cap body that is attached to the mouth of a container and includes a partition wall that closes the opening of the mouth and a pouring tube that stands upright around a pouring outlet that penetrates the partition wall; and a lid body that is attached to the cap body via a hinge and includes a top wall, side walls that hang down from the peripheral edge of the top wall, and a sealing tube that hangs down from the inner surface of the top wall and seals the pouring tube of the cap body, The cap body is a hinge cap characterized in that it has a gap for leak testing formed in a notch formed by cutting out a part of the lid engagement portion on the hinge side from the top surface of the partition, and a waterproof protrusion that separates the dispensing tube on the top surface of the partition from the notch and has an inclined surface formed on the hinge side.

2. The waterproof protrusion has an inclined surface formed on the pouring side, 2. The hinge cap according to claim 1, wherein the inclined surface is more gradually inclined on the hinge side than on the pouring side.

3. 3. The hinge cap according to claim 2, wherein the gently inclined surface of the waterproof protrusion is formed so that the hinge side end is lower than the upper surface of the pouring side of the partition wall.

4. 4. The hinge cap according to claim 1, wherein the waterproof protrusion has a linear apex that protrudes from the upper surface of the partition wall at a predetermined height.

5. A hinge cap as described in any one of claims 1 to 3, characterized in that the waterproof protrusion has a horizontal portion of a predetermined width that protrudes at a predetermined height from the upper surface of the partition wall, and a dam-shaped rib that protrudes from the upper surface of the horizontal portion.

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