Hinge cap

Abstract

To provide a hinge cap capable of protecting a lid body from impact during inverted fall of a container, and stably sealing an inside of the container when closing a lid.SOLUTION: There is provided a hinge cap comprising a cap body A attached to a mouth part 1 of a container E, a lid body B attached to the cap body A through a hinge C, and a cover body D for covering the lid body B. The cap body A comprises: an attachment part 3 attached to the mouth part 1 of the container E; a base wall 4 for sealing an opening of the mouth part 1, that is extendedly formed from the attachment part 3; and a pouring cylinder 5 erected from the periphery of a pouring port passing through the base wall 4. The lid body B comprises: a side peripheral wall 20 continuously formed to the hinge C; a top wall 21 extendedly formed inward from the side peripheral wall 20; and a seal cylinder 27 for closely sealing the pouring cylinder 5 of the cap body A, that is erected from the top wall 21. The cover body D is formed of a material harder than the lid body B.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 does not require removal of the cap. [Background technology]

[0002] Conventionally, in hinge caps that comprise 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, a partition wall with a removable portion formed by a pull ring or the like has been provided at the intended opening portion of the cap body to ensure the sealing of the container. However, in order to open the removal section, it is necessary to open the lid and then pull a pull ring or the like to unplug the removal section, which is cumbersome and can be difficult for users with weak strength to open.

[0003] For this reason, hinge caps have been known in the past that do not require a partition with a removable portion, but instead have a separate stopper part that seals the dispensing tube of the cap body held in the lid body, so that the stopper and the lid body are removed from the dispensing tube together when the lid is opened, allowing the cap to open. Furthermore, as this type of cap, a hinge cap that is structured so that the sealing performance of the plug is not affected even when subjected to an impact such as being dropped upside down has also been known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-13830 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the hinge cap described in Patent Document 1, if the cap body and lid body are made of a soft synthetic resin and the stopper body is made of a synthetic resin that is harder than the cap body and lid body, the stopper body can be easily fitted into the inner circumference of the dispensing tube, improving airtightness.However, if the container is dropped upside down with the lid body facing downwards, the lid body is easily deformed by the impact, and even if the stopper body with the sealing tube is a separate part, there is a high possibility that this will affect the sealing between the cap body and the dispensing tube.Therefore, there is a problem that the lid body will be pressed into the cap body more than expected, crushing the dispensing tube, or the area where the dispensing tube and the stopper body are in contact will rub and create scratches, resulting in an incomplete seal.

[0006] The present invention aims to solve the above problems and to provide a hinge cap that protects the lid from impact when the container is dropped upside down and can stably seal the inside of the container when the lid is closed. [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 attached to the mouth of a container, a lid body attached to the cap body via a hinge, and a cover body covering the lid body, wherein the cap body comprises an attachment part attached to the mouth of the container, a base wall extending from the attachment part and sealing the opening of the mouth, and a pouring tube erected around a pouring outlet penetrating the base wall. a sealing member formed on the outer periphery of the mounting portion; The lid body has a side peripheral wall connected to the hinge, a top wall extending inward from the side peripheral wall, a sealing tube hanging down from the top wall and sealing the pouring tube of the cap body, a locking tube part standing up from the upper part of the side peripheral wall and holding the cover body, and a locking protrusion formed on the outer peripheral surface of the locking tube part, and the cover body has a top wall covering the upper part of the lid body, an outer peripheral wall hanging down from the peripheral edge of the top wall, and a locking fitting part on the inner periphery of the outer peripheral wall that fits with the locking protrusion of the locking tube part of the lid body. and a sealing engaging portion that engages with the sealing member. The cover body is made of a harder material than the lid body.

[0009] of the lid As a specific embodiment, The lid bodyThe cover body is provided with an inspection hole for leak inspection formed in the portion covered by the cover body. The hinge cap is also a hinge cap consisting of a cap body attached to the mouth of a container, a lid body attached to the cap body via a hinge, and a cover body that covers the lid body, wherein the cap body has an attachment part attached to the mouth of the container, a base wall extending from the attachment part and sealing the opening of the mouth, and a pouring tube erected around a pouring outlet that penetrates the base wall, and the lid body has side walls connected to the hinge, a top wall extending inward from the side walls, and a cover body that hangs down from the top wall and covers the container. The cap comprises a sealing tube that seals the dispensing tube of the cap body, a locking tube portion that stands upright from the top of the side peripheral wall and holds the cover body, a locking ridge formed on the outer surface of the locking tube portion, and an inspection hole for leak inspection that is formed in the part covered by the cover body, and the cover body has a top wall that covers the top of the lid body, an outer peripheral wall that hangs down from the peripheral edge of the top wall, and a locking fitting portion on the inner periphery of the outer peripheral wall that fits with the locking ridge of the locking tube portion of the lid body, and the cover body is made of a material that is harder than the lid body. [Effects of the Invention]

[0010] By adopting the above-mentioned configuration, the hinge cap of the present invention prevents the lid body from being pushed into the cap body even if a pressing force is applied to the cover body and lid body due to the impact received when the cap is dropped upside down while closed, as the impact is absorbed by the cover body, which is made of a material harder than the lid body.This does not affect the seal between the sealing tube of the lid body and the dispensing tube of the cap body, and therefore prevents the seal from coming off or the sealing tube and dispensing tube from damaging each other.

[0011] Furthermore, in the hinge cap of the present invention, the cap body is provided with a sealing member formed on the outer periphery of the mounting portion, and the cover body is provided with a sealing engagement portion that engages with the sealing member, so that the sealing member and the sealing engagement portion can be color-coded, and the open state can be visually confirmed at a glance by the change in color due to opening.

[0012] In addition, in the hinge cap of the present invention, the lid body is provided with an inspection hole for leak inspection formed in the part covered by the cover body, so that after the leak inspection, the cover body can be placed over the lid body to hide the inspection hole formed in the lid body so that it cannot be seen from the outside, and there is no risk of shower water being sucked in through the inspection hole after the contents are filled at high temperature. [Brief explanation of the drawings]

[0013] [Figure 1] 1A and 1B are diagrams showing a state in which a hinge cap according to an embodiment of the present invention is attached to a container, 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 according to the embodiment of the present invention when opened, in which (a) is a top view and (b) is a side cross-sectional view. [Figure 3]1A and 1B are diagrams showing a hinge cap according to an embodiment of the present invention in a closed state, in which FIG. 1A is a front view and FIG. 1B is a rear view. [Figure 4] 1A and 1B are diagrams showing the cap body and lid body constituting the hinge cap according to the embodiment of the present invention when set, where FIG. 1A is a top view and FIG. 1B is a side cross-sectional view. [Figure 5] 1A and 1B are explanatory views of a cover body constituting a hinge cap according to an embodiment of the present invention, in which (a) is a side cross-sectional view and (b) is a bottom view. BEST MODE FOR CARRYING OUT THE INVENTION

[0014] Next, the hinge cap of the present invention will be described with reference to the drawings by way of examples. In the following description, in FIG. 1, the upward direction is referred to as "upper", the downward direction is referred to as "lower", the rightward direction is referred to as "rear side" (hinge side), and the leftward direction is referred to as "front side" (opposite the hinge). [Example]

[0015] In FIG. 1, A is a cap body attached to a container E, B is a lid body attached to the cap body A via a hinge C so as to be able to open and close, and D is a cover body that covers the lid body B. The container E has a mouth 1 through which the liquid content flows, and a fitting ridge 2 is provided on the outer circumferential surface of the mouth 1.

[0016] The hinge cap of the present invention is preferably made of a soft synthetic resin such as linear low-density polyethylene as the material for the cap body A and lid body B, since a structure for separating the cap body A from the used container E is essential. Furthermore, the cover body D is preferably made of a synthetic resin such as polypropylene, which is harder than linear low-density polyethylene, in order to protect the lid body B from the impact of being dropped upside down.

[0017] As shown in Figure 1, the cap body A comprises an attachment part 3 that is attached to the mouth part 1 of the container E, a base wall 4 that extends inward from the upper inner end of the attachment part 3 and seals the opening of the mouth part 1, a dispensing tube 5 that stands upright around the spout that penetrates the base wall 4, a flow rate adjustment mechanism F that is connected to the bottom of the dispensing tube 5, and a sealing member G that is detachably connected to the front side of the attachment part 3.

[0018] As shown in FIG. 2, the pouring cylinder 5 has a stepped portion 5a formed by reducing the diameter of the inner circumferential side of the lower portion, and an opening surface 5b projecting below the stepped portion 5a. In addition, in this embodiment, the pouring tube 5 is formed so that the front side is higher than the back side, and the tip is flared like a trumpet, in order to make it easier to pour the liquid content.

[0019] The mounting portion 3 is provided with a locking protrusion 6 on its periphery and is composed of an annular lid engagement portion 7 that engages with the lid body B, an inner tube 8 that hangs down from the inner peripheral edge of the lid engagement portion 7, and an outer peripheral wall portion 9 that hangs down from the outer peripheral edge of the lid engagement portion 7. The outer peripheral wall 9 is provided with a sealing member G on the upper outer periphery on the front side, and an engaging protrusion 10 that engages with the engaging protrusion 2 of the mouth 1 of the container E on the lower inner periphery.

[0020] Near either the left or right side of the hinge C of the outer wall portion 9, as shown in Figures 2(a) and 3(b), an outer notch portion 11 that is approximately V-shaped in plan view is cut from above into the outer surface, leaving a thin bottom wall 12 at the lower end. At a position corresponding to the outer peripheral notch 11 of the engaging protrusion 10, an inner peripheral notch is cut in the vertical direction, not shown, to form a vertical tear line.

[0021] On the hinge C side of the outer peripheral cutout portion 11, a slit groove 14 is recessed from above so as to extend circumferentially from a position separated by a thin-walled portion at the upper part of the inner peripheral side of the end face 13 as its starting point, and in this embodiment, it extends over approximately 345° from the end face 13 as its starting point, and beyond that is a terminal connecting portion 15 where the outer peripheral wall portion 9 where the slit groove 14 does not exist and the lid engaging portion 7 are integrally connected. In addition, the starting point of the slit groove 14 adjacent to the vertical tear line is used as the tearing starting point, and a thin-walled connecting portion 17 is provided on the inner side of the bottom surface 16 of the slit groove 14 to connect the outer wall portion 9 and the lid engagement portion 7, so that the circumferential tear line is formed to extend in an arc shape and can be torn up to the unbreakable terminal connecting portion 15 at its end point.

[0022] In this embodiment, as shown in Figures 2(b) and 4(b), the base wall 4 is composed of a middle wall portion 4a extending from the upper end of the inner periphery of the mounting portion 3, a lower wall portion 4b extending inward one step below the inner end of the middle wall portion 4a, and an upper wall portion 4c rising above the inner end of the lower wall portion 4b and higher than the middle wall portion 4a.

[0023] As shown in Figures 2 and 4, the lid body B is rotatably attached to the upper outer end of the outer wall portion 9 of the cap body A via a hinge C, and is composed of a side wall 20 whose outer circumference is formed with approximately the same diameter as the inner circumference of the outer wall portion 9 except for the vicinity of the hinge C, and a top wall 21 extending inward from the upper inner end of the side wall 20. As shown in FIGS. 2 and 3(b), the side peripheral wall 20 has a large diameter portion 20a only on the rear side adjacent to the hinge C, the large diameter portion 20a being the same diameter as the outer peripheral wall portion 9 of the cap body A.

[0024] The side peripheral wall 20 is provided with a locking tubular portion 22 that stands upright from the top and holds a cover body D, which will be described later. The locking tubular portion 22 has a locking ridge 22a on its outer circumferential surface. Furthermore, the side peripheral wall 20 is provided at the lower end of the inner periphery with an engagement recess 23 that engages with the lid engagement portion 7 of the cap body A to maintain the lid in a closed state.

[0025] In this embodiment, as shown in FIG. 4, the top wall 21 is composed of a ring-shaped lower wall portion 24, a cylindrical wall portion 25 erected from the inner peripheral edge of the lower wall portion 24, and an upper wall portion 26 extending inward from the upper end of the cylindrical wall portion 25, and an inspection hole 26a for leak inspection is formed in the upper wall portion 26, as shown in FIGS. 2 and 4. The top wall 21 is provided with a sealing tube 27 that hangs down from the inner peripheral edge of the upper wall portion 26 and seals the dispensing tube 5 when the lid is closed, a central top wall 28 that is connected to the lower end of the inner peripheral edge of the sealing tube 27, and a middle foot tube 29 that hangs down from the underside of the lower wall portion 24 toward the middle wall portion 4a of the base wall 4.

[0026] As shown in Figure 1(b), the sealing tube 27 has a normal sealing portion a that is inserted into the inner surface of the dispensing tube 5 when the lid is closed to create a sealed state, and a lower sealing tube 27b that has a reduced diameter and a step portion 27a on the lower outer periphery of the sealing tube 27 is provided, and the lower sealing tube 27b is formed so that when the lid is closed, it is close to or abuts against the opening surface 5b that protrudes from the lower inner periphery of the dispensing tube 5, and another temporary sealing portion b is formed below the sealing portion a by the lower sealing tube 27b and the opening surface 5b.

[0027] The cap is sealed with two seals, the seal part a and the temporary seal part b, so even if one seal comes off due to an impact, the other seal will still seal and liquid will not leak. In addition, a space is provided between the step 27a of the sealing tube 27 and the step 5a of the dispensing tube 5, which serves as a liquid reservoir c to retain the contents when the lid body B is subjected to an impact due to being dropped, etc., and a small amount of contents enters the temporary seal portion b.

[0028] As shown in FIGS. 1 and 2, the cover body D has a top wall 30 that covers the top of the lid body B, and is hung from the peripheral edge of the top wall 30. Locking tube portion 22 As shown in Figures 3(b) and 5, the outer peripheral wall 31 has a notched recess 32 formed on the back side adjacent to the hinge C that engages with the large diameter portion 20a of the lid body B. Furthermore, a locking fitting portion 33 that fits onto the locking protrusion 22 a of the locking tubular portion 22 is provided on the inner periphery of the outer peripheral wall 31 and projects in the circumferential direction.

[0029] A knob 34 protrudes from the lower end of the outer periphery of the front side of the outer wall 31 in the circumferential direction, and the knob 34 is provided with a sealing engagement portion 35 that engages with the sealing member G described below when set and separates the sealing member G from the cap body A when the lid is opened. The sealing engagement portion 35 is suspended from the underside of the knob portion 34, and is provided with an insertion wall portion 36 formed in an arc shape so that its inner surface covers part of the outer periphery of the outer wall portion 9 of the cap body A when set, and a claw portion 37 formed at the bottom of the insertion wall portion 36 and having a wedge-shaped cross section.

[0030] As shown in FIGS. 2 and 3, the flow rate adjusting mechanism F has a peripheral wall 40 extending vertically from the opening surface 5b of the dispensing cylinder 5, and a bottom wall 41 extending inward from the lower end of the peripheral wall 40. The peripheral wall 40 is provided with a plurality of openings 42 formed in the shape of vertical slits at intervals in the circumferential direction. In this embodiment, the flow rate adjustment mechanism F is integrated with the cap body A, but the flow rate adjustment mechanism F can also be a separate body. In that case, a fitting portion can be provided at the bottom end of the dispensing tube 5, and the fitting portion can be fitted into a fitted portion provided at the top of the peripheral wall 40 of the flow rate adjustment mechanism F.

[0031] As shown in Figures 2 to 4, the sealing member G has a sealing wall 38 formed circumferentially at a predetermined distance from the outer peripheral surface of the outer peripheral wall portion 9, which is the front side of the mounting portion 3 of the cap body A, and the sealing engagement portion 35 is inserted from above into the space formed between the sealing wall 38 and the outer peripheral surface of the outer peripheral wall portion 9 when the hinge cap is set (closed). The sealing wall 38 is connected to the outer wall portion 9 at both ends via breakable weakened portions 39, and the circumferential width of the inner surface is formed to be slightly larger than the circumferential width of the insertion wall portion 36 of the sealing locking portion 35.In addition, it is formed to a length in the vertical direction that engages with the upper surface of the claw portion 37 of the sealing locking portion 35 when set from the upper end of the outer wall portion 9.

[0032] Next, the manner of use and the effects of this embodiment will be described. In the hinge cap of this embodiment, the cap body A and the lid body B are integrally molded in the open state, and then, when set, the lid body B is rotated in the closing direction relative to the cap body A via the hinge C, and as shown in Figure 4, the engagement recess 23 on the side wall 20 of the lid body B is engaged with the locking protrusion 6 of the lid engagement portion 7 of the cap body A, thereby closing the lid body B.

[0033] At this time, as shown in Figure 1(b), the lower outer periphery of the sealing tube 27 of the lid body B adheres to the inner periphery of the dispensing tube 5 of the cap body A, forming a sealing portion a, and the inner periphery of the lower sealing tube 27b at the lower outer periphery of the sealing tube 27 is close to or abuts against the opening surface 5b of the dispensing tube 5, forming a temporary sealing portion b. Furthermore, when the lid is closed, the middle tube 29 of the lid body B descends from the hinge C side toward the base wall 4 of the cap body A, and finally the middle tube 29 approaches or abuts against the upper surface of the middle wall portion 4a.

[0034] Next, to check the sealing condition of the seal portion a between the injection tube 5 of the cap body A and the seal tube 27 of the lid body B, a leak test is performed by supplying air under pressure from below the cap body A (or sucking air under negative pressure). In conventional leak testing of hinge caps, it was necessary to form a gap for testing, for example, between the lid engagement portion 7 of the cap body A and the engagement recess 23 of the lid body B. As a result, there was a risk of shower water being sucked in through the gap for testing after the contents were filled at high temperature. In contrast, in the hinge cap of this embodiment, even if the inspection hole 26a is provided in the top wall 21 of the lid body B, after the leak inspection, the top wall 21 in which the inspection hole 26a is provided can be covered with the cover body D, thereby making it possible to hide the inspection hole 26a and eliminating the risk of shower water being sucked in through the inspection hole 26a as in the conventional case.

[0035] In the leak test, if air passes through the test hole 26a provided in the upper wall portion 26 of the top wall 21, it is determined that the sealing condition of the seal portion a is poor, and conversely, if air does not pass through the test hole 26a, it is determined that the sealing condition of the seal portion a is good. The inspection hole 26a for leak inspection is not limited to the upper wall portion 26 of the top wall 21, and may be formed anywhere in the lid body B as long as it is covered by the cover body D and is a location through which air leaking from the seal portion a may pass. However, it is preferable to provide it in the lower wall portion 24, the tube wall portion 25, or the seal tube 27 (at a position above the seal portion a).

[0036] After the leak test is completed, when fitting the cover body D by pushing it in from above the lid body B shown in Figure 4, it is necessary to position the cutout recess 32 of the cover body D shown in Figure 5 so that it matches the large diameter portion 20a of the lid body B. When the cover body D is pushed in from above the lid body B, the locking fitting portion 33 of the cover body D descends while climbing over the locking protrusion 22a of the lid body B, and the cover body D is attached to the lid body B. It is attached.

[0037] At the same time as attaching it to the lid body B, the sealing engagement portion 35 hanging down from the knob portion 34 of the cover body D has its claw portion 37 slightly pushing apart the sealing wall 38 of the cap body A, and the insertion wall portion 36 is inserted into the space formed between the sealing wall 38 and the outer surface of the outer wall portion 9. In this embodiment, a slit groove 14 is recessed from the upper end surface of the outer wall portion 9, and the thickness of the upper wall of the outer wall portion 9 is thinner than that of the lower portion, so that the cap body A before being attached to the container E is prone to slight deformation when the claw portion 37 passes through the space. Finally, as shown in Figure 1, the inner side of the insertion wall portion 36 of the closure locking portion 35 is close to the outer peripheral surface of the outer wall portion 9 of the cap body A, the outer surface of the insertion wall portion 36 abuts or is close to the inner surface of the closure wall 38, and the upper surface of the claw portion 37 engages with the lower end surface of the closure wall 38, maintaining the closed state.

[0038] Next, as shown in FIG. 1, the closed hinge cap is attached to the mouth 1 of the container E filled with the liquid content. In the stoppering process, the mouth 1 of the container E is placed in the annular groove formed between the inner tube 8 and outer wall 9 of the attachment portion 3, and a pressing force is applied from above the cover body D, causing the engaging protrusion 10 of the outer wall 9 to overcome the mating protrusion 2 of the mouth 1 and engage, so that the mouth 1 of the container E is clamped between the outer periphery of the inner tube 8, the inner periphery of the outer wall 9, and the lid engagement portion 7, thereby attaching the container. In this embodiment, by providing the sealing member G, when the hinge cap is attached to a container E filled with hot liquid, even if the internal pressure of the cap body A increases, the central top wall 28 of the lid body B is pushed up, and the lid body B and the cover body D are not opened. Furthermore, in this embodiment, the top wall 21 is composed of a ring-shaped lower wall portion 24, a cylindrical wall portion 25 erected from the inner peripheral edge of the lower wall portion 24, and an upper wall portion 26 extending inward from the upper end of the cylindrical wall portion 25.This makes it possible to narrow the space formed between the base wall 4 of the cap body A and the top wall 21 when the lid is closed, thereby preventing the air in the space from expanding and causing the internal pressure to rise when the contents are filled at a high temperature.

[0039] In the container E fitted with the hinge cap of this embodiment, the cover body D is made of a harder material than the cap body A and the lid body B, so that the cover body D can withstand the impacts when the cover body D is capped from above or when the container is dropped upside down with the cover body D facing downwards. This prevents the side walls 20 and top wall 21 of the lid body B from deforming and the sealing tube 27 from being pushed into the dispensing tube 5, thereby maintaining stable closure and sealing of the hinge cap. To absorb impact, a space is provided between the cover body D and the top wall 21 (upper wall portion 26). As a result, when the cover body D receives an impact, the impact from the top wall 30 of the cover body D is less likely to be transmitted to the top wall 21 of the lid body B.

[0040] When the hinge cap is first opened to use the liquid content in the container E, the knob 34 of the cover body D is first lifted upward. When the knob 34 is lifted, the side wall 20 of the lid body B is softer than the outer peripheral wall 31, so the side wall 20 is lifted together with the outer peripheral wall 31 near the knob 34, and the lid body B is lifted together with the knob 34, with the hinge C as the fulcrum.

[0041] At that time, the lower claw portion 37 of the sealing engagement portion 35 hanging down from the underside of the knob portion 34 is also lifted upward, and accordingly, the lower portion of the sealing wall 38 of the sealing member G, which abuts against the outer surface of the insertion wall portion 36, is also lifted upward. At this time, the upper surface of the claw portion 37 abuts against and catches the lower end surface of the closure wall 38, so that the engagement between the closure wall 38 and the insertion wall portion 36 does not come off. Furthermore, when the sealing wall 38 is lifted, both ends of the sealing wall 38 are also lifted in conjunction, and force is applied to each of the weakened portions 39 connected to the outer wall portion 9 of the cap body A, causing at least one of the weakened portions 39 to break, and the sealing member G is separated from the cap body A.

[0042] As described above, when the hinge cap of this embodiment is first opened, the sealing member G can be separated from the cap body A at the same time as the cover body D and lid body B are opened by simply lifting the knob portion 34, and by visually checking whether the sealing member G is present or not, unauthorized opening can be prevented. In this case, since the cover body D and the cap body A are separate parts, they can be color-coded, and the change in color upon opening makes it possible to visually determine at a glance whether the cap has been opened. After the sealing member G is separated, the knob 34 can be easily lifted, and first the engagement between the engagement recess 23 of the side wall 20 near the knob 34 and the lid engagement portion 7 is released, and when the knob 34 is lifted further, the engagement between the engagement recess 23 of the other side wall 20 and the lid engagement portion 7 is released toward the rear side, and the hinge cap is opened.

[0043] In this embodiment, a flow rate adjusting mechanism F is provided on the opening surface 5b of the dispensing tube 5 of the cap body A, so that the liquid content in the container E is dispensed from the dispensing tube 5 with the flow rate adjusted. By providing a flow rate adjustment mechanism F, the pulsation of the liquid contents that occurs when the container E is suddenly tilted is alleviated, allowing the liquid to be poured out with a gradual change, preventing excessive leakage of the liquid contents. The openings 42 mainly function to adjust the flow rate, but the openings 42 on the rear side away from the pouring direction may also function to replace air.

[0044] By closing the cover body D and the lid body B again on the cap body A, the outer periphery of the sealing tube 27 hanging down from the top wall 21 of the lid body B comes into close contact with the inner periphery of the dispensing tube 5 of the cap body A, sealing the inside of the cap body A, and the cover body D and the lid body B can be opened and closed repeatedly for use even after the hinge cap is opened.

[0045] Even if the container E is turned over when the lid is closed, the flow rate adjustment mechanism F is provided at the bottom of the dispensing tube 5 of the cap body A, so the impact of the movement of the content liquid inside the container E hits the outside of the flow rate adjustment mechanism F, particularly the bottom wall 41, and does not reach the inside of the flow rate adjustment mechanism F, particularly the central top wall 28, and this prevents the hinge cap from opening due to the water hammer phenomenon when the container E is turned over.

[0046] The hinge cap of this embodiment has a separation mechanism, so that the liquid content in the container E can be separated and discarded from the opening 1 of the container E after all of the liquid has been used. In this case, the hinge cap is opened, and the cover body D and the lid body B are grasped with the fingers and pulled outward, causing the connecting portion of the outer wall portion 9 with the hinge C to be pulled and deformed, causing the vertical tear line to break along the outer circumferential notch portion 11, and when the cover body D and the lid body B are pulled further, the connecting portion 17 forming the circumferential tear line begins to break.

[0047] As the fracture of the connecting portion 17 progresses, the cover body D and the lid body B move away from the cap body A. Thereafter, the connecting portion 17 is completely cut up to the end of the slit groove 14, and when the cover body D and the lid body B are pulled further, the terminal connecting portion 15, which is integrally connected to the lid engagement portion 7 and the outer peripheral wall portion 9, is pulled outward, the fitting between the attachment portion 3 of the cap body A and the mouth portion 1 of the container E is released, and the hinge cap and container E can be disposed of separately. The separating mechanism may be any mechanism as long as it has a structure that allows the attachment portion 3 of the cap body A to be separated from the mouth portion 1 of the container E. [Industrial Applicability]

[0048] Even if a pressing force is applied to the cover body and lid body due to the impact received when the hinge cap of the present invention is dropped upside down while the lid is closed, the impact is absorbed by the cover body, which is made of a material harder than the lid body, preventing the lid body from being pushed into the cap body and not affecting the seal between the sealing tube of the lid body and the dispensing tube of the cap body.This makes the hinge cap suitable as a heat-resistant hinge cap, particularly for containers in which the contents are filled at high temperatures. [Explanation of symbols]

[0049] A Cap body B Lid body C hinge D Cover body E container F Flow rate adjustment mechanism G Sealing material a Seal part b Temporary seal c Liquid reservoir 1 Mouth 2 Mating ridges 3. Mounting part 4 Base wall 4a Middle wall 4b Lower wall part 4c Upper wall 5 Pour tube 5a Stepped section 5b Opening surface 6 Locking ridge 7 Lid engagement part 8 Inner cylinder 9 Outer wall 10 Engagement protrusion 11 Peripheral notch 12 Thin bottom wall 13 End face 14 Slit groove 15 End connection 16 Bottom 17 Connecting part 20 Side walls 20a Large diameter section 21 Ceiling wall 22 Locking tube 22a Locking protrusion 23 Engagement recess 24 Lower wall 25 Cylinder wall 26 Upper wall 26a Inspection hole 27 Seal tube 27a Stepped section 27b Lower seal tube 28 Central ceiling wall 29 Metatarsal 30 Top Wall 31 Outer wall 32 Notch recess 33 Locking fitting portion 34 Knob 35 Seal latch 36 Insertion wall 37 Claw 38 Sealing Wall 39 Weakened part 40 Peripheral wall 41 Bottom wall 42 Open hole

Claims

1. A hinge cap comprising a cap body attached to the mouth of a container, a lid body attached to the cap body via a hinge, and a cover body covering the lid body, The cap body includes an attachment part that is attached to the mouth of the container, a base wall that extends from the attachment part and closes the opening of the mouth, a pouring tube that stands around a pouring outlet that penetrates the base wall, and a sealing member that is formed on the outer periphery of the attachment part, The lid body includes a side peripheral wall connected to the hinge, a top wall extending inward from the side peripheral wall, a sealing tube extending down from the top wall and sealing the pouring tube of the cap body, a locking tube portion extending upright from the upper part of the side peripheral wall and holding the cover body, and a locking ridge formed on the outer circumferential surface of the locking tube portion, The cover body has a top wall covering the top of the lid body, an outer peripheral wall extending downward from the peripheral edge of the top wall, and a locking engagement portion on the inner periphery of the outer peripheral wall that engages with a locking protrusion of the locking tube portion of the lid body, and a sealing locking portion that engages with the sealing member, The hinge cap is characterized in that the cover body is formed of a material harder than the lid body.

2. A hinge cap as described in Claim 1, characterized in that the lid body has an inspection hole for leak testing formed in the part covered by the cover body.

3. A hinge cap comprising a cap body attached to the mouth of a container, a lid body attached to the cap body via a hinge, and a cover body covering the lid body, The cap body includes an attachment portion that is attached to the mouth of the container, a base wall that extends from the attachment portion and closes the opening of the mouth, and a pouring tube that extends from the periphery of a pouring outlet that penetrates the base wall, The lid body includes a side peripheral wall connected to the hinge, a top wall extending inward from the side peripheral wall, a sealing tube hanging down from the top wall and sealing the pouring tube of the cap body, a locking tube part standing upright from the upper part of the side peripheral wall and holding the cover body, a locking ridge formed on the outer circumferential surface of the locking tube part, and an inspection hole for leak inspection formed in the part covered by the cover body, The cover body includes a top wall covering the top of the lid body, an outer peripheral wall extending downward from the peripheral edge of the top wall, and a locking fitting portion on the inner periphery of the outer peripheral wall that fits with a locking protrusion of the locking cylindrical portion of the lid body; The hinge cap is characterized in that the cover body is formed of a material harder than the lid body.

Images