Hinge cap

Abstract

To provide a hinge cap provided with a transfer stopper that is opened by its being transferred and held on an upper lid side when the lid is opened, the hinge cap being designed such that a content liquid adhering to a lower surface of the transfer stopper is prevented from dripping outside the sealed tube of an upper lid even if the content liquid adheres to the lower surface of the transfer stopper when the upper lid is opened.SOLUTION: A hinge cap including a cap body A mounted on a mouth 1 of a container body D and an upper lid B connected to the cap body A via a hinge C is characterized in that: the cap body A includes: a partition wall 5 that seals the mouth 1 of the container body D; a spouting cylinder 6 extended upward from the partition wall 5; and a transfer stopper 10 defined in the partition wall 5 in the spouting cylinder 6 by a breakable thin-walled weakened portion 8 and that is opened by its being transferred and held on an upper lid B side when the lid is opened; the transfer stopper 10 is connected to the partition wall 5 via the thin-walled weakened portion 8; and a bottom surface 19 includes a bottom wall 11 inclined downward from a side opposite the hinge C to a hinge C side.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a hinge cap that is used by being attached to a container body, and more particularly to a hinge cap having a transfer plug that breaks a thin-wall weakened portion at the first opening and moves to the upper lid side.

Background Art

[0002] Conventionally, in a hinge cap including a cap body attached to a container body and an upper lid connected to the cap body via a hinge, in order to ensure the sealing performance of the container body, a breakable thin-wall weakened portion is provided as a planned opening portion of a pouring outlet in a partition wall of the cap body, and an opening portion provided with a pull ring or the like is formed. However, in order to open the opening portion, after opening the upper lid, it is necessary to pull up a pull ring or the like to remove the opening portion, which is troublesome and causes problems for users with weak strength to have difficulty in opening.

[0003] Therefore, it is conceivable to eliminate the opening portion and open the pouring outlet in advance. However, in this case, since there is a problem with the sealing performance of the container body, the pull ring is omitted, and after forming a transfer plug as the opening portion, it is joined to the upper lid by ultrasonic adhesion or the like, and a hinge cap that breaks the thin-wall weakened portion by pulling up the transfer plug together with the opening of the upper lid and opens it has been conventionally known (see, for example, Patent Document 1).

[0004] Further, in the hinge cap described in Patent Document 1, since it is necessary to join the transfer plug to the upper lid by ultrasonic adhesion or the like after molding, by engaging a pulling portion erected on the transfer plug with a engaging portion suspended from the upper lid, a hinge cap that breaks the weakened portion by pulling up the transfer plug together with the opening of the upper lid is also known (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] However, with the hinge caps described in Patent Documents 1 and 2 above, when the container is shaken to mix the contents, which may have separated into oil and water or liquid and solid matter (such as sesame seeds or other ingredients) before use, the contents may adhere to the bottom surface of the transition stopper that has moved to the top lid. When the top lid is opened, the adhered contents may drip and contaminate the outside of the container. Furthermore, when using the liquid contents, if the container is tilted with the top lid open, the liquid contents adhering to the bottom of the transition stopper that has moved to the top lid will drip out, not only soiling the inside of the top lid, but also soiling the cap itself and the container if the lid is closed in that state.

[0007] The present invention aims to solve the above problems and provides a hinge cap equipped with a transition stopper that moves and is held on the upper lid side when opened, wherein even if the contents adhere to the bottom surface of the transition stopper by shaking the container body to agitate the contents before use, the contents adhering to the bottom surface of the transition stopper will not drip outside the sealing cylinder of the upper lid when the upper lid is opened. [Means for solving the problem]

[0008] To solve the above problems, the present invention provides a hinge cap comprising a cap body attached to the mouth of a container body and an upper lid connected to the cap body via a hinge, wherein the cap body comprises a partition wall that seals the mouth of the container body, a dispensing tube erected on the partition wall, and a transition stopper defined by a ruptureable thin-walled weakened portion within the partition wall of the dispensing tube, and securely coupled to the upper lid, and which moves and holds toward the upper lid side when the lid is opened, thereby opening the lid, wherein the transition stopper is connected to the partition wall via the thin-walled weakened portion, and the bottom surface has a bottom wall that slopes downward from the opposite side of the hinge toward the hinge sideTo prepare for this, after opening, if you shake the container with the lid closed to mix the contents, some of the contents may adhere to the bottom surface of the transfer stopper that is held in place by the lid. However, due to the downward slope, some of the contents adhering to the bottom surface of the transfer stopper will flow down the bottom surface and into the container body. The system employs a configuration characterized by the following features.

[0009] As specific embodiments of the hinge cap, the bottom wall is characterized by having an inverted inclined surface on the hinge side with an inverted slope opposite to the inclination of the bottom surface, the bottom wall is characterized by having an inclination angle of 3 to 35°, and the bottom wall is characterized by having an inclination angle of 5 to 20°. [Effects of the Invention]

[0010] The hinge cap of the present invention, by adopting the above configuration, After opening, Before use With the lid closed By shaking the container to agitate the contents, even if the contents adhere to the bottom of the transfer stopper, when the lid is opened, the contents adhering to the bottom of the transfer stopper will not drip outside the sealing cylinder of the lid. [Brief explanation of the drawing]

[0011] [Figure 1] This is a side cross-sectional view showing the state before opening, with the hinge cap, which is the first embodiment of the present invention, attached to the container body. [Figure 2] This figure shows the open state of a hinge cap immediately after manufacturing, which is the first embodiment of the present invention; (a) is a top view and (b) is a side cross-sectional view. [Figure 3] This is a bottom view showing the hinge cap, which is the first embodiment of the present invention, in the open state immediately after manufacturing. [Figure 4] This is a side cross-sectional view showing the hinge cap, which is the first embodiment of the present invention, in an open state with the cap removed. [Figure 5] The following photographs show the results of a comparative experiment in which the inclination angle of the bottom surface of the transition plug of the hinge cap, which is the first embodiment of the present invention, was changed: (a) is the state after the first stirring when the inclination angle was set to 0°, (b) is the state after the 10th stirring of (a), (c) is the state after the first stirring when the inclination angle was set to 6°, and (d) is the state after the 10th stirring of (c). [Figure 6]This is a side cross-sectional view showing the state before opening with the hinge cap, which is the second embodiment of the present invention, attached to the container body.

Mode for Carrying Out the Invention

[0012] Next, the hinge cap of the present invention will be described with reference to the drawings shown in the following embodiments. In the following description, as shown in FIG. 1, the left direction is defined as "front (opposite side to the hinge)", the right direction is defined as "rear (hinge side)", the upward direction is defined as "up", and the downward direction is defined as "down".

Embodiment

[0013] In FIG. 1, A is a cap body attached to the container body D, and B is an upper lid that connects and opens and closes the cap body A by a hinge C. An engaging ridge 2 is provided on the outer periphery of the mouth portion 1 of the container body D.

[0014] As shown in FIGS. 1 to 3, the cap body A is composed of a partition wall 5 that seals the mouth portion 1 of the container body D, a pouring cylinder 6 erected from the upper surface of the partition wall 5, and a mounting portion 7 that is attached to the mouth portion 1 and has the partition wall 5 formed inside.

[0015] The partition wall 5 is provided with a transfer plug 10 defined by a breakable thin-wall weakened portion 8 on the inner peripheral side of the pouring cylinder 6 for opening the pouring outlet during use. The transfer plug 10 includes a bottom wall 11 connected to the partition wall 5 via the thin-wall weakened portion 8. On the upper surface of the bottom wall 11, a substantially cylindrical pulling portion 12 is erected on the front side (opposite side to the hinge C), and a holding standing wall 13 is erected along the inside of the thin-wall weakened portion 8 on the hinge C side. The upper surface of the bottom wall 11 is formed flat, but it may also be an inclined surface inclined downward from the front side to the hinge C side.

[0016] In this embodiment, as shown in FIG. 2(a), the shape of the front end portion 11a of the bottom wall 11 on the front side is pointed so that the breakage of the thin-wall weakened portion 8 is facilitated. Similarly, the pulling portion 12 is also formed in a pointed shape on the front side. Also, although the holding vertical wall 13 is provided from the back side up to near the pulling-up part 12, the holding vertical wall 13 only needs to be provided at least around the rear end part 11b of the bottom wall 11 so as to suppress deformation (such as lifting) of the rear end part 11b of the bottom wall 11.

[0017] Furthermore, on the hinge C side of the pulling-up part 12, a reinforcing rib 14 is provided from its upper part toward the upper surface of the bottom wall 11. The shape of the reinforcing rib 14 may be any shape that can reinforce the hinge C side of the pulling-up part 12, and can be a triangular shape with a wider bottom wall 11 side, etc.

[0018] In this embodiment, on the upper surface of the pulling-up part 12, a mountain-shaped locking projection 16 is provided upward via a stepped part 15 so as to cover the pulling-up part 12. The locking projection 16 has a mountain shape with a thicker lower part and a thinner upper part. The upper surface of the locking projection 16 is planar in this embodiment, but it may be rounded. Also, the pulling-up part 12 has a recess 17 formed on its lower surface and is hollow, but it may be solid. Furthermore, the bottom wall 11 has a peripheral wall 18 formed on the outer peripheral side of the holding vertical wall 13 over the entire circumference of the thin-wall weakened part 8. The peripheral wall 18 forms a dike shape lower than the height of the holding vertical wall 13.

[0019] The bottom surface 19 of the bottom wall 11 is inclined (at an inclination angle θ1) with a downward gradient from the front end part 11a on the front side toward the rear end part 11b on the hinge C side. Due to this downward gradient inclination, the transfer plug 10 makes it easier for the content liquid adhering to the bottom surface 19 of the bottom wall 11 to flow down to the hinge C side.

[0020] The mounting part 7 includes an inner cylinder 20 vertically provided from the outer peripheral edge of the partition wall 5 and whose outer periphery is inserted into the inner periphery of the mouth part 1 of the container body D, an outer cylinder 21 whose inner periphery engages with the outer periphery of the mouth part 1, and an annular lid engaging part 22 connected at the upper end parts of the inner cylinder 20 and the outer cylinder 21. An outwardly protruding bulging part 23 is provided on the upper part of the lid engaging part 22. An engaging projection 24 is provided on the inner circumference of the outer cylinder 21, which engages with the engaging projection 2 provided on the outer circumference of the opening 1.

[0021] As shown in Figure 2, a roughly V-shaped outer peripheral notch 25 is cut into the outer peripheral surface of the outer cylinder 21 near either the left or right hinge C, and a slit groove 26 is recessed from above, starting from a position separated by the thin-walled portion at the upper part of the inner peripheral side of the outer peripheral notch 25, and extending over a predetermined range in the circumferential direction toward the hinge C. Therefore, when the container is disposed of, if the top lid B is pulled down via the hinge C, the outer peripheral cut portion 25 becomes a vertical tear line and the slit groove 26 becomes a circumferential tear line, causing the outer cylinder 21 to break circumferentially starting from the outer peripheral cut portion 25. The engagement between the engaging projection 24 of the broken portion and the opening 1 of the container body D is released, allowing the hinge cap to be easily detached from the container body D and disposed of separately.

[0022] As shown in Figures 1 to 3, the top cover B is rotatably attached to the upper outer circumference of the outer cylinder 21 of the cap body A via a hinge C, and comprises a flat top wall 30 and side circumferential walls 31 that hang down from the periphery of the top wall 30. The top wall 30 has a sealing cylinder 32 suspended from its lower surface, and a retaining wall 34 on the hinge C side inside the sealing cylinder 32. The sealing cylinder 32 is provided so that its outer circumference is in close contact with the inner circumference of the dispensing cylinder 6 of the cap body A, and the retaining wall 34 is provided so that its inner tip engages with or abuts against the upper outer end of the retaining vertical wall 13 of the transition plug 10. As shown in Figure 2, the top lid B has a recess α formed on the inside of the top wall 30 between the sealing cylinder 32 and the retaining wall 34, and a recess β formed between the side peripheral wall 31 and the sealing cylinder 32.

[0023] In this embodiment, the inner circumference of the retaining wall 34 is engaged with or in contact with the outer circumference of the retaining vertical wall 13. However, the outer circumference of the retaining wall 34 may also be engaged with or in contact with the inner circumference of the retaining vertical wall 13, and the tip surface of the retaining wall 34 may be engaged with or in contact with the upper end surface of the retaining vertical wall 13. Furthermore, the retaining wall 34 is vertically installed in at least the area where the retaining vertical wall 13 is erected. Furthermore, the retaining wall 34 has a contact rib 35 formed in the center of the hinge C side of its inner circumference, and the contact rib 35 is provided so as to be close to or in contact with the upper end of the retaining vertical wall 13 when the inner circumference of the retaining wall 34 engages with or comes into contact with the outer circumference of the retaining vertical wall 13 of the transition plug 10.

[0024] Furthermore, the top wall 30 has an engagement hole 36 on the front side inside the sealing cylinder 32, and a step is provided below the engagement hole 36 to provide a locking portion 33 that engages with the locking projection 16 at the top of the pull-up portion 12. As shown in Figure 2(b), the engaging portion 33 has an inclination on its inner circumferential surface to match the lower outer circumferential surface of the locking projection 16, and its lower surface 33a is in contact with or close to the stepped portion 15 of the pull-out portion 12 when the lid is closed. Furthermore, a locking projection 37 is provided on the upper surface of the stepped portion of the engagement hole 36.

[0025] In this embodiment, as shown in Figure 1, when the lid is closed, the upper part of the locking projection 16 protrudes through the engagement hole 36. Through a retaining process such as melting or ultrasonic bonding, the upper part of the locking projection 16 is expanded to fill the engagement hole 36, and the locking projection 16 is engaged by the locking projection 37 on the upper surface of the engagement portion 33. In this embodiment, a locking projection 16 is provided above the pull-up portion 12, and an engagement hole 36 is opened in the top lid B. When the lid is closed after molding, the upper part of the locking projection 16 is engaged with the engagement portion 33 by a retaining process. However, depending on the method of engaging the pull-up portion 12 of the transition plug 10 with the engagement portion 33 of the top lid B, it is not necessary to open an engagement hole 36 in the top lid B. For example, the locking projection may be provided on the lower surface of the top lid B and the engagement hole on the pull-up portion 12 for connection. Alternatively, the pull-up portion 12 may not be formed, and the engagement hole may be provided in the bottom wall 11 of the transition plug 10 for connection with the locking projection. Furthermore, an insertable component may be used, for example, by inserting the insertable component through the engagement hole 36 and connecting it with the transition plug 10 (pull-out portion 12). In short, any method is acceptable as long as it securely connects the transition plug 10 and the top cover B.

[0026] An arc-shaped knob 38 is provided on the lower outer circumference of the front side of the side circumferential wall 31. As shown in Figure 2(b), the lower end of the side circumferential wall 31 has a locking projection 39 that engages with the inner circumference of the lid engaging portion 22 of the cap body A, and an engaging recess 40 is provided in the center that engages with the bulging portion 23 of the lid engaging portion 22 to maintain the closed lid state.

[0027] In this embodiment, to prevent unauthorized opening before use, a shrink label or sealing member is provided between the cap body A and the top lid B, although this is not shown in the illustration.

[0028] Next, the usage and effects of this embodiment will be described. The hinge cap in this embodiment is manufactured by integral molding using injection molding with a mold. The hinge cap of this embodiment, manufactured by integral molding, is obtained in the open state as shown in Figure 2, and the top lid B is rotated via the hinge C to be brought into the closed state as shown in Figure 1. In this case, the locking projection 16 on the upper part of the pull-up section 12 is tapered at the top, so it easily fits into the engagement section 33, the upper part reaches the engagement hole 36, the lower outer circumference of the locking projection 16 fits into the inner circumference of the engagement section 33, and the lower surface 33a of the engagement section 33 abuts against or is close to the stepped section 15 of the pull-up section 12. Furthermore, the upper outer end of the retaining vertical wall 13 engages with or abuts against the lower inner end of the retaining receiving wall 34, and the upper end of the retaining vertical wall 13 abuts against or is close to the lower end of the abutment rib 35.

[0029] Furthermore, the sealing cylinder 32 is in close contact with the dispensing cylinder 6 to form a seal, and the lid engaging portion 22 of the cap body A and the locking projection 39 and engaging recess 40 of the upper lid B engage to form a closed lid. In this embodiment, when the lid is closed, the upper part of the locking projection 16 is treated to prevent it from coming off by melting or ultrasonic bonding, and as shown in Figure 1, the locking projection 16 is engaged with the engagement portion 33. Next, the closed hinged cap is pressed onto the opening 1 of the container body D, which is filled with the liquid.

[0030] When using the hinged cap of this embodiment for the first time, the top lid B can be opened by breaking the thin, weakened portion 8 provided in the partition wall 5 of the cap body A. First, when the top lid B is lifted by placing fingers on the knob 38, the bottom wall 11 on the front side is lifted, causing the thin-walled weakened section 8 on the front side to begin to break. Further lifting of the top lid B causes the breaking of the thin-walled weakened section 8 to progress towards the hinge C, and finally the thin-walled weakened section 8 near the hinge C breaks. The transition stopper 10 is removed from the partition wall 5 and then moved to the top lid B and held there, while the cap body A has a spout where the transition stopper 10 was removed from the partition wall 5, allowing the contents of the container body D to be poured out. After the transition stopper 10 is opened, closing the top lid B again causes the outer circumference of the sealing cylinder 32 of the top lid B to come into close contact with the inner circumference of the dispensing cylinder 6 of the cap body A, thereby sealing the inside of the dispensing cylinder 6.

[0031] In this embodiment, since a reinforcing rib 14 is provided on the hinge C side of the upper part 12, stress concentrates on the thin-walled weakened portion 8 on the front side, making it easier for the thin-walled weakened portion 8 to break. Furthermore, in this embodiment, the front end portion 11a of the bottom wall 11 on the front side is pointed, which makes it easier for stress to concentrate on the thin-walled weakened portion 8 on the front side.

[0032] In this embodiment of the hinge cap, when the contents are condiments such as dressings and sauces, if the container body D is shaken up and down with the lid closed to agitate the contents, the transition stopper 10 attached to the top lid B will have the contents adhering to the bottom surface 19 of the bottom wall 11. A portion of the contents adhering to the bottom surface 19 of the bottom wall 11 will flow down the bottom surface 19 into the container body D due to the downward slope from the front end 11a on the front side to the rear end 11b on the hinge C side.

[0033] Next, as shown in Figure 4, when the top lid B is opened, the transition plug 10 attached to the top lid B has a bottom wall 11 that slopes toward the hinge C side. However, the slope of the bottom surface 19 of the bottom wall 11 is reduced toward the hinge C side. As a result, some of the liquid remaining on the bottom surface 19 does not flow down into the recess β between the side peripheral wall 31 of the top lid B and the sealing cylinder 32, but can instead flow down into the recess α between the sealing cylinder 32 and the retaining wall 34. Furthermore, with the top lid B left open, tilting the container body D towards the front allows the liquid contents inside the container body D to be dispensed via the dispensing tube 6.

[0034] In this embodiment, in order to confirm the effect of the inclined bottom surface 19 of the transition stopper 10, two types of hinged caps were created with the inclination angle θ1 of the bottom surface 19 set to 0° and 6° in order to compare the degree of adhesion of the contents to the cap body A and the top lid B after stirring. For each hinged cap, an experiment was conducted to compare the state after the first stirring and after the tenth stirring. The liquid used in the experiment was barbecue sauce, and the hinge cap was for container body D with an inner diameter of 20 mm at the opening 1, and was made of LLDPE (linear low-density polyethylene) resin.

[0035] The results of this comparative experiment are shown in the photograph in Figure 5. Figures 5(a) to 5(d) show the container body D after being shaken up and down to agitate the contents, with the hinged cap opened. The left side is the cap body A, and the right side is the top lid B. According to this comparative experiment, as shown in Figures 5(a) and (b), when the inclination angle θ1 of the bottom surface 19 is 0°, after the first stirring (a), no liquid contents adhere to the outside of the dispensing tube 6 of the cap body A and the recess β on the outside of the sealing tube 32 of the top lid B. However, after the 10th stirring (b), a large amount of liquid contents adheres to the outside of the dispensing tube 6 of the cap body A and the recess β on the outside of the sealing tube 32 of the top lid B. In contrast, as shown in Figures 5(c) and (d), when the inclination angle θ1 of the bottom surface 19 is 6°, after the first stirring (c), it is natural that no liquid contents adhere to the outside of the dispensing tube 6 of the cap body A and the recess β on the outside of the sealing tube 32 of the top lid B. Furthermore, even after the 10th stirring (d), it can be seen that almost no liquid contents adhere to the outside of the dispensing tube 6 of the cap body A and the recess β on the outside of the sealing tube 32 of the top lid B. Based on the above experimental results, the inclination angle θ1 of the base surface 19 is ineffective when it is less than 2°, effective between 3° and 35°, and even more preferable between 5° and 20°.

[0036] Furthermore, in this embodiment, the transition stopper 10 is designed so that the outer circumference of the retaining vertical wall 13 engages with or abuts against the inner circumference of the retaining receiving wall 34 of the top lid B, and the rear end 11b of the bottom wall 11 is firmly held in place. As a result, the spout is closed by the bottom wall 11, and even if the container body D is tipped over or shaken violently, the rear end 11b of the bottom wall 11 is less likely to deform. This makes it difficult for the contents to enter through the gap between the bottom wall 11 and the partition wall 5. Even if the contents do enter through the gap between the bottom wall 11 and the partition wall 5, the retaining vertical wall 13 prevents the contents from flowing into the transition stopper 10. Therefore, even when the lid is opened again, contamination of the inside and outside of the container body D by the contents is suppressed.

[0037] Furthermore, in this embodiment, the retaining wall 34 of the top lid B has a contact rib 35 formed in the center of the hinge C side of its inner circumference. The contact rib 35 is provided so as to be close to or in contact with the upper end of the retaining vertical wall 13 when the inner circumference of the retaining wall 34 engages with or contacts the outer circumference of the retaining vertical wall 13 of the transition plug 10. Therefore, even if the top wall 30 of the top lid B is pushed in, it is possible to prevent the engagement or contact between the retaining vertical wall 13 and the retaining wall 34 from disengaging. In this embodiment, the contact rib 35 is provided in only one location on the retaining wall 34, but it may be provided in multiple locations. Furthermore, because the transition stopper 10 has a peripheral wall 18 that extends around the entire circumference of the bottom wall 11, even if the transition stopper 10 moves lower than before opening when the top lid B is closed after opening, it does not impair the closure of the spout. In addition, since the peripheral wall 18 is provided around the entire circumference of the bottom wall 11, it prevents the contents from entering the space between the transition stopper 10 and the top lid B.

[0038] In this embodiment, the hinge cap is attached to the container body D by pressing it in, but it may also be attached by screwing it in. Furthermore, although the thinned-wall weakened section 8 has the same thickness on the front side as on the hinge C side, it may be made thinner on the front side than on the hinge C side to make it easier to break. [Examples]

[0039] Next, a second embodiment in which the transition plug 10 of the cap body A is modified will be described. In the following description, components identical to those in the first embodiment will be denoted by the same reference numerals, and only the different components will be denoted by different reference numerals, with the differences being the main focus of the explanation.

[0040] As shown in Figure 6, Aa is the cap body that is attached to the container body D, and B is the top lid that connects to the cap body Aa by a hinge C and opens and closes. The cap body Aa consists of a partition wall 5 that seals the mouth 1 of the container body D, a dispensing tube 6 erected from the upper surface of the partition wall 5, and a mounting part 7 that is attached to the mouth 1 and has the partition wall 5 formed on its inner side.

[0041] The partition wall 5 is provided with a transition plug 50 defined by a breakable, thin-walled weakened section 8 on the inner circumference side of the dispensing cylinder 6, in order to open the dispensing outlet when in use. The transition plug 50 has a bottom wall 51 connected to the partition wall 5 via a thin-walled weakened portion 8. On the upper surface of the bottom wall 51, a substantially cylindrical pull-up portion 12 is erected on the front side, and a retaining vertical wall 13 is erected on the hinge C side along the inside of the thin-walled weakened portion 8.

[0042] The bottom wall 51 has a bottom surface 52 that slopes downward from the front side towards the hinge C side (angle of inclination θ1), and furthermore, the bottom wall 51 forms an inverted inclined surface 53 that slopes in the opposite direction to the inclination of the bottom surface 52, extending from the thinned and weakened portion 8 on the hinge C side toward the front side. The inverted inclined surface 53 of the bottom wall 51 is set such that the inclination angle θ2 is greater than the inclination angle θ1 of the bottom surface 52. In this embodiment, the upper surface of the bottom wall 51 is an inclined surface that slopes downward from the front side towards the hinge C side, but the upper surface of the bottom wall 51 may be flat, as in the first embodiment.

[0043] Next, the effects and benefits of this embodiment will be explained. In this embodiment of the hinge cap, as in the first embodiment, when the container body D is shaken up and down with the lid closed to agitate the contents, the transition stopper 50 attached to the top lid B will have the contents adhering to the bottom surface 52 and the inverted inclined surface 53 of the bottom wall 51. However, due to the inclination of the bottom surface 52 and the inverted inclined surface 53, some of the contents adhering to the bottom surface 52 and the inverted inclined surface 53 will flow down into the container body D.

[0044] Next, similar to the first embodiment shown in Figure 4, when the top lid B is opened, the transition plug 50 attached to the top lid B has a bottom wall 51 that slopes toward the hinge C side. However, the bottom surface 52 of the bottom wall 51 is less sloped toward the hinge C side, and the reverse slope surface 53 is sloped toward the fracture surface of the thin-walled weakened portion 8. Therefore, some of the liquid remaining on the bottom surface 52 and the reverse slope surface 53 does not flow down into the recess β between the side peripheral wall 31 of the top lid B and the sealing cylinder 32, but can flow down into the recess α between the sealing cylinder 32 and the retaining wall 34. Other effects and benefits are the same as in the first embodiment. [Industrial applicability]

[0045] The hinge cap of the present invention can be widely applied as a hinge cap for containers that store liquids that need to be stirred. For example, if the liquid contents adhere to the bottom surface of the transfer stopper by shaking the container body before use, when the top lid is opened, the liquid contents adhering to the bottom surface of the transfer stopper will not drip into the top lid or outside the container. [Explanation of Symbols]

[0046] A, Aa Cap body B Top lid C Hinge D Container body α, β recesses θ1, θ2 Tilt angle 1 Mouth 2. Engaging protrusions 5 Bulkhead 6 Pour tube 7 Mounting part 8 Thin weakened part 10, 50 transition plug 11, 51 Bottom wall 11a Front end 11b Rear end 12 Pull-out section 13 Retaining standing wall 14 Reinforcement Ribs 15 Step section 16 Locking projection 17 recess 18 Peripheral wall 19, 52 base 20 Inner cylinder 21 Outer cylinder 22 Lid engaging part 23 Bulge 24 Engagement protrusion 25 Outer circumference cut section 26 Slit grooves 30 Top Wall 31 Side wall 32 Closed Envelope 33. Attachment part 33a Bottom side 34 Retaining wall 35 Contact Rib 36 Engagement hole 37 Locking protrusion 38 picks 39 Locking projection 40 Engagement recess 53 Reverse slope

Claims

1. A hinged cap consisting of a cap body that is attached to the mouth of the container body and an upper lid that is connected to the cap body via a hinge, The cap body comprises a partition that seals the mouth of the container body, a dispensing tube erected on the partition, and a ruptureable thin-walled weakened portion defined within the partition inside the dispensing tube, and a transition stopper that is securely attached to the top lid and, when opened, moves and holds toward the top lid side for opening. The transition plug is connected to the partition wall via a thin-walled weakened section, and has a bottom wall whose bottom surface slopes downward from the opposite side of the hinge towards the hinge side. A hinged cap characterized in that, after opening, when the container body is shaken with the lid closed to agitate the contents, even if some of the contents adhere to the bottom surface of the transfer stopper that is held in place on the top lid, a portion of the contents adhering to the bottom surface of the transfer stopper will flow down the bottom surface and into the container body due to the downward slope.

2. The hinge cap according to claim 1, characterized in that the bottom wall has a reverse-sloping surface on the hinge side that has a slope opposite to the slope of the bottom surface.

3. The hinge cap according to claim 1 or 2, characterized in that the bottom wall has a bottom surface inclination angle of 3 to 35°.

4. The hinge cap according to claim 1 or 2, characterized in that the bottom wall has a bottom surface inclination angle of 5 to 20°.

Images