Migration plug cap

Abstract

To provide a shift plug cap capable of restraining its contents from accumulating on a rear surface of a shift plug body shifted to a screw cap when a lid is opened.SOLUTION: A shift plug cap comprises an inside plug B mounted to a mouth part 1 of a container body A and a screw cap C detachably mounted by screwing to the inside plug B. The inside plug B comprises a pouring cylinder 10 and a shift plug body 12 which is continuously connected to an inner peripheral surface of the pouring cylinder 10 via a thin-walled weakened part 11 and on which a first engagement part 18 is formed in a circumferential direction. The screw cap C comprises: a top wall 40; a sealing tube part 43 hung down from the top wall 40 for sealing the pouring cylinder 10 at the outer periphery when a lid is closed; and a second engagement part 51 capable of engaging with the first engagement part 18 of the shift plug body 12. The shift plug body 12 comprises: a bottom wall 13 for blocking a spout inside the thin-walled weakened part 11; a cylindrical wall 14 raised from the bottom wall 13; and a ring-shaped gap α concaved on a lower outer periphery side of the cylindrical wall 14.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a transfer plug cap provided with an inner plug having a transfer plug body, and more particularly to a transfer plug cap that can be opened by rotating a screw cap in the opening direction.

Background Art

[0002] Conventionally, as a food container for storing contents such as dressings, the inside of the container body is sealed with an inner plug having a transfer plug body until it is opened, and a screw cap screwed onto the inner plug is rotated in the opening direction. Thus, a transfer plug cap is known that can remove the transfer plug body from the inner plug, hold the transfer plug body in the engaging portion of the screw cap, and open it (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the transfer plug cap described in Patent Document 1 above, by simply rotating the screw cap in the opening direction, the stress applied to the thin-wall weakened portion does not increase, and it can be opened with a reduced opening torque, and the hole diameter of the spout can be increased. However, after opening, a large recess (gap) is formed on the back surface of the transfer plug body transferred to the screw cap, so that the contents tend to accumulate, and there is a problem that the contents accumulated on the back surface of the transfer plug body are likely to drip when the screw cap is opened.

[0005] The present invention aims to solve the above problems, and provides a transfer plug cap that is attached to the mouth of a container body and includes an inner plug having a transfer plug body, and a screw cap that is screwed onto the inner plug and detachably attached thereto. When the lid is opened, the object is to provide a transfer plug cap that can suppress the accumulation of the contents on the back surface of the transfer plug body that is transferred to the screw cap.

Means for Solving the Problems

[0006] To solve the above problems, the present invention is a transfer plug cap that includes an inner plug attached to the mouth of a container body and a screw cap that is screwed onto the inner plug and detachably attached thereto. The inner plug includes a pouring cylinder and a transfer plug body that is continuously provided via a thin-wall weakened portion on the inner peripheral surface of the pouring cylinder, and a first engaging portion is formed in the circumferential direction. The screw cap includes a top wall, a sealing cylinder portion that hangs down from the top wall and seals the pouring cylinder at the outer periphery when the lid is closed, and a second engaging portion that can engage with the first engaging portion of the transfer plug body. The transfer plug body includes a bottom wall that seals the inner pouring outlet from the thin-wall weakened portion, a cylindrical wall that stands upright from the bottom wall, and a ring-shaped gap that is recessed on the lower outer peripheral side of the cylindrical wall. The shift plug body includes a plurality of gap ribs protruding radially from the outer peripheral surface of a cylindrical wall where a gap is formed. A configuration characterized by this is adopted.

[0007] As an embodiment of the transfer plug cap, the bottom wall of the transfer plug body includes a central bottom wall that seals the inner peripheral side of the lower end of the cylindrical wall, and a ring-shaped peripheral bottom wall that extends radially from the outer periphery of the cylindrical wall with a gap in between. The peripheral bottom wall is characterized by adopting a configuration that includes a ring-shaped annular wall that extends radially from the middle outer periphery of the cylindrical wall, an expanded diameter cylinder portion that hangs down from the outer edge of the annular wall, and a flange portion that extends outward from the lower outer periphery of the expanded diameter cylinder portion and is continuously provided with the thin-wall weakened portion. The transfer plug body is characterized by adopting a configuration that includes a columnar protrusion that stands upright from the center of the bottom wall and has a gate provided at the tip. Adopt 。

Effects of the Invention

[0008] By adopting the above configuration, after the screw cap of the transfer plug cap is rotated in the opening direction to be opened, it becomes difficult for the contents to accumulate on the back surface of the transfer plug body that is transferred to the screw cap, and it is possible to suppress the contents from dripping from the back surface of the transfer plug body when the lid is opened.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0010] Next, the transfer plug cap of the present invention will be described with reference to the drawings by giving examples. In the following description, with reference to FIG. 1, the upward direction is defined as "up", the downward direction is defined as "down", and the left and right directions are defined as the "radial direction".

Example

[0011] In FIG. 1, A is the container body, B is the middle plug attached to the container body A, and C is the screw cap that is screwed onto the middle plug B and is detachably attached. As shown in FIG. 1, the container body A is provided with a locking ridge 2 at the mouth portion 1 for fitting and retaining the middle plug B to prevent it from coming off.

[0012] As shown in FIGS. 1 and 2, the inner stopper B is composed of an outer cylinder 5 on the outer peripheral side, an inner cylinder 6 on the inner peripheral side, and an upper wall 7 located on the top surface side of the mouth portion 1, and has a mounting portion 4 that forms an annular groove into which the mouth portion 1 of the container body A is fitted, a screw wall portion 8 erected from the mounting portion 4, a top wall 9 extending inward from the upper end of the inner periphery of the screw wall portion 8, and a pouring cylinder 10 erected from the upper surface of the top wall 9.

[0013] The pouring cylinder 10 forms a pouring port for pouring the contents accommodated in the container body A on the inner peripheral side, and the upper part has an enlarged diameter and is curved outward. On the inner peripheral side of the lower end of the pouring cylinder 10, a transfer plug body 12 is integrally connected via a thin-wall weakening portion 11 formed over the entire circumference.

[0014] The transfer plug body 12 is composed of a bottom wall 13 that is continuously provided with a thin-wall weakening portion 11 on the outer periphery and seals the inner pouring port from the thin-wall weakening portion 11, and a cylindrical wall 14 erected from the inside of the bottom wall 13. The bottom wall 13 seals the inner peripheral side of the lower end of the cylindrical wall 14, and a circular central bottom wall 16 with a columnar protrusion 15 provided with a gate G at the tip erected from the center, and a ring-shaped peripheral bottom wall 17 extending in the radial direction across a gap α to be described later from the middle of the outer periphery of the cylindrical wall 14.

[0015] As shown in FIG. 2, on the outer periphery of the cylindrical wall 14, two wide outer teeth 18 constituting the first engaging portion are formed at positions 0° and 180° with respect to the axis. The wide outer teeth 18 include a first engaging surface 18a formed substantially in the radial direction that engages with the second engaging portion of the screw cap C to be described later, a first non-engaging surface 18b formed on the opposite side in the circumferential direction and inclined in the screwing direction from the outer peripheral surface of the cylindrical wall 14, and a cutout portion 18c formed in an arc shape along the cylindrical wall 14.

[0016] In this embodiment, the first engaging portion is embodied as the wide outer teeth 18 formed on the outer periphery of the cylindrical wall 14 of the transfer plug body 12. However, as long as the first engaging portion has unevenness that engages with the second engaging portion of the screw cap C in the circumferential direction of the transfer plug body 12, the number and structure are not limited.

[0017] The peripheral bottom wall 17 includes an annular wall 19 extending radially from the middle part of the outer periphery of the cylindrical wall 14, an enlarged-diameter cylindrical portion 20 hanging down from the outer edge of the annular wall 19 to the same height as the lower surface of the central bottom wall 16, a first engaging protrusion 21 constituting a first engaging portion provided around the upper part of the outer periphery of the enlarged-diameter cylindrical portion 20, and a flange portion 22 extending outward from the lower part of the outer periphery of the enlarged-diameter cylindrical portion 20 and connected to the thin-wall weakened portion 11.

[0018] Furthermore, a ring-shaped gap α surrounded by the lower outer peripheral surface of the cylindrical wall 14, the lower surface of the annular wall 19, and the inner peripheral surface of the enlarged-diameter cylindrical portion 20 is formed on the lower surface of the transition plug body 12. A plurality of (eight in the embodiment) gap ribs 23 project radially from the outer peripheral surface of the cylindrical wall 14 into the gap α. The gap ribs 23 of this embodiment are vertical ribs, but as long as the volume of the gap α can be reduced, the position where the ribs are provided and the shape of the ribs are not limited as long as they are within the gap α.

[0019] As shown in FIGS. 1 and 2, on the lower end surface of the pouring cylinder 10 and the lower surface of the flange portion 22 located outside and inside the thin-wall weakened portion 11, outer concave grooves 24 and inner concave grooves 25 are formed at two locations facing each other over a predetermined angular range. As shown in FIGS. 2(a) and 3, to explain the predetermined angular range, the angle on the extension of the first engaging surface 18a of the wide outer teeth 18 of the transition plug body 12 is set to 0°, and this 0° is also the break start position of the thin-wall weakened portion 11. When the angle from the break start position in the screwing direction of the screw cap C is θ, the outer concave groove 24 and the inner concave groove 25 are formed in the range where the angle θ is from 30° to 60°. By providing the outer concave groove 24 and the inner concave groove 25 within this range, the stress applied to the thin-wall weakened portion 11 does not increase, and the opening torque can be reduced. Note that the outer concave groove 24 and the inner concave groove 25 may not be provided.

[0020] The threaded wall portion 8 is vertically provided from the outer peripheral edge of the top wall 9 continuously connected to the inner peripheral edge at the lower part of the pouring cylinder 10, and a male thread 26 constituting a first threaded portion is provided on the outer peripheral surface. As shown in Fig. 2, the male screw 26 is composed of an inclined upper surface 26a formed with a steep inclination on the upper surface and a flat lower surface 26b formed flat, unlike a normal thread cross-section. As shown in Fig. 2(a), the upper end of the male screw 26 is formed with two threads starting at 180° intervals. In this embodiment, the male screw 26 has two threads, but it can be a multi-threaded screw with three or more threads according to the height of the screw wall portion 8.

[0021] On the inner peripheral surface of the screw wall portion 8, a plurality (three in this embodiment) of reinforcing ribs 27 extending axially with the upper part connected to the top wall 9 are arranged. As shown in Fig. 2, a stepped portion 28 recessed on the outer peripheral side is provided at the peripheral edge of the top wall 9, and sound-emitting protrusions 29 are arranged at two positions at 180° intervals on the inner peripheral side of the stepped portion 28.

[0022] The mounting portion 4 forms a fitting groove into which the mouth portion 1 of the container body A is inserted by the outer cylinder 5, the inner cylinder 6, and the upper wall 7. On the inner periphery of the outer cylinder 5, a locking reduced-diameter portion 30 is provided to engage with the locking protrusion 2 of the container body A to prevent the mouth portion 1 from coming off. As shown in Fig. 2, stoppers 31 are provided at two positions in the circumferential direction on the upper surface of the upper wall 7.

[0023] A notch recess 32 is recessed in the outer cylinder 5 in the radial direction from the outer peripheral surface over the circumferential direction, and a separation mechanism F is provided at the lower part of the notch recess 32 to separate the middle plug B from the container body A for separate disposal. As shown in Figs. 2 and 3, the separation mechanism F is provided with a gripping portion 34 through a slit 33 formed axially over a predetermined arc range on the lower outer peripheral surface of the outer cylinder 5. The gripping portion 34 is separated from the outer cylinder 5 by a thin vertical cutting portion 35 and can be unfolded outward.

[0024] As shown in Fig. 2(b), a hooking recess 36 for putting a fingertip in and hooking it is formed in the right direction from the vertical cutting portion 35 of the gripping portion 34. The slit 33 extends from the longitudinal cutting portion 35 in the direction opposite to the gripping portion 34 to the starting end portion 33a, and at the other end portion, i.e., the terminating end portion 33b, the gripping portion 34 is integrated with the outer cylinder 5. In this embodiment, the slit 33 is formed over an arc range of about 120°. Among the slit 33, from the starting end portion 33a to the intermediate portion 33c adjacent to the hooking recess 36, it penetrates in the vertical direction, and the portion from the intermediate portion 33c to the terminating end portion 33b is connected by a thin wall so as to be easily breakable.

[0025] The lower part including the locking reduced diameter portion 30 of the outer cylinder 5 adjacent to the terminating end portion 33b of the slit 33 is cut out in the radial direction, and a breakable thin wall starting break portion 37 is formed between the outer cylinder 5 and the gripping portion 34. Further, on the extension of the terminating end portion 33b of the slit 33, a slit 49 extending between the thick wall connecting portions 39 to be described later is formed. In the notch recess 32 of the outer cylinder 5, a breakable thin wall circumferential cutting portion 38 extending from the terminating end portion 33b of the slit 33 in the back direction to the inner peripheral side of the outer cylinder 5 near the starting end portion 33a, and a thick wall connecting portion 39 of thick wall where most of the portion between the end portion of the circumferential cutting portion 38 and the terminating end portion 33b faces the gripping portion 34 are formed.

[0026] As shown in FIGS. 1 and 4, the screw cap C includes a disc-shaped top wall 40 and an outer peripheral wall 41 vertically provided from the outer peripheral edge of the top wall 40. On the inner surface of the top wall 40, in order from the inside, a sealing cylinder portion 43 and a screw cylinder portion 44 are vertically provided integrally with the top wall 40. Further, between the sealing cylinder portion 43 and the screw cylinder portion 44, sound generating members 45 are arranged at two locations at 180° intervals on the concentric circle.

[0027] The sealing cylinder portion 43 includes, when closed, a seal portion 50 whose outer periphery abuts against the inner peripheral surface of the pouring cylinder 10 to seal the pouring port, and a narrow inner tooth 51 that extends radially from the inner peripheral surface of the sealing cylinder portion 43 and constitutes a second engaging portion that engages with a wide outer tooth 18 that constitutes a first engaging portion of the transfer plug body 12. The narrow inner teeth 51 are provided at two locations in the circumferential direction, the same number as the wide outer teeth 18. When the narrow inner teeth 51 are opened, when the screw cap C is rotated in the lid-opening direction, the narrow inner teeth 51 have a substantially radially extending second engaging surface 51a that engages with the first engaging surface 18a of the wide outer teeth 18 of the transfer plug body 12, and a second non-engaging surface 51b that is formed on the opposite side in the circumferential direction and is inclined in the screwing-off direction from the inner circumferential surface of the sealing cylinder portion 43.

[0028] In this embodiment, the second engaging portion is embodied as the narrow inner teeth 51 extending radially from the inner circumferential surface of the sealing cylinder portion 43. However, the second engaging portion is not limited to the sealing cylinder portion 43 and can be provided on the screw cap C (for example, vertically provided from the top wall 40). As long as it has irregularities that engage with the first engaging portion of the transfer plug body 12, the number and structure are not limited, similar to the first engaging portion.

[0029] Furthermore, the sealing cylinder portion 43 extends to the point where the annular second engaging protrusion 48 that constitutes the second engaging portion formed on the inner circumference of the tip tightly fits onto the outer circumferential surface of the expanded diameter cylinder portion 20 by overcoming the first engaging protrusion 21 formed on the transfer plug body 12.

[0030] The screw cylinder portion 44 is provided with an internal thread 55 that constitutes a second thread portion that screws into the male thread 26 of the middle plug B on the inner circumference. As shown in FIG. 4(a), the internal thread 55 is not vertically symmetric in cross-section like a normal thread, but is composed of a flat upper surface 55a formed flat on the upper surface and an inclined lower surface 55b formed with a steep inclination on the lower surface. As shown in FIG. 4(b), the lower end portion of the internal thread 55 is formed with two threads starting at 180° intervals. Note that, as described above, the internal thread 55 can be a multi-thread of three or more threads corresponding to the male thread 26.

[0031] On the lower end surface of the screw cylinder portion 44, wedge-shaped recesses 56 that engage with the stopper 31 are formed at two locations in the circumferential direction. The stopper 31 and the wedge-shaped recesses 56 are provided at two locations in the circumferential direction in this embodiment, but are not limited thereto and can be provided at an appropriate plurality of locations.

[0032] The sound emitting member 45 is composed of a rigid plate-shaped base portion 57 vertically provided from the lower surface of the top wall 40, and a rod-shaped vibrating piece 58 vertically provided from the base portion 57 and formed to be elastically deformable. Just before the tightening of the screw cap C is completed, the tip of the vibrating piece 58 abuts against the sound emitting protrusion 29 of the middle plug B, and the tightening proceeds while bending and deforming the vibrating piece 58. At the same time as the tightening is completed, the vibrating piece 58 gets over the sound emitting protrusion 29 and tries to restore itself, so that it vibrates and generates sound. In this embodiment, the base portion 57 is arranged in two portions at 180° intervals on a concentric circle, but the base portion 57 may be continuous in a ring shape.

[0033] Next, the usage mode and operation effects of this embodiment will be described. As shown in FIG. 2, the transition plug cap of this embodiment is formed by injecting resin from a gate G provided at the tip of the columnar protrusion 15 when molding the middle plug B. To attach the middle plug B to the container body A, the screw cap C is screwed on from the upper part of the middle plug B. After setting the middle plug B and the screw cap C, the mounting portion 4 of the middle plug B is applied to the mouth portion 1 and then screwed on.

[0034] When the screw cap C is screwed on and set from the upper part of the middle plug B, the circumferential positions of the middle plug B and the screw cap C may be temporarily aligned by a mark or the like (not shown) and placed. However, in the case of this embodiment, when the screw cap C is placed so as to be aligned with the axis of the middle plug B without performing prior temporary positioning, since the middle plug B and the screw cap C are not temporarily positioned, the lower surface of the narrow inner teeth 51 of the sealing cylinder portion 43 of the screw cap C abuts against the upper surface of the wide outer teeth 18 of the transition plug body 12, and it is highly likely that it will not be inserted between the wide outer teeth 18. In this case, the female screw 55 of the screw cap C is in a state of not abutting against the male screw 26 of the middle plug B.

[0035] Thereafter, with no load applied to the screw cap C, by rotating the screw cap C in either the left or right direction by up to 180°, the narrow inner teeth 51 of the sealing cylinder portion 43 reach a position between the two wide outer teeth 18. Thus, the second engaging surface 51a of the narrow inner teeth 51 and the first engaging surface 18a of the wide outer teeth 18 face each other, and the second non-engaging surface 51b of the narrow inner teeth 51 and the first non-engaging surface 18b of the wide outer teeth 18 face each other, allowing the two narrow inner teeth 51 to be inserted between the two wide outer teeth 18.

[0036] From this state, when the screw cap C is pushed into the middle plug B, the female thread 55 of the screw cap C rides over the male thread 26 while the inclined lower surface 55b is in sliding contact with the inclined upper surface 26a of the male thread 26, and the screw cylinder portion 44 of the screw cap C comes to fit onto the screw wall portion 8 of the middle plug B. At this time, the second engaging protrusion 48 of the sealing cylinder portion 43 rides over the first engaging protrusion 21 formed on the transfer plug body 12 of the middle plug B and comes to fit onto the outer peripheral surface of the enlarged diameter cylinder portion 20. At the same time, the wedge-shaped recess 56 at the lower part of the screw cylinder portion 44 fits onto the stopper 31 of the upper wall 7 of the middle plug B, completing the screwing together of both threads.

[0037] The assembled transfer plug cap in the set state is applied to the mouth portion 1 of the container body A filled with the contents, and the mounting portion 4 of the middle plug B is used for capping and is provided for use. Thus, in the transfer plug cap of this embodiment, when setting the screw cap C onto the middle plug B, the screw cap C can be attached to the middle plug B by capping, eliminating the need for a ratchet mechanism as in conventional transfer plug caps, enabling the one-touch completion of the setting of the screw cap C and the middle plug B. Also, by extending the tip of the sealing cylinder portion 43 more than before to form the second engaging protrusion 48, the screw cap C can be stably guided with respect to the transfer plug body 12, thus improving the workability of setting the screw cap C and the middle plug B. In this embodiment, a ratchet mechanism is not used, but a structure in which the screw cap C is screwed onto the middle plug B using a ratchet mechanism as in conventional transfer plug caps may also be employed.

[0038] Next, to use the container with the transfer plug cap of this embodiment, rotate the screw cap C in the lid-opening direction with respect to the inner plug B. When the screw cap C is rotated, the narrow inner teeth 51 of the sealing cylinder portion 43 rotate, and when the second engaging surface 51a thereof abuts against the first engaging surface 18a of the wide outer teeth 18 of the transfer plug body 12, the rotational force of the screw cap C is applied to the transfer plug body 12 via the inner and outer teeth.

[0039] After that, as the rotation progresses, the tip of the vibrating piece 58 of the sound-emitting member 45 of the screw cap C abuts against the sound-emitting protrusion 29 on the top wall 9 of the inner plug B. As the rotation further progresses, the vibrating piece 58 advances while being curved and deformed, the tip of the vibrating piece 58 gets over the sound-emitting protrusion 29, and the curved and deformed vibrating piece 58 restores and vibrates, generating a sound.

[0040] At this time, since the second engaging protrusion 48 of the sealing cylinder portion 43 is tightly fitted to the outer peripheral surface of the enlarged-diameter cylinder portion 20 of the transfer plug body 12, a force for pulling up the transfer plug body 12 upward can be generated over the entire circumference of the enlarged-diameter cylinder portion 20 as the screw cap C rotates. As the rotation of the screw cap C progresses, due to the rotational force and the pulling-up force applied to the transfer plug body 12, finally the thin-wall weakened portion 11 breaks and the discharge port opens in the discharge cylinder 10. The transfer plug body 12 separated from the discharge cylinder 10 is pulled up by the second engaging protrusion 48 of the sealing cylinder portion 43 that engages with the first engaging protrusion 21 of the peripheral bottom wall 17, and rises together with the screw cap C.

[0041] Furthermore, if the female screw 55 is unscrewed from the male screw 26 to detach the screw cap C from the inner plug B, the contents in the container body A can be poured out from the discharge port of the discharge cylinder 10 from which the transfer plug body 12 has been removed together with the screw cap C.

[0042] When the screw cap C is opened from the middle plug B, the transfer plug body 12 that is transferred to the screw cap C does not have a large gap with the entire back surface recessed like the transfer plug cap described in the prior art document. On the back surface of the transfer plug body 12, only a ring-shaped gap α surrounded by the cylindrical wall 14, the annular wall 19, and the diameter-expanded cylindrical portion 20 is formed, and it is difficult for the contents to accumulate on the back surface of the transfer plug body 12.

[0043] Furthermore, in this embodiment, the transfer plug body 12 has a plurality of gap ribs 23 protruding radially from the outer peripheral side of the cylindrical wall 14 within the gap α, so that the volume of the gap α can be reduced, and it becomes more difficult for the contents to accumulate on the back surface of the transfer plug body 12. Therefore, when the screw cap C is opened, it is possible to suppress the contents from dripping from the back surface of the transfer plug body 12 that is transferred to the screw cap C.

[0044] After the contents are poured out, when the screw cap C is screwed onto the middle plug B again, the seal portion 50 of the seal cylinder portion 43 of the screw cap C can be in close contact with the inner circumference of the pouring cylinder 10 to seal the inside of the container. Also, when the screwing of both screws is completed, the tip of the vibrating piece 58 of the sound-emitting member 45 abuts against the sound-emitting protrusion 29 and vibrates again, and a sound is emitted. Therefore, the user of this embodiment can sensuously know the completion of the closing of the cap.

[0045] The middle plug B of the transfer plug cap of this embodiment can be separated from the container body A by a simple operation and separately discarded when the container is discarded after use. First, when a finger is hooked on the hooking recess 36 near the vertical cutting portion 35 shown in FIG. 2(b) and the gripping portion 34 is pulled forward, the vertical cutting portion 35 breaks, and the gripping portion 34 expands outward. While gripping the gripping portion 34 with a finger and further pulling the gripping portion 34, the thin-walled portion from the intermediate portion 33c to the end portion 33b of the slit 33 is easily broken, and then the thin-walled initial breaking portion 37 provided adjacent to the end portion 33b of the slit 33 breaks, and the breaking progresses to the circumferential cutting portion 38.

[0046] When the circumferential cutting portion 38 breaks, the engagement of the locking reduced diameter portion 30 with the locking protrusion 2 is released. Therefore, when the break progresses to near the thick-walled connecting portion 39, the restraint of the mouth portion 1 by the locking reduced diameter portion 30 is released. When the gripping portion 34 is pulled up, the inner stopper B can be detached from the container body A and separately discarded.

[0047] In this embodiment, in order to stop the rotation after closing the lid, the stopper 31 and the wedge-shaped recess 56 are provided on the inner stopper B and the screw cap C. However, at the end of closing the lid, a sound is generated by the sound generating member 45, and the user can sensually know the end of closing the cap. Therefore, the stopper 31 and the wedge-shaped recess 56 may not be provided, and further, the sound generating mechanism by the sound generating protrusion 29 and the sound generating member 45 may not be provided.

Industrial Applicability

[0048] The transfer plug cap of the present invention is a transfer plug cap including an inner stopper having a removable transfer plug body attached to the mouth portion of the container body, and a screw cap screwed to the inner stopper and detachably attached thereto. After the screw cap of the transfer plug cap is rotated in the lid-opening direction to open the cap, it is difficult for the content to accumulate on the back surface of the transfer plug body that is transferred to the screw cap, and it is possible to suppress the content from dripping from the back surface of the transfer plug body when opening the lid. Therefore, it is suitable as a transfer plug cap that can be widely used for containers such as food and drink products and seasonings.

Explanation of Reference Numerals

[0049] A Container body B Inner stopper C Screw cap F Separation mechanism G Gate α Gap θ Angle 1 Mouth portion 2 Locking protrusion 4 Mounting portion 5 Outer cylinder 6 Inner cylinder 7 Upper wall 8 Screw wall portion 9 Top wall 10 Pouring cylinder 11 Thin-wall weakening part 12 Transition plug body 13 Bottom wall 14 Cylindrical wall 15 Columnar protrusion 16 Central bottom wall 17 Peripheral bottom wall 18 Wide outer teeth (first engagement part) 18a First engagement surface 18b First non-engagement surface 18c Relief part 19 Annular wall 20 Diameter-expanded cylindrical part 21 First engaging protrusion (first engaging part) 22 Flange part 23 Gap rib 24 Outer concave groove 25 Inner concave groove 26 Male thread (first thread part) 26a Inclined upper surface 26b Flat lower surface 27 Reinforcing rib 28 Step part 29 Sound-generating protrusion 30 Locking reduced-diameter part 31 Stopper 32 Notch concave part 33, 49 Slit 33a Starting end part 33b Ending end part 33c Middle part 34 Gripping part 35 Longitudinal cutting part 36 Hooking concave part 37 Thin-wall starting cutting part 38 Circumferential cutting part 39 Thick-wall connecting part 40 Top wall 41 Outer peripheral wall 43 Sealing cylindrical part 44 Threaded cylindrical part 45 Sound-generating member 48 Second engaging protrusion (second engaging part) 50 Sealing part 51 Narrow inner teeth (second engagement part) 51a Second engagement surface 51b Second non-engagement surface 55 Female screw (second screw part) 55a Flat upper surface 55b Inclined lower surface 56 Wedge-shaped recess 57 Base 58 Vibration piece

Claims

1. A transition plug cap comprising a stopper fitted to the mouth of a container body and a screw cap that is threadedly engaged with the stopper and removably attached thereto, The stopper includes a pouring cylinder and a transition plug body that is continuously provided via a thin-walled weakened portion on the inner peripheral surface of the pouring cylinder, and a first engaging portion is formed in the circumferential direction, The screw cap includes a top wall, a sealing cylinder portion that hangs down from the top wall and seals the pouring cylinder at the outer periphery when closed, and a second engaging portion that can engage with the first engaging portion of the transition plug body, The transition plug body includes a bottom wall that seals the inner pouring outlet from the thin-walled weakened portion, a cylindrical wall erected from the bottom wall, and a ring-shaped gap recessed on the outer peripheral side of the lower portion of the cylindrical wall, The transition plug body is characterized by comprising a plurality of gap ribs protruding radially from the outer peripheral surface of the cylindrical wall where the gap is formed.

2. The bottom wall of the transition plug body is characterized by comprising a central bottom wall that seals the inner peripheral side of the lower end of the cylindrical wall and a ring-shaped peripheral bottom wall that extends radially from the outer periphery of the cylindrical wall with the gap therebetween, as claimed in claim 1.

3. The peripheral bottom wall is characterized by comprising a ring-shaped annular wall that extends radially from the middle of the outer periphery of the cylindrical wall, an enlarged-diameter cylinder portion that hangs down from the outer edge of the annular wall, and a flange portion that extends outward from the lower outer periphery of the enlarged-diameter cylinder portion and is continuously provided with the thin-walled weakened portion, as claimed in claim 2.

4. The transition plug body is characterized by comprising a columnar protrusion that stands upright from the center of the bottom wall and has a gate provided at the tip, as claimed in claim 2 or 3.

Images