TW201431755A - Bottle seal cap - Google Patents

Abstract

A bottom cap seal for sealing the lower end opening of a material containing part is configured so as not to fall after its opening but configured simply in its entirety compared to the prior art, thus reducing significant production cost and assembling work and providing its form similar to the general screw cap when attached to the bottle mouth. A bottom seal cap consists of a main cap 2, an inner seal cap 3 and a bottom seal cap 4. The main cap 2 integrally forms a cylindrical material containing part 6 which is inserted into a bottle mouth 100a with a cap body 5 which is a screw cap for sealing the bottle mouth 100a. The inner cap 3 is formed cylindrical so as to receive the material containing part 6 and fitted in the bottle mouth 100a with strength so as not to follow the rise due to rotation of the main cap 2 for its opening. The bottle seal cap 4 is integrally formed with the inner cap so as to be separated from a separating part 19 on a border with the inner cap 3 and fitted with the lower end opening of the material containing part 6 to seal its lower end opening and connected to the inner cap 3 by a link part 24 with a spring nature.

Description

Cap

The present invention relates to a bottle cap having a material accommodating portion for accommodating a powdery or liquid material, and which is opened by the opening operation to deposit the raw material into the bottle.

In such a cap, a bottom cover (seal bottom cover) for closing the lower end opening of the raw material storage portion is required, and even if the bottom cover opens the lower end opening of the raw material storage portion, the bottom cover does not fall into the bottle. As such a cap, those described in Patent Document 1 and Patent Document 2 are well known in the art.

Among these conventional techniques, the following constitutions are available.

(1) A fixed cover that is fixed to the mouth of the bottle, that is, a female cover, is provided with a rotatable and extractable movable cover, that is, a sub-cover, and the two caps cooperate to close the mouth of the bottle.

(2) The raw material accommodating portion is integrally suspended from the sub-cover, and on the other hand, the bottom cover is suspended from the lower end of the female cover, and the upward movement of the raw material accommodating portion from the female cover is carried out with the opening operation of the sub-cover The bottom cover is detached from the raw material accommodating portion, and the bottom cover is suspended from the lower end of the female cover to open the lower end opening of the raw material accommodating portion.

However, in order to constitute the above (1), in addition to the main thread seal portion which is to be threaded to close the mouth of the bottle, the female cap needs to be additionally threaded to close the sub-thread seal portion of the sub-cover, which is complicated in structure. And the molding cost is high. Moreover, in the state of being installed in the mouth of the bottle, the upper part of the sub-cover and the lower part of the mother cover are formed on the outer side of the bottle mouth to form two covers. The shape of the lower overlap, so the height of the entire cover is bound to increase. Moreover, since such a mounting form is formed, it is only necessary to carry out the opening of the cover by the sub-cover, but it is accompanied by a situation in which the female cover is also forcibly opened.

Further, in order to constitute the above (2), it is difficult to integrally form the bottom cover (seal bottom cover) for sealing the raw material storage portion with the mother cover or the sub cover, and therefore it is necessary to make the mother cover, the sub cover, and the bottom cover respectively. The three-piece construction is formed by itself, and it is also required to be a structure for pivotally suspending the bottom cover to the lower end of the female cover, which not only includes a material cost but also has a high manufacturing cost and an cumbersome assembly work.

Patent Document 1: Japanese Patent Laid-Open Publication No. 2009-255968

Patent Document 2: Japanese Patent Laid-Open Publication No. 2009-126527

The problem to be solved by the present invention is that not only the sealing bottom cover that closes the opening of the lower end of the raw material accommodating portion is configured to be not dropped after being opened, but the overall structure is far simpler than the conventional technology, and the manufacturing cost and assembly work are greatly reduced. And the shape of the mouth of the bottle is not changed with the general screw cap.

According to a first aspect of the invention, the bottle cap is composed of a main cover, an inner cover, and a sealing bottom cover, and the main cover is inserted into a cylindrical material storage portion of the bottle mouth portion, The integrated body is disposed on the screw cap of the closed bottle mouth portion, that is, the cover body portion, and the inner cover is in a cylindrical shape for accommodating the material receiving portion thereof and has a cover opening that does not follow the main cover with respect to the bottle mouth portion. The strength of the rising is embedded in the mouth of the bottle, and the sealing bottom cover is fitted to the opening of the lower end of the material receiving portion, and the lower end opening is closed, and is connected to the inner cover by the elastic connecting portion. And by rotating the cover with the main cover The rise caused by the transfer causes the fitting of the lower end portion of the raw material accommodating portion to be separated from the sealing bottom cover, and the sealing bottom cover opens the lower end opening of the raw material accommodating portion and hangs from the inner cover by the link portion.

According to the second aspect of the main constitution, the raw material filling port filled with the raw material is formed on the top of the cap body of the main cover, and the raw material filling port is closed by the closing member.

According to a third aspect of the invention, in the second aspect of the invention, the material filling opening is closed as a closing member formed by integrally forming a filling opening cover at the top of the lid body.

According to a fourth aspect of the invention, in the outer cover, an annular projection that is pressed against the inner peripheral surface of the bottle mouth portion is formed on the outer peripheral surface of the inner lid.

According to a fifth aspect of the invention, in the inner cover and the bottom cover, the inner cover and the inner cover are integrally formed, and a separation portion is formed at a boundary thereof, and the bottom cover is sealed by the opening of the main cover. The rotation is caused, and the separation is separated from the inner cover at the separation portion.

According to a sixth aspect of the invention, the sealing bottom cover and the link portion are configured to be coupled by a shaft coupling that allows the former to rotate.

Further, according to the seventh aspect of the invention, the outer peripheral surface of the sealing bottom cover is integrally provided with an anti-offset portion that can abut against the neck portion of the bottle mouth portion.

According to a eighth aspect of the invention, in the inner cover and the seal bottom cover, the seal bottom cover is different from the fifth invention in a state of being separated from the inner cover and being integrated with the inner cover. Continuous molding, and the inner cover is idly inserted into the mouth of the bottle.

According to a ninth aspect of the invention, the inner cover and the cover main body portion of the main cover are formed on the outer periphery of the inner cover, and are formed between the outer periphery of the bottle mouth portion and the cover main body portion of the main cover. The captain who is being held hostage.

According to a ninth aspect of the present invention, in the ninth aspect of the inner cover, the cover main body portion of the inner cover is formed with a one-way engagement with the rotation of the main cover in the closing direction, and a unidirectional engagement with the rotation in the opening direction. Engagement part.

In the bottle cap according to the first aspect of the invention, the main cover is configured such that the cylindrical material storage portion is integrally provided to the general screw cap, and the inner lid functioning as an auxiliary function is inserted into the bottle mouth portion. The shape of the sealing bottom cover that closes the opening at the lower end of the raw material accommodating portion is configured to be located on the inner cover side instead of the main cover side as in the prior art.

Thereby, since the main cover side no longer has a secondary threaded closing portion for screwing the inner cover, and the means for suspending the sealing bottom cover is no longer required, the structure can be greatly simplified and compared with the prior art. The forming of the lid is also easy.

Since the sealing bottom cover is provided in a simple structure to be fitted to the lower end opening portion of the raw material storage portion and is provided on the inner cover side, the sealing bottom cover and the inner cover are easily formed, and substantially only two different shapes can be made. The two-piece construction of the molded member can greatly reduce the molding manufacturing cost including the raw material cost.

The material storage portion of the main cover is closed, and the raw material storage portion is inserted into the inner lid to be combined into a double cylindrical shape, and the sealing bottom cover is embedded in the front end portion of the raw material storage portion. That is, the assembly workability is good and the sealing property is also high.

The appearance and size of the bottle cap installed in the mouth of the bottle are the same as those of the general screw cap, so that there is no increase in the height of the bottle opening as in the prior art, and also There will be no cases where the opening operation is not correct.

After the sealing bottom cover is opened with the opening operation of the main cover, the sealing bottom cover together with the inner cover It remains in the bottle, but is maintained in an open state by the restoring force of the elastic link portion. Therefore, the sealing bottom cover does not act like a valve and hinders the flow of the contents of the bottle.

According to the second aspect of the invention, the raw material filling port for filling the raw material is formed on the top of the cover body of the main cover, and the raw material filling opening is closed by the closing member, so that the main cover and the inner cover and the sealing bottom cover are assembled and the raw material is finished. After the bottom side of the accommodating portion is closed, the raw material can be filled into the raw material accommodating portion by the top side of the main body portion of the lid of the self-covering without the need to reverse the members. Therefore, the filling operation of the raw material is simple, and the washing operation after filling is also easy. Therefore, the automation of assembly, raw material filling and washing can be realized economically and efficiently with small-scale mechanical equipment.

According to the third aspect of the invention, since the raw material filling opening is closed by the filling opening cover integrally formed on the top of the cap body, the closing operation is easy.

According to the fourth aspect of the invention, since the annular projection formed on the outer circumferential surface of the inner lid is pressed against the inner circumferential surface of the bottle mouth portion, the inner lid does not follow when the lid is opened by rotating the main lid. Out, and can improve the sealing of the mouth of the bottle.

According to the fifth aspect of the invention, since the sealing bottom cover is integrally formed with the inner cover as the bottom of the inner cover and the separation portion is formed at the boundary of the inner cover, the inner cover itself is completely sealed by the sealed bottom cover which is an integral bottom. On the other hand, since the sealing bottom cover is separated and opened from the separation portion at the boundary with the inner cover by the opening operation of the main cover, an auxiliary means for opening the same is not required.

According to the sixth aspect of the invention, since the sealing bottom cover and the link portion are coupled by the shaft coupling that allows the rotation of the former, when the main cover is opened, no link portion is twisted to cause the combination. The situation of separation.

According to the seventh aspect of the invention, after the sealing bottom cover is separated from the inner cover, even if the coupling of the link portion is disengaged, the anti-offset portion protruding from the outer peripheral surface of the sealing bottom cover abuts against the bottle mouth. The neck of the part can still prevent the sealing bottom cover from blocking the mouth of the bottle from the inside or pulling out from the mouth of the bottle The situation.

According to the eighth aspect of the invention, since the sealing bottom cover is integrally formed integrally with the inner cover together with the connecting rod in a state of being separated from the inner cover, the joint work of the link portion is not required, and since the inner cover is idly It is embedded in the mouth of the bottle, so the link portion will not be twisted during the opening operation of the main cover.

According to the ninth aspect of the invention, since the crotch portion formed on the periphery of the inner lid is held between the peripheral edge of the bottle mouth portion and the lid main portion of the main lid, the sealing property to the mouth portion can be improved, and The lid has good stability to the mouth of the bottle.

According to the tenth aspect of the invention, since the main cover and the inner cover are engaged by the one-way meshing portion, the raw material accommodating portion and the inner cover of the main cover can be correctly set in the bottle mouth portion when the bottle cover is attached to the bottle mouth portion, and On the other hand, when the main cover is rotated to perform the opening operation, the inner cover can be prevented from following the rotation, so that the sealing bottom cover can be surely opened.

1‧‧‧ caps

2‧‧‧Main cover

3‧‧‧ inner cover

4‧‧‧ Sealing the bottom cover

5‧‧‧ Cover body

5a‧‧‧ top

5b‧‧‧胴

6‧‧‧Material containment department

6a‧‧‧Bottom opening

7‧‧‧Threading Department

8‧‧‧ rib

9‧‧‧ incision

10‧‧‧Locking ring

11‧‧‧Side seals for side seals

12‧‧‧ Ratchet teeth as one-way meshing

13‧‧‧Upper seal for the upper seal

14‧‧‧Integral rotation auxiliary recess

15, 16‧‧‧Locked ring

17‧‧‧锷

18‧‧‧ as a recess in the one-way meshing portion

19‧‧‧Departure Department

19a‧‧‧Incision

20‧‧‧Circular recess for sealing

20a‧‧‧One rotation auxiliary convex

21‧‧‧ as a protrusion of the shaft coupling

21a‧‧‧ narrowed part

21b‧‧‧ front end

22, 23‧‧ ‧ convex

24‧‧‧ Linkage Department

25‧‧‧Reinforcement ribs

26‧‧‧Combination hole

27‧‧‧Slit

28‧‧‧Material filling

28a‧‧‧Steps

29‧‧‧ Filling flaps

29a‧‧‧Steps

30‧‧‧ Hinge section

31‧‧‧ Sealing material

32‧‧‧Protection prevention

33,34‧‧‧Integrated rotation assisted toothing

100‧‧‧Pet Bottle

100a‧‧‧ Bottle mouth

100b‧‧ Thread Department

101‧‧‧Materials

Fig. 1 is a cross-sectional view showing a state in which a cap of the first embodiment is attached to a mouth of a bottle.

Fig. 2 is a cross-sectional view similar to the same and with the addition of a part of the member taken out.

Fig. 3 is a side view showing the separation of the main cover and the inner cover of the first embodiment.

Fig. 4 is a cross-sectional view showing only the main cover of the embodiment 1.

Figure 5 is a perspective perspective view thereof.

Fig. 6 is a cross-sectional view showing only the inner lid of the first embodiment.

Fig. 7 is a cross-sectional view showing a state in which the link portion and the sealing bottom cover are joined in this state.

Fig. 8 is only a cross-sectional view of the link portion.

Fig. 9 is a front elevational view showing the assembled state of the cap of the embodiment 1.

Figure 10 is a side view of the same as above.

Figure 11 is a bottom view of the same.

Figure 12 is a cross-sectional view showing the intermediate process of opening the cap of the bottle of Example 1.

Figure 13 is a cross-sectional view after opening the cover.

Figure 14 is a perspective view of the bottle cap of the second embodiment.

Figure 15 is a front view of the same as above.

Fig. 16 is a cross-sectional view showing the state in which the cap of the second embodiment is attached to the mouth of the bottle.

Fig. 17 is a cross-sectional view showing the state in which the cap of the third embodiment is attached to the mouth of the bottle.

Fig. 18 is a side view showing only the inner lid of the embodiment 4.

Fig. 19 is a cross-sectional view showing the state in which the cap of the fourth embodiment is attached to the mouth of the bottle.

Fig. 20 is a front elevational view showing the state in which the cap of the embodiment 5 is attached to the mouth of the bottle.

Figure 21 is a cross-sectional view of the same as above.

In a preferred embodiment of the present invention, in order to easily form the inner cover and the sealing bottom cover integrally, and to improve the sealing property of the sealing bottom cover, the inner cover is separated from the inner cover and the bottom cover. It is integrally formed with the sealing bottom cover. According to this configuration, the cover operation is performed by rotating the main cover, the seal bottom cover is rotated together with the main cover, and is separated from the inner cover at the separation portion, and is also detached from the raw material storage portion of the main cover in the ascending portion. Its lower end opening is open. In this case, it is preferable that the sealing bottom cover and the link portion are coupled by the shaft coupling so that the rotation of the sealing bottom cover is not transmitted to the link portion for holding the sealing bottom cover to the inner cover.

Further, regarding the filling of the raw material, a raw material filling port is formed on the top of the cover body of the main cover, and the raw material filling opening is closed by the closing member.

Hereinafter, embodiments of the invention will be described with reference to the drawings.

[Example 1]

Fig. 1 is a cross-sectional view showing a state in which a cap 1 of the first embodiment of the present invention is attached to a PET bottle (hereinafter referred to as a bottle) 100, and Fig. 2 shows a similar cross section and a perspective view in which a part of the members are taken out. The function of the cap 1 is that it is composed of a main cover 2, an inner cover 3 and a sealing bottom cover 4, but as a resin molding form, the main cover 2 is only one of its own molded products, the inner cover 3 and the sealing bottom cover. In the case of the four-piece structure, the one-piece molded product is integrally molded, and the two-piece structure is composed of two members. Figure 3 shows these two components separately.

The structure of the main cover 2 will be described with reference to Figs. 3, 4 and 5.

The main cover 2 is formed by a cover body 5 composed of a top portion 5a and a crotch portion 5b in a shape similar to a general screw cap, and has a lower end opening integrally formed on the lower surface of the top portion 5a toward the lower portion than the crotch portion 5b. The cylindrical material storage unit 6 of 6a is formed. A threaded portion 7 screwed to the mouth portion 100a of the PET bottle 100 is formed on the inner circumferential surface of the crotch portion 5b. The peripheral portion of the lower portion of the crotch portion 5b is formed with a slit 9 over the entire circumference by leaving a thin rib 8 at a plurality of portions to form a separable locking ring portion 10. This ring portion 10 has a cross section that protrudes inward.

Further, a side seal projection 11 is formed on the lower surface of the top portion 5a and around the bottom end portion of the material storage portion 6 along the entire circumference, and a plurality of ratchets are integrally formed at intervals in the circumferential direction. Further, the teeth 12 are formed with an upper triangular seal portion 13 having a tapered triangular cross section between the side seal projections 11 and the ratchet teeth 12 along the entire circumference. The plurality of ratchet teeth 12 are inclined such that each of the teeth is inclined in the vertical direction so as to become a one-way meshing portion to be described later.

The material accommodating portion 6 is formed such that the thickness of the lower peripheral portion thereof is slightly tapered, and a plurality of shallow integral small-sized auxiliary concave portions 14 are formed at intervals in the circumferential direction on the outer peripheral surface of the lower peripheral portion.

Next, the structure of the inner lid 3 and the sealing bottom cover 4 will be described together with reference to Figs. 2, 5 and 6.

The inner cover 3 is formed in a cylindrical shape which is tapered toward the lower end, and has an outer diameter which is tightly fitted to the inside of the mouth portion 100a, and a locking ring is formed on the entire circumference of the lower two portions of the outer peripheral surface. The protrusions 15, 16 are formed such that the lower portion thereof is formed to have a slightly smaller outer diameter in order to be easily inserted into the bottle mouth portion 100a.

A crotch portion 17 having an outer diameter placed on the periphery of the bottle mouth portion 100a is formed on the outer periphery of the inner lid 3, and each of the ratchet teeth 12 on the side of the main cover 2 is formed on the upper surface of the crotch portion 17. A plurality of recesses 18 are respectively engaged. The recess 18 is formed such that the bottom surface is inclined so as to be unidirectionally engageable with the ratchet teeth 12.

The sealing bottom cover 4 is integrally formed with the inner cover 3 in such a manner as to be the bottom of the inner cover 3, but a slit 19a is formed on the entire circumference of the outer peripheral surface of the boundary, whereby the separation portion 19 and the inner cover are only slightly thick. 3 is connected, and becomes a structure that can be disconnected from the inner cover 3. Since the separation portion 19 is continuous over the entire circumference, there is no portion that is disconnected halfway between the inner lid 3 and the sealing bottom cover 4.

A sealing annular recess 20 having a narrow width is formed along the entire circumference of the bottom cover 4 and at the lower side of the separating portion 19, and the inner peripheral wall of the annular recess 20 has a higher height than the outer peripheral wall, so that the position is higher than The position of the separation portion 19. A plurality of integral rotation assisting convex portions 20a are formed on the inner circumferential surface of the outer peripheral wall of the annular recessed portion 20, and the like, and each of the integral rotation assisting concave portions 14 formed in the raw material storage portion 6 of the main cover 2 as described above. Separately.

Further, a coupling protrusion 21 as a shaft coupling is integrally protruded downward from the center of the lower surface of the sealing bottom cover 4. The intermediate portion of the engaging projection 21 is narrowed, and the front end portion 21b is swollen before the narrowed portion 21a.

Moreover, in order to strengthen the strength of the sealing bottom cover 4, a convex portion 22 is formed at the center of the upper surface thereof. An annular convex portion 23 is formed on the lower surface.

On the other hand, the outer peripheral surface of the inner lid 3 is integrally extended from the lower portion thereof to the strip-shaped link portion 24 so as to be elastically extended obliquely downward. In order to increase the elasticity and the strength, as shown in FIGS. 3 and 8, the link portion 24 is formed in parallel with a plurality of reinforcing ridges 25, and is coupled to the coupling protrusion 21 on the side of the sealing bottom cover 4 at the front end. The joint portion is provided with a joint hole 26 and a slit 27 for joining the joint of the joint hole 26. In order to increase the strength, the bottom end portion of the link portion 24 is formed to be thick.

The cap 1 constituting each part as described above was assembled in the following manner. 9, 10 and 11 show the state after assembly.

The raw material accommodating portion 6 of the former cover 2 and the inner cover 3 is inserted into the latter to be fitted into a double cylindrical shape, and the raw material 101 such as a beverage powder, a drug or a solvent is filled in the raw material accommodating portion 6 together with the pressurized gas to make a raw material. The lower end portion of the accommodating portion 6 is press-fitted to the sealing annular recess 20 of the sealing bottom cover 4 to hermetically close the lower end opening 6a of the raw material accommodating portion 6. At this time, as shown in FIG. 2, the one body rotation assisting recessed portion 14 on the side of the raw material accommodating portion 6 is fitted to the one body rotation assisting convex portion 20a on the side of the sealing bottom cover 4, and the top of the main cover 2 is made as shown in the drawing. The ratchet teeth 12 on the 5a side are fitted into the recesses 18 on the side of the crotch portion 17 of the inner cover 3.

When the main cover 2 and the inner cover 3 are combined in this manner, the side sealing projections 11 projecting from the top portion 5a of the main cover 2 are pressed against the inner circumferential surface of the inner cover 3, and the raw material is accommodated at the upper end portion thereof. The portion 6 and the inner lid 3 are hermetically sealed.

Further, as shown in FIG. 7, the link portion 24 extended to the inner cover 3 is elastically bent, and its coupling hole 26 is combined with the coupling protrusion 21 on the side of the sealing bottom cover 4, so that the front end of the latter is provided. The portion 21b is joined to the bonding hole 26 and is fitted to the narrowed portion 21a.

In order to mount the cap 1 assembled in this manner to the bottle mouth portion 100a, such as As shown in Fig. 1 and Fig. 2, on the one hand, the inner lid 3 formed in a double cylindrical shape with the raw material accommodating portion 6 is pressed into the bottle mouth portion 100a, and on the other hand, the main cover 2 is rotated in the closing direction to screw the threaded portion 7 thereof. The screw portion 100b of the bottle mouth portion 100a is fitted. At this time, the ratchet teeth 12 on the top 5a side of the main cover 2 and the recesses 18 on the side of the crotch portion 17 of the inner cover 3 are engaged in a one-way meshing relationship, that is, in the closing direction, so that the inner cover 3 is on the one hand and the main cover 2, the integral rotation is pressed into the bottle mouth portion 100a, and when the locking ring portion 10 of the main cover 2 is locked over the locking annular projection 100c provided in the bottle mouth portion 100, the main body is completed. The cover of the cover 2 is closed.

When this state is reached, the crotch portion 17 of the inner lid 3 is held between the peripheral edge of the bottle mouth portion 100a and the main lid 2, and the sharp upper sealing projection provided at the top portion 5a of the main lid 2 is provided. 13 is in a state of biting into the upper surface of the crotch portion 17 of the inner lid 3. In addition to the above two states, as described above, since the side seal projections 11 on the top 5a side of the main cover 2 are also crimped to the inner peripheral surface of the inner lid 3, the outer peripheral seal of the inner lid 3 is sealed. It has a triple seal construction and its sealing performance is extremely high.

Further, since the locking annular projections 15, 16 formed on the outer circumferential surface of the inner lid 3 are pressed against the inner circumferential surface of the bottle mouth portion 100a, a double seal is formed between the inner lid 3 and the mouth portion 100a. .

When the cap 1 is opened, the main cap 2 is rotated in the opening direction. When the main cover 2 is rotated in this direction, the ratchet teeth 12 on the top 5a side of the main cover 2 are engaged with the recesses 18 on the crotch portion 17 side of the inner cover 3. Since the locking projections 15 and 16 of the outer peripheral surface of the inner cover 3 are pressed against the inner circumferential surface of the bottle mouth portion 100a and are locked to the mouth portion 100a, they do not follow the main cover 2 for rotation. And still maintain its current state. When the main cover 2 is rotated in the opening direction, the main cover 2 is raised on the one hand with respect to the bottle mouth portion 100a, but the inner cover 3 does not follow this as it rises. Then, on the main cover 2, the thin rib 8 is broken, as shown in Fig. 12, the locking ring 10 is locked to the bottle mouth portion 100a. The portion is left in place by the annular projection 100c, and the other portion is rotated on the one hand.

In addition, the sealing bottom cover 4 is such that the sealing annular recessed portion 20 is press-fitted to the lower end portion of the raw material accommodating portion 6, and the one side of the raw material accommodating portion 6 is provided with the rotation assisting recess portion 14 and the sealing bottom cover 4 side. Since the integral rotation assisting convex portion 20a is fitted, the torsion force from the main cover 2 is applied, as shown in Fig. 12, the separation portion 19 is broken, the sealing bottom cover 4 is separated from the inner cover 3, and as the main cover 2 rises The fitting of the annular recessed portion 20 for sealing and the lower end portion of the raw material accommodating portion 6 is also released. Thereby, the lower end opening 6a of the raw material accommodating portion 6 is opened, and the lower end of the inner lid 3 is also opened. In the period until then, the sealing bottom cover 4 rotates together with the material accommodating portion 6, but since the coupling projection 21 serves as a shaft coupling that engages with the coupling hole 26 of the link portion 24, there is no Torque is applied to the link portion 24.

When the sealing bottom cover 4 is separated from the inner cover 3 and detached from the lower end portion of the raw material accommodating portion 6, the pressure of the pressurized gas filled in the raw material accommodating portion 6 is applied to the sealing bottom cover 4, and the link portion 24 is thereby The elastic force is restored to the original state. Therefore, as shown in FIG. 13, the sealing bottom cover 4 is quickly separated from the lower end of the inner cover 3, and is moved until the link portion 24 returns to the original state (very close to the inner circumferential surface of the bottle 100). It is in a state of being suspended from the inner lid 3 which remains in the bottle mouth portion 100a. Therefore, the raw material 101 filled in the raw material storage unit 6 is quickly placed in the bottle 100 together with the pressurized gas without being disturbed by the sealing bottom cover 4.

By completely removing the main cover 2 from the mouth portion 100a, the beverage, the medicament or the solution in the bottle 100 in which the raw material 101 is mixed can be discharged from the open mouth portion 100a to the outside, but at this time, due to the sealing bottom The cover 4 is held at a position separated from the lower end of the inner cover 3 by the elastic restoring force of the link portion 24 (plus the self-weight of the sealing bottom cover 4), so that the outflow is not hindered.

[Embodiment 2]

Next, a second embodiment will be described with reference to Figs. 14, 15, and 16.

In the second embodiment, the configuration of the first embodiment is added, and a circular raw material filling port 28 is formed in the central portion of the top portion 5a of the main cover 2, and is used as a sealing member for closing the raw material filling port 28. The filling opening cover 29, in which the raw material filling opening 28 is a uniform shape, is integrally formed with the main cover 2. The filling opening cover 29 is a thin hinge portion 30 (see FIG. 16) of one portion of the edge of the raw material filling opening 28 (see FIG. 16). The top portion 5a of the autonomous cover 2 is integrally continuous and can be opened and closed by the hinge portion 30. A step portion 28a is formed on the edge of the material filling port 28 and is formed over the entire circumference, and a step portion 28a is formed in the filling port cover 29.

In the second embodiment, after the main cover 2, the inner cover 3, and the sealing bottom cover 4 are assembled as described in the first embodiment, the raw material 101 is filled with the pressurized gas from the raw material filling port 28 in the raw material storage portion 6. After the raw material filling port 28 is closed by the filling port cover 29, a thin circular sealing member 31 such as aluminum foil is attached as an auxiliary closing member to the upper surface 5a of the main cover 2 to cover the upper surface of the filling opening cover 29 and its surroundings. . By having such a configuration, the filling of the raw material filling port 28 can be surely performed by the filling port cover 29, and the sealing property is also high, and the sealing material 31 can conceal the existence of the raw material filling port 28 and the filling port cover 29.

[Example 3]

Fig. 17 shows a third embodiment in which the filling opening cover 29 of the second embodiment is omitted and the raw material filling opening 28 is closed only by the sealing member 31.

[Example 4]

Figs. 18 and 19 show a fourth embodiment in which, in addition to the configuration of the first embodiment, a plurality of portions on the outer peripheral surface of the sealing bottom cover 4 are integrally provided with an anti-drop portion 32 obliquely upward.

According to this configuration, the anti-offset portion 32 abuts against the bottom end portion of the bottle mouth portion 100a, and even if the sealing bottom cover 4 separated from the inner lid 3 is detached from the link portion 24, it is prevented. The sealing bottom cover 4 blocks the bottle mouth portion 100a from the inside or is pulled out from the bottle mouth portion 100a.

In the case of the configuration of Embodiment 4, the raw material filling structure as in Example 2 or Example 3 can also be applied.

Further, in any of the above-described embodiments, the one body rotation assisting concave portion 14 on the side of the raw material accommodating portion 6 and the one body rotation assisting convex portion 20a on the side of the sealing bottom cover 4 can be omitted. Further, as long as the locking force of the inner lid 3 to the bottle mouth portion 100a can be ensured, the ratchet teeth 12 on the top portion 5a side of the main lid 2 and the recess portion 18 on the side of the crotch portion 17 of the inner lid 3 can be omitted.

[Example 5]

20 and 21 show Embodiment 5.

In the fifth embodiment, the relationship between the inner cover 3 and the sealing bottom cover 4 is different from that of the above-described first to fourth embodiments, and is in a state in which the sealing bottom cover 4 is separated from the inner cover 3, and is a short connecting portion having elasticity. The (hinge portion) 24 is integrally continuous and integrally formed with the inner lid 3.

In this case, the outer peripheral wall of the annular recessed portion 20 for sealing of the inner lid 3 and the outer peripheral wall of the annular recessed portion 20 for sealing the bottom cover 4 are respectively formed with tooth portions 33 and 34 for mutually rotating one another, so that the raw material accommodating portion 6 is When the lower end portion is press-fitted and fitted to the sealing annular recessed portion 20 of the sealing bottom cover 4, by engaging the same, the sealing bottom cover 4 and the main cover 2 can be surely rotated integrally when the main cover 2 is opened.

However, when the sealing bottom cover 4 is integrally rotated as described above, the torque is applied to the link portion 24 while the lower end portion of the raw material accommodating portion 6 is fitted and detached from the sealing annular recess 20 of the sealing bottom cover 4, Therefore, in order to avoid this, the inner lid 3 is fitted to the bottle mouth portion 100a with a pressure contact force that does not follow the rise of the main lid 2 but oscillates following the rotation of the inner lid 3.

When the main cover 2 is raised while rotating, the lower end portion of the raw material storage portion 6 is fitted and detached from the sealing annular recess 20 of the sealing bottom cover 4, and the tooth portion 33 on the inner cover 3 side is densely closed. The engagement of the tooth portion 34 on the side of the cover cap 4 is also disengaged, and the seal bottom cover 4 is separated as shown by the alternate long and short dash line in FIG. 21, and the inner cover 2 and the inner cover 3 are separated, and the lower end opening of the material receiving portion 6 is opened by the connecting rod. The portion 24 is in a state of being suspended from the inner lid 3, and its state is maintained by the spring restoring force of the link portion 24.

(industrial availability)

The cap of the present invention is not limited to a PET bottle, and can be applied to other containers such as bottles and cans.

1‧‧‧ caps

2‧‧‧Main cover

3‧‧‧ inner cover

4‧‧‧ Sealing the bottom cover

5‧‧‧ Cover body

5a‧‧‧ top

5b‧‧‧胴

6‧‧‧Material containment department

7‧‧‧Threading Department

10‧‧‧Locking ring

11‧‧‧Side seals for side seals

12‧‧‧ Ratchet teeth as one-way meshing

15, 16‧‧‧Locked ring

17‧‧‧锷

19‧‧‧Departure Department

20‧‧‧Circular recess for sealing

21‧‧‧ as a protrusion of the shaft coupling

24‧‧‧ Linkage Department

26‧‧‧Combination hole

100‧‧‧Pet Bottle

100a‧‧‧ Bottle mouth

100b‧‧ Thread Department

100c‧‧‧annular protrusion

101‧‧‧Materials

Claims (26)

A bottle cap characterized in that: the bottle cap is composed of a main cover, an inner cover, and a sealing bottom cover, and the main cover is inserted into a cylindrical material receiving portion of the bottle mouth portion, and is integrally provided On the screw cap that closes the mouth of the bottle, that is, the cap body portion, the inner cap is in the shape of a cylinder that accommodates the material receiving portion thereof and has a strength that rises relative to the mouth of the bottle with the opening of the cap that does not follow the main cap. The method is embedded in the mouth of the bottle, and the sealing bottom cover is fitted with the lower end opening portion of the raw material accommodating portion to close the lower end opening thereof, and is coupled to the inner cover by the elastic link portion, and The opening of the lower end opening portion of the raw material accommodating portion and the sealing bottom cover is separated by the rotation of the opening of the main cover, and the sealing bottom cover opens the lower end opening of the raw material accommodating portion. And hanging from the inner cover by the link portion. The bottle cap according to claim 1, wherein a raw material filling port filled with the raw material is formed on the top of the cover body of the main cover, and the raw material filling port is closed by the closing member. The bottle cap of claim 2, wherein the closure member is an integral filling filling cap on the top of the cap body. The bottle cap according to claim 1, wherein an annular projection that is pressed against the inner peripheral surface of the mouth of the bottle is formed on the outer peripheral surface of the inner lid. The bottle cap according to claim 2, wherein an annular projection that is pressed against the inner peripheral surface of the bottle mouth portion is formed on the outer peripheral surface of the inner lid. The bottle cap according to claim 3, wherein an annular projection that is crimped to the inner peripheral surface of the mouth of the bottle is formed on the outer peripheral surface of the inner lid. The bottle cap of claim 1, wherein the sealing bottom cover is integrally formed with the inner cover and has a separating portion formed at a boundary thereof, and the sealing bottom cover is caused by the rotation of the opening of the main cover The rotation is separated from the inner cover at the separation portion. The bottle cap of claim 2, wherein the sealing bottom cover is integrally formed with the inner cover and has a separating portion formed at a boundary thereof, and the sealing bottom cover is caused by the rotation of the opening of the main cover The rotation is separated from the inner cover at the separation portion. The bottle cap of claim 3, wherein the sealing bottom cover is integrally formed with the inner cover and has a separating portion formed at a boundary thereof, and the sealing bottom cover is caused by the rotation of the opening of the main cover The rotation is separated from the inner cover at the separation portion. The bottle cap of claim 4, wherein the sealing bottom cover is integrally formed with the inner cover and has a separating portion formed at a boundary thereof, and the sealing bottom cover is caused by the rotation of the opening of the main cover The rotation is separated from the inner cover at the separation portion. The bottle cap of claim 5, wherein the sealing bottom cover is integrally formed with the inner cover and has a separating portion formed at a boundary thereof, and the sealing bottom cover is caused by the rotation of the opening of the main cover The rotation is separated from the inner cover at the separation portion. The bottle cap of claim 6, wherein the sealing bottom cover is integrally formed with the inner cover and has a separating portion formed at a boundary thereof, and the sealing bottom cover is caused by the rotation of the opening of the main cover The rotation is separated from the inner cover at the separation portion. A cap according to any one of claims 7 to 12, wherein the sealing bottom cover and the link portion are joined by a shaft coupling that allows the former to rotate. The bottle cap according to any one of claims 7 to 12, wherein the outer peripheral surface of the sealing bottom cover integrally protrudes with an anti-offset portion that can abut against the neck portion of the bottle mouth portion. The bottle cap of claim 13, wherein the outer surface of the sealing bottom cover is integrally provided with an anti-offset portion that can abut against the neck portion of the bottle mouth portion. The bottle cap according to any one of claims 1 to 6, wherein the sealing bottom cover is continuous with the connecting rod and the inner cover in a state of being separated from the inner cover and being integrated with the inner cover Formed, and the inner cover is idly inserted into the mouth of the bottle. The bottle cap according to any one of claims 1 to 12, wherein a peripheral edge of the inner cover is formed between the periphery of the mouth of the bottle and the body of the cover of the main cover. Crotch. The bottle cap of claim 13, wherein a peripheral portion of the inner lid is formed with a crotch portion held between the periphery of the bottle mouth portion and the cap body portion of the main cap. The bottle cap of claim 14, wherein a peripheral portion of the inner lid is formed with a crotch portion held between the periphery of the bottle mouth portion and the cap body portion of the main cap. A bottle cap according to claim 15 wherein a peripheral portion of the inner lid is formed with a crotch portion held between a peripheral edge of the mouth portion and a cap body portion of the main cap. The bottle cap of claim 16, wherein a peripheral portion of the inner lid is formed with a crotch portion held between the periphery of the bottle mouth portion and the cap body portion of the main cap. The bottle cap of claim 17, wherein the cover portion of the inner cover and the cover body portion of the main cover are formed to be engaged with the rotation of the cover of the main cover, and the engagement of the rotation of the cover is disengaged. One-way meshing portion. The bottle cap of claim 18, wherein the cover portion of the inner cover and the cover body portion of the main cover are formed to be engaged with the rotation of the closing direction of the main cover to cause meshing disengagement for the rotation of the opening direction One-way meshing portion. The bottle cap of claim 19, wherein the cover portion of the inner cover and the cover body portion of the main cover are formed to be engaged with the rotation of the closing direction of the main cover, and the engagement is disengaged from the rotation of the opening direction. One-way meshing portion. For example, the bottle cap of claim 20, wherein the cover of the inner cover and the cover of the main cover The body portion is formed with a one-way meshing portion that engages with the rotation of the closing direction of the main cover and that engages and disengages the rotation in the opening direction. The bottle cap of claim 21, wherein the cover portion of the inner cover and the cover body portion of the main cover are formed to be engaged with the rotation of the closing direction of the main cover to cause meshing disengagement for the rotation of the opening direction One-way meshing portion.