JP4340313B2 - Bottle cap - Google Patents

Description

  The present invention relates to a bottle cap that has a raw material container that contains a powdery or liquid raw material, and that releases the raw material into a bottle by dropping the bottom cover of the raw material container in accordance with the opening operation.

  Conventionally, as this kind of bottle cap, for example, there are those described in Patent Document 1 (Japanese Utility Model Publication No. 44-12957) and Patent Document 2 (Japanese Patent No. 3281730).

  Patent Document 1 describes a cylindrical packing (outer cylinder) made of a flexible resin, a lid (cap) having a cylindrical body (inner cylinder) serving as a raw material container, and an annular protruding edge (鍔). Part), and the packing is inserted into the mouth of the bottle, and the stopper is inserted into the bottom opening of the cylinder to seal the cylinder. The mouth is closed by screwing into the mouth. When the lower end of the packing is sunk and the mouth of the bottle is completely closed with the lid, the annular protruding edge of the push plug is engaged with the lower end of the packing. When the lid is turned in the opening direction with respect to the mouth of the bottle, the cylinder rises with the lid, but since the push-in stopper is restricted from rising at the lower end of the packing, the powder falls off the cylinder and is contained in the cylinder. Is released into the bottle.

Further, in the case of Patent Document 2, a flange is extended to the inner periphery of a fitting tube portion that is fixedly fitted in and fixed to the outer periphery of the bottle neck of the bottle, and the support tube portion is integrated from the inner periphery of the flange. A connecting member (outer cylinder) that is suspended, a cap that has a storage cylinder (inner cylinder) suspended from the center of the rear surface of the top wall, and a liquid-tight and detachable fit to the lower end of the storage cylinder A dish-shaped bottom lid having the upper portion as a raw material storage portion, and a first screw thread is provided around the lower part of the outer periphery of the fitting tube portion of the connecting member (outer tube). A second screw thread is provided above the area, and a screw threaded to be engaged with the first screw thread is provided at the inner peripheral lower portion of the peripheral wall of the cap. The cap is connected to the connecting member (outer cylinder). When the cap is turned up and lifted, the upper surface of the peripheral edge of the bottom cover is supported before the cap screw is disengaged from the first screw of the connecting member (outer cylinder) and idles. So that the fall off is engaged with the lower end of the cylindrical portion. The bottom cover is provided with a seal cylinder portion that is fitted to the lower end portion of the inner periphery of the storage cylinder portion of the cap at the peripheral edge portion of the upper surface of the bottom wall to maintain liquid tightness.
Japanese Utility Model Publication No. 44-12957 (first page, FIG. 1, FIG. 2) Japanese Patent No. 3281730 (Page 2, FIGS. 1 and 3)

However, although the thing of patent document 1 is pushing the pushing stopper (bottom lid) into the cylinder (inner cylinder) which is a raw material accommodating part, it is difficult to ensure the airtightness between these, The air containing the moisture penetrates into the cylinder (inner cylinder) which is the raw material container, and the raw materials such as powder come into contact with oxygen and moisture, thereby causing alteration and decay .

In order to ensure the liquid-tightness between the storage cylinder part of the cap and the bottom cover, the one described in Patent Document 2 is fitted on the lower end of the inner periphery of the storage cylinder part of the cap on the upper surface of the bottom cover. Although the seal cylinder part is erected, it is difficult to ensure airtightness, and air containing moisture in the bottle penetrates into the storage cylinder part. Invite corruption .

The first problem of the present invention is that airtightness is high when the lower end opening of the raw material storage portion is sealed with a bottom lid, and it is possible to accurately prevent deterioration or decay of the powder stored in the raw material storage portion. At the same time, there is a structure in which no liquid remains due to the gap.
The second object of the present invention is to allow the bottom lid to be suspended from the cap after dropping, thereby preventing adverse effects and accidental ingestion due to free floating.

The present invention includes a parent cap having an outer cylinder to be inserted into a bottle mouth, a child cap having an inner cylinder to be inserted into the outer cylinder and serving as a raw material storage section, and a lower end opening of the inner cylinder. A bottom lid that seals on the outside of the cylinder, covers the parent cap over the mouth of the bottle, and by screwing the child cap onto the outer cylinder of the parent cap, the mouth of the bottle together with the upper end opening of the outer cylinder In the bottle cap in which the bottom cap is removed from the inner cylinder by the outer cylinder by turning the child cap in the opening direction with respect to the outer cylinder of the parent cap, the parent that is screwed into the mouth of the bottle The cap body of the cap is provided integrally with the outer cylinder so as to protrude up and down of the cap body, and the upper portion of the outer cylinder protruding outside the mouth of the bottle has a screwed mouth portion and cap Bottle hanging from the body The lower part of the outer cylinder to be inserted into the mouth part is a hanging cylinder part that tapers downward below its lower end while forming a gap with the trunk part of the cap body and opens at the lower end, The hanging cylinder part is formed with a vertically long discharge notch that penetrates the inside and outside and extends upward from the lower end to the middle, and the inner cylinder extends from the lower surface of the top part of the cap body of the child cap to the body of the cap body. The cap body is formed so as to protrude longer while forming a gap between the cap portion and the cap body on the lower surface of the top of the cap body at a position close to the outer periphery of the inner cylinder. A ring projecting integrally, and an annular lower peripheral edge portion of the body of the cap body is separable from an upper portion thereof, and a projecting edge bulging outward is formed at a lower end edge of the inner cylinder, The lid has a convex upper surface and a concave lower surface A recessed portion, a protrusion integrally projecting downward from the concave bottom surface, and a peripheral wall portion forming an annular groove with the depressed portion are formed, and the depressed portion is press-fitted into the inner cylinder. Then, the lower end opening edge of the inner cylinder is press-fitted into the annular groove, and the protruding edge is forcibly fitted into the annular groove, thereby sealing the lower end opening of the inner cylinder with a bottom lid, The sealing ring of the child cap is filled by filling the raw material together with the pressure gas into the inner cylinder, screwing the cap body of the child cap into the threaded mouth of the parent cap, and sealing the threaded mouth. The top of the cap body of the child cap is pressed against the upper end of the outer cylinder, and the sealing ring sandwiches the threaded mouth of the outer cylinder from the inside and outside with the body of the cap body of the child cap. In addition, the cap body of the parent cap The lower peripheral edge portion of the body portion of the cap body of the child cap is fixed to be non-rotatable with respect to the threaded mouth portion of the outer cylinder by screwing and tightening to the child cap, and the child cap is attached to the parent cap When rotating in the opening direction with respect to the outer cylinder, the lower peripheral edge portion of the body portion of the cap body of the child cap is separated from the upper portion thereof, and the child cap is left in the threaded mouth portion of the outer cylinder. By raising, the peripheral wall portion of the bottom lid comes into contact with the lower end opening edge of the outer cylinder, the bottom lid is restricted from following up with the inner cylinder, the bottom lid is dropped from the inner cylinder, and the raw material in the inner cylinder is It is designed to be ejected into the bottle together with the pressure gas.

The invention according to claim 2 is the invention according to claim 1, wherein stepped portions are respectively formed in the middle of the inner peripheral surface of the outer cylinder and in the middle of the outer peripheral surface of the inner cylinder, and these stepped portions are parent caps. When the upper end opening of the cap is closed, it faces the top and bottom.

According to the present invention, a discharge notch extending through the inside and outside and extending upward from the lower end to the middle is formed in the hanging cylinder portion hanging from the cap main body of the parent cap, which is the lower portion of the outer cylinder of the parent cap. Therefore, since it communicates with the inside of the bottle through the discharge notch, the liquid in the gap between the outer cylinder and the inner cylinder of the child cap can be discharged through the discharge notch .
In addition, a protruding edge is formed on the lower end edge of the inner cylinder, and the bottom cover has a structure in which the upper surface is convex and the lower surface is concave, and the concave portion is integrated downward from the concave lower surface. And a pressing portion that forms an annular groove, and presses the pressing portion into the inner cylinder, and presses the lower end opening edge of the inner cylinder into the annular groove. Since the lower end opening of the inner cylinder is sealed, the airtightness of the bottom lid is high.
Furthermore, since a downward projection is integrally provided on the concave bottom surface of the bottom lid, sealing with the bottom lid can be automated by gripping this projection with a jig during assembly, and the dropped bottom lid Directionality can be imparted when settling in the liquid in the bottle.

According to the invention which concerns on Claim 2, the step part was each formed in the middle of the inner peripheral surface of the outer cylinder, and the middle of the outer peripheral surface of the inner cylinder, and these step parts closed the upper end opening of the parent cap with the child cap. Since it is opposed to the upper and lower sides, it is possible to prevent the liquid in the bottle from penetrating and rising between the inner peripheral surface of the outer cylinder and the outer peripheral surface of the inner cylinder.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 5 show a bottle cap according to a first embodiment of the present invention. FIGS. 1 and 2 are a state before assembly, FIG. 3 is an assembled state, FIG. 4 is a set state in a bottle, and FIG. It is an operating state. As shown in FIGS. 1 and 2, the bottle cap includes a parent cap 1, a child cap 2, and a bottom lid 3 that are resin-molded.

  The parent cap 1 is integrally provided with an outer cylinder 6 whose upper and lower ends are open on a cap body 5 that covers a mouth portion 50a of a bottle 50 such as a plastic bottle. The outer cylinder 6 integrally penetrates the top part 5a of the cap body 5 vertically, and the upper part protruding upward from the top part 5a becomes a mouth part 6a whose upper end is open, and the lower part protruding downward from the top part 5a. Is a hanging cylinder portion 6b that hangs downward from its lower end and opens at its lower end while forming a gap with the body portion 5b of the cap body 5. The drooping cylinder portion 6b is tapered with a step near the top portion 5a, and then gradually tapers toward the lower end opening. At the lower end of the drooping cylinder portion 6b, rectangular convex portions 7 for preventing the bottom lid 3 from rotating are provided at one location or at two opposing locations. In addition, a minute step portion 6c that slightly increases the thickness is formed in the middle of the inner peripheral surface of the hanging cylinder portion 6b.

  As shown in FIG. 4, a female screw 5 c that engages with a male screw of the mouth part 50 a of the bottle 50 is formed on the inner peripheral surface of the body part 5 b of the cap body 5. A male screw 6d is formed on the outer peripheral surface. An anti-slip knurl 5d is formed on the outer peripheral surface of the body portion 5b when the finger is put on it.

  Further, as shown in FIG. 21, a discharge groove 6 e extending upward from the lower end to the middle is formed in the hanging cylinder portion 6 b of the outer cylinder 6.

  The child cap 2 integrally protrudes from the lower surface of the top portion 8a of the cap body 8 with the inner cylinder 9 serving as a raw material and pressurized gas filling section (capsule), and is thin at a position close to the outer periphery of the inner cylinder 9. A short sealing ring 10 is integrally projected. The inner cylinder 9 protrudes much longer than that while forming a gap with the body portion 8b of the cap body 8. The inner cylinder 9 is slightly smaller in diameter than the outer cylinder 6 and can be inserted with a slight gap between the inner cylinder 6 but the length is slightly longer than the outer cylinder 6. Yes. A male screw 9 a having a small number of screw threads is formed at the lower end portion of the outer peripheral surface of the inner cylinder 9. The inner cylinder 9 has the same inner diameter from the terminal end to the lower end, but the outer diameter gradually decreases from the upper end to the lower end so that the thickness of the inner cylinder 9 is gradually reduced. Further, on the outer peripheral surface of the inner cylinder 9, a minute step portion 9 c that is slightly thinned is formed.

  An annular lower peripheral edge portion 8c of the trunk portion 8b of the child cap 2 can be separated from an upper portion thereof by a cut 8d extending over the entire circumference. On the inner peripheral surface of the body portion 8b above the notch 8d, a female screw 8e that is screwed with the male screw 6d of the mouth portion 6a of the outer cylinder 6 is formed. As shown in FIG. 3, the female screw 8e is screwed into the male screw 6c, and the child cap 2 is moved to the mouth of the outer cylinder 6 until the annular lower peripheral edge portion 8c forcibly exceeds the end of the male screw 6d. If it covers 6a, mouth part 6a will be sealed airtight and liquid-tight. At this time, the child cap 2 has an annular lower peripheral edge portion 8c fixed so as not to rotate with respect to the mouth portion 6a, and a lower end portion having a male screw 9a of the inner cylinder 9 is connected to the hanging cylinder portion 6b of the outer cylinder 6. The minute step portion 9c in the middle of the outer peripheral surface of the inner cylinder 9 and the minute step portion 6c in the middle of the inner peripheral surface of the outer cylinder 6 are close to each other and vertically face each other. Further, the sealing ring 10 is press-fitted into the mouth portion 6 a of the outer cylinder 6, the top portion 8 a of the child cap 2 is pressed against the upper end of the outer tube 6, and the sealing ring 10 is connected to the corner portion of the trunk portion 8 b of the child cap 2. Thus, the mouth portion 6a of the outer cylinder 6 is clamped from inside and outside. An anti-slip knurl 8f is formed on the outer peripheral surface of the body portion 8b, and an arrow 8g is provided on the top surface of the top portion 8a so as to indicate the opening direction.

  The bottom cover 3 includes a pressing portion 3a having a convex upper surface and a concave surface on the lower surface, a peripheral wall portion 3c having a J-shaped cross section with a peripheral edge of the pressing portion 3a, and a concave surface of the pressing portion 3a. A protrusion 3d protruding downward from the center of the lower surface is integrally molded. A female screw 3e with a small number of threads is formed in the annular groove 3b, that is, on the inner peripheral surface of the peripheral wall 3c. The female screw 3e and the male screw 9a at the lower end of the inner cylinder 9 are screwed together. The bottom lid 3 is fitted to the lower end of the inner cylinder 9 filled with the pressure gas and the raw material 11 by fitting the lower end of the inner cylinder 9 into the annular groove 3b and pushing the pushing part 3a into the inner cylinder 9. Is hermetically and liquid tightly sealed. Moreover, the rectangular recessed part 3f for the rotation prevention with respect to the outer cylinder 6 is provided in the peripheral wall part 3c in one place or two places which oppose. The bottom lid 3 is prevented from rotating with respect to the outer cylinder 6 by fitting the recess 3 f with the convex part 7 of the outer cylinder 6 so as to be detachable.

  In addition, the recessed part and convex part for rotation prevention of the bottom cover 3 are good also considering the outer cylinder 6 side as a recessed part, and making the bottom cover 3 side a convex part.

  The raw material 11 to be filled in the inner cylinder 9 includes green tea, coffee, black tea, concentrated minerals, deep sea water extracted minerals, health foods, drugs, concentrated fruit juices, dairy products, alcohol, concentrated vegetables, soup ingredients, vitamins, sugars , Herbs, fermenting bacteria, etc. in powder, granule, tablet or liquid. Moreover, as the pressure gas, an inert gas that can safely maintain the quality of the raw material 11 is good, and examples thereof include nitrogen, helium, argon, carbon dioxide, nitrous oxide, or a mixed gas thereof.

  The bottom lid 3 is connected to the outer cylinder 6 by a flexible connecting piece 12. The upper end of the connecting piece 12 is fixed to the outer peripheral surface of the outer cylinder 6, and the lower end is fixed to the lower surface of the bottom cover 3. When the bottom cover 3 is removed from the inner cylinder 9, the connecting piece 12 is in a substantially straight state. And the bottom cover 3 is suspended from the outer cylinder 6. The bottom cover 3 can be resin-molded integrally with the outer cylinder 6 (parent cap 1) together with the connecting piece 12.

  In the bottle cap of the first embodiment, the parent cap 1, the child cap 2 and the bottom lid 3 are assembled as shown in FIG. 3, and the inner cylinder 9 is filled with the raw material 11 together with a pressure gas such as an inert gas. Are sealed with the bottom lid 3, and the mouth portion 6 a of the outer cylinder 6 is sealed with the cap body 8 of the child cap 2, and the bottom lid 3 is fitted with the concave portion 3 f with the convex portion 7 of the outer cylinder 6. Combined with each other, the outer cylinder 6 is prevented from rotating. And when attaching the bottle cap assembled in this way to the mouth part 50a of the bottle 50 such as a plastic bottle as shown in FIG. 4, the outer cylinder 6 is inserted into the bottle mouth part 50a, and the parent cap 1 The bottle mouth part 50a is sealed with the cap body 5 by screwing the female screw 5c of the cap body 5 into the male screw of the bottle mouth part 50a and tightening it tightly.

  The bottle cap thus attached to the bottle 50 is filled with the pressure gas in the inner cylinder 9, so that intrusion of oxygen and moisture into the inner cylinder 9 can be prevented by the internal pressure, and the bottom lid 3 Since the lower end portion of the inner cylinder 9 is fitted in the annular groove 3b and screwed to the inner cylinder 9, even if the inner pressure of the pressure gas is applied to the bottom lid 3, the pressure gas from the inner cylinder 9 is applied. Can be reliably prevented.

  Between the outer cylinder 6 and the inner cylinder 9, the step 6c on the inner peripheral surface of the outer cylinder 6 and the step 9c on the outer peripheral surface of the inner cylinder 6 are close to each other and face each other. It is possible to prevent the liquid inside from penetrating and rising between the inner peripheral surface of the outer cylinder 6 and the outer peripheral surface of the inner cylinder 9.

  Between the mouth 6a of the outer cylinder 6 and the child cap 2, the sealing ring 10 of the child cap 2 is press-fitted into the outer cylinder 6 and the top 8a of the child cap 2 is the upper end of the outer cylinder 6 as described above. Since the sealing ring 10 clamps the mouth portion 6a of the outer cylinder 6 from the inside and outside with the corner portion of the body portion 8b, the air tightness and liquid tightness of the child cap 2 with respect to the mouth portion 6a of the outer cylinder 6 are extremely high. Very expensive.

On the other hand, as shown in FIG. 21, the drooping cylinder portion 6b of the outer cylinder 6 is formed with a vertically long discharge notch 6e that penetrates the inside and outside and extends upward from the lower end to the middle. when leaving 2 the liquid in the bottle 50 is extracted with its inner cylinder 9 from the mouth 6a of the outer tube 6 Note, without leaving liquid between the mouth portion 50a of the outer tube 6 and the bottle 50, this It can be discharged through the discharge notch 6e.

An operation associated with opening the child cap 2 in the mounting state shown in FIG. 4 will be described with reference to FIG.
When a finger is put on the trunk portion 8b of the child cap 2 and rotated in the direction of the arrow from the state shown in FIG. 9A, the annular lower peripheral edge portion 8c of the trunk portion 8b becomes unrotatable with respect to the mouth portion 6a of the outer cylinder 6. Therefore, as shown in FIG. 5B, it is separated vertically at the notch 8d and the lower peripheral edge portion 8c remains as it is, while the upper body portion 8b is rotated by screwing with the mouth portion 6a. While rising. Along with this, the inner cylinder 9 also rises while rotating, but the bottom cover 3 is prevented from rotating with respect to the outer cylinder 6 and therefore does not rotate following the inner cylinder 9 and the child cap 2 is further rotated to rotate the inner cylinder. When 9 is further raised, the male screw 9 a at the lower end of the inner cylinder 9 and the female screw 3 e of the bottom cover 3 are unscrewed, and the bottom cover 3 is released from the lower end of the inner cylinder 9.

  It should be noted that even if a force (twist) is applied to the child cap 2 so that the body portion 8b of the child cap 2 is vertically separated at the notch 8d, the parent cap 1 is firmly fixed so as not to rotate with respect to the mouth portion 50a of the bottle 50. It is tightened.

  The bottom lid 3 released from the lower end of the inner cylinder 9 is pushed down by the pressure gas filled in the inner cylinder 9 as shown in FIG. The bottom lid 3 is released from the outer cylinder 6 and falls off when the fitting with the convex portion 7 at the lower end is released. As a result, as shown in FIG. 4D, the raw material 11 in the inner cylinder 9 is jetted into the bottle 50 together with the pressure gas, and mixed with the liquid in the bottle 50. The dropped bottom lid 3 is suspended from the outer cylinder 6 when the connecting piece 12 is restored to a substantially straight state.

  To drink the liquid in the bottle 50, the child cap 2 is removed from the mouth 6a of the outer cylinder 6, the inner cylinder 9 is extracted from the outer cylinder 6, and the mouth 6a is opened. At that time, if necessary, the child cap 2 is closed again with respect to the mouth portion 6a of the outer cylinder 6 and the bottle 50 itself is shaken. After the raw material 11 is well mixed with the liquid, the child cap 2 is removed.

  It can be confirmed that the bottom lid 3 is dropped by separating the body portion 8b of the child cap 2 vertically at the cut 8d. However, when the bottle 50 can be seen through, the bottom lid 3 It can be visually confirmed that it has dropped out.

  If the parent cap 1 is removed from the bottle 50, the bottom lid 3 can be taken out together with this in the suspended state, so that the recyclability of the bottle 50 is good.

  By providing a notch 8d in the body portion 8b of the child cap 2 and making the annular lower peripheral edge portion 8c non-rotatable with respect to the mouth portion 6a of the outer cylinder 6, it is possible to prevent the child cap 2 from being loosened, If the child cap 2 is not forcibly turned until it is separated by the notch 8d, it will be confirmed that the bottom lid 3 is dropped and the raw material 11 cannot be ejected, but such a structure is not necessarily required.

  6 to 8 show a bottle cap according to a second embodiment of the present invention. FIG. 6 shows an assembled state, FIG. 7 shows a state in which the bottle is set, and FIG. 8 shows an opening state. This corresponds to FIGS. 4 and 5. In the first embodiment, the connecting piece 12 for connecting the bottom lid 3 to the outer cylinder 6 to be suspended is provided. However, in the second embodiment, this is omitted, and the rest is the same as the first embodiment. It is.

  Therefore, in the second embodiment, the bottom lid 3 settles in the liquid in the bottle 50 without being suspended from the outer cylinder 6. 9A shows the state in which the raw material 11 is ejected by turning the child cap 2 in the opening direction, and the bottom cover 3 sinks. FIG. 9B shows the state in which the child cap 2 is closed again. (C) shows the state which is mixing the raw material 11 by shaking the bottle 50, respectively. Since the bottom lid 3 has the projection 3d, the projection 3d is given directionality when it settles in the liquid in the bottle 50.

  10 to 13 show a bottle cap according to a third embodiment of the present invention, FIG. 10 is a sectional view up to assembly, FIG. 11 is a perspective view of a bottom cover, FIG. 12 is a perspective view of a detent member, and FIG. It is sectional drawing of the operation state to do. As shown in FIG. 10A, the bottle cap according to the third embodiment includes a rotation stopper member 4 in addition to the parent cap 1, the child cap 2, and the bottom lid 3.

  The parent cap 1 in the third embodiment is provided with a concave portion 7a at the lower end of the outer cylinder 6 in place of the rotation-preventing convex portion 7 in the first embodiment, but is otherwise the same as the parent cap of the first embodiment. is there. Further, the child cap 2 in the third embodiment has a female screw 9d formed at the lower end of the inner peripheral surface of the inner cylinder 9 in place of the male screw 9a provided at the lower end of the outer peripheral surface of the inner cylinder 9 in the first embodiment. However, the rest is the same as the child cap of the first embodiment.

  The bottom cover 3 in the third embodiment is significantly different from that in the first embodiment. As shown in FIG. 11, the bottom lid 3 is composed of a pressing portion 13a and a flange portion 13b, and a female screw of the inner cylinder 9 is formed on the outer periphery of the pressing portion 13a. A male screw 13c that is screwed with 9d is formed, an annular groove 13d is formed on the outer periphery of the flange portion 13b, and a cross-shaped groove 13e having a trapezoidal cross section is formed on the lower surface of the flange portion 13b.

  The bottom lid 3 seals the lower end opening of the inner cylinder 9 in an airtight and liquid-tight manner when the male screw 13 c is screwed into the female thread 9 d of the inner cylinder 9 and the pushing portion 13 a is pushed into the inner cylinder 9. In the screwing operation at that time, the bottom lid 3 can be rotated using the cross-shaped groove 13e. Since the outer diameter of the flange 13b of the bottom cover 3 is substantially equal to the outer diameter of the lower end of the inner cylinder 9, the inner cylinder 9 can be inserted into the outer cylinder 6 while being sealed with the bottom cover 3, and FIG. As shown in FIG. 3, when the inner cap 9 is inserted into the outer tube 6 to the maximum by covering the child cap 2 over the mouth 6 a of the outer tube 6, the bottom cover 3 comes out of the lower end opening of the outer tube 6.

  As shown in FIG. 12, the anti-rotation member 4 added in the third embodiment is provided with a cross-shaped trapezoidal cross-shaped rib 14b on the inner side of the ring portion 14a, and an annular protrusion on the inner peripheral surface of the ring portion 14a. 14c is formed, and a rectangular convex portion 14d for preventing rotation is integrally projected from two opposing portions of the ring portion 14a. The detent member 4 is connected to the outer cylinder 6 by a flexible connecting piece 12. The upper end of the connecting piece 12 is fixed to the outer peripheral surface of the outer cylinder 6, and the lower end is fixed to the ring portion 14a of the anti-rotation member 4. When the connecting piece 12 is restored to a substantially straight state, the anti-rotation member 4 is removed. The cylinder 6 is suspended. The anti-rotation member 4 can be resin-molded integrally with the outer cylinder 6 (parent cap 1) together with the connecting piece 12.

  The anti-rotation member 4 is formed by combining the parent cap 1, the child cap 2 and the bottom lid 3 as shown in FIG. 10 (B), and then pressing it toward the bottom lid 3 as shown in FIG. The cross-shaped rib 14b having the trapezoidal cross section of the stopper member 4 is forcibly fitted into the cross-shaped groove 13e having the trapezoidal cross section of the bottom cover 3, and the annular protrusion 14 on the inner periphery of the rotation preventing member 4 is The annular groove 13d is forcibly fitted, and the convex portion 14d of the rotation preventing member 4 is detachably fitted to the concave portion 7a at the lower end of the outer cylinder 6.

  As a result, the anti-rotation member 4 and the bottom lid 3 are combined so as not to be separated from each other, and the anti-rotation member 4 holds the bottom lid 3 and is in a non-rotating state with respect to the outer cylinder 6.

  In the case of the bottle cap of the third embodiment, as shown in FIG. 13A, when the child cap 2 is turned in the direction of the arrow, the inner cylinder 9 is also rotated while leaving the annular lower peripheral edge portion 8c of the trunk portion 8b. The bottom lid 3 is prevented from rotating with respect to the outer cylinder 6 by the anti-rotation member 4, and therefore does not rotate following the inner cylinder 9. The child cap 2 is further rotated to further raise the inner cylinder 9. Then, as shown in FIG. 5B, the screwing of the female screw 9d at the lower end of the inner cylinder 9 and the male screw 13c of the bottom cover 3 is released, and the bottom cover 3 is released from the lower end of the inner cylinder 9. .

  The bottom lid 3 released from the lower end of the inner cylinder 9 is pushed down by the pressure gas filled in the inner cylinder 9, and the rotation preventing member 4 is also pushed down together with this, so that the convex portion 14d becomes the outer cylinder. 6 is disengaged from the recess 7 a at the lower end of 6, and the rotation preventing member 4 is released from the outer cylinder 6 and falls off while holding the bottom cover 3. As a result, as shown in FIG. 5C, the raw material 11 in the inner cylinder 9 is ejected at a stretch together with the pressure gas. The fall-off preventing member 4 that has fallen is suspended from the outer cylinder 6 while holding the bottom cover 3 by restoring the connecting piece 12 to a substantially straight state.

  In the case of the bottle cap of Example 3, the anti-rotation member 4 is required, but the assembly is performed after filling the inner cylinder 9 of the child cap 2 with the raw material 11 and the pressure gas and sealing with the bottom lid 3. The sealed inner cylinder 9 is inserted into the outer cylinder 6 as it is, the child cap 2 is put on the mouth portion 6a of the outer cylinder 6, and the anti-rotation member 4 is pressed toward the bottom cover 3 to complete the process. No tools or reversing mechanisms are required, and automation is easy.

  14 to 17 show a bottle cap according to a fourth embodiment of the present invention. FIGS. 14 and 15 show a state before assembly, FIG. 16 shows an assembled state, and FIG. 17 shows a state set in a bottle.

  In the bottle cap of Example 4, the bottom lid 3 is not screwed to the lower end of the inner cylinder 9 of the child cap 2, and the lower end opening of the inner cylinder 9 can be sealed airtight and liquid-tight only by the fitting structure. The others are the same as those in the above embodiment. That is, the internal thread 3e in the annular groove 3b of the bottom cover 3 is omitted, and the cross-section of the annular groove 3b is inverted Ω, while the lower edge of the inner cylinder 9 is a protruding edge 9e that bulges outward. Then, the annular concave groove 3b having a reverse Ω-shaped cross section and the protruding edge 9e bulging outward are forcibly fitted, that is, the lower end portion including the protruding edge 9e of the inner cylinder 6 is connected to the annular concave having an inverted Ω-shaped cross section. The groove 3b is press-fitted and sealed.

  In the case of the fourth embodiment, since the bottom lid 3 is not screwed to the lower end of the inner cylinder 9, there is no need to prevent the bottom lid 3 from rotating around the outer cylinder 6, and the child cap 2 is turned to turn the inner cylinder 9 is raised, the peripheral wall portion 3c of the bottom cover 3 comes into contact with the lower end of the outer cylinder 6 and the bottom cover 3 is restrained from further rising. 3 comes off and falls off. When this falls off, the raw material 11 in the inner cylinder 9 is ejected at a stretch together with the pressure gas. The bottom lid 3 settles in the liquid in the bottle.

  In the case of the fourth embodiment as well, it is needless to say that the bottom cover 3 may be connected to the outer cylinder 5 with a connecting piece, as in the case of the above-described embodiment.

  When the body portion 8b of the child cap 2 is not provided with the annular lower peripheral edge portion 8c separated by the notch 8d, the child cap 2 is prevented from being unintentionally turned and opened in the state of being set in the bottle 50 as shown in FIG. As shown in FIG. 4, the trunk portion 8b of the child cap 2 and the trunk portion 5b of the parent cap 1 are covered with a transparent or translucent shrink film 51. The shrink film 51 is provided with a tear line 51c for vertically dividing the upper part 51a and the lower part 51b, and a tear line 51d for vertically tearing the upper part 51a. At the time of opening, after tearing the upper portion 51a along the tear line 51d, the finger is put on the trunk portion 8b of the child cap 2 and turned. Then, the shrink film 51 is separated vertically by the cut line 51c, and the upper portion 51a covering the trunk portion 8b of the child cap 2 is removed, but the lower portion 51b is as shown in FIG. The body portion 5b of the parent cap 1 remains covered. It turns out that the said bottle cap was opened by becoming such a state. This can be applied to any of Examples 1 to 4 described above.

  In the above embodiment, the pressure gas is sealed in the inner cylinder 9 so that the raw material 11 in the inner cylinder 9 does not deteriorate or decay due to contact with oxygen or moisture, but as shown in FIG. In addition, either or both of the oxygen absorber and the dehumidifier 21 may be enclosed in the inner cylinder 9. In that case, the oxygen scavenger or dehumidifier 21 is placed in the porous container 22 and the container 22 is press-fitted to the inner end of the inner cylinder 9. In addition to the press-fitting, a pressure gas may be enclosed.

FIG. 22 illustrates a method for automatically performing from the assembly of the bottle cap according to the present invention to the filling of the pressure gas and the raw material and the mounting to the bottle.
In the case of the bottle caps of Example 1 and Example 2, as shown in FIG. 20 (1), the parent cap 1 is inverted and the bottom lid 3 is set on the outer cylinder 5. As shown in FIG. 2B, the child cap 2 is turned upside down, and the raw material 11 is quantitatively charged from the raw material hopper 52 into the inner cylinder 9.

  As shown in FIG. 3 (3), the parent cap 1 and the child cap 2 are placed in the pressure chamber 54 of the filling machine 53, the inside of the pressure chamber 54 is evacuated by the vacuum pump 55, and then the pressure is supplied from the pressure gas supply device 56. An inert gas such as nitrogen is supplied as a gas.

  As shown in FIG. 4 (4), the child cap 2 is screwed into the parent cap 1 by the screwing device 58 while the bottom lid 3 is fixed with the jig 57 in the pressure chamber 54, and the raw material is And the inner cylinder 9 filled with the pressure gas is sealed, and then the whole is inverted.

  On the other hand, as shown in FIG. 5 (5), the bottle 50 is filled with a liquid by a bottling machine 59. Then, as shown in FIG. 6 (6), the parent cap 1 is screwed and tightened to the mouth portion 50 a of the bottle 50 with the screw capper 60. When not using screwing, the parent cap 1 is forcibly fitted to the mouth of the bottle 50 by the press capper 61 as shown in FIG.

  In the above-described embodiment, the case where the bottle portion 50a is applied to the bottle 50 having a narrowed mouth portion 50a has been described. However, the bottle cap according to the present invention has a mouth portion as shown in FIGS. It can also be applied to a wide-mouthed bottle that is the same size as the body.

In the state before the assembly of the bottle cap of Example 1 of this invention, (A) is a perspective view, (B) is sectional drawing. In the same state, (A) is a perspective view and (B) is a cross-sectional view. In the assembled state of the embodiment, (A) is a front view and (B) is a cross-sectional view. It is sectional drawing of the state set to the bottle of the Example. It is sectional drawing which shows the operation state of opening of the Example in order of (A), (B), (C), (D). In the state which assembled the bottle cap of Example 2 of this invention, (A) is a front view, (B) is sectional drawing. It is sectional drawing of the state set to the bottle of the Example. It is sectional drawing which shows the operation state of opening of the Example in order of (A), (B), (C), (D). It is a perspective view which shows operation until it drinks the liquid in a bottle from opening in order of (A), (B), (C). It is sectional drawing which shows to the assembly about the bottle cap of Example 3 of this invention in order of (A), (B), (C). It is a perspective view of the bottom cover in the Example. It is a perspective view of the detent | locking member in the Example. It is sectional drawing which shows the operation state of opening of the Example in order of (A), (B), (C). In the state before the assembly of the bottle cap of Example 4 of this invention, (A) is a perspective view, (B) is sectional drawing. In the same state, (A) is a perspective view and (B) is a cross-sectional view. In the assembled state of the embodiment, (A) is a perspective view and (B) is a cross-sectional view. It is sectional drawing of the state set to the bottle of the Example. It is a perspective view which shows the usage example which covered the bottle cap by this invention with the shrink film. It is a perspective view of the state which removed a part of shrink film in the same as the above. It is sectional drawing of the Example which enclosed the oxygen absorber or the dehumidifier in the inner cylinder. It is sectional drawing which shows that the groove | channel for discharge | emission is provided in the outer cylinder. It is explanatory drawing which shows an example of the method of performing automatically from the assembly of the bottle cap by this invention to filling of pressure gas and a raw material, and mounting | wearing to a bottle. It is a perspective view of the Example applied to the bottle of a wide mouth. It is sectional drawing same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parent cap 2 Child cap 3 Bottom cover 3a Pushing part 3b Annular groove 3c Circumferential wall part 3d Protrusion 3e Female thread 3f Recessed part 4 Anti-rotation member 5 Cap main body 5a Top part 5b Body part 5c Female screw 5d Knurl 6 Outer cylinder 6a Mouth part 6b Drooping cylinder part 6c Step part 6d Male thread 6e Discharge groove 7 Protrusion part 7a Concave part 8 Cap body 8a Top part 8b Body part 8c Lower peripheral edge part 8d Notch 8e Female thread 8f Knurl 8g Arrow 9 Inner cylinder 9a Male thread 9c Step part 9d Female Screw 9e Protruding edge 10 Sealing ring 11 Raw material 12 Connecting piece 13a Pushing portion 13b Hook portion 13c Male screw 13b Hook portion 13e Cross-shaped groove 14a Ring portion 14b Cross-shaped rib 14c Annular protrusion 14d Convex portion 21 Oxygen scavenger or dehumidifier 22 Container 50 Bottle 50a Bottle mouth part 51 Shrink film 51a Upper part 51b Lower part 51c Cut line 51d Ri tear line 52 feed hopper 53 filling machine 54 pressure chamber 55 a vacuum pump 56 pressure gas delivery system 57 jig 58 threaded device 59 bottling machine 60 screw capper 61 Puresukyappa

Claims (2)

A parent cap having an outer cylinder to be inserted into the mouth of the bottle, a child cap having an inner cylinder to be inserted into the outer cylinder and serving as a raw material storage section, and a lower end opening of the inner cylinder at the outer side of the outer cylinder It consists of a bottom lid to be sealed, and the bottle cap can be sealed together with the upper end opening of the outer cylinder by covering the bottle cap with the parent cap and screwing the child cap onto the outer cylinder of the parent cap. In the bottle cap in which the bottom lid is dropped from the inner cylinder by the outer cylinder by rotating the child cap in the direction to open with respect to the outer cylinder of the parent cap,
The outer cylinder is integrally provided on the cap main body of the parent cap that is screwed into the mouth of the bottle so as to protrude upward and downward of the cap main body, and the upper portion of the outer cylinder that protrudes outside the mouth of the bottle The lower end of the outer cylinder that is inserted into the bottle mouth by hanging from the top of the screw with the threaded mouth opened at the upper end is below the lower end while forming a gap with the body of the cap main body. It is a drooping cylinder that hangs down in a tapered shape and opens at the lower end.
In this hanging cylinder part, a vertically long discharge notch extending through the inside and outside and extending from the lower end to the middle is formed,
The inner cylinder protrudes integrally from the lower surface of the top portion of the cap body of the child cap so as to protrude longer than that while forming a gap with the body portion of the cap body.
On the lower surface of the top of the cap body, a thin short sealing ring is integrally projected at a position close to the outer periphery of the inner cylinder,
Further, the lower peripheral edge portion of the annular body of the cap body is separable from the upper portion thereof,
A protruding edge bulging outward is formed at the lower end edge of the inner cylinder,
The bottom cover includes a pressing portion having a convex upper surface and a concave lower surface, a protrusion integrally protruding downward from the concave lower surface, and a peripheral wall portion forming an annular groove with the pressing portion. Formed,
The pressing portion is press-fitted into the inner cylinder, and the lower end opening edge of the inner cylinder is press-fitted into the annular groove, and the protruding edge is forcibly fitted into the annular groove. Sealing the lower end opening with a bottom lid, filling the raw material together with the pressure gas in the inner cylinder,
By screwing the cap main body of the child cap into the threaded mouth of the parent cap and sealing the threaded mouth, the sealing ring of the child cap is press-fitted into the outer cylinder, and the child cap The top of the cap body is in pressure contact with the upper end of the outer cylinder, and the sealing ring holds the threaded mouth of the outer cylinder from the inside and outside with the body of the cap body of the child cap.
Further, the cap body of the parent cap is screwed into the mouth of the bottle and tightened so that the lower peripheral edge portion of the body of the cap body of the child cap cannot rotate with respect to the threaded mouth of the outer cylinder. Fixed to
When the child cap is rotated in the opening direction with respect to the outer cylinder of the parent cap, the lower peripheral edge portion of the body portion of the cap body of the child cap is separated from the upper portion thereof, and the threaded mouth portion of the outer cylinder is separated. When the child cap is raised while remaining, the peripheral wall portion of the bottom lid comes into contact with the lower end opening edge of the outer cylinder, the bottom lid is restricted from following up with the inner cylinder, and the bottom lid is dropped from the inner cylinder. A bottle cap characterized in that the raw material in the inner cylinder is jetted into the bottle together with the pressure gas.   Steps were formed in the middle of the inner peripheral surface of the outer cylinder and in the middle of the outer peripheral surface of the inner cylinder, and these stepped parts faced up and down when the upper end opening of the parent cap was closed with the child cap. The bottle cap according to claim 1.

Images