JP5950730B2 - Container cap - Google Patents

Description

  The present invention relates to a cap attached to a mouth portion of a container.

  Conventionally, a container with a stopper during transition provided with an overcap, a stopper during transition and a dispensing cylinder member is known. This type of container is used to prevent the contents from scattering from the opening of the dispensing cylinder member due to impact when the dispensing cylinder member is attached to the container after filling the contents such as dressing. By attaching a stopper during transition to the outlet tube member in advance, the contents are prevented from scattering.

  Further, since the stopper is transitionally fitted to the overcap during the transition, it can be opened simply by unscrewing the overcap. Furthermore, since the sealing part is provided in the stopper during the transition through the breaking part, there is an advantage that the opening can be clearly understood by the cutting sound of the breaking part at the time of opening (see Patent Document 1).

JP 2012-46209 A

  The above prior art containers have various functions. However, since a great deal of force is required to cut the fractured portion at the time of opening, the opening is difficult. In other words, the broken portion is cut when the overcap with the stopper fitted during the transition is screwed off. And women and children cannot easily attach and detach. Furthermore, there is a possibility that a part of the broken part remains without being cut, and the sealing part is screwed off from the dispensing cylinder member in a state where the sealing part is stuck to the stopper during the transition.

  In addition, when the consumer accidentally drops the container, the impact of the drop is transmitted to the stopper during the transition through the overcap, so that the stopper is loosened or deformed during the transition. There is a risk of the contents leaking out.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a container cap that can easily and reliably cut a fractured portion and is excellent in openability. Another object of the present invention is to provide a cap of a container that can prevent the cap from being broken from an impact caused by dropping of the container and prevent the contents from leaking out.

  In the present invention, a tapered screw cap having a zenith portion and a trunk portion and provided with a tamper-evidence band via a bridge, and an engagement protrusion engaging with the zenith portion stand on the inner surface of the top wall. In a container cap provided with an overcap provided and an inner plug having an extraction tube portion attached to the container mouth portion, the barrel portion of the screw cap extends in the axial direction on the outer peripheral surface thereof. A knurl comprising ridges and recesses alternately adjacent in the circumferential direction is formed, and the inner surface of the top wall of the overcap is narrower than the width of the recesses on the inner surface of the outer cap. And an inner ring in which a convex portion located between the ridges is formed on the inner peripheral surface when the overcap is fitted to the screw cap. The container cap.

Further, according to the present invention, a locking small protrusion extending in the height direction is formed at the circumferential center of the concave strip, and the overcap is hit by the overcap against the screw cap. The cap of the container characterized by holding the position of the convex portion at a position closer to the opening direction of the concave line when the stopper is attached . Further, the present invention is the container cap, wherein the screw cap is screwed onto the inner plug.

  The present invention provides play between the overcap and the screw cap so that the overcap can be rotated within a predetermined range relative to the screw cap. The ridges of the screw cap can generate an urging force in the opening direction on the overcap with almost no load until they come into contact with each other. Therefore, it can be opened easily as compared with the conventional example.

  The present invention also reduces the impact by play when the consumer accidentally drops the container. Thereby, while preventing a deformation | transformation of the stopper during a transition, since the loosening of a screw cap is prevented, the leakage of the contents can be prevented effectively.

  Further, according to the present invention, the screw cap is screwed to the inner plug with a thread, and the screw cap and the overcap are securely locked by the knurled screw cap and the convex portion of the overcap. The rotational force can be reliably transmitted to the screw cap. Thereby, it can open reliably, without the cutting defect of a bridge | bridging (breaking part) producing.

It is a figure which shows 1st Embodiment of this invention, and is a fragmentary sectional view of a front view. It is an enlarged plan view which shows the screw cap of 1st Embodiment of this invention. It is a figure which shows the overcap of 1st Embodiment of this invention, and is the principal part enlarged view in a bottom view. It is a figure which shows the relationship between the knurling of the screw cap of 1st Embodiment of this invention, and the convex part of an overcap, and is a figure which shows the mode at the time of completion | finish of a stoppering. It is a figure which shows the relationship between the knurling of the screw cap of 1st Embodiment of this invention, and the convex part of an overcap, and is a figure which shows the mode at the time of lid opening. It is a figure which shows the relationship between the knurling of the screw cap of 1st Embodiment of this invention, and the convex part of an overcap, and is a figure which shows the mode at the time of a lid closing. It is a figure which shows 2nd Embodiment of this invention, and is a figure equivalent to FIG. 4A and FIG. 4C. It is a figure which shows 2nd Embodiment of this invention, and is a figure equivalent to FIG. 4B. It is a figure which shows the relationship between the knurling of the screw cap of 2nd Embodiment of this invention, and the convex part of an overcap, and is a figure which shows the mode in the middle of a lid closing.

  A first embodiment of the present invention will be described with reference to FIGS. The cap C is a synthetic resin cap used by being attached to the container B. The cap C includes an overcap 1, a screw cap 2, and an inner plug 3.

  The inner plug 3 has a threaded pipe 303 formed on the outer peripheral surface thereof, a tapered pouring tube portion 301 having a mouth portion 302, a top wall 305 continuous with the base portion of the pouring tube portion 301, and an outer peripheral edge of the top wall 305. A side wall 307 is provided. An inner cylinder 306 is erected from the inner surface of the top wall 305, and an engaging projection 308 for engaging with the mouth of the container B is formed at the lower end of the side wall 307. A fitting recess 304 is formed at the lower end of the dispensing cylinder 301.

  The screw cap 2 includes a cap body 201 having a zenith part 202 and a body part 207 and a tamper evidence band 219 connected to the lower end of the body part 207 by a bridge 220. A fitting projection 221 that fits into the fitting recess 304 of the inner plug 3 is formed at the lower end of the inner surface of the tamper evident band 219.

  The zenith portion 202 is a bottomed substantially cylindrical body formed by a top wall 203 and a side wall 204 depending from the outer peripheral edge of the top wall 203. From the inner surface of the top wall 203, there is provided a locking ring 206 for locking the mouth portion 302 of the inner plug 3 together with the side wall 204 when the screw cap 2 is screwed to the inner plug 3. An engagement recess 205 that engages with the engagement protrusion 104 of the overcap 1 is formed at the upper end of the side wall 204.

  The trunk portion 207 includes a peripheral wall 209 formed to have a diameter larger than that of the side wall 204 of the zenith portion 202, and an inclined wall 210 provided so as to bridge between the lower end of the side wall 204 and the upper end of the peripheral wall 209. On the outer peripheral surface 208 of the body portion 207, a knurl 211 is formed which is composed of convex ridges 212 and concave ridges 217 extending in the axial direction and alternately adjacent in the circumferential direction. The ridge 212 has a tip detail 213 formed on the side surface of the inclined wall 210 and a base 214 formed on the side surface of the peripheral wall 209 and wider than the tip detail 213. A thread 218 that can be screwed with the thread 303 of the inner plug 3 is formed on the inner surface of the peripheral wall 209.

  The overcap 1 has a substantially dome-shaped top wall 101 and a skirt wall 103 depending from the outer peripheral edge of the top wall 101. From the inner surface 102 of the top wall 101, an engagement protrusion 104, an inner ring 105, and an outer ring 108 are erected on a concentric circle.

  The engagement protrusion 104 is for fitting the engagement cap 205 of the screw cap 2 so that the overcap 1 can rotate relative to the screw cap 2.

A plurality of convex portions 107 are formed at equal intervals on the inner peripheral surface 106 of the inner ring 105. The convex portion 107 is formed so as to be positioned between the protruding strips 212 of the adjacent screw cap 2 when the overcap 1 is fitted to the screw cap 2, and the width W ₁ thereof is the screw cap 2. It is formed so as to be narrower than the width W ₂ of the recess 217. That is, the convex portion 107 is rotatably held or loosely fitted in a state in which the recess 217 of the screw cap 2 has a play.

In the present embodiment, the convex portion 107 has a width W _{1 that} is approximately 30% of the width W ₂ of the recess 217, and the number thereof is equal to the number of the recess 217 of the screw cap 2. (See FIG. 4A). Note that the width and number of the convex portions 107 can be appropriately adjusted as long as W ₁ <W ₂ .

  The outer ring 108 is formed so that when the overcap 1 is plugged into the screw cap 2, the plugging force is evenly transmitted to the inner plug 3 and plugged securely. The outer ring 108 can be appropriately formed as necessary.

  Next, the operation of this embodiment will be described. After filling the container B with contents such as dressing, the inner plug 3 to which the screw cap 2 is screwed is first attached to the mouth of the container B by a stopper, and then the overcap 1 is screwed by the stopper. The cap 2 is fitted. At this time, the screw cap 2 is held by the overcap 1 so that the convex portion 107 of the overcap 1 is positioned at the approximate center between the convex strips 212 of the adjacent screw cap 2 (see FIG. 4A). ).

  In this embodiment, since there is play between the convex portion 107 of the overcap 1 and the knurled 211 of the screw cap 2 when the overcap 1 is plugged into the screw cap 2, the downward direction plugging is performed. The force does not act in the direction of rotation, and therefore the screw cap 2 can be prevented from loosening.

When the consumer first opens the cap C, when the overcap 1 is rotated in the opening direction A ₁ (counterclockwise in this embodiment), the convex portion 107 is free to play in the opening direction A _1. It moves almost unloaded by L _{1 and} is locked to the side surface 215 of the ridge 212 (see FIG. 4B). At this time, a biasing force is generated in the overcap 1.

Then, when the further rotation of the overcap 1 in the lid opening direction A _1, screw cap 2 is rotated together with the overcap 1 in the unplugging direction. At this time, the fitting protrusion 221 formed on the inner surface of the tamper evident band 219 is fitted into the fitting recess 304. Rotating further overcap 1 in the lid opening direction A ₁ here, only the cap body 201 is rotated together with the overcap 1, bridge 220 connecting the tamper-evident band 219 is cut. Overcap since it is biased during the movement of play allowance L _1, a cutting of the bridge 220 can be easily performed.

Thereafter, when the further rotation of the overcap 1 in the lid opening direction A _1, the screwing of the screw cap 2 and the inner plug 3 are released from the inner plug 3 Screw cap 2 is in a state where the overcap 1 is fitted To be separated.

Next, when the consumer closes, by rotating the overcap 1 in the closing direction A ₂ (clockwise in the present embodiment) with the screw cap 2 fitted, Screw the screw cap 2 onto the inner plug 3 again. At this time, first, the screw cap 2 rotates together with the overcap 1, and the screw 218 of the screw cap 2 and the screw 303 of the inner plug 3 are screwed together.

Thereafter, the threads 218 and 303 are screwed to a certain position, for example, a position where the frictional resistance between the screw cap 2 and the inner plug 3 becomes larger than the engagement force between the engagement protrusion 104 and the engagement recess 205. If you go, only overcap 1 idles, the convex portion 107 is moved to the closing direction a _2.

Then, the convex portion 107 is engaged with the lid opening direction A ₁ side of the side surface 216 of the ridge 212 in the screw cap 2 (see FIG. 4C). Further, when the overcap 1 is rotated in the closing direction A ₂ , the screw cap 2 is also rotated together with that, and the closing of the cap C is completed.

  A second embodiment of the present invention will be described with reference to FIG. The difference from the first embodiment is that a small locking protrusion 222 is formed on the concave strip 217 of the screw cap 2. Since other configurations are the same as those in the first embodiment, description thereof will be omitted.

The locking small protrusion 222 is a protrusion formed so as to extend in the height direction at the center in the circumferential direction of the recess 217. When the overcap 1 is plugged into the screw cap 2, the locking small protrusion 222 positions the convex portion 107 closer to the opening direction A ₁ of the concave strip 217 (on the proximal end side of the convex portion 212). It is for holding the position and positioning the overcap 1 (see FIG. 5A).

By this way, in the present embodiment, since the consumer can be made longer play allowance L ₂ when unsealing the caps C, large urging force generated overcap 1 during unsealing Therefore, it becomes possible to open with a smaller force (see FIGS. 5A and 5B).

  Further, in the present embodiment, if the idling of the overcap 1 when closing the cap C occurs at the final stage of the closing, the convex portion 107 of the overcap 1 is formed immediately before the closing of the cap. When the user gets over the small locking protrusion 222 of the screw cap 3, the hand feels easily, so that the consumer can easily recognize the completion of the closing, and the overcap 1 can be prevented from being overtightened. Accordingly, an unreasonable force is applied to the inner plug 3 to effectively prevent defects such as twisting of the dispensing tube portion 301 of the inner plug 3 (see FIG. 5C).

Although this invention was demonstrated based on the said embodiment, this invention is not limited to the said embodiment, In the range which does not change the summary of invention, it can change suitably. For example, in the first embodiment, the convex portion 107 of the overcap ₁ is positioned substantially at the center between the convex strips 212 of the adjacent screw cap 2, but the concave strip 217 is closer to the opening direction A ₁ ( A configuration may be adopted in which the convex shape 212 is held at a position on the base end side).

  Further, the shape of the overcap 1 can be changed as appropriate. For example, the top wall 101 does not necessarily need to be dome-shaped, and can be planar. Furthermore, the inner ring 105 of the overcap 1 and the engagement protrusion 104 can be formed integrally.

C Cap 1 Overcap 101 Top wall
102 Inner surface 103 Skirt wall 104 Engagement protrusion
105 Inner ring 106 Inner peripheral surface 107 Convex part
108 Outer ring 2 Screw cap 201 Cap body
202 Zenith part 203 Top wall 204 Side wall
205 engaging recess 206 locking ring 207 trunk
208 Peripheral surface 209 Perimeter wall 210 Inclined wall
211 Knurl 212 Convex 213 Tip Detail
214 Base 215 Side (lid side) 216 Side (lid side)
217 Concave 218 Thread 219 Tamper evident band
220 Bridge 221 Mating protrusion 222 Locking small protrusion
3 Inner plug 301 Outlet tube 302 Port
303 Screw 304 Mating recess 305 Top wall
306 Inner cylinder 307 Side wall 308 Engagement protrusion
B container

Claims (3)

A taper screw cap having a zenith part and a body part and provided with a tamper-evidence band via a bridge, and an overhang in which an engagement protrusion engaging with the zenith part is erected on the inner surface of the top wall In a cap of a container provided with a cap and an inner stopper having an extraction tube part attached to the mouth of the container,
On the body of the screw cap, a knurl is formed that extends in the axial direction on the outer peripheral surface thereof and is composed of ridges and recesses that are alternately adjacent in the circumferential direction.
The inner surface of the top wall of the overcap that is outward from the engagement protrusion is formed to be narrower than the width of the recess, and when the overcap is fitted to the screw cap, A cap for a container, characterized in that an inner ring in which convex portions located between the ridges are formed on the inner peripheral surface is erected. A locking small protrusion extending in the height direction is formed in the circumferential center of the concave stripe ,
The locking small protrusion holds the position of the convex portion at a position closer to the opening direction of the concave strip when the overcap is plugged into the screw cap. Item 14. A container cap according to Item 1.   The container cap according to claim 1 or 2, wherein the screw cap is screwed onto a screw portion provided in an extraction tube portion of the inner plug.

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