JP6230447B2 - Unplug cap - Google Patents

Description

  The present invention relates to a cap having an inner plug having a removable plug body, and more particularly to a stopper cap having an opening mechanism that does not use a pull ring.

  Conventionally, for food containers that contain dressings, seasonings, etc., in order to keep the inside of the container in a sealed state until opening, the removal wall part defined by the weakening part in the inner plug attached to the container mouth part A plug cap is widely used in which a partition wall is formed and a pull ring provided on the removal wall portion is pulled up to tear the removal wall portion and open the spout.

However, a relatively large force is required to pull up the pull ring and break the weakened portion, and it may be difficult for children and the elderly with weak fingertips to open.
Also, depending on how the pull ring is pulled up, the pull ring may be broken in the middle, making it difficult to open.
For this reason, a cap that can be opened not by a pull ring but by a rotation operation of a screwing portion of an overcap is conventionally known as a prior art (see, for example, Patent Document 1).

JP 2011-225220 A

In the cap 1 described in Patent Document 1, the separation portion 4 is disconnected from the main body portion 20 by tightening the screwed portion of the overcap 3, and the separation portion 4 is held by the overcap 3 after opening. And functions as an inner seal plug that seals the opening.
However, unlike the operation at the time of normal opening, the cap 1 is rotated once in the direction in which the screw of the overcap 3 is tightened, and then rotated in the direction in which the screw is loosened. Since it has to be removed and opened, there is a problem that it is difficult for the user to understand and takes time and effort.
In addition, the cap 1 described in Patent Document 1 is sealed and distributed in a tightened state (reference position) in which the overcap 3 is just before the separation portion 4 is separated after filling the contents. Is unstable and has poor workability, and the separation part 4 may be broken and opened carelessly by an impact during transportation.

  An object of the present invention is to solve the above-mentioned problem, and in an unplugging cap that can be opened by rotating the screw of the cap without using a pull ring, after filling the contents, the screw of the cap is completely In addition to being able to be sealed in a stable state, it can be easily opened by the usual opening operation of unscrewing the screw, and it has excellent workability during sealing and operability during opening, An object of the present invention is to provide an unplugging cap that does not have the risk of being unintentionally opened during transportation.

  In order to solve the above-described problems, the present invention provides an inner plug having a spout cylinder that is attached to the mouth portion of the container body as a plug cap and forms a spout to guide the contents, and is screwed into the plug. The inner plug is connected to the inner peripheral surface of the dispensing cylinder via a thinned weakened portion, and has a first engagement protrusion on the inner periphery and a first outer protrusion on the outer periphery. The cap is provided with a cylindrical wall provided with one tooth portion, and the cap hangs from the top plate portion, and a second engagement protrusion that can be engaged with the first engagement protrusion is formed on the outer periphery. An engagement portion, a cutting cylinder portion provided on the outside of the engagement portion and provided with a second tooth portion on the inner periphery, and a screw portion provided on the outside of the cutting tube portion. The portion includes engaging protrusions provided at a plurality of locations in the circumferential direction, and the engaging protrusions are screwed from the outer peripheral surface of the cylindrical wall to the first engaging surface formed in a substantially radial direction from the outer peripheral surface of the cylindrical wall. Direction It has a substantially trapezoidal shape or a substantially right-angled triangular shape in a plan view having a non-engagement surface inclined to the surface, and the second tooth portion is made up of engagement arms provided at a plurality of locations in the circumferential direction. A first tooth portion, comprising: an arm portion that is inclined and extended in an unscrewing direction from the inner peripheral surface of the tube portion; and a tip engagement portion having a second engagement surface provided at a tip end of the arm portion and formed in a substantially radial direction. The second tooth portion adopts a structure that constitutes a ratchet mechanism in which the first engagement surface and the second engagement surface abut and engage only when the cap is screwed off.

In an embodiment of the stopper cap, the radial height of the second engagement surface is the same as or higher than the radial height of the first engagement surface, and the engagement protrusion is not engaged. The mating surface and the arm portion of the engaging arm in the free state are inclined so that they can be brought into surface contact when the cap rotates and the arm portion and the non-engaging surface abut. The inclination angle formed with the tangential direction of the inner peripheral surface of the cutting cylinder portion is in the range of about 30 to 70 °, and an annular groove that fits into the mouth portion of the container body is formed at the lower end of the inner plug. A fitting cylinder portion having an upper wall and an inner cylinder and an outer cylinder suspended from the upper wall is provided, and stoppers are provided at a plurality of circumferential positions on the upper surface of the upper wall. A first abutment surface substantially perpendicular to the disengagement direction and a first inclined surface in the screwing direction are formed, and the stopper is provided at the lower end of the screw cylinder of the cap. Wedge-shaped recess is provided having a second contact surface and the second inclined surface corresponding to the stopper and the wedge-shaped recess, when screwed into the inner plug cap, the first engagement surface and a second contact surface When the abuts, the cap is completely tightened, and the arm portion of the engagement arm is set to abut or just before the abutment surface of the engagement protrusion. Structure: A vertical rib slightly raised in the axial direction in the vicinity of the first inclined surface side of each stopper below the screw on the outer periphery of the screw wall portion provided on the inner peripheral side of the upper wall of the inner plug and formed with a screw A configuration characterized in that is provided.

  As a further embodiment of the stopper cap, a lower end of the outer peripheral wall forming the outer peripheral surface of the cap is provided with a sealing ring connected by a plurality of weakening connecting portions that can be broken, and an inner peripheral surface of the sealing ring is A configuration in which a reduced diameter step portion that can be engaged with a notch step portion provided continuously to a concave surface that is notched on the outer peripheral surface of the outer tube of the stopper is provided, and a lower end of the outer tube of the inner stopper The part is provided with a separation mechanism that can be separated and discarded from the container body, and the separation mechanism is formed through a slit formed in the axial direction over a predetermined arc range of the lower outer peripheral surface of the outer cylinder. Adjacent to the grip part, the longitudinal cutting part formed to be ruptureable in the axial direction at one end part of the grip part, and the slit end part on the other end side of the grip part, and the lower part is cut off except for the grip part The thin-walled start part of the circumferentially minute range formed in a possible manner and the thin-walled start part A notch recess that is notched in the radial direction from the outer peripheral surface of the outer cylinder to match the height of the upper surface of the thin-walled starting portion over a predetermined arc range from the end opposite to the slit end, and a notch recess A thin-walled circumferential cut portion formed to be breakable on the inner peripheral side of the outer cylinder, and a breakable thin-wall radial cut portion that connects the end portion of the thin-walled start portion and the circumferential cut portion. Adopting a configuration characterized by

  The stopper cap of the present invention is engaged only when the cap is screwed between the stopper body connected to the inner peripheral surface of the outlet cylinder of the inner stopper via the thinned weakened portion and the cut cylinder portion of the cap. Since the first and second tooth portions constituting the ratchet mechanism are arranged, it can be opened without using a pull ring, and without performing difficult operations, it is similar to a normal lid opening operation. The cap can be easily opened simply by rotating the cap in the screw releasing direction.

  The first tooth portion has a substantially trapezoidal shape in a plan view having a first engagement surface formed in a substantially radial direction from the outer peripheral surface of the inner wall of the inner plug and a non-engagement surface inclined in the screwing direction. The second tooth portion includes a tip engagement portion having a second engagement surface having a tip formed in a substantially radial direction, and an arm thinner than the tip engagement portion. And a plurality of engaging arms extending in an inclining direction from the inner peripheral surface of the cutting cylinder portion of the cap. When the cap is rotated in the screwing direction, the arm portion of the engaging arm is When the cap is rotated in the unscrewing direction by easily overcoming the inclined non-engagement surface of the engagement protrusion by deformation and the cap is rotated in the screwing direction, the second engagement arm is connected to the first engagement surface of the engagement protrusion. Engagement surface comes into contact and engagement, and the rotational force of the cap is applied to the plug body. , It is possible to prevent inadvertent cap removal it is possible to increase the operability during opening.

It is the perspective view which shows the state before the assembly of the cap and the inner stopper in the first embodiment of the stopper cap, (a) is a perspective view showing the cap in cross section, (b) is a perspective view of the inner stopper. It is a figure which shows the set state immediately after assembling the cap and inner cap in 1st Example of an extraction cap, (a) is front sectional drawing, (b) is a cross-sectional arrow view in the EE line of Fig. (A). FIG. It is a figure which shows the inside stopper of the 1st Example stopper cap, (a) is a top view, (b) is a front view. It is a bottom view of the inside stopper of the first embodiment stopper cap. (A) is a FF cross section arrow view of Fig.3 (a), (b) is a GG cross section arrow view of Fig. (A). 5A is an enlarged view of the main part of the JJ cross-sectional arrow view of FIG. 5B, FIG. 5B is an enlarged view of the main part of the KK cross-sectional arrow view, and FIG. It is a principal part enlarged view of an arrow view. It is a figure which shows the cap of 1st Example stopper cap, (a) is a front half sectional view, (b) is a bottom view. It is the figure which showed the EE cross-sectional arrow view equivalent to FIG.2 (b) in order to demonstrate the ratchet operation | movement of a 1st Example stopper cap, (a) is the operation | movement at the time of fastening a cap to an inside stopper (B) Operation | movement at the time of unscrewing and opening a cap, (c) shows the principal part enlarged view in FIG. (B). FIG. 6 is a diagram showing a sectional view taken along the line G-G corresponding to FIG. 5B in order to explain the operation of the separation mechanism in the stopper cap of the first embodiment, and FIG. (B) shows a state in which the gripping portion is further pulled, the thin-walled initial cut portion 35 and the radial cut portion 38 are broken, and the circumferential cut portion 37 is started to break. It is a figure which shows the state immediately after assembling the cap and inner plug in 2nd Example of a stopper cap, (a) is front sectional drawing, (b) is a sectional arrow directional view in the MM line of Fig. (A). It is.

  Next, the stopper cap of this invention is demonstrated with reference to drawings which showed the Example.

  1-9, A is a container main body, B is an inner stopper with which the container main body A is mounted | worn, C is a cap with which the inner stopper B is screwed and mounted | worn.

As shown in FIG. 2, the mouth portion 1 of the container body A is provided with a locking ridge 2 that is fitted to the inner plug B and is held out.
As shown in FIGS. 3 to 5, the inner plug B includes an outer cylinder 5 on the outer peripheral side, an inner cylinder 6 on the inner peripheral side, and an upper wall 7 positioned on the top surface side of the mouth part 1. A fitting tube portion 4 that forms an annular groove to be fitted, a screw wall portion 8 that is erected and provided on the upper wall 7, and a note that is provided on the upper end of the screw wall portion 8 via a step portion 9. It consists of a delivery tube 10.

The dispensing cylinder 10 forms a spout for dispensing the contents stored in the container main body A, and includes a cylindrical base portion 11 and a lip portion 12 that expands at the top of the base portion 11 and curves outward. Have.
A plug body 16 is integrally connected to the inner peripheral surface of the base portion 11 of the dispensing cylinder 10 via a thinned weakened portion 15 formed over the entire circumference.
The plug body 16 has a cylindrical wall 17 standing upright at the top, and a bottom wall 14 and a thinned weakened portion 15 at the bottom to seal the spout.

On the outer periphery of the cylindrical wall 17, engaging projections 18 constituting one of the first tooth portions of the ratchet mechanism are projected at six locations in the circumferential direction, and the first engaging projection 19 projects in an annular shape on the inner peripheral upper portion. It is installed.
The engagement protrusion 18 is formed on a first engagement surface 20 formed in a substantially radial direction to be engaged with a second tooth portion of the cap B, which will be described later, and is formed on the opposite side in the circumferential direction and is screwed from the outer peripheral surface of the cylindrical wall. It has a non-engagement surface 21 inclined in the direction, and its plan view shape has a substantially trapezoidal shape with the cylindrical wall outer peripheral surface side as the base.
The sides corresponding to the bottom and top sides of the trapezoidal shape in plan view in the engagement protrusion 18 of Example 1 are precisely arcuate, and the substantially trapezoidal shape in the present invention referred to here includes such a case.
In addition, if the engagement protrusion 18 has the 1st engagement surface 20 formed in the substantially radial direction, and the non-engagement surface 21 which inclined, the planar view is not a substantially trapezoid shape but a substantially right triangle shape. But you can.
In this embodiment, the engagement protrusions 18 are provided at six locations in the circumferential direction. However, the engagement projections 18 are not limited to six locations, and can be provided at a plurality of appropriate locations according to the shape of the plug body.

The bottom wall 14 is connected to the outer peripheral side of the cylindrical wall 17 at a predetermined height from the lower surface, and the outer peripheral side of the enlarged diameter portion 22, and gradually becomes thinner toward the outside and thinned. And a flange portion 23 provided continuously to the portion 15.
The screw wall portion 8 is suspended from the outer peripheral edge of the step portion 9 connected to the lower portion of the extraction cylinder 10 at the inner peripheral edge, and a male screw 24 is provided on the outer peripheral surface.
On the outer periphery of the screw wall portion 8 below the male screw 24, a plurality of vertical ribs 25 are provided at a plurality of positions in the circumferential direction.
Further, on the inner peripheral surface of the screw wall portion 8, a reinforcing rib 26 that protrudes in the axial direction with the upper portion connected to the step portion 9 is projected.

In the fitting cylinder portion 4, the upper wall 7 is continuous at the inner peripheral edge at the lower portion of the screw wall portion 8, and the outer tube 5 and the inner tube 6 are suspended from the lower portion of the upper wall 7.
A fitting groove into which the mouth portion 1 of the container main body A is fitted is formed between the outer tube 5 and the inner tube 6, and the inner portion of the outer tube 5 is engaged with the locking protrusion 2 to open the mouth portion. A locking reduced diameter portion 27 is provided to prevent 1 from coming off.
On the upper surface of the upper wall 7, stoppers 28 are provided at a plurality of locations in the circumferential direction, a first contact surface 28a that is substantially perpendicular to the screwing direction is formed, and a first inclined surface 28b is formed in the screwing direction. Has been.
In the present embodiment, the stoppers 28 are provided at three locations, and the same number of vertical ribs 25 are disposed in proximity to the first inclined surface 28b of the stopper 28.

The outer cylinder 5 is provided with an annular notch step portion 29 that is continuous with a reduced-diameter concave surface whose lower portion is notched on the outer peripheral surface, and further, the inner plug B is separated from the container body A and separated therebelow. A sorting mechanism is provided to allow disposal.
As shown in FIGS. 3 to 5, 6 (c), and 9, a grip portion 31 is provided via a slit 30 formed in the axial direction over a predetermined arc range of the lower outer peripheral surface of the outer cylinder 5. 31 is separated from the outer cylinder 5 by the longitudinal cutting part 32 and can be expanded outward.
The vertical cutting part 32 of the gripping part 31 is formed with a hooking concave part 32a for placing a fingertip on the upper part and hooking the gripping part 31. 33 is provided, the slit 30 extends from the longitudinal cutting portion 32 to the start end portion 30a in the direction opposite to the grip portion 31, and the grip portion 31 is integrated with the outer cylinder 5 at the end portion 30b which is the other end portion. .

As shown in FIGS. 3 (a), 4 and 6 (b), the lower portion of the outer cylinder 5 adjacent to the terminal portion 30b of the slit 30 including the engagement reduced diameter portion 27 has a small width d in the circumferential direction. Only the gripping portion 31 is left and is cut out in the radial direction, and a thin start portion 35 that can be broken is formed between the outer cylinder 5 and the gripping portion 31 so as to coincide with the upper end of the gripping portion 31.
As shown in FIG. 6A, the circumferential end of the outer cylinder 5 is aligned with the height of the upper surface of the thin start portion 35 from the circumferential end of the thin start portion 35 on the opposite side to the end portion 30b. A notched recess 36 is provided in the radial direction from the outer peripheral surface over a predetermined range in the direction, and a thin circumferential cutting portion 37 that can be broken is formed on the inner peripheral side of the outer cylinder 5.

Since the notch recess 36 is provided from the circumferential end of the thin-walled start portion 35, it is sandwiched between the notch portion at the bottom of the thin-wall start portion 35 and the notch recess 36 above the thin-wall start portion 35, A thin-walled radially cut portion 38 that is continuous to the thin-walled initial cut portion 35 and the circumferential-direction cut portion 37 is formed.
The circumferential cut portion 37 provided with the notch recess 36 is preferably formed over an arc range having at least a central angle of 180 ° or more. In this embodiment, the notch recess 36 is formed over an arc range of about 270 °. The terminal portion 36a reaches the portion where the slit 30 is provided.
Further, in the present embodiment, the slit 30 is formed over an arc range of about 110 °, and the longitudinal cut portion 32 is disposed in the grip portion 31 corresponding to the notch recess 36 in the vicinity of the end portion 36a.

As shown in FIG. 7, the cap C has a top wall 40 provided on the top plate portion and an outer peripheral wall 41 suspended from the outer peripheral edge of the top wall 40. A sealing ring 43 connected by a plurality of weakening connecting portions 42 that can be broken is provided.
On the inner surface of the top wall 40, a cutting cylinder portion 46 and a screw cylinder portion 47 are vertically suspended integrally with the top wall 40 in order from the engaging portion 45 that is suspended near the center to the outside.

The engaging portion 45 is formed with an annular second engaging protrusion 50 on the outer periphery of the tip end that fits over the inner peripheral surface of the cylindrical wall 17 over the first engaging protrusion 19 of the inner plug B. ing.
On the inner periphery of the cutting cylinder portion 46, there are provided the engagement arms 52 constituting the second tooth portion that engages with the engagement projection 18 constituting the first tooth portion at the same number of six circumferential directions as the engagement projection 18. In addition, a seal portion 53 is formed on the outer periphery of the distal end of the cutting cylinder portion 46 so as to contact the inner peripheral surface of the extraction cylinder 10 and seal the outlet.
The length of the cutting cylinder part 46 extends to a position where the seal part 53 comes into contact with the base part 11 of the dispensing cylinder 10 and the tip part is fitted with the outer peripheral surface of the enlarged diameter part 22 of the plug body 16 with a slight gap. .

As shown in FIGS. 7 and 8B, the engaging arm 52 engages with the first engaging surface 20 of the engaging protrusion 18 when the cap C is rotated in the screw releasing direction when the cap is opened. A distal end engaging portion 54 having a second engaging surface 55 in a substantially radial direction and an arm portion 56 that is thinner than the distal end engaging portion 54 that extends from the inner peripheral surface of the cutting cylinder portion 46 in an inclined manner in the screwing direction. Yes.
As shown in FIG. 8C, the radial height h2 of the second engagement surface 55 is set to be equal to or higher than the radial height h1 of the first engagement surface 20 (h2 ≧ h1). .

The arm portion 56 extends in a direction in which the inclination angle α from the tangential direction of the inner peripheral surface of the cutting cylinder portion 46 is about 45 °, and in a free state, the cap C rotates and the engagement protrusion 18 is inclined. When contacting the engagement surface 21, the inclination is almost the same as the surface contact is possible.
The inclination angle α is set to an angle suitable for transmitting the rotational force of the cap C to the plug body 16 via the engagement arm 52 and is about 45 ° in this embodiment, but the inclination angle α is about the plug body 16 and the cutting cylinder. It is appropriately determined depending on the size (curvature) of the diameter of the portion 46, and a range of about 30 to 70 ° is preferable.
Further, as shown in FIG. 8B, the engaging arm 52 has a strength that can transmit a rotational force capable of breaking the thinned weakened portion 15, and as shown in FIG. The cap C is made of a member that has enough flexibility to be able to get over the engaging protrusion 18 when the cap C is tightened.

The threaded cylindrical portion 47 constituting the threaded portion is provided with a female screw 58 that is screwed into the male screw 24 of the inner plug A on the inner periphery, and has a wedge-shaped concave portion 59 that engages with the stopper 28 on the lower end surface in three circumferential directions. Is formed.
The wedge-shaped recess 59 is formed with a second contact surface 59a substantially perpendicular to the screwing direction, and a second inclined surface 59b is formed in the screwing direction, and the first contact surface 28a of the stopper 28, respectively. It has a shape corresponding to the first inclined surface 28b.
In this embodiment, the stopper 28 and the wedge-shaped recess 59 are provided at three places in the circumferential direction, but the present invention is not limited to this and can be provided at appropriate plural places.

When the lower end surface of the screw cylinder portion 47 contacts the upper wall 7 and the second contact surface 59a contacts the first contact surface 28a, the tightening of the cap C is completed.
At this time, the cutting cylinder portion 46 is in contact with the dispensing cylinder 10 at the seal portion 53, and the tip portion is fitted with a small gap with the enlarged diameter portion 22 of the plug body 16. The height of the threaded cylinder portion 47 is set so that the first and second protrusions 19 are fitted over the first engaging protrusion 19.

A knurl 60 is formed on the outer peripheral surface of the outer peripheral wall 41, and a sealing ring 43 is connected to the lower end of the outer peripheral wall 41 by a plurality of breakable weakening connecting portions 42, and the weakening connecting portions 42 are provided at four locations in the circumferential direction. Is provided.
In addition, on the upper surface of the sealing ring 43, upper protrusions 61 are provided at four locations in the circumferential direction so as not to overlap the weakened connecting portion 42 leaving a slight gap with the lower end of the outer peripheral wall 41.
The number and arrangement position of these weakening connection parts 42 and upper protrusions 61 are not limited to this, and can be set as appropriate.
On the inner peripheral surface of the sealing ring 43, a reduced diameter step portion 62 that engages with the notch step portion 29 provided on the outer peripheral surface of the outer cylinder 5 of the inner plug A is formed.
Next, usage modes and operational effects of this embodiment will be described.

First, in order to attach the stopper cap of the present embodiment to the container main body A, the cap C is screwed into the inner stopper B and tightened. After the inner stopper B and the cap C are assembled, the inner stopper B is inserted into the mouth 1. The fitting cylinder part 4 is applied and it plugs from the upper part.
When the female screw 58 of the cap C is screwed into the male screw 24 of the inner plug B and tightened, as shown in FIG. 8A, the cap C rotates in the direction of arrow R, and the engaging arm 52 is not engaged. It rides on the mating surface 21, gets over the engaging protrusion 18 and allows the cap C to rotate.
Further, since the fitting cylinder portion 4 is not fitted into the mouth portion 1 before the stopper cap is plugged into the container A, the outer cylinder 5 can be slightly deformed, and the reduced diameter step portion of the cap C 62 can descend over the height of the notch 29 of the outer cylinder 5.
The cap C can be fastened to the inner plug B by fixing the inner plug B using a jig (not shown).

When the cap C is lowered by screwing, the second engagement protrusion 50 of the engagement portion 45 comes into contact with the first engagement protrusion 19 of the cylindrical wall 17, and further descends, The second engaging protrusion 50 gets over the first engaging protrusion 19 and is fitted to the inner peripheral surface of the cylindrical wall 17.
At the same time, the lower part of the female screw 58 comes into contact with the vertical rib 25 and the upper part of the stopper 28 comes into contact with the lower end surface of the screw cylinder part 47.
When the female screw 58 rides on the vertical rib 25, the friction causes a brake on the rotation of the cap C and the screw cylinder portion 47 slowly descends while being slightly slowed, and the wedge-shaped recess 59 descends while being fitted to the stopper 28. To go.
Further, the lower end surface of the screw cylinder portion 47 abuts on the upper wall 7 and the fastening of the male screw 24 and the female screw 58 proceeds, and the second abutting surface 59a of the wedge-shaped recess 59 is the first abutting surface of the stopper 28. The abutting on 28a completes the fastening of both screws.

When the second contact surface 59a contacts the first contact surface 28a and the wedge-shaped recess 59 is completely fitted to the stopper 28, that is, when the fastening of the male screw 24 and the female screw 58 is completed, the ratchet mechanism The set state shown in FIG. 2B, that is, the arm portion 56 opposite to the second engagement surface 55 of the engagement arm 52 is in contact with or just before contact with the non-engagement surface 21 of the engagement protrusion 18. It is set to be set to state.
Further, the lower portion of the female screw 58 rides on the vertical rib 25 and a frictional force acts between the vertical rib 25 to prevent the cap and the inner plug from loosening.
By being set in this way, the cap C is not easily rotated from the set state (fastened state), and can be prevented from being inadvertently opened by a slight impact. The screw can be started smoothly so that the load during the initial movement of rotating the cap C does not increase rapidly.
In the set state, as shown in FIG. 2A, the seal portion 53 abuts against the inner peripheral surface of the dispensing tube 10 and seals, and the reduced diameter step portion 62 of the sealing ring 43 is formed on the outer tube 5. It has descended below the notch step 29.

When the stopper cap of the present embodiment assembled in the set state is plugged into the container main body A, the mouth portion 1 is fitted into the fitting cylinder portion 4 and the outer cylinder 5 is slightly expanded outwardly. The notch step portion 29 on the outer peripheral surface is enlarged in diameter, and can be engaged with the reduced diameter step portion 62 of the sealing ring 43.
Therefore, unless the sealing ring 43 is removed, it cannot be opened, and the opening state can be easily confirmed visually, so that the opening due to mischief or the like can be prevented.

Next, in order to use a container in which the stopper cap of the present embodiment is stoppered, the cap C is rotated in the screwing direction [direction of arrow L in FIG. 8B].
As described above, when the rotation of the cap C is started, the second engagement surface 55 of the engagement arm 52 is separated from the first engagement surface 20 of the engagement protrusion 18, so that the rotation starts smoothly. As shown in b), when the second engagement surface 55 of the engagement arm 52 comes into contact with and engages with the first engagement surface 20 of the engagement protrusion 18, the rotational force of the cap C causes the ratchet mechanism to move. Via the plug 16.

At this time, since the second engaging protrusion 50 of the engaging portion 45 is tightly fitted to the inner peripheral surface over the first engaging protrusion of the cylindrical wall 17, the cylindrical wall 17 is moved from the inside. Reinforcing makes it easy for the rotational force of the cap C to be transmitted to the plug body 16 via the ratchet mechanism, and generates a force to pull the plug body 16 upward as the screw rotates.
As the rotation of the cap C proceeds, the thinned weakened portion 15 is finally broken by the rotational force and the pulling force applied to the plug body 16, the spout is opened, and the plug body 16 separated from the extraction cylinder 10 is a cylinder. It is pulled up by the engaging portion 45 that engages with the wall 17 and rises together with the cap C.

At the same time, the reduced diameter step portion 62 of the sealing ring 43 engages with the notch step portion 29 and is prevented from further rising, the weakening connection portion 42 is broken, and the sealing ring 43 is separated from the cap C, and visually You can see that it was opened.
If the sealing part 53 of the cutting cylinder part 46 is separated from the inner peripheral surface of the dispensing cylinder 10 and the female screw 58 is unscrewed from the male screw 24 and the cap C is detached from the inner plug B, the plug body 16 is removed together with the cap C. The contents in the container can be poured out from the opening of the dispensing cylinder 10.

After the container is used, when the cap C is attached to the inner plug B again, the contents attached to the inner peripheral surface of the dispensing cylinder 10 due to the flange portion 23 of the plug body 16 and the broken pieces of the thinned weakened portion 15 Things are scraped off, and the inner peripheral surface of the dispensing tube 10 can be kept clean.
In addition, the cutting cylinder portion 46 seals the inside of the container with the seal portion 53 coming into contact with the dispensing cylinder 10, and the distal end portion is fitted with a small gap with the enlarged-diameter portion 22 of the plug body 16. It is difficult for the contents to enter the inside of the cutting cylinder portion 46 from the gap.
Therefore, the inside of the stopper cap can be kept clean, and the contents can be prevented from dripping when the cap C is removed and the surroundings being soiled.

The stopper cap of the present embodiment can be separated from the container main body A by a simple operation, separated and discarded when the container is discarded after being used.
First, when a finger is put on the hook recess 32a of the longitudinal cutting portion 32 and the gripping portion 31 is pulled to the front, the longitudinal cutting portion 32 is broken and the gripping portion 31 is unfolded outward as shown in FIG. To do.
When the grip portion 31 is further pulled while gripping the grip concave portion 33 with a finger, the thin-walled start portion 35 provided adjacent to the end portion 30 b of the slit 30 is broken, and further continues to the end of the thin-wall start portion 35. The fracture proceeds to the circumferential cut portion 37 via the thin radial cut portion 38 [see FIG. 9B].

When the circumferential cut portion 37 is broken, the engagement of the engagement reduced diameter portion 27 with the engagement protrusion 2 is released. Therefore, when the breakage proceeds to the vicinity of the break end portion 37a, the engagement reduced diameter portion 27 is released. When the restraint on the mouth portion 1 is released and the grip portion 31 is pulled up, the inner stopper B can be detached from the container body A and separated and discarded.
As described above, the stopper cap of the present embodiment can be easily opened simply by rotating the cap in the screw releasing direction without using a pull ring, and can prevent inadvertent opening and mischief. At the same time, there is a remarkable effect that it can be easily disposed of.

Next, a description will be given of a second embodiment in which the stopper body and the engaging portion are made smaller to downsize the ratchet mechanism and the opening is further facilitated.
Hereinafter, the same components as those in the first embodiment will be denoted by the same reference numerals, and only different components will be denoted by different reference numerals, and the differences will be mainly described.

As shown in FIG. 10, in the stopper cap of the present embodiment, the opening of the dispensing tube 10 when opened is smaller than the outer diameter of the cap C, and the plug 116 is the first embodiment. It is formed smaller.
The inner diameter of the first engaging projection 119 provided on the inner periphery of the cylindrical wall 117 of the plug body 116 is also small, and the engaging portion 145 has a cylindrical shape in which only the distal end portion swells outward, and the second engaging portion. A mating protrusion 150 is formed.
A thinned weakened portion 115 is formed along the lower end portion of the outer peripheral surface of the cylindrical wall 117, and the plug body 116 does not have the enlarged diameter portion 22 or the flange portion 23 like the plug body 16 in the first embodiment.

On the outer periphery of the cylindrical wall 117, as in the first embodiment, engaging projections 118 project in six locations in the circumferential direction, and on the inner periphery of the cut tube portion 46, the same number of circumferential projections 6 as the engaging projections 118. Engaging arms 52 project from the portions to form a ratchet mechanism that engages only when the cap C is screwed off.
The engagement protrusion 118 has a first engagement surface 120 formed in a substantially radial direction, and a non-engagement surface 121 formed so as to be inclined on the opposite side in the circumferential direction. 117 is the same as the first embodiment in that it has a substantially trapezoidal shape with the outer peripheral surface side as the base, but the diameter of the outer peripheral surface of the cylindrical wall 117 and the inner peripheral surface of the cut cylindrical portion 46 is small. The inclination of the engagement surface 121 and the engagement arm 52 rises from the case of the first embodiment, and the inclination angle α of the arm portion 56 from the tangential direction of the inner peripheral surface of the cutting cylinder portion 46 extends in the direction of about 60 °. ing.

  In the stopper cap of the present embodiment, the outer diameter of the plug body 116, that is, the diameter of the thinned weakened portion 115 is smaller than that of the first embodiment compared to the outer peripheral diameter of the cap C, so that the thinned weakened portion 115 is broken and opened. Therefore, the force for gripping the knurl 60 provided on the outer periphery of the cap C and rotating the cap C can be made smaller than that in the first embodiment, and the opening operation is easy, so that even a child or an elderly person can easily perform the operation. Can be opened.

  The stopper cap of the present invention can be easily opened by simply rotating the cap in the screw release direction without using a pull ring, and can prevent inadvertent opening due to impact or the like. It can be widely used in containers for seasonings and seasonings, and is particularly suitable as a container that can be used with peace of mind by children and the elderly.

A Container body B Inner plug C Cap 1 Mouth part 2 Locking protrusion 4 Fitting cylinder part 5 Outer cylinder 6 Inner cylinder 7 Upper wall 8 Screw wall part 9 Step part 10 Extraction cylinder 11 Base part 12 Lip part 14 Bottom wall 15 Thinning weakened portion 16, 116 Plug body 17, 117 Cylindrical wall 18, 118 Engaging projection (first tooth portion)
19,119 1st engagement protrusion 20,120 1st engagement surface 21,121 Non-engagement surface 22 Diameter expansion part 23 Flange part 24 Male thread 25 Vertical rib 26 Reinforcement rib 27 Locking diameter reduction part 28 Stopper 28a 1st Contact surface 28b First inclined surface 29 Notch step portion 30 Slit 30a Start end portion 30b End portion 31 Grip portion 32 Vertical cut portion 32a Hook recess portion 33 Grip recess 35 Thin wall start portion 36 Notch recess portion 36a End portion 37 Circumferential cutting Part 38 radial direction cutting part 40 top wall (top plate part)
41 outer peripheral wall 42 weakening connection part 43 sealing ring 45,145 engagement part 46 cutting cylinder part 47 screw cylinder part (screw part)
50, 150 Second engagement protrusion 52 Engagement arm (second tooth portion)
53 Seal portion 54 Tip engagement portion 55 Second engagement surface 56 Arm portion 58 Female screw 59 Wedge-shaped recess 59a Second contact surface 59b Second inclined surface 60 Knurl 61 Upper projection 62 Reduced diameter step portion

Claims (7)

An inner plug having an outlet tube that is attached to the mouth portion of the container main body and forms an outlet and guides the contents, and a cap that is screwed into the inner stopper and is detachably attached.
The inner plug is connected to the inner peripheral surface of the dispensing cylinder via a thinned weakened portion, and is provided with a cylindrical wall provided with a first engagement protrusion on the inner periphery and a first tooth on the outer periphery. The body,
The cap hangs from the top plate portion and has an engagement portion formed with a second engagement projection that can be engaged with the first engagement projection on the outer periphery, and an outer periphery disposed on the outer periphery of the engagement portion. A cutting cylinder part provided with a second tooth part, and a screw part disposed on the outside of the cutting cylinder part;
The first tooth portion includes engaging protrusions provided at a plurality of locations in the circumferential direction. The engaging protrusion includes a first engaging surface formed in a substantially radial direction from the outer peripheral surface of the cylindrical wall, and an outer peripheral surface of the cylindrical wall. A substantially trapezoidal shape or a substantially right triangle shape in a plan view having a non-engaging surface inclined in a screwing direction from
The second tooth portion includes engagement arms provided at a plurality of locations in the circumferential direction, and the engagement arms are provided at the distal end of the arm portion and an arm portion extending in an inclined manner from the inner peripheral surface of the cutting cylinder portion in the screwing direction. A tip engagement portion having a second engagement surface formed in a substantially radial direction,
The first cap and the second cap constitute a ratchet mechanism in which the first engagement surface and the second engagement surface abut and engage only when the cap is screwed off.   The stopper cap according to claim 1, wherein the radial height of the second engagement surface is equal to or higher than the radial height of the first engagement surface.   The non-engagement surface of the engagement protrusion and the arm portion of the engagement arm in the free state are inclined so as to be substantially in contact with each other when the cap rotates and the arm portion and the non-engagement surface come into contact with each other. None, The inclination cap made to the tangential direction of the cutting cylinder part inner peripheral surface of an engagement arm is the range of about 30-70 degrees, The stopper cap of Claim 1 or 2 characterized by the above-mentioned. The lower end of the inner plug is provided with an upper wall that forms an annular groove that fits into the mouth of the container main body, and a fitting cylinder portion that includes an inner cylinder and an outer cylinder that are suspended from the upper wall,
On the upper surface of the upper wall, stoppers are provided at a plurality of locations in the circumferential direction, and each stopper is formed with a first contact surface substantially perpendicular to the screwing direction and a first inclined surface in the screwing direction.
The lower end of the screw cylinder of the cap is provided with a wedge-shaped recess having a second contact surface and a second inclined surface corresponding to the stopper,
The stopper and the wedge-shaped concave part are engaged with the arm part of the engaging arm when the first and second contact surfaces come into contact with each other when the cap is screwed into the inner stopper. The stopper cap according to any one of claims 1 to 3, wherein the cap is set to be in contact with or just before contact with the non-engagement surface of the protrusion.   On the outer periphery of the screw wall portion that is connected to the inner peripheral side of the upper wall of the inner plug and has a screw formed, a vertical rib slightly raised in the axial direction is provided below the screw in the vicinity of the first inclined surface side of each stopper The stopper cap according to claim 4, wherein the stopper cap is provided. The lower end of the outer peripheral wall forming the outer peripheral surface of the cap is provided with a sealing ring connected by a plurality of weakening connecting parts that can be broken,
The inner peripheral surface of the sealing ring is provided with a reduced-diameter step portion that can be engaged with a notch step portion that is continuous with a concave surface that is notched to the outer peripheral surface of the outer tube of the inner plug. The stopper cap according to claim 4 or 5. The lower end of the outer cylinder of the inner plug is provided with a separation mechanism that can be separated and discarded from the container body.
The separation mechanism includes a gripping portion formed through a slit formed in the axial direction over a predetermined arc range on the lower outer peripheral surface of the outer cylinder, and a longitudinal cutting portion formed in one end portion of the gripping portion so as to be fractured in the axial direction. And the thin end portion of the thin wall portion adjacent to the slit end on the other end side of the grip portion, the lower portion being cut out except for the grip portion and formed to be fragile, and the thin start portion A notch recess that is notched in the radial direction from the outer peripheral surface of the outer cylinder to match the height of the upper surface of the thin-walled start portion over a predetermined arc range from the end opposite to the slit end, and a notch recess A thin-walled circumferential cut portion formed to be ruptured on the inner peripheral side of the outer cylinder, and a breakable thin-wall radial cut portion that connects the end portion of the thin-walled start portion and the circumferential cut portion. The stopper cap according to any one of claims 4 to 6, wherein:

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