JP6652849B2 - Container with inner stopper - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container with an inner stopper that separates a part of the inner stopper when opening and holds the inner stopper on the upper lid side.

  The container with an inner cap includes, for example, an inner plug that has a separating portion and locks the base to the container body, and an upper lid that is screwed to the inner plug base so as to cover the inner plug, A type in which the separation part of the inner plug is engaged with the upper lid side, and when the upper lid is detached from the container body etc., the separation part of the inner plug is separated from the inner plug base, and the separation part is held on the upper lid side and opened. (For example, see Patent Document 1).

In the container of Patent Literature 1, the separation part and the upper lid of the inner plug are connected so as to be rotatable and axially interlocked with each other via annular protrusions respectively formed on the cylindrical parts provided on both sides. A ratchet mechanism is provided between the tubular portion of the separating portion and the tubular portion of the upper lid, the ratchet mechanism meshing with the rotation in the anti-screw direction.
In the above container, when the upper lid is rotated in the anti-screw direction to separate the upper lid from the container body, the separating portion of the inner plug is rotated together with the upper lid via a ratchet mechanism between the two tubular portions, and sheared from the base. At the same time as the separation, the separation part connected to this by the upper lid is pulled up, and the separation part is held by the upper lid.

  By the way, in the technique of Patent Literature 1, it is necessary to form a protrusion that secures interlocking in the axial direction on both sides in order to hold the separating portion on the upper lid. Since this projection is undercut when the inner plug and upper lid are molded, if the height of the projection (radial height) is high, a large force acts on the separation part of the inner plug when removing the mold. However, there is a possibility that the separation portion of the inner plug is sheared from the base portion and the product becomes defective.

JP 2015-163525 A

  The present invention has been made in view of the background art described above, and has as its object to provide a container with an inner plug that does not have the possibility of shearing the separating portion of the inner plug from the base of the inner plug during molding.

  MEANS TO SOLVE THE PROBLEM In order to solve the said subject, the container with an inner plug which concerns on this invention covers the inner plug which has the base part latched by the container main body, and the isolation | separation part connected to the said base via the shear part, and the inner plug. In this way, the upper lid is screwed to the base or the container body of the inner plug via the screwing part, and is provided as a part of the upper lid and the separating part, which can be engaged with the separating part. A ratchet mechanism for transmitting a force for separating the separating portion from the base by shearing by rotating the separating portion together with the upper lid when the separating portion is rotated in the anti-screw direction, wherein the first ratchet on the upper lid side of the ratchet mechanism The lower end of the first contact portion of the claw is inclined in the anti-screw direction of the upper lid with respect to the plane including the rotation axis, and the upper end of the second contact portion of the second ratchet claw on the separation portion side is Is inclined in the screwing direction of the upper lid with respect to the plane including the. Here, the anti-screw direction of the upper cover means a rotational direction for loosening the upper cover (specifically, a counterclockwise direction when viewed from above), and the screwing direction of the upper cover is a rotational direction for tightening the upper cover (specifically, (Clockwise when viewed from above). The surface including the rotation axis is set for each position on the circumference around the rotation axis. It is desirable that the rotation axis of the upper lid and the inner plug is common.

  According to the container with the inner stopper, the ratchet mechanism separates not only the shearing from the base by rotating the separating portion together with the upper lid when the upper lid is rotated in the anti-screw direction, but also separates with the rotation of the upper lid. The separation portion can be prevented from relatively lowering, and the separation portion can be held on the upper lid by frictional resistance between the first and second contact portions of the first and second ratchet claws. In other words, it is not necessary to form a projection for holding the separating portion on the upper lid, and it is possible to prevent the separating portion of the inner plug from being sheared and separated from the base of the inner plug during molding.

  Further, according to a specific aspect of the present invention, in the container with an inner stopper, the upper lid has a first cylindrical body concentric with the rotation axis on the lower surface side of the upper lid, and the separation unit has the same shape as the rotation axis. The core has a second cylindrical body, and a ratchet mechanism is provided on opposing peripheral surfaces of the first and second cylindrical bodies. In this case, since the ratchet mechanism operates via the first cylindrical body provided on the upper lid and the second cylindrical body provided on the separating section, the holding of the separating section by the upper lid becomes reliable and stable.

  Further, in another aspect of the present invention, the tip of the first ratchet claw relatively close to the rotation axis in a plane perpendicular to the rotation axis is in a direction opposite to the surface including the rotation axis in the anti-threading direction of the upper lid. The tip of the second ratchet claw that is inclined and that is relatively far from the rotation axis in a plane perpendicular to the rotation axis is inclined by 0 ° or more in the screwing direction of the upper lid with respect to the plane including the rotation axis. . When the tip of the second ratchet pawl is at 0 ° with respect to the plane including the rotation axis, the state is not substantially inclined. With such an inclination, when the upper lid is rotated in the screwing direction with respect to the container body or the like, the first ratchet claw is easily deformed and only the upper lid is allowed to rotate. On the other hand, when rotating in the anti-screw direction, both ratchet claws are engaged to lock the upper lid and the separating portion integrally.

  In still another aspect of the present invention, the tip of the first ratchet claw in a plane perpendicular to the rotation axis has two corners, and at least one of the two corners serves as a first contact part. It contacts the second contact portion.

In still another aspect of the present invention, the upper lid has a third cylindrical body concentric with the rotation axis on the lower surface side of the upper lid, and the separation unit has a fourth cylindrical body concentric with the rotation axis. By bringing the opposing peripheral surfaces of the third and fourth cylindrical bodies into contact with each other, frictional resistance is imparted with respect to the relative rotation between the separating portion and the upper lid . In this case, the relative rotation of the separating portion held by the upper lid is effectively prevented, and as a result, the separating portion is prevented from rotating in the screwing direction and moving in the separating direction when viewed from the upper lid. Thus, the separation unit can be more reliably held by the upper lid.

  Further, in still another aspect of the present invention, the first ratchet pawl and the second ratchet pawl have first and second sliding surfaces that come into contact with each other when the upper lid is rotated in the screwing direction. The second sliding surface of the ratchet pawl has a curved surface. In this case, when the upper lid is rotated in the screwing direction, the first ratchet pawl easily rides on the second ratchet pawl.

It is a conceptual exploded perspective view showing one embodiment of a container with an inside stopper concerning the present invention. It is a conceptual sectional view showing the state where the inside stopper of the container with the inside stopper of this embodiment was locked to the container body, and the upper lid was screwed on the inside stopper base. FIGS. 7A and 7B are diagrams illustrating the tilt angle of the ratchet claw, in which FIG. 7A shows a front view, FIG. 7B shows a plan view, and FIGS. 7C to 7F show modified examples of FIG. Corresponding to the cross-sectional view taken along the line AA in FIG. 2 of the present embodiment, (a) shows a state in which the upper lid is screwed into the inner plug and tightening, and (b) shows a state in which the upper lid is further tightened. I have. Corresponding to the cross-sectional view taken along the line AA in FIG. 2 of the present embodiment, (a) shows the state after the tightening is completed, and (b) rotates the upper lid from the inner plug in the anti-screw direction to open the plug. This shows a state where the operation has been performed.

  1 and 2 show one embodiment of a container with an inner stopper according to the present invention. In the following embodiment, the positional relationship such as up and down will be described in a state where the axis of the container, that is, the rotation axis AX is set up vertically.

  The illustrated container 100 with a plug is provided with a plug 10 that is locked to the container body 1 and an upper lid 20 that is screwed to the plug 10 so as to cover the plug 10.

  The inner plug 10 is an integrally molded product made of resin by molding, and includes a base 11 fitted to the mouth 1 a of the container body 1 and a separating portion 12 to be opened.

  The base 11 of the inner plug 10 has a large-diameter cylindrical body 11a forming an extraction port for the contents of the container body 1. A lip 11b extending radially outward is formed at the upper end of the large-diameter cylindrical body 11a, and a male screw 11c is formed on the outer peripheral surface of the intermediate portion. At the lower portion of the base portion 11, a flange 11d extending radially outward, an inner cylindrical portion 11e extending downward on the inner peripheral side of the lower surface of the flange 11d, and an outer cylinder extending downward on the outer peripheral edge of the lower surface of the flange 11d. A cylindrical portion 11f is formed, thereby forming an annular concave portion 13 having a U-shaped cross section and opening downward.

  The separation part 12 of the inner plug 10 includes a disk-shaped sealing body 12a. The sealing body 12a is connected to the inner periphery of the lower end of the large-diameter cylindrical body 11a of the base 11 via an annular shearing portion 14 having a notch formed in the circumferential direction. A small-diameter cylindrical body 12b is provided upright on the periphery of the upper surface of the sealing body 12a. This small-diameter cylindrical body 12b functions as second and fourth cylindrical bodies. Then, six second ratchet claws 15a are formed at equal intervals in the circumferential direction on the outer peripheral surface 12k of the small-diameter cylindrical body 12b.

  The second ratchet claw 15a is thick and extends in a ridge shape along the outer peripheral surface 12k, and forms a ratchet mechanism 15 in cooperation with a first ratchet claw 15b on the upper lid 20 side described later. Although details will be described later, the upper end 15f of the second ratchet claw 15a is formed to be slightly twisted in the screwing direction of the upper lid 20 around the rotation axis AX. Further, a tip 15d of the second ratchet claw 15a in a plane perpendicular to the rotation axis AX, which is relatively far from the base end 15p on the root side with respect to the rotation axis AX, is positioned with respect to a vertical plane RS including the rotation axis AX. The upper lid 20 is formed to be inclined in the screwing direction (see FIG. 3B). Here, the distal end 15d of the second ratchet claw 15a is the outermost end portion of the second ratchet claw 15a on the radial outside of the inner plug 10 with respect to the base end 15p. The radial direction is a direction radially centered on the rotation axis AX. The vertical plane RS including the rotation axis AX is set at each position on the circumference around the rotation axis AX with respect to the rotation axis AX. It is desirable that the rotation axis AX of the upper lid 20 and the inner plug 10 be common.

  The upper lid 20 is an integrally molded resin product formed by molding, and has an outer shape formed by a ceiling wall 20a and a cylindrical peripheral wall 20b that is curved and extends downward from the ceiling wall 20a. An outermost cylindrical body 21 is formed integrally with the lower surface of the ceiling wall 20a in the vicinity of the peripheral wall 20b. A female screw 21 a is formed on the inner peripheral surface of the outermost cylindrical body 21. On the lower surface side of the ceiling wall 20a, a large-diameter cylindrical body 22, a medium-diameter cylindrical body 23, and a small-diameter cylindrical body 24, which are concentric with the outermost cylindrical body 21, are integrally formed. Here, the medium-diameter cylinder 23 functions as a first cylinder, and the small-diameter cylinder 24 functions as a third cylinder.

  The female screw 21a provided on the outermost cylindrical body 21 of the upper lid 20 and the male screw 11c provided on the large-diameter cylindrical body 11a of the inner plug 10 constitute a screwing portion 51 for screwing the upper lid 20 to the inner plug 10. You. For the upper lid 20 or the outermost cylindrical body 21, the clockwise direction is the screwing direction when viewed from above, and the lower direction D2 is the screwing direction. For the inner plug 10 or the large-diameter cylindrical body 11a, the clockwise direction as viewed from below is the screwing direction, and the upper direction D1 is the screwing direction.

  On the inner peripheral surface 23k of the medium-diameter cylindrical body 23, a first ratchet claw 15b forming the other side of the ratchet mechanism 15 is formed. The first ratchet claw 15b is thin and elastic, and extends in an elongated plate shape along the inner peripheral surface 23k. Although details will be described later, the lower end 15g of the first ratchet claw 15b is formed to be slightly twisted around the rotation axis AX in the anti-screw direction of the upper lid 20 (see FIG. 3A). The tip 15e of the first ratchet claw 15b in a plane perpendicular to the rotation axis AX, which is relatively closer to the base end 15q on the root side with respect to the rotation axis AX, is positioned with respect to the vertical plane RS including the rotation axis AX. The upper cover 20 is formed to be inclined in the anti-screwing direction (see FIG. 3B). Here, the distal end 15e of the first ratchet claw 15b is the end of the first ratchet claw 15b radially inward of the upper lid 20 with respect to the base end 15q.

  Hereinafter, the shapes and postures of the second and first ratchet claws 15a and 15b will be described in detail with reference to FIGS. 3 (a) and 3 (b).

  The second contact portion AB1 of the second ratchet claw 15a is viewed from the front as shown in FIG. 3A (specifically, as viewed in a cross section taken along the line BB in FIG. 3B). The upper end 15f is inclined at an angle α1 in the screwing direction R2 on the upper lid 20 side with respect to the vertical plane RS including the rotation axis AX. As shown in FIG. 3B, the second ratchet claw 15a includes the rotation axis AX in a plan view (specifically, as viewed in a cross section taken along the line CC in FIG. 3A). It is formed to be inclined in the screwing direction R2 on the upper lid 20 side at an angle β1 on the tip 15d side with respect to the vertical plane RS. FIG. 3B is an example, and the tip 15d of the second ratchet claw 15a in a plane perpendicular to the rotation axis AX may not be inclined with respect to the vertical plane RS including the rotation axis AX. In this case, specifically, the tip 15d of the second ratchet claw 15a is at 0 ° to the vertical plane RS including the rotation axis AX.

  On the other hand, as shown in FIG. 3A, the first abutment portion AB2 of the first ratchet claw 15b has an upper cover 15a at an angle α2 at a lower end 15g side with respect to a vertical plane RS including the rotation axis AX in a front view. It is formed to be inclined in the anti-screw direction on the 20 side (screw direction R1 on the separation section 12 side). Further, as shown in FIG. 3B, the first ratchet claw 15b has an angle β2 at the tip 15e side with respect to the vertical plane RS including the rotation axis AX at an angle β2 with respect to the vertical plane RS including the rotation axis AX, as shown in FIG. It is formed to be inclined in the screwing direction R1) on the separation part 12 side. The tip 15e of the first ratchet claw 15b has two corners E1 and E2 in plan view. At least one of the two corners E1 and E2 first comes into contact with the second contact portion AB1 of the second ratchet claw 15a as the first contact portion AB2 when the upper lid 20 is rotated in the anti-screw direction. Touch As shown in FIGS. 3B to 3E, the tip end 15e of the first ratchet claw 15b may have an end surface inclined with respect to a vertical plane RS including the rotation axis AX, or may be inclined as shown in FIG. As shown in ()), it does not have to be inclined.

  In the above description, the first and second contact portions AB2 and AB1 are portions where one contact portion contacts the other contact portion. The first contact portion AB2 may come into contact with the second contact portion AB1 at a corner (or a corner and its periphery) or may come into contact along the end surface.

Hereinafter, a method of assembling and using the container 100 with an inner stopper shown in FIG. 2 and the like will be described. After the contents are stored in the container main body 1 in advance, the annular concave portion 13 of the inner plug 10 is fitted to the mouth 1a of the container main body 1 and locked to the container main body 1. In this state, the inner stopper 10 completely seals the mouth 1 a of the container 1.
Thereafter, the upper lid 20 is attached to the inner plug 10. Specifically, by screwing the female screw 21a of the upper lid 20 with the male screw 11c of the inner plug 10, the upper lid 20 gradually moves in the screwing direction D2 while rotating in the screwing direction R2 with respect to the inner plug 10. Then, the upper lid 20 is in a state of covering the inner plug 10 and the mouth 1a, and the assembly of the two is completed. At this time, the first ratchet pawl 15b of the upper lid 20 located in the state shown in FIG. 4A is located between the second ratchet pawls 15a of the inner plug 10, and is located in the state shown in FIG. The second ratchet claw 15a on the stopper 10 abuts on the first ratchet claw 15b on the upper lid 20 via the second and first sliding surfaces SL1 and SL2, and in this case, the first ratchet claw on the upper lid 20 side. 15b is bent and passes through the second ratchet claw 15a on the inner plug 10 side. Then, as shown in FIG. 5A, the first ratchet claw 15b on the upper lid 20 side is located on the front side in the screwing direction R2 with respect to the second ratchet claw 15a on the inner plug 10, and stops there. The second sliding surface SL1 of the second ratchet claw 15a on the inner plug 10 side has a curved surface, and the first ratchet claw 15b on the upper lid 20 side can easily ride on the second ratchet claw 15a on the inner plug 10 side. I have.

  The state shown in FIG. 5A corresponds to the state shown in FIG. 2. In the state shown in FIG. 5A, the outside of the large-diameter cylindrical body 22 of the upper lid 20 is in close contact with the inside of the lip 11b of the inner plug 10. Then, the outer peripheral surface 24j of the small-diameter cylindrical body 24 of the upper lid 20 comes into contact with the inner peripheral surface 12j of the small-diameter cylindrical body 12b of the separation portion 12 of the inner plug 10. The container 100 with an inner stopper flows in such a state.

  When using the container 100 with an inner stopper, the stopper is first opened using the upper lid 20. The opening is performed by rotating (rotating in the anti-screw direction) so that the upper lid 20 is loosened with respect to the container body 1.

  When the upper lid 20 is rotated in the loosening direction, the first ratchet pawl 15b of the upper lid 20 engages with the second ratchet pawl 15a of the inner plug 10, as shown in FIG. The first ratchet claw 15b is engaged so as to bite the second ratchet claw 15a, and the first and second contact portions AB2 and AB1 are in close contact with each other. As a result, the separation part 12 of the inner plug 10 is rotated integrally with the upper lid 20 via the first and second ratchet claws 15b and 15a, and the separation part 12 is pulled up. Therefore, the separation part 12 is sheared from the base part 11 at the shear part 14.

  Upon opening, a cracking sound is generated due to the breakage of the shearing portion 14, and the torque required for rotation of the upper lid 20 is sharply reduced, so that a clear opening feeling can be generated.

  Thereafter, the separation portion 12 of the inner plug 10 is separated from the base 11 of the inner plug 10, that is, the container main body 1 while being locked by the upper lid 20, and the mouth 1 a of the container main body 1 is connected to the base 11 of the inner plug 10. Is completely opened through the large-diameter cylindrical body 11a. That is, the separation unit 12 is removed from the container body 1 together with the upper lid 20. Thereby, the contents in the container body 1 can be poured.

  The separated portion 12 after opening is held by the first ratchet pawl 15b of the upper lid 20 via the second ratchet pawl 15a, and the inner peripheral surface 12j of the small diameter cylindrical body 12b of the inner plug 10 and the small diameter of the upper lid 20 are assisted. The rotation is suppressed by the frictional resistance between the outer peripheral surface 24j of the cylindrical body 24 and the cylindrical body 24.

  When re-attaching the upper lid 20 after the first opening, the upper lid 20 is screwed to the base 11 of the inner plug 10. As a result, the peripheral surface of the sealing body 12a of the separation portion 12 held by the upper lid 20 abuts on the remaining shearing portion of the base 11, thereby sealing the contents in the container body 1. Further, the outside of the large-diameter cylindrical body 22 of the upper lid 20 is in close contact with the inside of the lip 11b of the inner plug 10, so that the contents in the container body 1 are sealed.

  In the container 100 with the inner stopper described in the embodiment described above, when the upper lid 20 is rotated in the anti-screw direction by the ratchet mechanism 15, the separation unit 12 is rotated together with the upper lid 20 to separate the upper lid 20 by shearing. Instead, it is possible to prevent the separation portion 12 from relatively lowering with the rotation of the upper lid 20, and to reduce the frictional resistance between the second and first contact portions AB1 and AB2 of the second and first ratchet claws 15a and 15b. Thereby, the separation part 12 can be held by the upper lid 20. In other words, there is no need to form a projection for holding the separating portion 12 on the upper lid 20, and it is possible to prevent the separating portion 12 of the inner plug 10 from being sheared and separated from the base 11 of the inner plug 10 during molding. Can be.

  The angles α1 and α2 of the second and first ratchet claws 15a and 15b with respect to the rotation axis AX direction are preferably as large as possible in order to hold the separation unit 12 on the upper lid 20, but the removal of the mold may be complicated. Considering them, it is preferable to set the range of 10 degrees to 60 degrees. The angles β1, β2 and the thickness of the second and first ratchet claws 15a, 15b with respect to the direction perpendicular to the rotation axis AX are the bending states of the second and first ratchet claws 15a, 15b, that is, the inner plug 10 and the upper lid. The material is appropriately determined depending on the material of the upper cover 20 (generally, the upper cover 20 is harder than the inner plug 10).

  Although the present invention has been described with reference to the embodiment, the present invention is not limited to the above embodiment. For example, the material of the container body 1 to which the above-described embodiment is applied may be a synthetic resin, glass, or metal, and the inner plug 10 is provided at the mouth of a bag-like member made of a film. be able to.

  In the above embodiment, the upper lid 20 is screwed to the outer periphery of the base 11 of the inner plug 10, but the upper lid 20 may be screwed to the container body 1.

  In the above-described embodiment, the two corners E1 and E2 are provided at the tip 15e of the first ratchet claw 15b. However, the corners may not be provided and may have, for example, a round shape.

DESCRIPTION OF SYMBOLS 1 ... Container main body, 1a ... Mouth part, 10 ... Inner plug, 10a ... Extraction port, 11 ... Base part, 11a ... Large diameter cylinder, 11b ... Lip, 11c ... Male thread, 11d ... Flange, 11e ... Inner cylinder part, 11f ... outer cylinder part, 12 ... separation part, 12a ... sealing body, 12b ... small diameter cylindrical body, 13 ... annular concave part, 14 ... shearing part, 15 ... ratchet mechanism, 15a, 15b ... ratchet claw, 20 ... top lid, 20a ... Ceiling wall, 20b: peripheral wall, 21: cylindrical body, 21a: female screw, 22: large-diameter cylindrical body, 23: medium-diameter cylindrical body, 24: small-diameter cylindrical body, 51: screwed portion, 100: container 100 with internal stopper, AX: Rotating axis

Claims (6)

A base portion locked to the container body, and an inner plug having a separation portion connected to the base portion via a shearing portion,
An upper lid that is screwed to the base or the container body of the inner plug via a screwing portion so as to cover the inner plug, and is engageable with the separating portion.
The separation unit is provided as a part of the upper lid and the separation unit, and when the upper lid is rotated in the anti-screw direction for opening, by rotating the separation unit together with the upper lid, the separation unit is moved. A ratchet mechanism that transmits a force that separates from the base by shearing,
The lower end of the first abutting portion of the first ratchet pawl on the upper lid side of the ratchet mechanism is inclined in a counter-screw direction of the upper lid with respect to a plane including a rotation axis, and An upper end of the second abutting portion of the ratchet pawl is inclined in a screwing direction of the upper lid with respect to a plane including a rotation axis, the container having an inner stopper.   The upper lid has a first cylindrical body concentric with the rotation axis on the lower surface side of the upper lid, and the separation unit has a second cylindrical body concentric with the rotation axis, The container with an inner plug according to claim 1, wherein the ratchet mechanism is provided on opposing peripheral surfaces of the second cylindrical body. A tip of the first ratchet claw relatively close to the rotation axis in a plane perpendicular to the rotation axis is inclined in the anti-screw direction of the upper lid with respect to a plane including the rotation axis,
A tip of the second ratchet claw relatively far from the rotation axis in a plane perpendicular to the rotation axis is inclined at 0 ° or more in the screwing direction of the upper lid with respect to a plane including the rotation axis. The container with an inner plug according to any one of claims 1 and 2, wherein: The tip of the first ratchet claw in a plane perpendicular to the rotation axis has two corners,
The container with a plug according to claim 3, wherein at least one of the two corners contacts the second contact portion as the first contact portion. The upper lid has a third cylindrical body concentric with the rotation axis on the lower surface side of the upper lid, and the separation unit has a fourth cylindrical body concentric with the rotation axis. The frictional resistance is given with respect to the relative rotation of the said separation part and the said upper lid by contacting the opposing peripheral surface of a 4th cylindrical body mutually, The one of Claims 1-4 characterized by the above-mentioned. The container with an inner stopper according to item 1. The first ratchet pawl and the second ratchet pawl have first and second sliding surfaces that come into contact with each other when the upper lid is rotated in the screwing direction, respectively.
The container with an inner plug according to any one of claims 1 to 5 , wherein the second sliding surface of the second ratchet pawl has a curved surface.

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