JP6073100B2 - Cap for container - Google Patents

Description

  The present invention relates to a container cap provided at the mouth of a bottle-shaped container.

As a known cap used for a container with a lid, it has an inner stopper and an upper lid. In the inner stopper, a main body side cylindrical portion that is fitted into the opening of the bottle, and a leading end thereof are connected via a score. There are those provided with a separating portion (see FIG. 10 of Patent Document 1).
In this cap, the upper lid is screwed into the opening of the bottle to separate the separating portion from the main body side cylindrical portion, and the separated separating portion is held by an annular protrusion extending downward from the upper end inner wall of the upper lid. Yes.

  This cap can be easily opened just by screwing the upper lid into the container mouth, and the separation part separated by opening can be held on the upper inner wall side of the upper lid to function as a seal after opening. Since it is possible, it is extremely easy to use, that is, easy to use.

  By the way, in the container with a lid provided with the cap described in Patent Document 1, the separation portion of the inner plug is held by the annular protrusion extending downward from the upper end inner wall of the upper lid. It is desirable that the inner peripheral surface of the protruding portion and the outer peripheral surface of the separating portion be in close contact or close to each other.

  If such a container with a lid is accidentally dropped when it is moved, for example, when an impact is applied to the corner of the upper lid, the impact is transmitted to the inner plug via the protruding portion of the upper lid, thereby There is a risk that the score connecting the main body side cylindrical portion and the separating portion of the inner plug may be damaged by separation or the like. If such unintentional opening occurs in the distribution stage, it is handled as a defective product, so it is desirable to prevent such unintentional opening as much as possible.

International Publication No. WO2007 / 126062

  Accordingly, an object of the present invention is to provide a cap for a container that can effectively prevent separation of the inner plug separating portion and the main body portion even when an impact is applied to the upper lid.

In order to solve the above problems, a cap for a container according to the present invention includes (a) a sealed space that encloses contents together with a container body, and a separation portion for forming an opening in the sealed space. The cap includes an inner plug, and (b) an upper lid that allows the separation portion to be separated from the inner plug to form an opening and has holding means for holding the separation portion when the separation portion is separated. (C) The inner plug has a main body portion that is connected to the separation portion at the opening and is locked to the container main body, and (d) the holding means extends downward from the lower surface of the upper end wall of the upper lid. Abutting on the peripheral edge of the flange formed on the upper part of the separation part before separation associated with opening, it can be locally deformed radially outward at a plurality of circumferential positions, and the peripheral part of the flange is held by engagement after separation of the separation part Has a possible annular protrusion (E) The projecting portion is divided into a plurality of projecting elements at least at the tip end side by a plurality of slits formed so as to cross in the radial direction, and the projecting elements are circumferentially arranged on the peripheral edge of the flange provided in the separating portion. (F) A gap is provided between the ceiling wall including the flange and the lower surface of the upper end wall before separation of the separation portion.

In the above-mentioned cap, the projecting portion is in contact with the peripheral edge of the flange provided in the separation portion before separation, and can be locally deformed radially outward at a plurality of locations in the circumferential direction, and the ceiling wall including the flange before separation of the separation portion Since the gap is provided between the upper end wall and the lower surface of the upper end wall, the holding of the separating portion by the protruding portion becomes gentle. As a result, even if an impact acts on the upper lid, and the upper lid is deformed, the projecting portion in contact with the separating portion is deformed, so the impact transmitted to the separating portion of the inner plug through the projecting portion is reduced. The Therefore, the connection part between the separation part and the main body side cylindrical part is prevented from being damaged.
Further, in the cap, the projecting portion is divided into a plurality of projecting elements at least at the distal end side by a slit formed so as to cross in the radial direction, and the projecting element is circumferentially disposed on the peripheral edge of the flange provided in the separating portion. Engage or abut at multiple locations. In this case, the projecting portion can be more easily deformed in the radial direction, and the impact force transmitted to the separating portion can be more effectively reduced. If the number of slits is small, the protrusions may be difficult to deform, so at least six locations are preferable. In addition, since a some protrusion element engages or contact | abuts to the periphery of a flange in several places, the holding | maintenance of the isolation | separation part by a protrusion part is a loose thing.

  According to still another aspect of the present invention, the upper lid has a screwing portion that can be attached to and detached from the container body side by a rotating operation, and the separating portion is pressed by pressing the separating portion by the rotating operation of the screwing portion. The separation part can be separated from the inner plug to form an opening.

  According to still another aspect of the present invention, the main body portion can include a main body side cylindrical portion that defines the opening. Further, the separation portion may have a separation portion side cylindrical portion that is offset to either the inner diameter side or the outer diameter side with respect to the main body side cylindrical portion.

  According to still another aspect of the present invention, the upper lid and the inner plug can be coupled to each other by screwing. In this case, since the upper lid and the inner stopper can be assembled in a separate process from the container body, the production process can be rationalized.

It is a disassembled perspective view of the cap for containers which is one Embodiment of this invention. The cap of the cap is shown, (a) is a plan view, (b) is a front sectional view, and (c) is a bottom view. The upper lid of the cap for containers of FIG. 1 is shown, (a) is front sectional drawing, (b) is a bottom view. It is the longitudinal cross-sectional view which showed each of the state before assembling | attaching the upper cover and inner stopper of a cap. It is the longitudinal cross-sectional view which showed the state which assembled | attached the upper cover and inner stopper of the cap. It is the longitudinal cross-sectional view which showed the state which assembled | attached the cap to the opening part of the container main body. It is the longitudinal cross-sectional view which showed the cap opening action of the cap. It is the longitudinal cross-sectional view which showed the state which removed the upper cover in the state which isolate | separated the isolation | separation part of the cap of the cap. It is the principal part longitudinal cross-sectional view which showed the state which the external force acted on the cap and the cap deform | transformed. (A)-(c) is a figure explaining the modification of the cap for containers shown in FIG. 1 etc., respectively.

  Hereinafter, specific embodiments of a container cap according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the cap 1 includes an inner plug 2 that is attached to the mouth portion 50 a of the container main body 50 that is a bottle, and an upper lid 3 that is attached to the inner plug 2 so as to cover the inner plug 2. . The cap 1 and the container main body 50 are a container 100 with a lid for storing and storing a liquid.

  The inner plug 2 is an integrally molded product made of resin, and includes a separation portion 4, a fitting portion 5, and a main body side cylindrical portion 6, as shown in FIGS. 2 (a) to 2 (c). Here, the fitting part 5 and the main body side cylindrical part 6 constitute a main body part 20 of the inner plug 2.

  As shown in FIG. 2 (b), the separation portion 4 of the inner plug 2 is a separation portion side tubular shape that is offset to the inner diameter side by the thickness of the main body side tubular portion 6 with respect to the main body side tubular portion 6. A portion 4a is provided. A ceiling wall 4b that closes the upper opening (opening OP described later) is stretched over the separation portion side tubular portion 4a. The ceiling wall 4b is formed with a flange 4c extending outward in the radial direction. And the lower end of the separation part side cylindrical part 4a is connected with the upper end of the main body side cylindrical part 6 by the thin score 7, as enlarged and shown in FIG.2 (b).

  As shown in FIG. 2 (b), the fitting portion 5 of the inner plug 2 is attached to the outer cylinder portion 5 a that is fixed in close contact with the outer peripheral wall of the mouth portion 50 a of the container body 50 and the inner peripheral wall of the mouth portion 50 a. It has an inner cylinder part 5b that is fixed in close contact, and a horizontal part 5c that is in close contact with the mouth part 50a and connects the outer cylinder part 5a and the inner cylinder part 5b. As shown in the enlarged view of FIG. 2C, the outer cylinder part 5a is formed with a large number of protrusions 5d over the entire inner peripheral surface of the outer cylinder part 5a. The protrusion 5d is fitted into the annular recess 50c of the mouth portion 50a of the container body 50 to firmly bond the inner plug 2 and the container body 50.

  The fitting part 5 of the inner plug 2 has a cylindrical part 5e at the top. And the external thread 5f which is a screwing part is formed in the outer peripheral surface of the cylindrical part 5e. The male screw 5f is screwed into a female screw of the upper lid 3 described later. A plurality (four in the embodiment) of ribs 5g are formed on the inner peripheral surface of the cylindrical portion 5e at equal intervals in the circumferential direction. The rib 5g reinforces the cylindrical portion 5e.

  The main body side cylindrical portion 6 of the inner plug 2 is formed in a conical cylindrical shape as a whole, has a lip 6a whose diameter increases upward at the end, and is used for pouring the liquid in the container main body 50. Improve cutting.

  The inner plug 2 forms an airtight or liquid tightly sealed space together with the container body 50 by a stopper. As shown in an enlarged view in FIG. 2B, the separating portion 4 of the inner plug 2 is cut off when the inner plug 2 is opened at the score 7, that is, when the inner plug 2 is first opened. OP (see FIG. 8) is formed.

  The upper lid 3 is an integrally molded product made of resin, and includes a curved side wall 3a and a flat upper end wall (ceiling wall) 3b as shown in FIGS. 3 (a) and 3 (b). The side wall 3a and the upper end wall 3b form a dome-like appearance and cover the inner plug 2 to protect it from the external environment such as dust and moisture. The side wall 3a is formed with a cylindrical portion 3c extending from the upper part of the inner surface in parallel with the axis that is the rotation axis AX of the upper lid 3 and extending downward, and the inner peripheral surface of the cylindrical portion 3c has a threaded portion. A female screw 3d that is screwed into the male screw 5f of the inner plug 2 is formed. In addition, a plurality of (eight in the embodiment) ribs 3e extending downward in parallel with the axis are formed on the outer peripheral surface of the cylindrical portion 3c at equal intervals in the circumferential direction. The rib 3e reinforces the cylindrical portion 3c. Further, a knurl 3f is formed on the lower outer peripheral surface of the side wall 3a. The knurled 3f has a function of preventing slipping when the upper lid 3 is rotated in the circumferential direction.

  The upper lid 3 includes an annular protrusion 8 that extends downward on the lower surface of the upper end wall 3b. In the protruding portion 8, slits 8b are formed at a plurality of locations in the circumferential direction (eight locations in the embodiment). Thereby, the protrusion part 8 is divided and formed into a plurality (eight in the embodiment) of protrusion elements 80 at least on the tip side. As a result, the protrusion 8, that is, the lower end portion of the protrusion element 80 is easily deformed. In other words, the protruding portion 8 receives a force from the flange 4c of the separating portion 4 or the like at any of a plurality of locations along the circumferential direction (specifically, at the position of any divided protruding element 80). In addition, the tip side can be locally deformed radially outward. As shown in an enlarged view in FIG. 3A, the inner peripheral surface 8a of the protruding portion 8 or the protruding element 80 is formed substantially parallel to the rotation axis AX of the upper lid 3 extending in the upper and lower AB directions, and the outer peripheral surface 8f is The projecting portion 8 or the projecting element 80 is formed in a tapered shape so that the thickness becomes thinner toward the lower end.

  Further, a claw 8c for engaging with the flange 4c of the inner plug 2 at the time of opening is formed on the inner peripheral surface 8a at the lower end of the protruding portion 8 of the upper lid 3 toward the center direction where the rotation axis AX of the upper lid 3 is located. Yes. That is, the upper end wall 3b functions as a holding portion that can hold the separating portion 4 of the inner plug 2 by including the protruding portion 8 and the claw 8c.

  Returning to FIG. 1, the container body 50 is an integrally molded product made of resin or an integrally molded product made of glass, and the mouth portion 50 a is more narrowed than the other barrel portion 50 b. And the annular recessed part 50c is formed in the outer peripheral surface of the opening part 50a in the circumferential direction.

  Hereinafter, the assembly of the cap 1 and the opening operation of the lidded container 100 will be described with reference to FIGS.

  First, as shown in FIG. 4, the cap 1 is assembled by putting the upper lid 3 on the inner plug 2, screwing the female screw 3 d of the upper lid 3 into the male screw 5 f of the inner plug 2, and rotating the upper lid 3. As shown in FIG. 5, the upper lid 3 is engaged with the inner plug 2. At that time, the claw 8c passes through the flange 4c while the protruding portion 8 is expanded outward by the flange 4c of the separating portion 4 of the inner plug 2. When the claw 8c has completely passed through the flange 4c, the protruding portion 8 is restored by elasticity, and the claw 8c engages while abutting so as to wrap around the flange 4c. In this embodiment, since the protruding portion 8 is divided into a plurality of portions by the slits 8b and is in contact with the flange 4c by a plurality of independent protruding elements 80, each protruding element 80 is easily deformed and the cap 1 is easily assembled. be able to.

  Next, the cap 1 is attached to the mouth portion 50 a of the container body 50. As shown in FIG. 6, the cap 1 is attached to the container body 50 by pushing the mouth part 50 a of the container body 50 between the outer cylinder part 5 a and the inner cylinder part 5 b of the cap 1. In this state, the protrusion 5d of the inner plug 2 is fitted into the annular recess 50c of the container main body 50 to ensure the coupling between the inner plug 2 and the container main body 50.

  In order to store the liquid in the container, first, the liquid is injected into the container main body 50, and the previously assembled cap 1 is attached to the container main body 50 as described above. The inner stopper 2 may be attached to the container body 50 into which the liquid has been injected, and the upper lid 3 may be attached to the inner stopper 2 thereafter.

  In order to take out the contents from the lidded container 100 in this state, first, the upper lid 3 is rotated in the direction of tightening, that is, clockwise. Then, as shown in FIG. 7, the separation part 4 of the inner plug 2 is pushed in by the lower surface of the upper end wall 3 b of the upper lid 3, whereby the score 7 is cut and the separation part 4 becomes the main body of the main body part 20. It becomes possible to detach from the side tubular portion 6. That is, the cap 1 is in an opened state or a separated state in which the opening part OP (see FIG. 8) is formed in the main body part 20. In this state, the flange 4 c of the separating portion 4 is accommodated in the inner peripheral surface 8 a of the protruding portion 8 and is in a state of being close to the upper end wall 3 b of the upper lid 3.

  When the upper cover 3 is rotated in the loosening direction, that is, counterclockwise as shown in FIG. 8 in the unsealed state where the separation section 4 is separated from the main body section 20 of the cap 1, the nail of the protruding section 8 is accompanied by the upper cover 3. The separation part 4 restrained by 8c is detached from the main body side cylindrical part 6 of the inner plug 2. Then, when the upper lid 3 is lifted upward, as shown in FIG. 6, the flange 4 c comes into contact with the claw 8 c of the protruding portion 8, and the separating portion 4 is pulled up as the upper lid 3 rises. Is easily detached from the main body side cylindrical portion 6 of the inner plug 2. As described above, the inner plug 2 is opened, and the liquid in the container body 50 can be poured out from the formed opening OP. Further, the upper lid 3 is detachable from the container body 50.

  In order to attach the upper lid 3 (holding the separation part 4) to the container body 50 thus opened, the female screw 3d of the upper lid 3 is screwed again with the male screw 5f of the inner plug 2, The upper lid 3 is rotated clockwise. Then, the separation part 4 held by the upper lid 3 by the above-described opening is fitted into the opening OP of the main body side cylindrical part 6 of the inner plug 2 and the opening OP is closed. This state is the same as in FIG. At this time, the separation unit 4 functions as an inner seal plug.

  As described above, in the present embodiment, since the separation portion 4 is cut off from the inner plug 2 in the opening operation with the cap 1, the cap 1 is unsealed along with the rotation operation of the upper lid 3 while having a relatively simple structure. The inside plug 2 can be opened, and the opening operation becomes easy. And since the isolate | separated isolation | separation part 4 is hold | maintained at the upper cover 3, there is no possibility of loss, and it is stored hygienically.

  Moreover, in the container 100 with a lid | cover of this embodiment, it is considered that the container 100 with a lid inverts upside down like the case where the container 100 with a lid is dropped on the floor, and falls. In this case, as shown in FIG. 9, even if the impact F acts on the side wall 3a of the upper lid 3 and the corner 3r of the upper end wall 3b and thereby the corner 3r is deformed, the projecting portion 8 is deformed. The impact transmitted to the separating portion 4 of the inner plug 2 through the protruding portion 8 is alleviated. Therefore, the score 7 that connects the separation part 4 and the main body side cylindrical part 6 is prevented from being damaged.

  The protruding portion 8 of the upper lid 3 is divided by the slit 8b to facilitate deformation with respect to the external force in the radial direction of the protruding portion 8, but the protruding portion 8 is completely divided into a plurality of protruding elements 80. As shown in the partially enlarged bottom view of FIG. 10 (a), the groove 108b is formed on the inner peripheral surface 8a, or the protrusion 8 is locally thinned (as a kind) A wide groove) may be formed, and the protrusion 8 may be easily deformed in the radial direction. In this case, it is possible to give a difference in the amount of deformation outward in the radial direction in the portions 180 on both sides sandwiching any one groove 108b, and it is possible to deform the single portion 180 so as to bend outward.

  Further, it is not necessary that the plurality of projecting elements 80 constituting the projecting portion 8 be curved along the circumference, and each projecting element 80 is formed in a flat plate shape as shown in the partial enlarged bottom view of FIG. It can also be used as a member. In this case, the engagement between the separating portion 4 and the protruding portion 8 is relatively weak. However, when there is an impact on the upper lid 3 due to dropping or the like, each protruding element 80 is easily deformed, and the resistance to the impact is easily increased. Become.

  Further, the slit 8b that divides the projecting portion 8 into the plurality of projecting elements 80 does not need to extend to the lower surface of the ceiling wall 3b of the upper lid 3 that is the base of the projecting portion 8, and is a partial enlarged side view of FIG. As shown, an annular base portion 8k that connects the plurality of projecting elements 80 may be provided on the base side of the projecting portion 8.

  Further, in the present embodiment, the inner stopper 2 is a stopper type composite cap, and the contents are sealed together with the container body 50 together with the container body 50 by using the fitting portion 5 in an airtight or liquid tight manner. The liquid as the contents of the container main body 50 can be stored not only by the stopper but also by, for example, screw-type sealing or welding.

  Moreover, in the said embodiment, although the inside plug 2 which offset the separation part side cylindrical part 4a to the inside by the thickness of the main body side cylindrical part 6 rather than the main body side cylindrical part 6 is shown, The part-side tubular part 4 a may be offset outward from the body-side tubular part 6 by the thickness of the body-side tubular part 6.

  Moreover, in the said embodiment, the seal | sticker which is a cyclic | annular low protrusion can be provided in at least one of the outer peripheral surface of the isolation | separation part side cylindrical part 4a, and the internal peripheral surface of the main body side cylindrical part 6. FIG. By providing such a seal, a reliable liquid-tight state can be ensured between the separation portion side tubular portion 4 a and the main body side tubular portion 6. That is, it is possible to reliably prevent liquid leakage during reuse that is repeated after the first opening.

  In the above embodiment, the upper lid 3 is screwed into the inner plug 2, but the upper lid 3 may be screwed into the container body 50.

  In the above embodiment, the claw 8c of the protrusion 8 of the upper lid 3 is engaged with the flange 4c of the inner plug 2 before opening, and the claw 8c is engaged with the flange 4c after opening to hold the flange 4c. The claw 8c of the protrusion 8 of the upper lid 3 may be brought into contact with the flange 4c of the inner plug 2 before opening, and the claw 8c may be engaged with and hold the flange 4c after opening.

DESCRIPTION OF SYMBOLS 1 ... Cap, 2 ... Inner plug, 3 ... Upper lid, 3a ... Side wall, 3b ... Upper end wall, 3c ... Cylindrical part, 3d ... Female screw, 3e ... Rib, 3f ... Knurl, 4 ... Separation part, 4a ... Separation Part-side cylindrical part, 4b ... ceiling wall, 4c ... flange, 5 ... fitting part, 5a ... outer cylinder part, 5b ... inner cylinder part, 5c ... horizontal part, 5d ... projection, 5e ... cylindrical part, 5f ... male screw, 5 g ... rib, 6 ... main body side cylindrical part, 6a ... lip, 7 ... score, 8 ... projecting part, 8a ... inner peripheral surface, 8b ... slit, 8c ... claw, 20 ... main body part, 50 ... Container body, 50a ... mouth, 100 ... container with lid, OP ... opening

Claims (4)

Forming a sealed space for enclosing contents together with the container body, and an inner plug having a separation part for forming an opening in the sealed space;
A cap of a container comprising an upper lid having a holding means for separating the separating portion from the inner plug and forming the opening and holding the separating portion when separating the separating portion. ,
The inner plug has a main body portion that is connected to the separation portion at the opening and is locked to the container main body,
The holding means extends downward from the lower surface of the upper end wall of the upper lid and abuts against the periphery of the flange formed on the upper part of the separation part before separation accompanying opening, and locally extends radially outward at a plurality of circumferential positions. An annular protrusion that is deformable and capable of holding the periphery of the flange by engagement after separation of the separation;
The projecting portion is divided into a plurality of projecting elements at least on the distal end side by a plurality of slits formed so as to cross in the radial direction, and the projecting elements are arranged in the circumferential direction on the periphery of the flange provided in the separating portion. Engaging or abutting at a point,
A cap for a container, wherein a gap is provided between a ceiling wall including the flange and a lower surface of the upper end wall before separation of the separation portion.   The upper lid has a screwing portion that enables attachment to and detachment from the container main body by a rotating operation, and the separating portion is separated from the inner plug by pressing the separating portion by the rotating operation of the screwing portion. The container cap according to claim 1, wherein the opening is formed. The main body portion has a main body side cylindrical portion that defines the opening,
The container according to claim 2, wherein the separation part has a separation part side cylindrical part that is offset to either the inner diameter side or the outer diameter side with respect to the main body side cylindrical part. cap.   The container cap according to any one of claims 2 and 3, wherein the upper lid and the inner stopper are coupled to each other by screwing.

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