JP2005231719A - Lid, and container on which the lid is put - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid to be securely fixed to a container to prevent contents from easily flowing even if the container falls, and the container. <P>SOLUTION: The lid 1 includes a flat plate 4 for closing an opening 3 of the container 2, an outer tube 5 extending from the outer edge of the flat plate 4 for covering the outer peripheral surface 12 of a mouth 6 of the container 2, an inner tube 8 provided inside the outer tube 5 of the flat plate 4 to face the inner peripheral surface 7 of the mouth, an outer tube protrusion 9 inwardly protruding from the lower end of the outer tube 5 along an approximately entire circumference, and an inner tube protrusion 10 outwardly protruding from the lower end of the inner tube 8 along the approximately entire circumference. The container 2 includes an outer peripheral engaging part 13 on the outer peripheral surface 12 of the mouth and an inner peripheral engaging part 14 on the inner peripheral surface. The outer peripheral protrusion 13 is engaged with the outer peripheral engaging part 13, and the inner tube protrusion 10 is engaged with the inner peripheral engaging part 14. With this constitution, the lid 1 is fixed to the container 2 via double engagement of the inner and outer peripheries of the container 2. Therefore, there is little possibility of the contents easily flowing out even if the container 2 falls. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lid and a container to which the lid is mounted, and more particularly to a lid and a container for a liquid container such as a milk bottle.

Conventionally, as a lid of a container such as a milk bottle, a top plate (corresponding to the flat plate portion of the present application) that covers the mouth portion of the container and the inner peripheral surface of the mouth portion of the container that supports the top plate Formed in a single piece with a cylindrical foot portion (corresponding to the inner tube portion of the present application), and provided with a ring-shaped projection portion protruding outward along the outer peripheral surface at the center portion of the foot portion, There is a ring-shaped convex part (corresponding to the protruding part of the present application) provided along the outer peripheral surface in the lower part, and a heat-shrinkable synthetic material with a cylindrical peeling perforation on the lid. The container is sealed with a resin seal. And the front-end | tip of the projection part of a cover body is closely_contact | adhered to the internal peripheral surface surface of a mouth part, and a convex part is closely_contact | adhered to the concave surface of the lower part of the step part formed in the internal peripheral surface surface of a mouth part. (For example, refer to Patent Document 1).
Japanese Patent No. 3421767

  However, once the synthetic resin seal is removed, the lid and the container are fixed only in close contact with the convex part of the foot and the concave surface of the lower part of the step on the inner wall of the container. Therefore, for example, when the container falls down and the foot is pushed by the liquid inside, the lid easily comes off and the liquid inside flows out. Further, when the lid is pushed from above, there is a problem that the foot part is easily lowered, a gap is opened between the container and the foot part, and the liquid is more likely to flow out. Therefore, a heat-shrinkable synthetic resin seal is indispensable, and extra materials and processes are required for the seal. There is also a problem that the ring-shaped protrusion breaks when the lid is opened and closed several times, and the fragments fall into the liquid inside.

  The present invention has been made to solve such a problem, and provides a lid that is firmly fixed and does not easily flow out of contents even if it falls down, and a container to which the lid is attached. With the goal.

  To achieve the above object, the lid according to claim 1 includes a flat plate portion that closes the opening of the container, and an outer cylinder that covers the outer peripheral surface of the mouth portion of the container that extends downward from the outer edge of the flat plate portion. And an inner cylinder part facing the inner peripheral surface of the mouth part provided on the inner side of the outer cylinder part of the flat plate part, and further, at the lower end part of the outer cylinder part, An outer cylinder protruding portion protruding inward over the circumference, and the outer cylinder protruding portion engages with an outer periphery engaging portion provided on an outer peripheral surface of the mouth portion, and a lower end of the inner cylinder portion The inner cylinder projection portion protruding outward is provided at substantially the entire circumference, and the inner cylinder projection portion engages with an inner circumferential engagement portion provided on an inner circumferential surface of the mouth portion. It is characterized by that.

  In addition, the container to which the lid according to claim 1 is attached according to claim 2 is an outer peripheral engagement portion for engaging with the outer cylindrical protrusion on the outer peripheral surface of the mouth portion over substantially the entire periphery. And an inner peripheral engagement portion for engaging with the inner cylindrical projection portion over substantially the entire circumference on the inner peripheral surface of the mouth portion.

  According to these lids and containers, when the lid is attached to the container, the engagement between the inner cylinder protrusion of the lid and the inner peripheral engagement part of the container, and the outer cylinder protrusion of the lid It is fixed by double engagement, that is, engagement over substantially the entire circumference of the portion and the outer peripheral engagement portion of the container.

  The container according to claim 3 is the container according to claim 2, wherein the outer periphery engaging portion is formed so that the diameter increases in a stepped manner in a direction from the bottom of the container toward the opening. It is a step part.

  According to this lid body, when the lid body is attached to the container, the outer cylinder projection of the lid body is engaged with the outer peripheral stepped portion.

  According to a fourth aspect of the present invention, in the lid according to the first aspect, the inner peripheral engaging portion is an inner peripheral stepped portion that is provided on the inner peripheral surface of the mouth portion and protrudes inward. A groove is provided at the top of the inner cylindrical projection of the lid, and the inner peripheral step is fitted into the groove.

  Further, the container according to claim 5 is the container according to claim 2 or 3, wherein a groove is provided in a top portion of the inner cylinder projection portion of the lid, and the inner peripheral engagement portion is An inner circumferential step provided on the inner circumferential surface of the mouth and projecting inward of the container, wherein the inner circumferential step is fitted into the groove.

  According to these lids and the container, when the lid is mounted on the container, the tip of the inner peripheral stepped portion is fitted into the groove provided on the top of the inner cylindrical projection of the lid.

  According to a sixth aspect of the present invention, in the lid according to the first aspect, the inner peripheral engagement portion is formed by gradually decreasing the inner diameter of the mouth portion in a direction from the bottom of the container toward the opening. A groove is provided at the top of the inner cylindrical projection of the lid, and the corner is fitted into the groove.

  According to claim 7, in the container according to claim 2 or 3, a groove is provided in a top portion of the inner cylinder projection portion of the lid body, and the inner peripheral engagement portion is formed by the container mouth portion. A corner portion formed by gradually decreasing the inner diameter of the container in the direction from the bottom portion of the container toward the opening, so that the corner portion fits into the groove when the lid is attached. It is characterized by becoming.

  According to these lids and containers, when the lid is mounted on the container, the tip of the corner is fitted into the groove provided on the top of the inner cylinder projection of the lid.

  According to the lid according to claims 1 and 2 of the present invention and the container to which the lid is attached, when the lid is attached to the container, both are fixed doubly, so even if the container falls down The content is less likely to leak out easily. Therefore, a further sealing structure such as a heat-shrinkable synthetic resin seal is unnecessary.

  According to the container of the third aspect of the present invention, the engagement between the outer peripheral engagement portion and the outer cylinder projection portion can be provided with a simple structure, and the manufacturing cost can be reduced.

  According to the lid and the container to which the lid is attached according to the fourth and fifth aspects of the present invention, when a force is applied to the lid from above, the groove of the inner cylindrical projection and the inner peripheral step are engaged. The inner cylinder is difficult to move up and down because they are aligned. Therefore, it is possible to provide a highly airtight container and lid structure in which contents such as liquid are unlikely to leak from the gap between the groove and the inner peripheral step. Further, the structure can be provided with a simple structure in which an inner peripheral step portion is provided on the inner periphery of the container and a groove is provided on the inner cylinder projection portion of the lid, and the manufacturing cost is low.

  According to the lid body and the container to which the lid body is attached according to claims 6 and 7 of the present invention, when the force is applied to the lid body from above, Since the groove of the cylindrical protrusion is engaged with the corner of the inner periphery, the inner cylinder is difficult to move up and down. Therefore, contents such as liquid are not likely to leak from the gap between the corner and the inner peripheral step, and a highly sealed container and lid structure can be provided. Further, the structure can be provided with a simple structure in which corners are provided in the inner periphery of the container and grooves are provided in the inner cylinder projection of the lid, and the manufacturing cost can be reduced. Moreover, since this engagement is achieved without providing a step portion on the inner wall of the mouth, dirt is unlikely to accumulate.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a lid according to the present invention and a container to which the lid is mounted will be described with reference to the accompanying drawings, taking a cap 1 and a milk bottle 2 as examples. However, the present invention is not limited to the milk bottle 2 and its cap 1, but may be a bottle for other liquids or a container other than the bottle. In the present specification, the top and bottom of the bottle 2 means the top and bottom when the opening direction of the bottle 2 is up, and the top and bottom of the cap 1 is based on the state where the cap 1 is attached to the bottle 2. Is.

  FIG. 1 is a partial sectional view showing an upper portion of a cap 1 and a bottle 2 to which the cap 1 is attached according to the first embodiment of the present invention. FIG. It is an enlarged view of a joint part. Here, the flat plate portion 4, the outer cylinder portion 5, and the inner cylinder portion 8 are integrally formed of a synthetic resin such as polyethylene for reasons such as being inexpensive and easy to manufacture, but are not limited thereto. , Other materials may be used. The bottle 2 is made of glass, but is not limited to this, and may be formed of other materials.

  As shown in the figure, the cap 1 includes a flat plate portion 4 that closes the opening 3 of the bottle 2, an outer cylinder portion 5 that extends from the outer edge portion of the flat plate portion 4, and an inner side of the outer cylinder portion 5 of the flat plate portion 4. And an inner cylinder portion 8 facing the inner peripheral surface 7 of the mouth portion 6 of the bottle 2.

  The lower end portion of the outer cylinder portion 5 of the cap 1 is slightly bent in an L shape over substantially the entire circumference of the outer cylinder portion 5 to form an outer cylinder protrusion 9.

  Corresponding to the outer tube projection 9, the outer peripheral surface 12 of the mouth 6 of the bottle 2 is smoothly suspended downward from the upper surface 6a of the mouth 6 and then bent inward at a substantially right angle. An outer peripheral step portion 13 is formed as an outer peripheral engagement portion that extends downward again and decreases in diameter downward. The outer peripheral surface 12 is then curved inward again and then continues to the lower bottle body 2a.

  Further, the lower end portion of the inner cylinder portion 8 of the cap 1 protrudes outwardly over the entire circumference and is provided with an inner cylinder projection portion 10. The top portion of the inner cylinder projection portion 10 has a cross-section “F”. A character-shaped groove 11 is provided. The inner surface of the groove 11 is composed of a groove upper surface 11a facing downward and a groove lower surface 11b facing upward, and the inner cylindrical protrusion 10 includes a protrusion upper part 10a above the groove 11 and a protrusion below the groove 11. And a lower part 10b.

  Correspondingly, the inner peripheral surface 7 of the mouth portion 6 of the bottle 2 continuously and smoothly hangs down from the upper surface 6a of the mouth portion, then bends inward at a substantially right angle and extends horizontally to form a horizontal surface 7a. After that, the inclined surface 7b is formed obliquely downward and the inner peripheral step portion 14 is defined over the entire circumference of the mouth portion 6.

  Next, the operation of this embodiment will be described. When the cap 1 is placed on the bottle 2 and pushed from above, the outer cylinder projection 9 is first pushed outward in accordance with the shape of the outer circumference 12 of the bottle 2 and elastically deformed. To do. When the cap is pushed as it is, the outer cylinder protruding portion 9 passes over the outer step portion 13, the outer cylinder protruding portion 9 deformed outward is returned, and the outer cylinder protruding portion 9 is engaged with the outer step portion 13.

  Further, on the inner peripheral surface 7 of the bottle 2, first, the protruding portion lower part 10 b contacts the tip of the inner peripheral step portion 14. When the cap 1 is pushed as it is, the lower surface of the projection lower portion 10b is pushed by the inner circumferential step portion 14 and elastically deforms inward. When the cap is further pushed, the projection lower portion 10b passes the inner circumferential step portion 14, the projection lower portion 10b deformed inwardly returns, and the inner circumferential step portion 14 is fitted into the groove 11 (FIG. 1). In this case, even if the cap 1 is pushed further, the horizontal groove upper surface 11a of the projection upper part 10a and the inner horizontal surface 7a of the bottle 2 are in contact with each other, so that the cap 1 does not fall. In this way, the cap 1 is fixed to the bottle 2 by the engagement of the outer cylinder part 5 and the inner cylinder part 8 of the cap with the mouth part 6 of the bottle 2.

  When removing the cap 1, the outer cylinder protrusion part 9 is pushed upward with a fingertip, and engagement with the outer peripheral step part 13 is cancelled | released. In this case, since the engagement is slight, the outer cylinder portion 5 can be easily moved upward. Further, when the cap 1 is lifted as it is, the lower part 10b of the inner cylinder protrusion 10 is elastically deformed inward while sliding on the inclined surface 7b of the inner periphery 7 of the bottle 2, and the inner peripheral step part 14 and the inner cylinder protrusion part. The engagement with the ten grooves 11 is released, and the cap 1 is removed.

  As described above, according to the present embodiment, the cap 1 and the bottle 2 are fitted over the entire circumference of the inner cylinder protrusion 8 of the cap 1 and the inner peripheral step 14 of the bottle 2, and the outer cylinder protrusion of the cap 1. It is fixed by a double engagement of engagement between the portion 8 and the outer peripheral step portion 13 of the bottle 2 over substantially the entire circumference. Further, when the bottle 2 falls down and a force is applied to the cap 1 from the inside by the liquid or the like inside, the liquid is prevented from flowing out due to the close contact with the upper surface of the lower portion 10b of the groove 11 and the inclined surface 7b. Therefore, there is little possibility that the contents will flow out even if the container falls.

  Further, the engagement between the outer cylinder projection 9 of the cap 1 and the outer peripheral step 13 of the bottle 2 is provided with an outer peripheral step 13 formed by increasing the diameter of the bottle 2 in a step-like manner upward. The simple structure of engaging the projection 9 is achieved, and the fitting of the inner cylinder projection 8 of the cap 1 and the inner peripheral step 14 of the bottle 2 over substantially the entire circumference is the inner peripheral surface 7 of the mouth. This can be achieved with a simple structure in which the inner peripheral step 14 projecting inward is provided, the groove 11 is provided at the top of the inner cylindrical projection 8 of the cap 1, and the inner peripheral 14 step is fitted into the groove 11. When fixed in this manner, when a force is applied to the cap 1 from above, the groove 11 of the inner cylinder projection 10 and the inner peripheral step 14 are fitted, so that the inner cylinder 8 moves up and down. Hard to do. Therefore, contents such as milk are difficult to leak from the gap between the groove 11 and the inner peripheral step portion 14, and high sealing performance can be provided between the bottle 2 and the cap 1. Accordingly, the manufacturing cost can be reduced also in this respect.

  Next, a second embodiment of the present invention will be described. FIG. 2 is a partial cross-sectional view showing a cap 21 and a bottle 22 to which the cap 21 is attached according to the second embodiment. The difference between this embodiment and the bottle 2 of the first embodiment is that the inner peripheral step portion 14 (see FIG. 1) is not provided on the inner peripheral surface 27 of the mouth portion 26 of the bottle 22, Instead, the inner peripheral surface 27 has a shape in which the inner diameter gradually decreases from bottom to top and then gradually increases to reach the opening 23. As a result, the inner peripheral surface 27 has a corner portion 38 of about 90 °. ing. In addition, a groove 31 is provided in the inner cylinder protrusion 30 of the cap 21 so as to receive the shape of the corner portion 28.

  Further, the difference between the present embodiment and the cap 1 of the first embodiment is that the shape of the groove 31 receives the corner portion 38, so that the cross-section is inverted “<”.

  The operational effects of this embodiment are substantially the same as those of the first embodiment, except that when the cap 21 is attached to the bottle 22, the corner portion 38 of the bottle 22 is fitted into the groove 31 of the cap 21. And since the recessed part like 1st Embodiment does not exist in the internal peripheral surface 27 of the opening part 26 of the bottle 2, there exists an effect that a dirt does not accumulate easily.

  Next, a third embodiment of the present invention will be described. FIG. 3 is a partial cross-sectional view showing a cap 41 and a bottle 42 fitted with the cap 41 according to the third embodiment. The difference between the present embodiment and the invention according to the first embodiment is that the lower surface 55 of the inner peripheral step portion 54 of the bottle 42 forms a convex surface, and the groove 51 provided in the inner cylinder portion 48 receives the convex surface. The point is the shape.

  The operational effect of the present embodiment is substantially the same as that of the first embodiment, but the lower surface 55 of the inner peripheral step portion 54 of the bottle 42 is a convex surface, and the groove 51 provided in the inner cylinder portion 48 receives the convex surface. Therefore, both can be bonded more firmly and a strong sealing force can be obtained. Therefore, it can be used when sealing is required.

  Next, a fourth embodiment of the present invention will be described. FIG. 4 is a partial sectional view showing a cap 61 and a bottle 62 fitted with the cap 61 according to the fourth embodiment. The difference between the present embodiment and the invention according to the first embodiment is that an inner peripheral surface groove portion 74 is provided on the inner peripheral surface 67 of the bottle 62, and the inner cylinder of the inner cylindrical portion 68 of the cap 61. The protrusion 70 is engaged with the groove 74.

  When the cap 61 is attached to the bottle 62, the outer cylinder projection 69 and the outer peripheral step 73 are engaged, the inner cylinder protrusion 70 and the inner peripheral groove 74 are engaged, and the cap 61 is fixed to the bottle 62.

  According to this, in addition to the effect of the first embodiment, the shape of the bottle 62 and the cap 61 becomes simpler, and therefore, it can be formed easily and inexpensively.

  In addition, this invention is not limited to the said embodiment, A various change is possible.

It is a fragmentary sectional view of the cap and bottle of a 1st embodiment of the present invention. It is an enlarged view of the engaging part of the cap and bottle of FIG. It is an expanded partial sectional view of the engaging part of the cap and bottle of 2nd Embodiment of this invention. It is an expanded partial sectional view of the engaging part of the cap and bottle of 3rd Embodiment of this invention. It is an expanded partial sectional view of the engaging part of the cap and bottle of 4th Embodiment of this invention.

Explanation of symbols

1,21,41,61 Cap (lid)
2,22,42,62 bottles (containers)
4,24,44,64 Flat plate portion 5,25,45,65 Outer tube portion 8,28,48,68 Inner tube portion 9,29,49,69 Outer tube projection
10,30,50,70 Inner tube protrusion
11,31,51 groove
13,33,53,73 Outer peripheral step (outer peripheral engagement part)
14,54 Inner peripheral step
38 corners
74 Inner peripheral groove

Claims (7)

A flat plate portion that closes the opening of the container;
An outer cylinder portion that extends downward from the outer edge of the flat plate portion and covers the outer peripheral surface of the mouth portion of the container;
An inner cylinder part facing the inner peripheral surface of the mouth part provided on the inner side of the outer cylinder part of the flat plate part,
Furthermore, the lower end portion of the outer cylinder portion is provided with an outer cylinder protrusion portion protruding inward over substantially the entire circumference, and the outer cylinder protrusion portion engages with an outer peripheral engagement portion provided on an outer peripheral surface of the mouth portion. Is supposed to
The lower end portion of the inner cylinder portion is provided with an inner cylinder protrusion portion protruding outward over substantially the entire circumference, and the inner cylinder protrusion portion engages with an inner periphery engagement portion provided on an inner peripheral surface of the mouth portion. A lid characterized in that it is configured to do so. Provided on the outer peripheral surface of the mouth portion with an outer peripheral engagement portion for engaging with the outer cylinder projection over substantially the entire periphery,
The container to which the lid according to claim 1 is mounted is provided with an inner peripheral engagement portion for engaging with the inner cylindrical projection over substantially the entire periphery on the inner peripheral surface of the mouth portion. .   The container according to claim 2, wherein the outer peripheral engaging portion is an outer peripheral stepped portion formed so as to increase in diameter in a step shape in a direction from the bottom of the container toward the opening. The inner peripheral engagement portion is an inner peripheral stepped portion provided on the inner peripheral surface of the mouth portion and protruding inward.
A groove is provided at the top of the inner cylindrical protrusion of the lid,
The lid according to claim 1, wherein the inner peripheral stepped portion is fitted into the groove. A groove is provided at the top of the inner cylindrical protrusion of the lid,
The inner peripheral engaging portion is an inner peripheral stepped portion provided on the inner peripheral surface of the mouth portion and protruding inward of the container,
The container according to claim 2 or 3, wherein the inner circumferential step portion is fitted into the groove. The inner peripheral engagement portion is a corner portion formed by gradually increasing the inner diameter of the mouth portion in a direction from the bottom portion of the container toward the opening,
A groove is provided at the top of the inner cylindrical protrusion of the lid,
The lid according to claim 1, wherein the corner is fitted into the groove. A groove is provided at the top of the inner cylindrical protrusion of the lid,
The inner peripheral engagement portion is a corner portion formed by gradually increasing the inner diameter of the container mouth after gradually decreasing in the direction from the bottom of the container toward the opening,
The container according to claim 2 or 3, wherein the corner is fitted into the groove when the lid is attached.

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