JP2013023221A - Container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new container hardly causing leakage of a storage object or pollution of the storage object even when being exposed to variation of outside atmosphere pressure occurring in air transport.SOLUTION: In this container 1 including a container body 2, an inner lid 3 internally fitted to an opening 22 of the container body 2, and an outer lid 4 externally fitted to the opening 22 of the container body 2, a tongue piece part 32 drooping toward the undersurface 34 side of the inner lid 3 along an edge of the inner lid 3 is annularly formed, and the outer peripheral surface of the tongue piece part 32 is tightly fitted to the inner peripheral surface of the opening 22 when the inside of the container 1 is set at positive pressure with respect to the atmospheric pressure outside the container 1.

Description

  The present invention relates to a container that includes a container body, an inner lid that is fitted into the opening of the container body, and an outer lid that is fitted into the opening of the container body.

  A paste-like conductive material such as gold or silver used for printed circuit board wiring is usually housed in a sealed container that is doubly covered by an outer lid and an inner lid and is used for transportation and storage (for example, See Patent Document 1 below).

  As shown in the exploded perspective view of FIG. 12 and the enlarged sectional view of FIG. 13, the container (container with lid) 10 described in Patent Document 1 is fitted into the container body 20 and the inside of the opening of the container body 20. The outer lid 40 is fitted to the outer side of the opening of the container body 20, and a flange 301 is provided on the outer periphery of the inner lid 30 to contact the opening end of the container body 20. A bulging portion 401 that prevents the inner lid 30 from being detached from the outer lid 40 due to the engagement with the flange 301 is formed on the inner circumference of the bulging portion. An engagement protrusion 201 that can be engaged with the engagement groove 402 is formed on the outer peripheral surface of the container body 20, an engagement protrusion 302 is provided on the outer peripheral surface of the inner lid 30, and the inner peripheral surface of the container main body 20 is provided. An engagement recess 202 is formed, and is formed between the opposed surfaces of the inner lid 30 and the container body 20. It is characterized in that the engagement force of the engagement protrusion 201 and the engagement recess 202 is stronger than the engagement force of the bulging portion 401 and the flange 301.

Japanese Utility Model Publication No. 5-88653

  The container 10 described in Patent Document 1 has a structure in which temporary airtightness is ensured by sandwiching the flange 301 between the open end of the container body 20 and the outer lid 40. When a paste-like conductive material is housed in a container 10 having a simple structure and used for air transportation, the pressure inside the container 10 becomes positive with respect to the outside air when the aircraft is lifted after takeoff. The conductive material stored in the container 10 may leak together with the air inside. On the other hand, when the aircraft descends, the atmospheric pressure in the container 10 becomes negative with respect to the outside air, and the outside air is sucked into the container 10 together with the foreign matter contained in the outside air. The conductive material may be contaminated.

  The International Air Transport Association (IATA) has strict standards for the tightness of this type of container, and containers that leak contents due to changes in atmospheric pressure cannot be used for air transportation.

  The present invention has been developed in order to solve the technical problem, and is a novel container that is unlikely to cause leakage of stored items or contamination of stored items even when exposed to changes in the external air pressure generated during air transportation. The purpose is to provide.

  The container of the present invention includes a container main body having a cylindrical opening, an inner lid that is fitted in the opening and closes the opening, and is externally fitted in the opening, and is an upper surface of the inner lid. A tongue piece portion hanging from the lower surface side of the inner lid is provided in an annular shape along the peripheral edge of the inner lid. And the tongue piece is formed of a resin having a flexural modulus of 100 to 500 MPa as a material, and the thickness of the tongue piece is 0.1 to 2 mm, so that the pressure outside the container is reduced. When the inside of the container is set to a positive pressure, the outer peripheral surface of the tongue piece is in close contact with the inner peripheral surface of the opening.

  In the container of the present invention, the inner lid is provided with a flange portion that comes into contact with the opening end of the opening when the inner lid is fitted into the opening. Therefore, it is preferable that the insertion depth on the lower surface side of the inner lid with respect to the opening and the projecting height on the upper surface side of the inner lid protruding from the opening end of the opening are defined.

  In the container of the present invention, the opening is provided with an engaging portion on the outer peripheral surface, and the outer lid is provided with an engaged portion on the inner peripheral surface of the peripheral wall, When the outer lid is fitted over the opening, the insertion portion of the opening relative to the outer lid is defined by engaging the engaging portion and the engaged portion. The insertion margin (L), the depth (H) of the peripheral wall of the outer lid, and the protruding height (T) on the upper surface side of the inner lid protruding from the opening end of the opening satisfy H> L + T. It is preferable that the outer lid and the inner lid are not in contact with each other when the inner lid is fitted into the opening and the outer lid is sheathed in the opening. It becomes.

  In the container of the present invention, the outer peripheral surface of the tongue piece portion is a tapered surface whose outer diameter is reduced toward the tip of the tongue piece portion, and the tongue piece portion on the inner peripheral surface of the opening is in close contact It is preferable that the portion to be formed has a taper surface whose diameter increases toward the opening end with the same taper rate as the outer peripheral surface of the tongue piece.

  In the container of the present invention, the inner lid is provided with a cylindrical rib that rises from the upper surface side along the periphery thereof, and the tongue piece is provided continuously with the base end of the rib. Is the preferred embodiment.

  In the container of the present invention, the inner lid is provided with a cylindrical rib that hangs down from the lower surface side along the periphery thereof, and the tongue piece is provided continuously with the tip of the rib. This is a preferred embodiment.

  The container of the present invention has an effect that even if the container is exposed to a change in the external air pressure that occurs during air transportation, leakage of stored items and contamination of stored items are less likely to occur.

1 is an exploded perspective view showing a container of the present invention according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view showing the container of the present invention according to Embodiment 1. FIG. 3 is a cross-sectional view illustrating a state in which the inside of the container is set to a positive pressure with respect to the atmospheric pressure outside the container with respect to the container of the present invention according to Embodiment 1. FIG. 4 is a front view (a) and a perspective view (b) illustrating various shapes of the container body. 5A to 5C are cross-sectional views illustrating various shapes of the inner lid. 6 is an exploded perspective view showing the container of the present invention according to Embodiment 2. FIG. FIG. 7 is a cross-sectional view showing the container of the present invention according to Embodiment 2. FIG. 8 is a partial front view showing an enlarged view of a part of the opening of the container body. FIG. 9 is an enlarged partial perspective view of the inner peripheral surface of the peripheral wall of the outer lid. FIG. 10 is a partial front view showing a state in which a ridge provided on the outer lid is engaged with a groove formed in the container main body. FIG. 11 is a cross-sectional view showing a state in which the inside of the container is positive with respect to the atmospheric pressure outside the container, with respect to the container of the present invention according to Embodiment 2. FIG. 12 is an exploded perspective view showing a conventional container. FIG. 13 is an enlarged partial sectional view showing a conventional container.

  Hereinafter, embodiments of the present invention will be described. Note that the present invention is not limited to this embodiment.

[Embodiment 1]
As shown in the exploded perspective view of FIG. 1 and the cross-sectional view of FIG. 2, the container 1 according to the present embodiment includes a container body 2, an inner lid 3, and an outer lid 4.

  The container body 2 is a bottomed cylindrical hollow body (with an internal capacity of about 5 liters), and a cylindrical opening 22 is provided at one end of the storage part 21. The container body 2 is formed by injection molding high density polyethylene (manufactured by FCFC, trade name: TAISOX 8050).

  On the outer peripheral surface of the opening 22, a male screw 23 that spirals around the outer peripheral surface is provided. The male screw 23 corresponds to the engaging portion in the claims.

  The inner lid 3 includes a disc-shaped inner lid body portion (thickness 3 mm) 31 and an annular tongue piece portion (height 10 mm, thickness) which hangs down to the lower surface 34 side along the periphery of the inner lid body portion 31. A flange portion (thickness 3 mm) 33 that projects toward the outer peripheral surface of the tongue piece portion 32 is provided on the periphery of the inner lid main body portion 31. The inner lid 3 is formed by injection molding low density polyethylene (trade name: Sumitomo Chemical Co., Ltd., trade name Sumikasen GA701, flexural modulus 195 MPa). The flexural modulus is measured in accordance with ASTM D1822-61T (hereinafter the same).

  The inner lid 3 is in a state where the lower surface 34 side (the front end side of the tongue piece portion 32) faces the container body 2, and the outer peripheral surface of the tongue piece portion 32 contacts the inner peripheral surface of the opening 22. In the contacted state, the container body 2 is fitted into the opening 22. At this time, since the outer peripheral surface of the tongue piece 32 and the inner peripheral surface of the opening 22 are flat surfaces without irregularities, the outer peripheral surface of the tongue piece 32 and the inner peripheral surface of the opening 22 are Are not excessively rubbed together. Therefore, when the inner lid 3 is fitted into the opening 22, almost no fine foreign matter is generated.

  When the inner lid 3 is fitted into the opening 22, the flange 33 is brought into contact with the opening end of the opening 22. Accordingly, the insertion depth (X) on the lower surface 34 side of the inner lid 3 with respect to the opening 22 and the protruding height (T) on the upper surface 35 side of the inner lid 3 protruding from the opening end of the opening 22. ) Is defined. In the present embodiment, the flange portion 33 and the inner lid main body portion 31 form a continuous surface on the upper surface 35 side of the inner lid 3, so the insertion depth (X) is 10 mm, and the protruding height The thickness (T) is the same as the thickness of the flange portion 33 (3 mm).

  The outer lid 4 includes a cylindrical peripheral wall 41 and a disk-shaped top plate 42 that covers one open end of the peripheral wall 41. The outer lid 4 is formed by injection molding polypropylene (manufactured by FCFC, trade name: TAIRPRO K8009).

  On the inner peripheral surface of the peripheral wall 41, a female screw 43 that spirals around the inner peripheral surface is provided. The female screw 43 corresponds to the engaged portion in the claims. The depth (H) of the peripheral wall 41 is set to 25 mm.

  The outer lid 4 is externally fitted to the opening 22 by engaging (screwing) the female screw 43 with the male screw 23 provided in the opening 22 of the container body 2. The insertion allowance (L) of the opening 22 with respect to the outer lid 4 is defined by the engagement end point of the female screw 43 and the male screw 23. In this embodiment, since the insertion allowance (L) is defined as 20 mm, the insert allowance (L), the depth (H) of the peripheral wall 41 of the outer lid 4, and the opening of the opening 22. The protruding height (T) on the upper surface 35 side of the inner lid 3 protruding from the end has a relationship of H> L + T. Thus, when the inner lid 3 is fitted into the opening 22 and the outer lid 4 is externally mounted on the opening 22, the outer lid 4 and the inner lid 3 are not in contact with each other. In other words, a clearance of 2 mm is formed between the flange portion 33 and the top plate 42. Therefore, when the outer lid 4 is fitted into the opening 22, the outer lid 4 is not rubbed with the flange portion 33, and therefore the fineness caused by the rubbing between the outer lid 4 and the flange portion 33. No extraneous matter is generated. In the present embodiment, since the material of the container body 2 and the material of the outer lid 4 are different, the frictional force generated when the male screw 43 and the female screw 23 are screwed together is generated. The outer lid 4 can be smoothly fitted onto the container body 2 and the generation of foreign matter can be further suppressed.

  For example, when a conductive material such as silver paste or gold paste is accommodated in the container 1 and used for air transportation, the external pressure gradually decreases as the aircraft rises, and the air pressure outside the container 1 is reduced. The internal pressure in the container 1 (in the storage part 21) becomes a positive pressure.

  When the internal pressure in the container 1 becomes a positive pressure with respect to the air pressure outside the container 1, as shown in FIG. 3, the air in the container 1 expands and is pushed and spread by the expanded air. 32 is in close contact with the inner peripheral surface of the opening 22. This prevents air and conductive material from leaking out of the container 1. Further, since air does not leak out, the internal pressure in the container 1 is hardly reduced compared to the internal pressure at the time of takeoff of the aircraft.

  At this time, the inner lid 3 may be pushed up or swollen by the expanded air toward the top plate 42 of the outer lid 4, but the insertion depth (X = 10 mm) of the inner lid 3 is as follows. The inner lid 3 that is pushed up or swollen because it is longer than the gap (= 2 mm) formed between the flange portion 33 and the top plate 42 is supported at a position in contact with the top plate 42. Is done. Thus, the inner lid 3 does not come off from the opening 22. The insertion depth (X) of the inner lid 3 is preferably at least twice as long as the gap formed between the flange portion 33 and the top plate 42, and more preferably at least three times. It is preferable to use a length.

  On the other hand, while the aircraft is descending, the external air pressure gradually increases. However, since the internal pressure in the container 1 is maintained at a positive pressure from the external air pressure until the aircraft is landed, fine foreign matters contained in the external air are not present. Inflow into the container 1 is suppressed.

  As a result, the container 1 of the present invention is less likely to cause leakage of stored items or contamination of stored items even when exposed to changes in the external air pressure generated during air transportation, and is defined by the International Air Transport Association (IATA). The standard of airtightness will be cleared.

  By the way, in the container 1 shown in FIG.1 and FIG.2, although the bottomed cylindrical hollow body was used as the said container main body 2, as the shape of the said container main body 2, the opening part 22 has even a cylindrical shape. If so, the shape of the other portions is not particularly limited. As another example of the container body 2, as shown in FIG. 4A, the storage portion 21 has a spindle shape, or as shown in FIG. 4B, the storage portion 21 has a substantially rectangular parallelepiped shape. Can be mentioned.

  In the container 1 shown in FIGS. 1 and 2, the outer lid 4 is composed of a cylindrical peripheral wall 41 and a disk-shaped top plate 42 covering one open end of the peripheral wall 41. As the top plate 42, it is not always necessary to use a flat disk-shaped one as long as it can cover one opening end of the peripheral wall 41. Therefore, as the outer lid 4, for example, the top plate 42 is curved in a dome shape toward the outside, the top plate 42 is provided with irregularities, or the top plate 42 is provided with a handle. It may be used.

  Further, in the container 1 shown in FIG. 1 and FIG. 2, the inner lid 3 is formed by integrally injecting the inner lid body 31 and the tongue piece 32. The part 31 and the tongue piece part 32 may be formed separately, and the tongue piece part 32 may be fixed to the inner lid main body part 31 by fixing means such as adhesion, welding, and fitting. In short, the tongue piece portion 32 is formed of a material having a bending elastic modulus of 100 to 500 MPa (preferably 200 ± 50 MPa) and has a thickness of 0.1 to 2 mm (preferably 1 ± 0.5 mm). It only has to be done.

  When the bending elastic modulus of the tongue piece portion 32 is less than 100 MPa or the thickness is less than 0.1 mm, the shape retaining property of the tongue piece portion 32 is deteriorated, and the container main body 2 is wrinkled during use. It has been confirmed that the adhesiveness to the inner peripheral surface of the resin deteriorates. On the other hand, when the flexural modulus of the tongue piece portion 32 exceeds 500 MPa or the thickness exceeds 2 mm, the flexibility deteriorates, and the internal pressure in the container 1 becomes positive with respect to the atmospheric pressure outside the container 1. At this time, it has been confirmed that the tongue piece portion 32 does not quickly adhere to the inner peripheral surface of the container body 2.

  Moreover, although the height of the said tongue piece part 32 is not specifically limited, Usually, it shall be 5-50 mm. If the height of the tongue piece 32 is less than 5 mm, the inner lid 3 may be easily detached from the opening 22 of the container body 2. When the height of the tongue piece portion 32 exceeds 50 mm, the tongue piece portion 32 is always in contact with a stored item (for example, a conductive material) stored in the container body 2 and leakage occurs due to capillary action. There is.

  In addition, in the container 1 shown in FIG.1 and FIG.2, although the low density polyethylene was used as a raw material of the said inner lid 3, as a raw material which forms the said tongue piece part 32, the bending elastic modulus of 100-500 MPa is used. If it has, it will not specifically limit. Examples of materials other than low density polyethylene include silicone rubber and polyurethane.

  Further, in the container 1 shown in FIGS. 1 and 2, the inner lid 3 is one in which an annular tongue piece portion 32 is directly provided on the periphery of the disc-shaped inner lid main body portion 31. The lid 3 is provided with a cylindrical rib 36 rising from the upper surface 35 side along the periphery of the disc-shaped middle lid main body 31 as shown in FIG. A rib that is provided continuously with the base end of the rib 36 or a cylindrical rib that hangs down from the lower surface 34 side along the periphery of the disc-shaped inner lid main body 31 as shown in FIG. 36 is preferably used, and the tongue piece portion 32 is preferably provided continuously with the tip of the rib 36. If the inner lid 3 is formed with a cylindrical rib 36 standing along the periphery of the disc-shaped inner lid main body 31, the shape retention of the inner lid 3 is improved, and the airtightness of the container 1 is improved. The property is further improved.

  Here, the inner lid 3 shown in FIGS. 5 (a) and 5 (b) is provided so that the flange portion 33 forms a continuous surface with the upper surface 35 of the inner lid 3. When fitted into the container body 2, the protruding height (T) on the upper surface 35 side of the inner lid 3 protruding from the opening end of the opening 22 is the same as the thickness of the flange 33. On the other hand, when the flange portion 33 is provided with a certain margin from the upper surface 35 of the inner lid 3 as in the case of the inner lid 3 shown in FIG. 5 (c), the flange portion 33 protrudes from the opening end of the opening portion 22. The protruding height (T) of the inner lid 3 on the upper surface 35 side is the thickness of the flange portion 33 plus the margin.

[Embodiment 2]
As shown in the exploded perspective view of FIG. 6 and the cross-sectional view of FIG. 7, the container 1 according to this embodiment includes a container body 2, an inner lid 3, and an outer lid 4.

  The container body 2 is a bottomed cylindrical hollow body (with an internal capacity of about 5 liters), and a cylindrical opening 22 is provided at one end of the storage part 21. The container body 2 is formed by injection molding high density polyethylene (manufactured by FCFC, trade name: TAISOX 8050) as in the first embodiment.

  As shown in FIG. 8 in an enlarged manner, the inner peripheral surface of the opening 22 in the container body 2 is a tapered surface 24 whose diameter increases toward the opening end.

  An annular rib 25 that goes around the outer peripheral surface is provided on the outer peripheral surface of the container body 2 with a certain margin from the opening end. By providing the annular rib 25, the shape retention of the opening 22 is improved, and the airtightness of the container 1 is improved. A plurality of ridges 26 are provided at predetermined positions between the opening end of the container body 2 and the annular rib 25, respectively, with a phase difference of 60 degrees and in parallel with the opening end. .

  The ridge 26 has a shape similar to a rectangular parallelepiped. Further, a taper portion 261 that tapers toward one end is provided on the lower surface (the surface on the side facing the annular rib 25) of the ridge 26 on one end (the end portion on the right side in the drawing). On the other end (left end portion in the figure) side, a stepped-down portion 262 is provided. In addition, this protruding item | line 26 is corresponded in the engaging part in a claim.

  The inner lid 3 is provided with a rib 36 (height 9 mm, thickness 3 mm) on the periphery of a disc-shaped inner lid main body portion (thickness 3 mm) 31, and is continuous with the base end of the rib 36. An annular tongue piece (height 10 mm, thickness 1 mm) 32 is provided. A continuous surface 37 formed by the outer peripheral surface of the tongue piece portion 32 and the outer peripheral surface of the rib 36 is a tapered surface that reduces the outer diameter of the tongue piece portion 32 toward the tip of the tongue piece portion 32. Yes. The taper rate of the continuous surface 37 is the same as the taper rate of the taper surface 24 provided on the inner peripheral surface of the opening 22 of the container body 2. As in the first embodiment, the inner lid 3 is formed by injection molding low density polyethylene (trade name: Sumitomo Chemical Co., Ltd., trade name Sumikasen GA701, flexural modulus 195 MPa).

  A flange portion (thickness 3 mm) 33 is provided at the tip of the rib 36 so as to project toward the outer peripheral surface side of the rib 36. In addition, a finger hook portion 38 extending toward the center of the inner lid main body portion 31 is provided at the tip of the rib 36. The finger-hanging portion 38 is a portion on which an operator's finger is hooked when the inner lid 3 fitted in the opening 22 of the container body 2 is removed from the opening 22. That is, the finger-hanging portion 38 is provided so that the inner lid 3 can be easily pulled out from the opening 22.

  The finger-hanging portion 38 is divided into three parts along the peripheral edge of the rib 36, and a vent groove 39 is formed at the tip of the rib 36 at the joint between the parts. It is provided along. Further, on the inner peripheral surface of the rib 36, a water passage concave groove 390 is provided along the height direction of the rib 36, continuously with the ventilation groove 39. The water passage groove 390 is provided to discharge the water retained in the finger hook 38 when the inner lid is washed with water. The role of the ventilation groove 39 will be described later.

  The inner lid 3 has a state in which the lower surface 34 side (the tip side of the tongue piece portion 32) faces the container body 2, and the outer peripheral surface of the tongue piece portion 32 and the outer peripheral surface of the rib 36 are continuous. The surface 37 is fitted into the opening 22 in a state where the surface 37 is in contact with the tapered surface 24 provided on the inner peripheral surface of the opening 22. At this time, since the continuous surface 37 and the tapered surface 24 are flat surfaces without irregularities, the continuous surface 37 and the tapered surface 24 are not rubbed excessively. Further, since the continuous surface 37 is a tapered surface that reduces the outer diameter of the tongue piece 32 toward the tip of the tongue piece 32, the continuous surface 37 is formed into the opening 22 very smoothly. Fitted. Therefore, when the inner lid 3 is fitted into the opening 22, almost no fine foreign matter is generated.

  When the inner lid 3 is fitted into the opening 22, the flange 33 is brought into contact with the opening end of the opening 22. Accordingly, the insertion depth (X) on the lower surface 34 side of the inner lid 3 with respect to the opening 22 and the protruding height (T) on the upper surface 35 side of the inner lid 3 protruding from the opening end of the opening 22. ) Is defined. In the present embodiment, the protruding height (T) is the same as the thickness of the flange portion 33.

  The outer lid 4 includes a peripheral wall 41 in which a second peripheral wall 412 having a smaller diameter than the first peripheral wall 411 is continuously provided on a cylindrical first peripheral wall 411, and a ceiling covering the upper end opening of the second peripheral wall 412. And plate 42. The top plate 42 is provided with two convex bases 421 protruding toward the upper surface at positions sandwiching the center of the top plate 42, and further, the handle portion 422 is formed by bridging the convex bases 421. Is provided. The convex base 421 is hollow and opens toward the lower surface side of the outer lid 4. The depth (H) of the peripheral wall 41 composed of the first peripheral wall 411 and the second peripheral wall 412 is set to 25 mm. Similar to the first embodiment, the outer lid 4 is formed by injection molding polypropylene (manufactured by FCFC, trade name: TAIRPRO K8009).

  As shown in an enlarged view in FIG. 9, a plurality of locking pieces 44 are provided on the inner peripheral surface of the first peripheral wall 411 with a phase difference of 60 degrees along the inner peripheral surface. The locking piece 44 includes a first ridge 441 arranged along an edge of the first peripheral wall 411, an inner peripheral surface of the first peripheral wall 411 from one end of the first ridge 441, and the It has an L-shape formed by second ridges 442 extending toward the corners formed by the edge of the second peripheral wall 412. Accordingly, a groove 45 that opens toward the other end of the locking piece 44 is formed in a portion surrounded by the locking piece 44 and the edge of the second peripheral wall 412. The groove 45 corresponds to the engaged portion in the claims.

  At the other end of the first ridge 441, an inclined piece 443 that extends the groove width toward the opening of the groove portion 45 is provided, and at the position facing the inclined side 443 in the groove portion 45, One locking projection 444 is provided. A bulging portion 446 that bulges slightly toward the inside of the groove portion 45 is provided at a contact point between the inclined piece 443 and the first protrusion 441.

  A second locking projection 445 is provided on the second ridge 442 side of the groove 45 at the corner formed by the inner peripheral surface of the first peripheral wall 411 and the edge of the second peripheral wall 412. Yes.

  Further, an angle formed by the inner peripheral surface of the first peripheral wall 411 and the edge of the second peripheral wall 412 is a portion of the inner peripheral surface of the first peripheral wall 411 where the locking piece 44 is not provided. In the section, a plurality of guide pieces 46 are provided at regular intervals.

  When the outer lid 4 is externally fitted to the opening 22 of the container body 2, first, the locking piece 44 provided on the outer lid 4 does not come into contact with the ridge 26 provided on the opening 22. Then, the opening 22 is covered with the outer lid 4. At this time, the upper surface of the ridge 26 contacts the guide piece 46.

  In this state, when the outer lid 4 is rotated clockwise, as shown in FIG. 10, the convex strip 26 has a taper portion 261 provided on one end side thereof and an inclined piece 443 provided in the groove portion 45. To be inserted into the groove 45. One end of the protrusion 26 inserted into the groove 45 is sandwiched between the first protrusion 441 and the second locking protrusion 445, and the other end is connected to the first protrusion 441 and the first protrusion 441. It is clamped by one locking projection 444. At this time, the outer lid 4 is fixed to the opening 22 of the container body 2 by the stepped portion 262 provided at the other end of the ridge 26 being locked to the bulging portion 446.

  That is, in this embodiment, the operation of fitting the outer lid 4 to the opening 22 of the container body 2 is performed by covering the opening 22 with the outer lid 4 and then moving the outer lid 4 to the timepiece. It can be carried out by inserting the ridge 26 into the groove 45 with slight rotation around. Therefore, the opening 22 of the container body 2 and the outer lid 4 are compared with the engaging means using the screwing of the screw that is externally fitted to the opening 22 by rotating the outer lid 4 several times. Opportunities for rubbing are greatly reduced. Thereby, the amount of foreign matter generated due to rubbing can be reduced.

  As shown in FIG. 7, the insertion margin (L) of the opening 22 with respect to the outer lid 4 is defined by the engagement position between the ridge 26 and the groove 45. In this embodiment, since the insertion allowance (L) is set to 20 mm, the insert allowance (L), the peripheral wall 41 depth (H) of the outer lid 4, and the opening end of the opening 22. The projecting height (T) of the inner lid 3 projecting from the upper surface 35 side has a relationship of H> L + T, so that the inner lid 3 is fitted into the opening 22 and the outer lid 4 is When the outer cover 4 is sheathed, the outer lid 4 and the inner lid 3 are not in contact with each other. Therefore, when the outer lid 4 is fitted into the opening 22, the outer lid 4 is not rubbed with the flange portion 33, and therefore the fineness caused by the rubbing between the outer lid 4 and the flange portion 33. No extraneous matter is generated.

  For example, when a conductive material such as silver paste or gold paste is accommodated in the container 1 and used for air transportation, the external pressure gradually decreases as the aircraft rises, and the air pressure outside the container 1 is reduced. The inside of the container 1 (inside the storage unit 21) is positive pressure.

  When the pressure inside the container 1 becomes positive with respect to the atmospheric pressure outside the container 1, the air inside the container 1 expands, and the tongue piece 32 is pushed and spread by the expanded air as shown in FIG. The opening 22 is in close contact with the inner peripheral surface. This prevents air and conductive material from leaking out of the container 1. Further, since air does not leak out, the internal pressure in the container 1 is hardly reduced compared to the internal pressure at the time of takeoff of the aircraft.

  At this time, the air existing in the space surrounded by the outer lid 4 and the inner lid 3 is quickly discharged out of the container 1 through the vent groove 39 provided in the inner lid 3. That is, the internal pressure in the space surrounded by the outer lid 4 and the inner lid 3 quickly becomes equal to the atmospheric pressure outside the container 1. Accordingly, an air pressure difference is quickly generated between the internal pressure in the storage portion 21 and the internal pressure in the space surrounded by the outer lid 4 and the inner lid 3, so that the tongue piece portion 32 is promptly provided in the opening portion. It adheres to the inner peripheral surface of 22.

  When a pressure difference occurs between the internal pressure in the storage portion 21 and the internal pressure in the space surrounded by the outer lid 4 and the inner lid 3, the inner lid 3 faces the top plate 42 of the outer lid 4. The tongue piece 32 is pushed up because the height (X) of the tongue piece 32 is longer than the gap formed between the flange 33 and the top plate 42. The inner lid 3 is supported at a position in contact with the top plate 42. Thus, the inner lid 3 does not come off from the opening 22.

  On the other hand, during the descent of the aircraft, the external air pressure gradually increases, and air passes into the space surrounded by the inner lid 3 and the outer lid 4 through the vent groove 39 provided in the inner lid 3. Flows in. That is, outside air is preferentially guided into the space surrounded by the inner lid 3 and the outer lid 4 through the vent groove 39, so that the inside of the storage portion 21 is completely said. Outside air does not flow in as much as possible. When air flows into the space surrounded by the inner lid 3 and the outer lid 4, the inner lid 3 is gradually pushed down into the container body 2.

  Therefore, until the aircraft is landed, the internal pressure in the container 1 is maintained at a positive pressure from the external air pressure, and fine foreign matters contained in the outside air are prevented from entering the container 1.

  As a result, the container 1 of the present invention is less likely to cause leakage of stored items or contamination of stored items even when exposed to changes in the external air pressure generated during air transportation.

  Since the rest is the same as that of the first embodiment, the description is omitted here to avoid repetition.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention can be suitably used as a container suitable for air transportation.

DESCRIPTION OF SYMBOLS 1 Container 2 Container main body 21 Storage part 22 Opening part 23 Male thread 24 Tapered surface 25 Circular rib 26 Projection 261 Tapered part 262 Stepped part 3 Middle lid 31 Middle lid main body part 32 Tongue piece part 33 Flange part 34 Lower surface 35 Upper surface 36 Rib 37 Continuous surface 38 Finger hook portion 39 Ventilation groove 390 Water passage groove 4 Outer cover 41 Peripheral wall 411 First peripheral wall 412 Second peripheral wall 42 Top plate 421 Protrusion 422 Handle part 43 Female screw 44 Locking piece 441 First ridge 442 Second ridge 443 Inclined piece 444 First locking projection 445 Second locking projection 446 Swelling portion 45 Groove portion 46 Guide piece

The container of the present invention is a container for storing a conductive material such as a silver paste or a gold paste, and is fitted into a container main body having a cylindrical opening and the opening. a middle cover for closing, is fitted in the opening, Ri name comprises a an outer lid covering a top surface of the inner lid, in said lid, tongue depending from the lower surface side of the inner lid Are formed in an annular shape along the periphery of the inner lid, the tongue piece is formed of a resin having a bending elastic modulus of 100 to 500 MPa , and the thickness of the tongue piece is 0 When the atmospheric pressure outside the container is reduced to a positive pressure with respect to the atmospheric pressure outside the container, the outer peripheral surface of the tongue piece is inside the opening. It is characterized by being in close contact with the peripheral surface.

The container of the present invention is a container for storing a conductive material such as a silver paste or a gold paste, and is fitted into a container main body having a cylindrical opening and the opening. An inner lid that is closed, and an outer lid that is externally fitted to the opening and covers the upper surface of the inner lid. The tongue includes a tongue piece portion that hangs down from the lower surface side of the inner lid. Is formed in an annular shape along the periphery of the inner lid, and the tongue piece is formed from a resin having a bending elastic modulus of 100 to 500 MPa measured according to ASTM D1822-61T. And when the thickness of the tongue piece portion is 0.1 to 2 mm, the air pressure outside the container decreases, and the tongue piece becomes positive when the pressure inside the container becomes positive with respect to the air pressure outside the container. The outer peripheral surface of the portion is in close contact with the inner peripheral surface of the opening.

The inner lid 3 includes a disc-shaped inner lid body portion (thickness 3 mm) 31 and an annular tongue piece portion (height 10 mm, thickness) which hangs down to the lower surface 34 side along the periphery of the inner lid body portion 31. A flange portion (thickness 3 mm) 33 that projects toward the outer peripheral surface of the tongue piece portion 32 is provided on the periphery of the inner lid main body portion 31. The inner lid 3 is formed by injection molding low density polyethylene (trade name: manufactured by Sumitomo Chemical Co., Ltd., trade name Sumikasen (registered trademark) GA701, flexural modulus 195 MPa). The flexural modulus is measured in accordance with ASTM D1822-61T (hereinafter the same).

The inner lid 3 is provided with a rib 36 (height 9 mm, thickness 3 mm) on the periphery of a disc-shaped inner lid main body portion (thickness 3 mm) 31, and is continuous with the base end of the rib 36. An annular tongue piece (height 10 mm, thickness 1 mm) 32 is provided. A continuous surface 37 formed by the outer peripheral surface of the tongue piece portion 32 and the outer peripheral surface of the rib 36 is a tapered surface that reduces the outer diameter of the tongue piece portion 32 toward the tip of the tongue piece portion 32. Yes. The taper rate of the continuous surface 37 is the same as the taper rate of the taper surface 24 provided on the inner peripheral surface of the opening 22 of the container body 2. As in the first embodiment, the inner lid 3 is formed by injection molding low density polyethylene (trade name: Sumitomo Chemical Co., Ltd., trade name Sumikasen (registered trademark) GA701, flexural modulus 195 MPa). is there.

Claims (6)

A container body having a cylindrical opening;
An inner lid that is fitted in the opening and closes the opening;
An outer lid that is externally fitted to the opening and covers the upper surface of the inner lid;
A container comprising:
In the inner lid, a tongue piece portion hanging from the lower surface side of the inner lid is provided in an annular shape along the periphery of the inner lid,
The tongue piece is formed from a resin having a flexural modulus of 100 to 500 MPa, and the thickness of the tongue piece is 0.1 to 2 mm.
The container, wherein the outer peripheral surface of the tongue piece is in close contact with the inner peripheral surface of the opening when the inside of the container is set to a positive pressure with respect to the atmospheric pressure outside the container. The container according to claim 1,
The inner lid is provided with a flange portion that comes into contact with the opening end of the opening when the inner lid is fitted into the opening.
The container in which the insertion depth on the lower surface side of the inner lid with respect to the opening and the protruding height on the upper surface side of the inner lid protruding from the opening end of the opening are defined by the flange portion. The container according to claim 2,
The opening is provided with an engaging portion on its outer peripheral surface,
The outer lid is provided with an engaged portion on the inner peripheral surface of the peripheral wall,
When the outer lid is fitted over the opening, the insertion portion of the opening with respect to the outer lid is defined by engaging the engaging portion and the engaged portion. Yes,
The insertion margin (L), the depth (H) of the peripheral wall of the outer lid, and the projecting height (T) on the upper surface side of the inner lid projecting from the opening end of the opening satisfy the relationship of H> L + T. By being
A container in which the outer lid and the inner lid are not in contact with each other when the inner lid is fitted into the opening and the outer lid is sheathed in the opening. The container according to any one of claims 1 to 3,
The outer peripheral surface of the tongue piece is a tapered surface that reduces the outer diameter toward the tip of the tongue piece,
The portion of the inner peripheral surface of the opening where the tongue piece is in close contact is a taper surface whose diameter increases toward the opening end at the same taper rate as the outer peripheral surface of the tongue piece. Made container. The container according to any one of claims 1 to 4,
The inner lid is provided with a cylindrical rib that rises from the upper surface side along its periphery,
The container in which the said tongue piece part is provided continuously with the base end of the said rib. The container according to any one of claims 1 to 4,
The inner lid is provided with a cylindrical rib that hangs from the lower surface side along its periphery,
The container in which the said tongue piece part is provided continuously with the front-end | tip of the said rib.

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