JP2009040435A - Inner lid of container, and lid of container having this inner lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner lid which enables a drying agent to be easily separated and collected after use and can be classified and disposed of. <P>SOLUTION: An inner lid 5 under a condition that the drying agent 4 is stored inside is internally fitted and mounted to an outer lid 3. After use, the inner peripheral flange 53 is torn along a weakened part 55 by gripping and pulling a tab piece 531 and is separated from the peripheral wall 51 of the inner lid. When the outer lid is inclined, the drying agent falls down. Under a condition of use, the undersurface peripheral edge part of the drying agent is supported by the inner peripheral flange so as not to make the drying agent fall down. A gas-permeable mesh member may be provided at a lower side opening part 512. As it is unnecessary to remove the inner lid itself, separating work of the drying agent is easily performed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an inner lid that is attached to an outer lid in a state where a desiccant is contained therein, and the atmosphere inside the container is closed by closing the mouth of the container with the outer lid in a state in which the inner lid is attached. The present invention relates to an inner lid for containing a desiccant, and a lid having the inner lid. In particular, the technology to make it possible to easily separate and dispose of the desiccant after use, or during use, the sealing function at the mouth of the container is secured to improve the air tightness of the container, while after use The present invention relates to a technique for easily separating and discarding as described above.

  Conventionally, in the case of storing a medicine or the like that dislikes moisture in a container, for example, a desiccant is accommodated in a lid for closing the mouth of the container so that the mouth can be opened and closed, and the moisture absorption function or humidity control function of the desiccant Thus, moisture prevention is performed to keep the atmosphere in the container in a predetermined state.

  In order to realize such moisture proof, there is known one in which a bottomed cylindrical inner lid is detachably mounted inside the outer lid, and a desiccant is accommodated inside the inner lid. In this case, the atmosphere in the container and the desiccant are brought into contact with each other through a vent hole penetrating the bottom plate portion of the inner lid, and the moisture contained in the atmosphere in the container is absorbed by the desiccant so as to prevent moisture. Yes.

  And when all the medicines stored in the container are consumed and discarded, it is necessary to remove the inner lid from the outer lid and take out the inner desiccant, in particular, in order to separate and discard the desiccant. is there. As a technique for facilitating the work of removing the inner lid at this time, for example, in Patent Document 1, a circular window hole is formed through the bottom plate portion of the inner lid, and a belt-like shape arranged like a bridge across the window hole. There has been proposed one in which a portion is integrally molded with an inner lid and molded with a synthetic resin. Further, for example, Patent Document 2 proposes that a bottom plate portion of a bottomed cylindrical inner lid is integrally formed with an operation portion that can be caused by a finger.

  Moreover, in what was proposed by these patent documents 1 or patent documents 2, it is constituted by what the flange protruded from the upper end edge to the outer peripheral side as an inner lid, and the outer lid is externally fitted to the mouth of the container and screwed. Thus, the flange is sandwiched between the inner and lower surfaces of the top wall of the outer lid and the front end surface of the mouth of the container so as to be closed (for example, FIG. 1 of Patent Document 1 or FIG. 4 of Patent Document 2). reference).

JP 2002-326656 A JP 2005-41526 A

  However, any of the above-described conventionally proposed techniques is a technique for removing the inner lid from the outer lid, and in order to realize this, a bridge-like belt shape for applying an operating force for removal to the inner lid. However, in reality, the desiccant cannot be easily taken out. In other words, when using the medicine in the container, it is necessary to open the outer lid and to screw the outer lid into the mouth of the container when the medicine has been taken out. The inner lid must be firmly attached to the outer lid because it must not fall off the lid. It is necessary to form the bridge-like belt-like portion and the raising operation portion so as to easily apply a corresponding operation force because it is firmly attached in this way.

  However, since the fitting of the inner lid to the outer lid is usually performed by means of fitting or press-fitting using the elasticity or ease of deformation of the synthetic resin material, the fitting of the inner lid to the inner lid can be strengthened. Reducing the operating force for removing the is a conflicting requirement, and it is extremely difficult to satisfy both. For this reason, with the proposed technique, it is not possible to disseminate the separation and recovery of the desiccant and the separation and disposal when the container is in a used stage as a practical reality.

In addition, in the one disclosed in Patent Document 1, a part of the bottom wall of the storage tray is used as a cut-out portion, and a state where the cut-out portion is completely opened as a separation line for enabling the cut-out to be separated is used. However, this may cause the desiccant to fall off. That is, when a shock is applied by dropping or the like in a process after the storage tray is assembled to the cap in a state where the desiccant is accommodated (for example, a transport stage in a parts feeder or a transport stage), the desiccant contained inside It may break at the separation line by its own weight, which may cause the desiccant to fall off.

  Furthermore, the above-mentioned conventionally proposed lid may not have a sufficient sealing function of keeping the inside of the container airtight by blocking between the inside and outside of the container. That is, as shown in FIG. 25, in addition to the leakage path a through the boundary between the front end surface of the mouth portion 102 of the container 101 and the lower surface of the flange 103, which is a sealing target for ensuring the sealing function, The existence of a leakage path b through the air hole 105 of the inner lid 104, the internal accommodation space 106, and the boundary between the upper surface of the flange 103 and the inner and lower surfaces of the outer lid 107 is also considered, and the sealing function is impaired by this leakage path b. There is a fear. Further, the outer lid 107 is externally fitted to the mouth portion 102 of the container 101 and screwed together so that the flange of the inner lid 104 is interposed between the inner lower surface of the outer lid 107 and the front end surface of the mouth portion 102 of the container 101. Even if the upper and lower surfaces of 103 are sandwiched, since the sealing function is exhibited based on the contact between the surfaces, the sealing function is likely to be impaired due to local sag, inclination, or displacement. There is also. As a result, the airtightness of the container 101 is likely to be impaired.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an inner lid that can easily realize separation and recovery of the desiccant and separation and disposal at the time of disposal after use. There is to do. In addition to the ease of separation and recovery and separation and disposal, the container lid consisting of an inner lid and an outer lid for containing a desiccant, etc., is sufficiently secured. It is another object of the present invention to improve the airtightness of the container.

  In order to achieve the above object, in the invention relating to the inner lid of the container, a peripheral wall that opens in the vertical direction and has an interior serving as a desiccant containing space, and projects from the lower end edge of the peripheral wall inward in the radial direction. An inner peripheral flange that supports the desiccant so as not to fall off, and the inner peripheral flange is formed integrally with the peripheral wall via a linear weakened portion weakened to such an extent that it can be shredded. The weakened portion is formed over the entire circumference along the boundary position between the peripheral wall and the inner peripheral flange (Claim 1).

  In the case of this invention, if the mouth of the container is closed in a state where the desiccant is accommodated in the accommodating space in the peripheral wall of the inner lid, the opening defined by the inner peripheral edge of the inner peripheral flange serving as the lower opening of the peripheral wall Through this, the desiccant comes into contact with the atmosphere in the container, whereby the inside of the container is maintained in a predetermined dry state. And when it is used up, if the inner peripheral flange is shredded along the weakened portion, the lower end side of the peripheral wall is expanded to an opening equivalent to the accommodation space, so that it can be separated and recovered by dropping the desiccant to the outside It will be. At this time, it is not necessary to remove the inner lid itself from the outer lid for separating and collecting the desiccant, and it is only necessary to tear off the inner peripheral flange, so that the desiccant can be easily discarded.

  In the above-mentioned invention, further action can be obtained by making the specific matters more concrete or adding further specific matters as follows. That is, as the inner peripheral flange in the present invention, a knob piece is provided in a part of the circumferential direction, and by pulling the knob piece, the inner peripheral flange is torn along the weakened portion with the knob piece as a starting end. (Claim 2). In this way, when used, the inner peripheral flange is torn off with the knob piece as the starting end simply by grasping and pulling the knob piece. Thereby, as a result of further facilitating the work of tearing off the inner peripheral flange, the feasibility of separating and discarding the desiccant can be further enhanced.

  The said invention WHEREIN: The reinforcement member which connects and reinforces the inner peripheral edges of the said inner peripheral flange can be further provided (Claim 3). By doing in this way, the inner peripheral edge used as the free end edge of an inner peripheral flange is connected by a reinforcement member, rigidity is improved, and the support function of a desiccant can also be ensured.

  In addition, a breathable mesh member joined so as to cover the opening on the inner peripheral edge side of the inner peripheral flange can be further provided. By doing so, even if the object to be dried in the container is in the form of powder or the like, it is partitioned by the mesh member, so that it can be prevented from entering the accommodation space side in the peripheral wall.

  Further, the weakened portion in the present invention can be constituted by a minute groove having a small width that opens to the inner surface side of the housing space. By doing in this way, the force which pulls an inner peripheral flange from the outer side will act immediately from the opening side of the said groove as a shearing force. For this reason, an opportunity to break the weakened portion is given, and this makes it possible to reliably tear the inner peripheral flange at the weakened portion. Even if the above mesh member is provided on the inner surface side of the inner peripheral flange by welding or bonding, the mesh member covers the opening side, and when the inner peripheral flange is torn off As a result, the inner flange can be reliably torn off.

  On the other hand, in the invention relating to the lid of the container, from the inner lid of the container according to any one of the above claims 1 to 5 and the outer lid having a top wall and a peripheral wall and screwed into the mouth of the container The inner lid protrudes from the upper end opening edge of the peripheral wall to the outer circumference in the radial direction and is sandwiched between the inner lower surface of the outer lid and the tip of the mouth of the container in the closed state. The outer peripheral flange is formed integrally. The outer peripheral flange is elastically deformed by receiving upward pressure from the tip of the mouth of the container on the lower surface side in the closed state, and an inner peripheral position of the outer peripheral flange main body. An annular protrusion on the inner peripheral side that protrudes upward from the outer peripheral side, and an annular convex part on the outer peripheral side that protrudes upward from the outer peripheral side position of the outer peripheral flange main body part. In addition, at least the annular convex portion on the inner peripheral side has a protruding cross-sectional shape in which the protruding end can be brought into line contact with the inner lower surface of the outer lid and is formed in an endless state over the entire circumference ( Claim 6).

  In the case of the invention relating to the lid of the container, the outer peripheral flange main body portion is elastically deformed by receiving pressure from the tip of the container mouth from the lower surface side in the closed state, and its elastic restoring force is the tip of the mouth of the container, It will be in the state which acted between the inner and lower surfaces of an outer lid. By this elastic restoring force, the annular convex portion on the inner peripheral side and the annular convex portion on the outer peripheral side are pressed upward against the inner lower surface of the outer lid, and at the same time, the lower surface of the outer peripheral flange body portion is brought to the tip of the mouth of the container. It will be pressed downward. As a result, both the leakage path through the boundary between the outer peripheral flange and the mouth of the container and the leakage path through the boundary between the outer peripheral flange and the outer lid are securely blocked, The sealing function can be secured and the air tightness of the container can be improved. In addition, since the annular convex portion pressed on the basis of the elastic restoring force is in contact from line contact to contact, it enhances the blocking performance of the leakage path compared to the contact between the surfaces and ensures the sealing function. It can be made more certain. In addition, as described above, the protruding end of the annular convex portion has a projecting cross-sectional shape that can come into line contact with the inner and lower surfaces of the outer lid, so that the inner lid is mounted in a state of being misaligned with respect to the outer lid. Even when tightening at the time of closing operation, the protruding end of the annular convex portion becomes easy to slip along the inner and lower surfaces of the outer lid, and the inner lid receives the rotational operation force in the circumferential direction at the time of tightening. As a result of causing the relative displacement in the circumferential direction, the inner lid is automatically rearranged so as to have a concentric (coaxial) arrangement by correcting the misalignment with respect to the outer lid. And by exhibiting such a centering function, the inner lid is securely attached to the outer lid at a concentric position, and as a result, the security of the sealing function is further ensured. You can get none.

  Further, in another invention relating to a container lid, the container inner lid according to any one of claims 1 to 5 and an outer lid having a top wall and a peripheral wall and screwed into the mouth of the container The inner lid protrudes from the upper end opening edge of the peripheral wall to the outer circumference in the radial direction and is sandwiched between the inner lower surface of the outer lid and the tip of the mouth of the container in the closed state. The outer peripheral flange is formed integrally. On the other hand, it is disposed between the outer peripheral flange and the inner and lower surfaces of the outer lid, and is sandwiched between the inner and lower surfaces of the outer lid and the mouth end of the container together with the outer peripheral flange in the closed state. A sheet-like packing is further provided to constitute a container lid. And, as the outer peripheral flange, an outer peripheral flange body part that is elastically deformed by receiving upward pressing from the tip of the mouth of the container on the lower surface side in the closed state, and an inner peripheral side position of the outer peripheral flange body part An annular protrusion on the inner peripheral side that protrudes upward from the outer peripheral side, and an annular convex part on the outer peripheral side that protrudes upward from the outer peripheral side position of the outer peripheral flange main body part. In addition, at least the annular convex portion on the inner peripheral side has a protruding cross-sectional shape whose protruding end can be in line contact with the lower surface of the sheet-like packing and is formed in an endless state over the entire circumference ( Claim 7).

  In the case of the invention relating to the lid of the container, the outer peripheral flange main body portion is elastically deformed by receiving pressure from the tip of the container mouth from the lower surface side in the closed state, and its elastic restoring force is the tip of the mouth of the container, It will be in the state which acted between the lower surfaces of the sheet-like packing. By this elastic restoring force, the annular protrusion on the inner peripheral side and the annular convex part on the outer peripheral side are pressed upward against the lower surface of the sheet-like packing, and at the same time, the lower surface of the outer peripheral flange main body portion is brought into contact with the tip of the mouth of the container. It will be pressed downward. As a result, both the leakage path through the boundary between the outer peripheral flange and the container mouth and the leakage path through the boundary between the outer peripheral flange and the sheet-like packing are securely cut off between the container and the lid. The sealing function can be secured, and the airtightness of the container can be improved. In addition, since the annular convex portion pressed on the basis of the elastic restoring force is in contact from line contact to contact, it enhances the blocking performance of the leakage path compared to the contact between the surfaces and ensures the sealing function. It can be made more certain. Further, as in the case of the invention of claim 6, since the projecting end of the annular convex portion has a projecting cross-sectional shape capable of making line contact with the lower surface of the sheet-like packing, the inner lid is opposed to the outer lid. Even if it is mounted in an off-centered state, the protruding end of the ring-shaped convex part becomes easy to slide along the sheet-like packing during tightening during the closing operation, and the rotational operation force in the circumferential direction during tightening As a result, the inner lid causes relative displacement in the circumferential direction. As a result, the inner lid is automatically rearranged so as to be concentric (coaxial) with respect to the outer lid by correcting the misalignment. And by exhibiting such a centering function, the inner lid is securely attached to the outer lid at a concentric position, and as a result, the security of the sealing function is further ensured. You can get none.

  The sheet-like packing according to the seventh aspect of the present invention can be formed of a soft synthetic resin to such an extent that the protruding end of the annular protrusion on the inner peripheral side bites in the closed state (claim 8). By doing in this way, in the plugged state, it can be brought into close contact with the state in which the annular convex portion on the inner peripheral side bites into the lower surface of the sheet-like packing over the entire circumference by receiving the elastic restoring force of the outer peripheral flange body portion. As a result, the sealing function can be made more perfect by further ensuring the leakage of the leakage path through the boundary between the outer peripheral flange and the sheet-like packing.

  Further, in the container lid described above, as the protruding end of the inner circumferential annular convex portion, in the state before the mouth of the container comes into contact with the outer peripheral flange main body, it is more than the protruding end of the outer circumferential annular convex portion. It can also be set to be positioned higher (claim 9). By doing in this way, when receiving the elastic restoring force from the outer peripheral flange main body in the closed state, the inner peripheral side annular convex part is pressed more strongly than the outer peripheral side annular convex part, Compared with the case where the inner and outer peripheral annular projections are equally applied, the degree of adhesion is increased, the leakage path blocking performance is further increased, and the sealing function can be further enhanced.

  As described above, according to the inner lid of the container of any one of claims 1 to 5, the mouth of the container is in a state in which the desiccant is accommodated in the accommodating space in the peripheral wall of the inner lid when in use. If the portion is closed, the desiccant can be supported by the inner peripheral flange so as not to fall into the container, while the desiccant and the container inside the container are passed through the opening at the lower end of the peripheral wall defined by the inner peripheral edge of the inner peripheral flange. The inside of the container can be maintained in a predetermined dry state by contacting with the atmosphere. And at the time of use, if the inner peripheral flange is torn along the weakened part, the lower end side of the peripheral wall can be expanded to an opening equivalent to the accommodation space, and the desiccant can be separated and recovered Become. At this time, since it is not necessary to remove the inner lid itself from the outer lid for separating and collecting the desiccant, it becomes possible to easily realize the disposal and disposal of the desiccant.

In particular, according to the second aspect, when used, the inner peripheral flange can be pulled off from the peripheral wall with the knob piece as a starting end by simply grasping and pulling the knob piece. Thereby, as a result of further facilitating the work of tearing off the inner peripheral flange, the feasibility of separating and discarding the desiccant can be further enhanced.

  According to the third aspect, the inner peripheral edge serving as the free end edge of the inner peripheral flange can be connected by the reinforcing member to increase the rigidity, and the support function of the desiccant can be ensured.

  According to the fourth aspect, since the opening on the inner peripheral edge side of the inner peripheral flange is covered with the mesh member having air permeability, the drying object stored in the container is in the form of powder or the like. Even if it exists, it can suppress entering into the accommodation space side in a surrounding wall.

  According to the fifth aspect, the force for pulling the inner peripheral flange from the outside can be immediately applied as the shearing force from the opening side of the concave groove, and the trigger for breaking the weakened portion can be given. As a result, the inner peripheral flange can be reliably torn off at the weakened portion. In particular, even when the mesh member is provided on the inner surface side of the inner peripheral flange by welding or bonding, the resistance when the inner peripheral flange is torn off is made as small as possible to reduce the inner peripheral flange. Can be surely broken.

  On the other hand, according to the lid of the container of claim 6 or 9, the elastic restoring force is applied between the tip of the mouth of the container and the inner and lower surfaces of the outer lid by the outer peripheral flange main body in the closed state. By this elastic restoring force, the inner peripheral annular convex portion and the outer peripheral annular convex portion are pressed upward against the inner lower surface of the outer lid, and at the same time, the lower surface of the outer peripheral flange body portion is It can be pressed downward against the tip of the mouth. As a result, both the leakage path through the boundary between the outer peripheral flange and the mouth of the container and the leakage path through the boundary between the outer peripheral flange and the outer lid can be reliably blocked. The sealing function between the container and the lid can be ensured, and the airtightness of the container can be improved. In addition, the ring-shaped convex portion pressed on the basis of the elastic restoring force can be brought into close contact with the line contact, and the blocking of the leakage path is enhanced compared to the contact between the surfaces, The security of the sealing function can be further ensured. In addition, since the projecting end of the annular convex portion has a projecting cross-sectional shape that can be in line contact with the inner lower surface of the outer lid, even if the inner lid is mounted in a state of being misaligned with respect to the outer lid, When tightening at the time of closing operation, the protruding end of the annular convex part becomes easy to slide along the inner and lower surfaces of the outer lid, and the inner lid is relative to the circumferential direction by receiving the rotational operation force in the circumferential direction at the time of tightening. As a result of causing the displacement, it is possible to exert a centering function such that the inner lid is automatically rearranged so as to be concentric (coaxial) by correcting the misalignment with respect to the outer lid. As a result, the inner lid is securely attached to the outer lid at the concentric position, and as a result, the security of the sealing function can be further ensured.

  According to the container lid of any one of claims 7 to 9, an elastic restoring force acts between the tip of the container mouth and the lower surface of the sheet-like packing by the outer peripheral flange main body in the closed state. With this elastic restoring force, the inner peripheral annular convex portion and the outer peripheral annular convex portion are pressed upward against the lower surface of the sheet-like packing, and at the same time, the lower surface of the outer peripheral flange body portion Can be pressed downward against the tip of the mouth of the container. As a result, both the leakage path through the boundary between the outer peripheral flange and the mouth of the container and the leakage path through the boundary between the outer peripheral flange and the sheet-like packing can be reliably blocked. The sealing function between the container and the lid can be ensured, and the hermeticity of the container can be improved. In addition, the ring-shaped convex portion pressed on the basis of the elastic restoring force can be brought into close contact with the line contact, and the blocking of the leakage path is enhanced compared to the contact between the surfaces, The security of the sealing function can be further ensured. In addition, since the protruding end of the annular convex part has a protruding cross-sectional shape that allows line contact with the lower surface of the sheet-like packing outer lid, it is assumed that the inner lid was mounted in a state of being misaligned with respect to the outer lid However, the projecting end of the ring-shaped convex part becomes easy to slide along the sheet-like packing during tightening during the closing operation, and the inner lid is relatively moved in the circumferential direction due to the rotational operation force in the circumferential direction during tightening. As a result of causing the displacement, it is possible to exert a centering function such that the inner lid is automatically rearranged so as to be concentric (coaxial) by correcting the misalignment with respect to the outer lid. As a result, the inner lid is securely attached to the outer lid at the concentric position, and as a result, the security of the sealing function can be further ensured.

  In particular, according to the eighth aspect of the invention, in the closed state, the annular convex portion on the inner peripheral side is brought into close contact with the lower surface of the sheet-like packing over the entire circumference by receiving the elastic restoring force of the outer peripheral flange body portion. be able to. Thereby, the interruption | blocking property of the leakage path through the boundary between an outer peripheral flange and a sheet-like packing can be made more reliable, and a sealing function can be made more perfect.

  According to the ninth aspect of the present invention, when the elastic restoring force is received from the outer peripheral flange main body in the closed state, the inner peripheral annular convex portion can be pressed more strongly than the outer peripheral annular convex portion. The degree of adhesion can be increased as compared with the case where the ring-shaped convex portions on both sides are equally applied. Thereby, the interruption | blocking performance of a leak path | route can be improved more, and a sealing function can be improved further.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 shows an example in which the inner lid according to the first embodiment of the present invention is applied. Reference numeral 2 denotes a container, 3 denotes an outer lid for opening or closing the mouth portion 21 of the container 2, and 4 denotes a flat shape. A desiccant (for example, silica gel) 5 formed in a cylindrical shape is an inner lid for accommodating the desiccant 4 (see also FIG. 2) and mounting it on the outer lid 3. FIG. 1 shows a normal use state in which the outer lid 3 is screwed into the mouth portion 21 of the container 2 to be in a closed state and the moisture-proof function by the desiccant 4 is exhibited. In the above-described closed state, the inner lid is positioned in a state of entering the radially inner side of the mouth portion 21.

  The container 2 is configured as a bottomed cylindrical container having a central axis X of the mouth portion 21 as a cylindrical axis by a synthetic resin bottle or a glass bottle, for example, an oral drug such as a capsule, a tablet, or a granule Or, it is used to contain foods that dislike moisture, such as powdered and granular dietary supplements. A screw portion 211 for closing the outer lid 3 is formed on the outer peripheral surface of the mouth portion 21. Note that the shape of the container to which the present invention is applied is not particularly limited, and the cylindrical mouth portion 21 that is closed by the outer lid 3 even if the main body portion is cylindrical or rectangular. What is necessary is just to have. In the following description, the direction in which the central axis X extends will be referred to as the up-down direction, the upper part of FIG. 1 will be described as “upper”, and the lower part of FIG.

  The outer lid 3 is formed by integrally forming a peripheral wall 31 whose lower end is opened and a top wall 32 covering the upper end side of the peripheral wall 31 by synthetic resin molding. A screw portion 311 that fits into the screw portion 211 of the mouth portion 21 is integrally formed. Further, an engaging portion 312 for attaching and holding the inner lid 5 is formed at the innermost portion of the peripheral wall 31 near the top wall 32. This engaging part 312 is comprised by the convex line | wire of convex shape, such as a triangle shape, for example. The means for closing the outer lid 3 and the mouth portion 21 is engaged with the concave and convex portions by, for example, pushing the outer lid over the mouth portion in addition to the fastening means by the screw portions 211 and 311. Other means such as an engaging means may be used, and the present invention can be applied to these means (the same applies to the following embodiments).

  As shown in FIGS. 3 and 4, the inner lid 5 includes a peripheral wall 51 whose upper and lower sides are opened by an upper opening 511 and a lower opening 512, and an upper end opening edge of the peripheral wall 51 toward the outer peripheral side. An outer peripheral flange 52 protruding over the entire periphery and an inner peripheral flange 53 protruding from the lower end edge of the peripheral wall 51 toward the inner peripheral side are integrally formed by synthetic resin molding. A space on the inner peripheral side of the peripheral wall 51 is an accommodating space 54 for the desiccant 4. That is, the size of the peripheral wall 51 (particularly the inner diameter and the vertical dimension) is set according to the size (outer diameter and height) of the desiccant 4.

  In the closed state, the outer peripheral flange 52 performs a sealing function by being sandwiched between the top wall 32 of the outer lid 3 and the tip of the mouth portion 21 of the container 2, and at the same time, a plurality of outer peripheral flanges 52 project outward from the periphery. The engagement pieces 522, 522,... Serve to attach to the outer lid 3. Each engagement piece 522 protrudes in a tongue shape from a position at a predetermined interval in the circumferential direction of the outer peripheral flange 52, and is formed so as to be gradually thinned toward the distal end side so as to be easily bent. Each engagement piece 522 gets over the above-described engagement portion 312 of the outer lid 3 from the lower side to the upper side (from the lower end opening toward the top wall 32 side), and is brought into an engaged state. On the other hand, it is held in a mounted state.

  The inner peripheral flange 53 has a role of supporting the desiccant 4 from below so that the desiccant 4 (see FIG. 1) accommodated in the accommodating space 54 does not fall downward (inside the container 2). Sometimes it plays the role of separating from the peripheral wall 51 and separating the desiccant 4 (the role of a torn strip to be described later). In achieving the supporting role, the radial width of the inner peripheral flange 53 is such that the inner diameter of the lower opening formed by the inner peripheral edge of the inner peripheral flange 53 is at least larger than the outer diameter of the desiccant 4. It may be extremely narrow so as to be small. In short, the inner peripheral flange 53 only needs to have a width that slightly protrudes (projects) inward in the radial direction from the lower end peripheral position of the peripheral wall 51. In order to achieve the above-described separation role, the weakened portion 55 is formed over the entire circumference at the boundary position between the outermost peripheral portion of the inner peripheral flange 53 and the lower end portion of the peripheral wall 51, while the inner peripheral portion A knob 531 is formed so as to protrude from a part of the flange 53 toward the lower opening 512.

  As shown in FIGS. 4 to 6, the weakening portion 55 is formed over the entire circumference following the induction weakening portion 551 that obliquely crosses the inner peripheral flange 53 in order to cut the knob 531, and the induction weakening portion 551. And a circumferential weakening portion 552. These weakened portions 55 are formed with a narrow groove having a substantially V-shaped cross section from the outer surface side as shown in FIG. In particular, the circumferential weakened portion 552 is formed endlessly along the position radially inward from the outer peripheral surface of the peripheral wall 51, and is torn along the weakened portion 55 as described later. The lower opening 512 is enlarged to a size substantially equal to the inner diameter of the peripheral wall 51. In short, if the knob piece 531 is the starting end, a strip-like stripped piece with the tip end 532 defined by the induction weakening portion 552 intersecting the circumferential weakening portion 551 at an acute angle is used as the inner lid 5. It can also be said that the inner peripheral flange 53 that supports the desiccant 4 so as not to fall off is formed integrally with the peripheral wall 51 via the weakened portion 55 when in the state. Note that the entire knob 531 protrudes toward the lower opening 512, but the present invention is not limited thereto, and a part of the knob 531 only needs to protrude toward the lower opening 512. This is because, if only the part that triggers from outside is projected, it can play the role of picking.

  The inner lid 5 may be formed by synthetic resin molding from the viewpoint of hermeticity of the container 2 and ease of shredding of the weakened portion 55. For example, PE-LD (low density polyethylene), PE-LLD (linear) Low-density polyethylene), PE-MD (medium density polyethylene) and other olefin-based materials can be used alone, or PE-HD (high-density polyethylene), EVA (ethylene-vinyl) for any of these materials What is necessary is just to use what blended an alcohol copolymer resin) or an elastomer.

  When the desiccant 4 is put into the accommodation space 54 from the upper opening 511 and the desiccant 4 is accommodated inside the inner lid 5, the inner lid 5 is pushed inward from the lower end opening of the outer lid 3. Are engaged with the engagement portion 312 and the outer peripheral flange 52 is held against the inner surface of the top wall 32, thereby being attached (see FIG. 1). When the outer lid 3 in this state is screwed into the mouth portion 21 of the container 2, the tip of the mouth portion 21 abuts against the outer peripheral flange 52 of the inner lid 5, so that the outer peripheral flange 52 is made to the inner surface of the top wall 32 of the outer lid 3. The fastening is finished with the state pressed against. As a result, the container 2 is in a closed state, and the desiccant 4 is in a state of facing the inside of the container 2 through the lower opening 512. Thereby, the desiccant 4 contacts with the atmosphere in the container 2, and the atmosphere in the container 2 is maintained in a moisture-proof or humidity-controlled state.

  When the filling (for example, medicine) in the container 2 is consumed and used up, the outer lid 3 is removed from the mouth 21 of the container 2, and the tab 531 is replaced with, for example, a thumb and an index finger as illustrated in FIG. By picking it up and pulling it to the front, the picked piece 531 is cut off from the induction weakening portion 551 (see FIG. 8A). Further, when the knob 531 is pulled forward, the inner peripheral flange 53 is pulled along the circumferential weakened portion 552 (see FIG. 8B), and finally the entire inner peripheral flange 53 is pulled from the inner lid 5. The bottom end side of the inner lid 5 is opened by the size of the circumferential weakening portion 552 and the entire desiccant 4 is exposed to the outside. Thus, if the entire outer lid 3 is tilted so that the lower end side of the inner lid 5 is directed downward, the desiccant 4 falls due to gravity drop, so that the desiccant 4 is taken out from the accommodation space 54 of the inner lid 5 to the outside. be able to.

  In the case of the inner lid 5 described above, it is attached to the outer lid 3 in a state of normal use, that is, with the desiccant 4 contained therein, and the mouth 21 of the container 2 is closed with the outer lid 3 fitted with the inner lid 5. In this state, the inner peripheral flange 53 serves as a stopper to reliably support the desiccant 4 so that the desiccant 4 does not fall out of the inner lid 5, while the desiccant 4 and the inside of the container 2 pass through the lower opening 512. The atmosphere in the container 2 can be maintained in a predetermined dry state while maintaining good contact with the atmosphere. When the container 2 is used because all the medicine in the container 2 is consumed, the entire inner peripheral flange 53 can be shredded along the weakened portion 55 by picking and pulling the knob 531. Thus, the lower end side of the peripheral wall 51 can be opened in a fully open state. Thereby, it is possible to separate and collect the desiccant 4 very easily by dropping the desiccant 4 by simply tilting the outer lid 3 and taking it out, and the desiccant 4 can be separated and discarded. In this case, as an operation for separating and recovering the desiccant 4, it is only necessary to tear the inner peripheral flange 53 along the weakened portion 55, and there is no need to remove the inner lid 5 from the outer lid 3. Sorting and discarding of the desiccant 4 can be realized only by an easy operation. Further, since there is no need to remove the inner lid 5, there is no need to consider workability when removing the inner lid or to adopt a detachable mounting means as in the prior art. It is also possible to employ a mounting means that sufficiently satisfies the demand for strong mounting.

Second Embodiment
Hereinafter, with respect to each embodiment other than the first embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and redundant description will be omitted, and different points will be described below. Inner lids 5a, 5b, and 5c of the following embodiments are also mounted on the outer lid 3 (see FIG. 1) in a state in which the desiccant 4 is accommodated in the accommodating space 54 in the peripheral wall 51. The point that the internal desiccant 4 is separated and discarded by pulling along the weakened portion 55 by pulling the knob 531 when used is closed. It is the same as the inner lid 5 of the embodiment.

  As the inner lid 5 a of the second embodiment, for example, as shown in FIG. 10, a mesh member 56 is added as a component, and the lower opening 512 of the inner lid 5 is covered with the mesh member 56. It is. The mesh member 56 may be made of any material as long as it has air permeability. For example, a synthetic resin net material or a synthetic resin nonwoven fabric may be used. As a nonwoven fabric, what was formed in the ultra-thin sheet | seat shape which has air permeability, for example by applying high heat to the continuous ultra-fine polyethylene fiber and bonding is mentioned. Such a mesh member 56 may be joined to the inner peripheral flange 53 by, for example, forming a welding line over the entire circumference as indicated by reference numeral 561 in FIG. For welding at that time, means such as ultrasonic welding or heat welding can be adopted. In addition to the welding, the mesh member 56 may be integrally formed with the inner lid 5 by insert molding. In the embodiment of FIG. 10, when the object to be stored in the container 2 is, for example, a granular or powdery medicine or food, the container 2 is tilted or tilted so that the medicine or the like is removed from the desiccant 4. It can prevent entering into the accommodation space side. If the object to be stored in the container 2 is a tablet or a capsule, the lower opening 512 is preferably left open.

  And in the case of this 2nd Embodiment, even if the object of drying and humidity control in the container 2 is a thing of a form, such as a granular form, the inside of the container 2 and the accommodation space 54 of the desiccant 4 by the mesh member 56 are used. Are partitioned and partitioned from each other, it is possible to prevent the above-mentioned object of drying / humidity from entering the accommodation space 54 side in the peripheral wall 51. Even if the mesh member 56 is integrally formed with the inner peripheral flange 53 with respect to the inner surface (the surface on the accommodation space 54 side) of the inner peripheral flange 53 by insert molding, the weakened portion 55 has the inner peripheral flange 53. Since the outer circumferential edge of the mesh member 56 exists up to a position covering the concave groove, the coupling is weakened, and by the shredding at the weakened portion 55 position. The inner peripheral flange 53 can be cut and separated without any trouble.

<Third Embodiment>
Examples of the inner lid 5b according to the third embodiment include those shown in FIGS. The examples illustrated in FIGS. 11 and 12 are such that the inner peripheral edges of the inner peripheral flange 53 in FIGS. 2 to 4 and the like are integrally connected by a crosspiece member extending in a radial direction or a crossing member extending in a direction crossing each other. Equivalent to. In short, it corresponds to a structure in which the inner peripheral edges serving as the free end edges of the inner peripheral flange 53 are connected to each other by a reinforcing member to increase the strength, and the above-mentioned cross member or cross member, or the following as a specific example The cross member 53b constitutes a reinforcing member. From this point of view, the mesh member 56 as shown in FIG. 10 also serves as the above-described reinforcing member.

  That is, in the third embodiment, on the lower end side of the peripheral wall 51, an inner peripheral flange 53a partially formed with a knob 531 and an inner peripheral side position of the inner peripheral flange 53a extend in the radial direction and the peripheral direction, respectively. The bottom wall 57 is integrally formed with a frame-shaped cross member 53b that crosses each other and connects the inner peripheral edges of the inner peripheral flange 53a. The outer periphery of the bottom wall 57 is integrally connected to the peripheral edge on the lower end side of the peripheral wall 51 via the weakened portion 55. The knob portion 531 has a separation hole 571 extending along the periphery thereof except for the extended piece 533 defined by the induction weakening portion 551 and the auxiliary weakening portion 553 formed in an auxiliary manner (see also FIG. 13). Separated from others. Further, the crossing member 53b is also opened with through-holes 572, 572,..., Which are divided by the skeleton portion, and these through-holes 572 constitute the lower opening of the peripheral wall 51. .

  11 and 12, the mesh member 56 having the same air permeability as the inner lid 5a (see FIG. 10) of the second embodiment is also passed through the inner lid 5b of the third embodiment. The holes 572, 572,..., Or in addition thereto, may be joined so as to cover the separation holes 571 and the like.

<Fourth embodiment>
The inner lid 5c of the fourth embodiment has improved airtightness (sealability) during use, and has improved airtightness by combining the inner lid 5c and the sheet packing 6 as shown in FIG. It is. In the fourth embodiment, the outer lid 3, the inner lid 5c, and the sheet packing 6 constitute a container lid.

  On the inner peripheral surface of the peripheral wall 31 of the outer lid 3, a screw portion 311 that fits into the screw portion 211 of the mouth portion 21 of the container 2 is integrally formed, and the screw portion 211, 311 maintains the plugged state. Fastening means are configured. In addition, an engaging portion for mounting and holding an outer peripheral flange 58 (described in detail below, a locking piece 584 of the outer peripheral flange 58) of the inner lid 5c at the position of the innermost portion near the top wall 32 of the peripheral wall 31. 312 is formed. This engaging part 312 is comprised by the convex line | wire of convex shape, such as a triangle shape, for example.

  As shown in FIGS. 15 and 16, an outer peripheral flange 58 that protrudes from the upper end opening edge of the peripheral wall 51 to the outer peripheral side is formed integrally with the inner lid 5 c by synthetic resin molding. The outer peripheral flange 58 is sandwiched between the lower surface of the sheet-like packing 6 disposed on the lower side of the top wall 32 of the outer lid 3 and the tip 212 (see FIG. 17) of the mouth portion 21 of the container 2 in the closed state. As a result, the sealing function is achieved and the mounting function for the outer lid 3 is also achieved. That is, the outer peripheral flange 58 includes an outer peripheral flange main body 581 projecting a predetermined length from the position below the opening end surface 513 constituting the upper opening 511 of the peripheral wall 51 to the outer peripheral side by a predetermined length, and the outer periphery. An annular protrusion 582 on the inner peripheral side that protrudes upward from the inner peripheral side position of the flange main body part 581, an annular convex part 583 on the outer peripheral side that protrudes upward from the outer peripheral side position of the outer peripheral flange body part 581, and an outer peripheral flange body A plurality of engaging pieces 584, 584,... Projecting from the outer peripheral end surface of the portion 581 to the outer peripheral side.

  The outer peripheral flange main body 581 has a length (radial interval) between the two annular convex portions 582 and 583 on the inner peripheral side and the outer peripheral side, specifically, the radial direction between the two excluding the two annular convex portions 582 and 583. The interval is set to be longer than the width (radial width) of the tip surface (tip) 212 of the mouth portion 21 of the container 2.

  The annular protrusion 582 on the inner peripheral side is arranged in an endless annular shape continuously in the circumferential direction, and if there is a plane (the lower surface 61 of the sheet-like packing 6) whose tip is opposed to the upper position, it is on that plane. It has a projecting cross-sectional shape so as to contact with a line contact. For example, the cross-sectional shape of a triangle or a convex curve (convex radius) as shown in FIG. 17 is set. Further, the amount of protrusion is set so that the tip (projecting end) of the annular protrusion 582 on the inner peripheral side is positioned higher than the tip (protrusion end) of the annular protrusion 583 on the outer peripheral side. In this embodiment, the inner circumferential annular convex portion 582 is formed so as to protrude upward from a part of the opening end surface 513 constituting the upper opening 511 of the peripheral wall 51, but this is not limiting, and the opening end surface 513 is not limited thereto. Alternatively, it may be formed at a position on the outer peripheral side with respect to the peripheral wall 51. In this case, the annular projection 582 is projected so that the tip of the annular projection 582 is positioned higher than the opening end surface 513.

  The annular convex portion 583 on the outer peripheral side is formed so that the tip (protruding end) has a convex curved (convex radius) cross-sectional shape and becomes a smooth surface, and in a state where no external force is applied. The upward projecting dimension is set so as to be positioned lower than the annular protrusion 582 on the inner peripheral side. The reason why the tip surface of the annular convex portion 583 is set to have a smooth curved surface is that the upward force from the tip surface 212 of the mouth 21 of the container 2 with respect to the center position of the outer peripheral flange body portion 581 as will be described later. This is because the adhesiveness to the sheet-like packing 6 accompanied by the elastic restoring force of the outer peripheral flange 58 is improved by making it easily slip to the outer peripheral side after contacting the lower surface of the sheet-like packing 6.

  Each engagement piece 584 protrudes in a tongue shape from a position at a predetermined interval in the circumferential direction on the outer peripheral end surface of the outer peripheral flange 58, and is formed so as to be gradually thinned toward the distal end side so as to be easily bent. Yes. Each engagement piece 584 is engaged with the engagement portion 312 of the outer lid 3 from the bottom to the top of the drawing (from the lower end opening toward the top wall 32), and the inner lid 5c is placed in the outer lid. 3 is held in a mounted state.

  The sheet-like packing 6 is formed in a disk shape having a relatively thin wall thickness (for example, 0.5 mm thickness) and an outer diameter substantially the same as the inner diameter of the outer lid 3, and the lower surface is particularly flat. Is formed. This sheet-like packing 6 is pushed into the inner back of the outer lid 3 before the inner lid 5c is mounted, that is, pushed over the engaging portion 312 from the bottom to the top of the drawing. By mounting 5c, it is held in a state of being sandwiched between the inner lid 5c and the outer lid 3. In order to make it easier to get over the engaging portion 312, the sheet-like packing 6 is formed so as to be gradually thinned toward the tip by forming a chamfered portion, particularly on the upper side of the outer peripheral edge 60.

  As described above in the first embodiment, various synthetic resin molding materials may be adopted as the material of each component of the outer lid 3, the inner lid 5c and the sheet-like packing 6 that constitute the lid. Although it is possible, in particular, when the container 2 is used in the field of pharmaceutical packaging materials, the following is preferable. In other words, according to the request for standardization of plastic bottles for solid lumber ("Standardization of plastic bottles for solid lumber" Pharmaceutical packaging material standardization committee Satoshi Shinoda PHARM TECH JAPAN Vol.17 No.7 2001 p27-p39) Both the outer lids 3 are made of high-density polyethylene, and the sheet packing 6 is made of a foamed polyethylene sheet or a low-density polyethylene liner. The inner lid 5 is formed mainly of low density polyethylene. For example, olefinic materials such as PE-LD (low density polyethylene), PE-LLD (linear low density polyethylene), PE-MD (medium density polyethylene) can be used alone, or any of these materials can be used. On the other hand, a blend of PE-HD (high density polyethylene), EVA (ethylene-vinyl alcohol copolymer resin), elastomer or the like may be used. In particular, when the outer lid 3 is formed rigidly using high-density polyethylene or ABS resin, the sheet-like packing 6 is formed from the above foamed polyethylene or the like, and the inner lid 5c is formed from low-density polyethylene or the like. Thus, by forming both the sheet-like packing 6 and the inner lid 5 softly, the sealing function can be enhanced while complying with the standardization request.

  In addition to the above, as the sheet-like packing 6, in addition to the above, one side of a foamed polyethylene sheet or low-density polyethylene liner which is a closed cell foam foamed 1.5 to 3.0 times (one side on the inner lid 5c side) ) Or various films such as PP (polypropylene), PE, and tetrafluoroethylene may be integrally bonded to both surfaces to form a two-layer structure or a three-layer structure. In this way, when the outer lid 3 fitted with the inner lid 5c is screwed into the container 2 and closed as described later, the sheet-like packing 6 and the annular convex portion 582 on the inner peripheral side of the outer peripheral flange 58 are provided. By causing contact slip with 583 in the circumferential direction, the closing torque is stabilized, and conversely, the opening torque at the time of opening is also stabilized.

  In the above, in order to assemble the lid, first, the sheet-like packing 6 is pushed inward from the lower end opening of the outer lid 3, and the outer peripheral edge 60 gets over the engaging portion 312 and pushes to the inner surface position of the top wall 32. . Next, when the desiccant 4 is put into the accommodation space 54 from the upper opening 511 of the inner lid 5c, and the inner lid 5c in a state where the desiccant 4 is accommodated inside is pushed inward from the lower end opening of the outer lid 3, The engaging pieces 584, 584,... Of the outer peripheral flange 58 are held in a state of overcoming the engaging portion 312 and are thus attached (see FIG. 17). In this state, the annular convex portion 582 on the inner peripheral side of the outer peripheral flange 58 is in contact with the lower surface 61 of the sheet-like packing 6, and in such a mounted state, the sheet-like packing 6 and the inner lid 5 c are outside. It is assembled to the lid 3 integrally. When the outer lid 3 in this state is screwed into the mouth portion 21 of the container 2 with the screw portions 211 and 311, the front end surface 212 of the mouth portion 21 comes into contact with the substantially center position of the outer peripheral flange body portion 581 of the outer peripheral flange 58, When the outer lid 3 is screwed and stopped to such an extent that a predetermined resistance is generated, the end face 212 presses the outer peripheral flange main body portion 581 upward as shown in FIG.

  At this time, even if the inner lid 5c is not coaxially arranged (concentric arrangement) with the outer lid 3 in the above-described mounting operation, but is mounted with a slight misalignment, it is automatically turned by the closing operation. It will be rearranged in the arrangement and will reach a plugged state. That is, if the thicknesses and dimensions of the locking pieces 584, 584,... Vary, the inner lid 5 may be installed in a state of being out of center with respect to the outer lid 3. However, even if it is mounted in an off-centered state, it is screwed into the mouth 21 of the container 2 so that the distal end surface 212 is the outer peripheral side position or the inner peripheral side position of the outer peripheral flange body 581. When the relative rotational force starts to act on the outer peripheral flange 58, the annular convex portions 582 and 583 that are in contact with the sheet-like packing 6 by the curved surface of the convex curve are formed. 6 slides relative to each other in the circumferential direction. Further, when the outer lid 3 is further screwed to increase the closing torque (tightening torque), the distal end surface 212 is positioned at the radial center position where the outer peripheral flange body 581 is most likely to be deformed (bent). The inner lid 5c causes a relative displacement in the circumferential direction, so that the relative arrangement of the inner lid 5c with respect to the outer lid 3 is rearranged to be a coaxial position. That is, the centering function of correcting the misalignment of the inner lid 5c by the closing operation and automatically rearranging it coaxially by the outer peripheral flange main body portion 581 and the annular convex portions 582 and 583 on both sides is exhibited. become.

  In this closed state, the desiccant 4 faces the inside of the container 2 through the lower opening 512, whereby the desiccant 4 comes into contact with the atmosphere in the container 2, and the atmosphere in the container 2 is changed. Although it is maintained in a moisture-proof or humidity-controlled state, it exhibits a high airtightness that can highly shield the container 2 and the outside.

  That is, when the plugged state is viewed in detail with reference to FIG. 18, the distal end surface 212 of the mouth portion 21 first strikes the lower surface of the outer peripheral flange main body 581 before reaching the closed state, and when the outer lid 3 is further screwed, the distal end The surface 212 presses the outer peripheral flange main body portion 581 relatively upward, whereby the outer peripheral side of the outer peripheral flange main body portion 581 is pushed up, and the annular convex portion 583 on the outer peripheral side contacts the lower surface of the sheet-like packing 6. It will be. Then, when the outer lid 3 is slightly screwed, the outer peripheral flange main body 581 is elastically deformed so as to bend its central portion upward, and thereby the resistance to the screwing of the outer lid 3 is rapidly increased. This increase stops screwing and leads to a plugged state. If there is a misalignment as described above, the inner lid 5c is slightly displaced in the circumferential direction in this process and is rearranged at the coaxial position so that the front end surface 212 moves through the central portion of the outer peripheral flange main body 581. Will be pressed. In this closed state, the outer lid 3 and the mouth portion 21 of the container 2 are maintained in a state in which the relative positional relationship with respect to the vertical direction is fixed by the engagement of the screw portions 211 and 311. The restoring force is maintained in a state in which it acts in the vertical direction between the front end surface 212 of the mouth portion 21 and the lower surface 61 of the packing 6. Due to this elastic restoring force, the two annular convex portions 582 and 583 are pressed upward against and closely contact the lower surface 61 of the sheet-like packing 6, and at the same time, the lower surface of the outer peripheral flange body portion 581 is directed downward with respect to the distal end surface 212 of the mouth portion 21. It will be pressed and will be maintained in close contact.

  As described above, the leakage path a (see FIG. 25) passing through the boundary between the front end surface 212 of the mouth portion 21 and the outer peripheral flange 58 also forms the boundary between the outer peripheral flange 58 of the inner lid 5c and the sheet-like packing 6. Both of the passages of the leaked passage b can be completely blocked, and a sealing function between the lid formed by the outer lid 3, the inner lid 5c and the sheet packing 6 and the mouth portion 21 of the container 2 is ensured. Can be secured. Thereby, the airtightness which maintains the inside of the container 2 in an airtight state can be improved. Further, the inner flange surface 582 of the outer peripheral flange 58 or the inner and outer ring-shaped convex portions 582 and 583 are in close contact with the inner and lower surfaces of the top wall 32 of the outer lid 3 formed of a hard material. However, since the lower surface 61 of the sheet-like packing 6 formed of a relatively soft material is used, the annular convex portion 582 on the inner peripheral side that receives the elastic restoring force from the outer peripheral flange main body 581 is used as the sheet-like packing 61. The lower surface 61 of the container 3 can be brought into close contact with each other so that the sealing function can be further ensured, and the improvement in the airtightness of the container 3 can be maintained for a longer period of time. Become.

  In addition, the annular protrusion 582 on the inner peripheral side does not come into contact with the lower surface 61 of the sheet-like packing 6 in contact with each other, but comes into close contact with each other so as to bite after line contact. The contact pressure received by the elastic restoring force acts on the lower surface 61 of the sheet-like packing 6 with the line contact portion being maximized, thereby further improving the blocking function by the contact and more reliably performing the sealing function. To be able to. At that time, not only the sheet packing 6 but also the outer peripheral flange 58 including the annular protrusion 582 is formed of a soft synthetic resin, so that the annular protrusion 582 is elastically deformed after closely contacting the lower surface 61 by line contact. It will be in close contact with each other and a higher blocking function can be exhibited. In addition, since the protruding end of the annular protrusion 582 on the inner peripheral side is positioned higher than the protruding end of the annular protrusion 583 on the outer peripheral side, the annular protrusion 582 on the inner peripheral side receives an elastic restoring force. This is more strongly pressed against the lower surface 61 of the sheet-like packing 6 and bites into it, so that the blocking function due to the above-mentioned adhesion can be achieved more reliably. Further, since the protruding end of the annular convex portion 583 on the outer peripheral side is a smooth surface having a convex curve, the annular convex portion 583 extends along the lower surface 61 of the sheet-like packing 6 when the outer peripheral flange main body portion 581 is elastically deformed. Thus, the outer peripheral flange main body 581 can be reliably guided to elastic deformation to the upward curve, and the elastic restoring force can be reliably generated.

  Further, the sheet-like packing 6 exhibits higher sealing performance particularly when a jump screw structure is adopted as the screw portion 311 of the outer lid 3. That is, as the screw portion 311 formed on the inner peripheral surface of the outer lid 3, in order to facilitate the die removal of the screw mold after molding and to improve the moldability of the outer lid 3, a screw is formed on a part in the circumferential direction. In some cases, a jump screw structure is employed in which the thread is intermittently extended without the. When this jump screw structure is employed, a split line is formed on the inner surface of the top wall 32 so as to connect both opposing positions of the inner peripheral surface of the peripheral wall 31 when the screw mold is split. Although such a dividing line will form unevenness even though it is minute, the dividing line is covered by the sheet-like packing 6 and the minute unevenness is absorbed, resulting in the presence of the dividing line. Therefore, it is possible to prevent the intrusion of water vapor and to exhibit high sealing performance. In order to exert such significance, it is preferable that the sheet-like packing 6 is formed as an elastic seal body with silicon rubber, elastomer or the like.

<Fifth Embodiment>
In the fifth embodiment, the sheet-like packing 6 of the fourth embodiment is omitted and the outer lid 3 and the inner lid 5c constitute a container lid. The fifth embodiment is different from the fourth embodiment except for this point. The components such as the inner lid 5c having the same configuration are used.

  That is, also in the case of the fifth embodiment, when the outer lid 3 with the inner lid 5c containing the desiccant 4 attached is screwed into the mouth portion 21 with the screw portions 211 and 311, the tip of the mouth portion 21 Similarly to the fourth embodiment, the surface 212 (see FIG. 19) abuts the lower surface of the outer peripheral flange main body 581 of the outer peripheral flange 58, and is further screwed in so that the distal end surface 212 advances to a relatively upper position (see FIG. In the state shown in FIG.

  In this closed state, the outer peripheral flange main body portion 581 is elastically deformed so that the central portion is curved upward, whereby the two annular convex portions 582 and 583 are attached to the outer lid 3 by the elastic restoring force of the outer peripheral flange main body portion 581. At the same time, the lower surface of the outer peripheral flange main body 581 is pressed downward against the front end surface 212 of the mouth portion 21 and is kept in close contact with the inner lower surface 321 of the top wall 32. .

  Also according to the fifth embodiment, the leakage path a (see FIG. 25) passing through the boundary between the front end surface 212 of the mouth portion 21 and the outer peripheral flange 58 is also the top of the outer peripheral flange 58 of the inner lid 5 and the top of the outer lid 3. Both paths of the leakage path b through the boundary with the wall 32 can be completely blocked, and the seal between the lid comprising the outer lid 3 and the inner lid 5 and the mouth 21 of the container 2 The function can be surely secured. Thereby, the airtightness which maintains the inside of the container 2 in an airtight state can be improved.

<Other embodiments>
Note that the present invention is not limited to the above embodiments, and includes other various embodiments. For example, in each of the above embodiments, the inner lids 5, 5a, 5b, 5c and the outer lid 3 are mounted by engaging the engaging pieces 522, 584 and the engaging portion 312. If the desiccant 4 is replaced and the inner lid 5 or the like and the outer lid 3 are not required to be reused, that is, when discarded after one use, the inner lid 5 or the like can be attached to and detached from the outer lid 3. There is no need to mount, and a strong mounting means such as adhesion or pressure bonding may be employed.

  In each of the above-described embodiments, the weakening portion 55 is configured by a concave groove opening on the surface on the side of the accommodation space 54 (the surface facing the accommodation space 54), that is, on the surface opposite to the side to be shredded. However, the present invention is not limited to this. For example, as shown in FIG. 24A, the weakened portion 55 ′ (circumferential weakened portion 552 ′) is formed by a concave groove that opens on the surface to be shredded (the upper surface in FIG. 24). Of course, the weakened portion 55 ″ (circumferentially weakened portion 552 ″) may be formed by a pair of concave grooves that open on both sides as shown in FIG. 24 (b).

  The mesh member 56 is joined to the inner peripheral flange 53 of the inner lid 5c of the fourth or fifth embodiment as in the second embodiment, or by a cross member or a cross member such as the cross member 53 as in the third embodiment. You may add the reinforcement member comprised, and also apply what added the mesh member 56 to the thing of 3rd Embodiment.

  In the fourth or fifth embodiment, it is essential that the annular protrusion 582 on the inner peripheral side is endless and has a projecting cross-sectional shape so as to be in line contact, but the annular protrusion 583 on the outer peripheral side is essential. May not necessarily be endless, but may be intermittently protruded, or may not be a smooth protruding end such as a convex curve. The blocking function of the sealing function can be realized by the annular protrusion 582 on the inner peripheral side, while the annular protrusion 583 on the outer peripheral side is elastically deformed by elastically deforming the outer peripheral flange main body 581 so that the central part has a convex curve. This is because it is sufficient to fulfill the role of a leg or a fulcrum for exerting the restoring force. In addition, since the width of the annular convex portion 583 on the outer peripheral side is originally a very small width, even if it is not strictly formed at the smooth projecting end of the convex curve, it is accompanied by pressing from the front end surface 212 of the mouth portion 21. This is because it is considered that the sheet-like packing 6 easily slides along the lower surface 61 of the sheet packing 6 or the inner lower surface 321 of the top wall 32.

  In the fourth embodiment, the sheet-like packing 6 formed separately from the outer lid 3 is shown. However, the present invention is not limited to this, and the sheet-like packing is integrally formed in advance on the inner surface of the outer lid. Also good. In this case, for example, a lining layer using, for example, natural rubber or synthetic rubber may be integrally formed on the inner surface 32 of the outer lid 3 in advance. That is, the sheet-like packing may be separate from or integral with the outer lid 3.

  Furthermore, in 4th Embodiment, although the disk-shaped thing was shown as the sheet-like packing 6, it is not restricted to this, As a sheet-like packing, the strip | belt shape which can contact at least the cyclic | annular convex part 582,583 of the outer periphery flange 58 is shown. It may be present in the range, that is, it may be a donut ring shape.

  A case in which the container 2 is closed with a lid made of the outer lid 3, the inner lid 5c and the sheet-like packing 6 of the fourth embodiment, and a container 2 made of the lid made of the outer lid 3 and the inner lid 5c of the fifth embodiment. FIG. 20 and FIG. 21 show the results of a water vapor permeability test conducted to examine the performance of airtightness for two types of test specimens, the case in which the cap is closed. Specifically, in each case, there are six types of lid tightening torques of 118 N · cm, 137 N · cm, 157 N · cm, 177 N · cm, 275 N · cm, and 300 N · cm, which are the fastening degrees by the screw portions 211 and 311. Twenty test bodies were prepared in which the silica gel was sealed in the container 2 and the outer lid 3 was tightened for each tightening torque value. Based on the weight change of the silica gel after one month. The water vapor transmission rate (mg / day) was examined. In both cases, a relative humidity of 40 ° C.-RH 75% was set as the exposure condition. In addition, about the container 2, the outer lid 3, and the inner lid 5c, in order to eliminate the influence of the dispersion | variation based on a shaping | molding die, prior confirmation was implemented.

  In short, the case of the fourth embodiment is provided with the sealing performance when the sheet packing 6 is combined with the configuration of the outer peripheral flange 58, and the case of the fifth embodiment is basically the sheet packing 6. The sealing performance is based on the configuration of the outer peripheral flange 58 except for. Further, the difference in tightening torque appears as a difference in the degree to which the front end surface of the mouth portion 21 relatively presses the outer peripheral flange body portion 581, resulting in a difference in elastic restoring force exerted from the outer peripheral flange body portion 581. That is, it is thought that it appears as a difference in the durability of the sealing performance and the sealing function.

In the case of the fourth embodiment, as shown in FIG. 20, regardless of the above-described six tightening torque values, the water vapor permeability is about 0.5 mg / day or less at all the tightening torque values. An extremely low value was shown. In other words, even when the lid composed of the outer lid 3, the inner lid 5c and the sheet packing 6 is loosely closed with a torque of about 118 N · cm, the lid is closed with a tight torque of 300 N · cm. However, both demonstrated extremely high sealing performance and sustained that high sealing performance.
On the other hand, in the case of the fifth embodiment, as shown in FIG. 21, if the lid composed of the outer lid 3 and the inner lid 5c is closed in a range of torque 157 N · cm to 300 N · cm, It showed extremely low water vapor permeability almost the same as the case, and demonstrated extremely high sealing performance. On the other hand, when the cap was tightened with a tightening torque of 118 N · cm or 137 N · cm, the water vapor transmission rate was considerably varied. According to this, even in the case of the fifth embodiment, it can be said that extremely high sealing performance and sustainability can be exhibited by closing the lid with a certain amount of tightening torque and closing the lid.

  In the case of the above fourth embodiment and the case of the fifth embodiment, the result of confirming the elastic deformation state by the X-ray fluoroscopic apparatus for the outer peripheral flange 58 portion in the closed state with a predetermined tightening torque. It shows in FIG.22 and FIG.23.

  An X-ray fluoroscopic image obtained by using a micro-focus X-ray fluoroscopy device (SMX-1000) manufactured by Shimadzu Corporation as the X-ray fluoroscopy device and setting the output to a tube voltage value of 90 kV and a tube current value of 100 μA as the transmission conditions 22 (case of the fourth embodiment) and FIG. 23 (case of the fifth embodiment).

  According to this, a situation similar to the situation where the outer peripheral flange 58 is elastically deformed as shown in FIG. 18 or FIG. 19 can be confirmed. Further, particularly when FIG. 22 is viewed, it can be seen that the protruding end of the annular convex portion 582 (see FIG. 18) on the inner peripheral side slightly bites into the sheet-like packing 6.

It is a partially abbreviated sectional view showing a closed state of an embodiment of the present invention. It is a perspective view which shows the decomposition | disassembly state before an apparatus about the outer cover of FIG. 1, a desiccant, and an inner cover. It is a partially cutaway perspective view when the inner lid is viewed obliquely from above. It is a perspective view at the time of seeing an inner lid from diagonally downward. It is a bottom view of an inner lid. 6A is a partially omitted enlarged sectional explanatory view taken along line AA in FIG. 5, and FIG. 6B is a partially omitted enlarged sectional explanatory view taken along line BB in FIG. (C) is a partially omitted enlarged cross-sectional explanatory view taken along the line CC of FIG. It is a perspective view of the outer lid | cover with which the inner lid was mounted | worn in the state which accommodated the desiccant inside, Comprising: It is a perspective view for demonstrating the method of tearing an inner peripheral flange when it is used. FIG. 8A shows a state in which the knob is slightly pulled from the state of FIG. 7, and FIG. 8B shows a state in which the inner peripheral flange is further shredded. FIG. 9 is a perspective view showing a state in which the inner peripheral flange is completely torn from the state of FIG. 8B and separated from the inner lid. It is a figure corresponding to Drawing 4 showing a 2nd embodiment. FIG. 5 is a diagram corresponding to FIG. 4 illustrating a third embodiment. It is a bottom view of the inner lid of FIG. 13A is a partially omitted enlarged sectional explanatory view taken along the line DD of FIG. 12, and FIG. 13B is a partially omitted enlarged sectional explanatory view taken along the line EE of FIG. It is a partially abbreviated sectional view showing the plugged state of the fourth embodiment. It is a perspective view which shows the decomposition | disassembly state before mounting | wearing about the outer cover of FIG. 14, a sheet-like packing, a desiccant, and an inner cover. It is a partially cutaway perspective view when the inner lid is viewed obliquely from above. It is expansion sectional explanatory drawing of an outer periphery flange. It is an expanded sectional explanatory view centering on the outer periphery flange in a plugged state. FIG. 19 is a diagram corresponding to FIG. 18 in the case of the fifth embodiment. It is a figure which shows the test result about the water vapor transmission rate in the case of 4th Embodiment. It is a figure which shows the test result about the water vapor transmission rate in the case of 5th Embodiment. It is a photograph of the X-ray fluoroscopic image of the outer periphery flange part vicinity in the case of 4th Embodiment. It is a photograph of the X-ray fluoroscopic image of the outer periphery flange part vicinity in the case of 5th Embodiment. FIG. 24 (a) is a diagram corresponding to FIG. 6 (a) in a form different from that of FIG. 6 (a), and FIG. 24 (b) is different from FIG. 24 (a). It is a figure corresponding to Drawing 6 (a) of a different form. It is a fragmentary sectional view for demonstrating the conventional problem.

Explanation of symbols

2 Container 3 Outer lid 4 Desiccant 5 Inner lid 6 Sheet packing 21 Mouth part 31 Outer cover peripheral wall 32 Outer cover top wall 51 Inner cover peripheral wall 53, 53a Inner peripheral flange 53b Reinforcement member 54 Storage space 55 Weakening part 56 Mesh member (reinforcing member)
58 Outer peripheral flange 61 Lower surface 212 of sheet-like packing Front end surface of mouth (tip of mouth)
511 Upper side opening 512 Lower side opening 531 Knob piece 581 Outer peripheral flange body 582 Inner peripheral annular projection 583 Outer peripheral annular projection

Claims (9)

A peripheral wall that opens in the vertical direction and has an interior serving as a desiccant accommodating space, and an inner peripheral flange that protrudes radially inward from the lower end edge of the peripheral wall and supports the internal desiccant so that it does not fall off,
The inner peripheral flange is formed integrally with the peripheral wall via a linear weakened portion weakened to such an extent that it can be shredded.
The inner lid of a container, wherein the weakened portion is formed over the entire circumference along a boundary position between the peripheral wall and the inner peripheral flange. An inner lid of the container according to claim 1,
The inner peripheral flange is provided with a knob piece in a part of the circumferential direction, and the container is configured such that by pulling the knob piece, the inner peripheral flange is torn along the weakened portion with the knob piece as a starting end. Inner lid. An inner lid of the container according to claim 1 or 2,
An inner lid of a container, further comprising a reinforcing member that connects and reinforces the inner peripheral edges of the inner peripheral flange. An inner lid of the container according to any one of claims 1 to 3,
An inner lid of a container further comprising a breathable mesh member joined so as to cover an opening on the inner peripheral edge side of the inner peripheral flange. An inner lid of the container according to any one of claims 1 to 4,
The weakened portion is an inner lid of a container that is configured by a minute-width concave groove that opens to the housing space side. An inner lid of the container according to any one of claims 1 to 5 and an outer lid having a top wall and a peripheral wall and screwed into a mouth of the container, the upper end opening of the peripheral wall in the inner lid A container lid formed integrally with an outer peripheral flange that protrudes radially outward from the edge over the entire circumference and is sandwiched between the inner bottom surface of the outer lid and the tip of the mouth of the container in the closed state. Because
The outer peripheral flange is elastically deformed by receiving upward pressing from the tip of the mouth of the container on the lower surface side in the closed state, and the upper side from the inner peripheral side position of the outer peripheral flange main body. An annular convex part on the inner peripheral side protruding to the outer peripheral side, and an annular convex part on the outer peripheral side protruding upward from the outer peripheral side position of the outer peripheral flange body part,
Among the annular protrusions on the inner and outer circumferences, at least the annular protrusion on the inner circumference side has a protruding cross-sectional shape in which the projecting end can be in line contact with the inner and lower surfaces of the outer lid, and extends over the entire circumference. A container lid characterized by being formed in an endless state. An inner lid of the container according to any one of claims 1 to 5 and an outer lid having a top wall and a peripheral wall and screwed into a mouth of the container, the upper end opening of the peripheral wall in the inner lid A container lid formed integrally with an outer peripheral flange that protrudes radially outward from the edge over the entire circumference and is sandwiched between the inner bottom surface of the outer lid and the tip of the mouth of the container in the closed state. Because
A sheet-like packing that is disposed between the outer peripheral flange and the inner and lower surfaces of the outer lid and is sandwiched between the inner and lower surfaces of the outer lid and the mouth end of the container together with the outer peripheral flange in the closed state. With
The outer peripheral flange is elastically deformed by receiving upward pressing from the tip of the mouth of the container on the lower surface side in the closed state, and the upper side from the inner peripheral side position of the outer peripheral flange main body. An annular convex part on the inner peripheral side protruding to the outer peripheral side, and an annular convex part on the outer peripheral side protruding upward from the outer peripheral side position of the outer peripheral flange body part,
Of the annular protrusions on the inner and outer circumferences, at least the annular protrusion on the inner circumference side has a projecting cross-sectional shape in which the protruding end can make line contact with the lower surface of the sheet-like packing, and extends over the entire circumference. A container lid characterized by being formed in an endless state. A container lid according to claim 7,
The said sheet-like packing is a lid | cover of a container currently formed with soft synthetic resin to such an extent that the protrusion edge of the said annular convex part of the said inner peripheral side bites in a closed state. A container lid according to any one of claims 6 to 8,
The protruding end of the inner circumferential annular protrusion is set to be positioned higher than the protruding end of the outer annular protrusion in a state before the mouth of the container comes into contact with the outer peripheral flange body. The container lid.