JP2008162593A - Tamper-evident container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tamper-evident container capable of reliably and sufficiently realizing the tamper-evidence function while employing a pilfer-proof cap which is integrally molded of a synthetic resin and suitable for mass production. <P>SOLUTION: The pilfer-proof cap with a pilfer-proof band 32 being integrally coupled with a cap body 31 via a bridge part 33 is fitted to a mouth part 21 of a container body 2. When the cap is fully screwed, an engagement claw 34 rides over a flange part 23 downward and is engaged with a lower surface of the flange part. When the cap body is screwed back, the bridge part is broken, and separated from the pilfer-proof band to be unsealable. Even when the upwardly tension force is applied to the engagement claw by the screw-back of the cap body, the radially inward displacement is prevented by the presence of a projecting stepped part 24 and the bridge part is reliably broken. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is intended to prevent tampering by leaving unsealed evidence when tampering is performed, or to prove that tamper evidence has not been tampered with (tampered). : Tamper proof or Tamper resistance is also synonymous) Tamper evident containers realized by using a Pilfer proof cap, more specifically, more reliable realization of the tamper evidence function It relates to the technology that can be achieved.

  Conventionally, as tamper-evident containers, in addition to those using means such as shrink wrapping or cap seals, those using a screw-in type synthetic resin pilfer proof cap are known. As such a pilfer-proof cap, a pilfer-proof band is continuously provided via a bridge portion that can be torn to the lower side of the cap body, and a plurality of engagements are performed radially inward from the inner peripheral surface of the pilfer-proof band. The thing which protruded the nail | claw diagonally upward is proposed (for example, refer patent document 1). Then, the flange portion is protruded from the lower position of the screw portion on the outer peripheral surface of the mouth portion of the container main body to the outer peripheral side (outward in the radial direction), and a pill is formed against the mouth portion of the container main body after containing the contents. When the far proof cap is screwed in, the distal end side of the engaging claw hits the flange portion and bends radially outward to be elastically deformed. The tip end is engaged with the lower surface of the flange portion, and the capping sealing work is completed. In short, the pilfer proof band is prevented from being detached from the container main body by the engagement of the engaging claw with the flange portion, and the cap main body integrated with the pilfer proof band and the bridge portion is also attached to the container main body. On the other hand, it is capped in a state where it is prevented from coming off, that is, in a state where it cannot be opened by normal operation.

Japanese Patent No. 3469545

  By the way, in the conventional tamper evident container as described above, when the pilfer proof cap is forcibly unscrewed in an attempt to open the container, the tip of the engaging claw is originally attached to the container along with the unscrewing operation. While the pilfer proof band is locked to the lower surface of the flange portion of the main body and the movement in the opening direction is prevented, the container main body tries to move in the opening direction, so that the container main body and the cap main body of the pilfer proof cap The bridge portion is broken by receiving a shearing force in the open side rotation direction. As a result, since the pilfer proof band and the cap body of the pilfer proof cap are separated from each other, the pill fur proof band remains in the container body, but the cap body is unscrewed from the container body and the container can be opened. Become.

  However, in reality, as a result of the above-described screw unwinding operation, the leading end of the engaging claw slides inward in the radial direction along the lower surface of the flange portion, and the base end side of the engaging claw is bent upward. There is a concern that the engaging claw itself may be inverted downward from the pilfer proof band and disengaged from the flange portion. In addition to this phenomenon, if some of the engaging claws slide inwardly in the radial direction as described above as the cap body is unscrewed, not all of the bridge portions will be broken at the same time. If only the bridge of the part is broken, a twisting rotational force acts on the pilfer proof band and the pilfer proof band is lifted diagonally. As a result, some of the circumferentially engaging claws There is a possibility of inconvenience that the engagement with the flange portion is released in order. When such disengagement occurs, the pilfer proof band is not separated from the cap body, but is removed together with the cap body and comes out of the container body, so that the tamper evidence function cannot be achieved.

  On the other hand, if the pilfer proof cap is to be manufactured integrally with the pill fur proof band by synthetic resin molding, the inner mold for molding the inner surface shape needs to be removed after molding. It is necessary to set the position of the inner peripheral surface of the pilfer proof band, that is, the tip of the engaging claw, radially outward than the inner peripheral surface of the cap body. As a result, the protrusion of the flange portion has to be set to a position where it can be locked to the front end of the engaging claw, and as a result, the engaging claw is radially inward along the lower surface of the flange portion as described above. There will be a gap that allows sliding.

  Furthermore, even if the bridge part breaks due to the screw unscrewing operation of the cap body and the pilfer proof band is separated from the pilfer proof band, the cap body is screwed again and the lower edge of the pilfer proof band is broken. If it comes into contact with the upper edge of the band, the difference between whether the pilfer proof band is separated or whether the connection is maintained by the bridge is not obvious at first glance. There is a possibility that it may be misunderstood that it has not been done.

  The present invention has been made in view of such circumstances, and the object of the present invention is to provide a tamper evidence function while adopting a pilfer proof cap suitable for mass production by integral molding using a synthetic resin. It is an object of the present invention to provide a tamper evident container that can be reliably and sufficiently realized. In other words, when trying to open, all of the bridge parts are surely broken and the pilfer proof band is surely separated, and when opened, the pilfer proof band is already separated easily at a glance. And it is to be able to be surely visually recognized.

  In order to achieve the above object, the present invention comprises a container body that opens at the mouth portion, and a pilfer proof cap that seals the mouth portion of the container body, and an outer peripheral surface of the mouth portion of the container body. A screw portion and a flange portion projecting radially outward from the outer peripheral surface of the lower portion of the screw portion, and the pill fur proof cap is suspended from the top plate portion and the top plate portion. A plurality of engaging claws are connected from the inner peripheral surface through a peripheral wall portion screwed into the screw portion of the mouth portion and a weakening portion that can be broken by receiving a shearing force in the rotational direction with respect to the lower edge of the peripheral wall portion. A pilfer proof band integrally projecting inward and obliquely upward is integrally formed, and the container body and the pilfer proof cap are formed by screwing the pilfer proof cap into the mouth of the container body. Pilfer The projecting tip side of the plurality of engaging claws of the roof band is elastically deformed so as to get over the flange part, and after it gets over, it can be restored and engaged with the lower surface of the flange part, and the mouth of the container body is closed. The following specific items were provided for the tamper-evidence container configured to reach the mounted state. That is, with respect to the container body, the diameter of the protruding tip of the engaging claw that protrudes radially outward from the outer peripheral surface of the mouth portion adjacent to the lower position of the flange portion and engages the lower surface of the flange portion. A convex step for restricting the inward displacement in the direction is formed (claim 1).

  In the case of the present invention, when an attempt is made to open the cap body by unscrewing and rotating the cap body from the above mounted state, an upward pulling force acts on the pilfer proof band from the cap body side, and this pulling force is applied to the pulling force. On the other hand, the protrusion tip of the engaging claw stops and engages with the lower surface of the flange portion, thereby resisting. At this time, a convex step protrudes radially outward on the lower surface side of the flange portion, and this convex step prevents or restricts the radially inward displacement of the protruding tip of the engaging claw. The proof band can be reliably maintained coaxially with respect to the mouth of the container body without being tilted or inclined with respect to the central axis of the container body. As a result, it is possible to cause the screw unwinding rotation operation force to act evenly on all the weakened portions and simultaneously cause breakage. This makes it possible to reliably and sufficiently realize the tamper evidence function while adopting specifications suitable for mass production by integral molding using a synthetic resin as the pilfer proof cap. On the other hand, the prevention or restriction of the above-mentioned protrusion tip inward in the radial direction extends downward at the same outer peripheral surface position as the convex step portion as the outer peripheral surface of the mouth portion on the lower side of the flange portion without using the convex step portion. In such a configuration, even if the weakened portion breaks as described above, if the protruding tip of the engaging claw interferes with the outer peripheral surface of the mouth portion, the interference continues downward. The proof band may be difficult to fall. On the other hand, even if the projecting tip of the engaging claw interferes with the projecting stepped portion as in the present invention so that the lower position of the flange portion partially projects radially outward, Since the interference distance is limited to a short distance, the pilfer proof band can be easily and reliably dropped when it is broken at the weakened portion.

  With respect to the pilfer proof band in the present invention described above, the window portion that penetrates and opens in the inward and outward directions includes at least the projecting tip of the engaging claw, and the region above the projecting tip is visible from the outside. It forms in the position corresponding to the engaging claw, and the inward convex portion is directed radially inward from the inner peripheral surface at a position above the engaging claw to the inner position from the outer peripheral edge position of the flange portion. It can also be formed to protrude. In addition, as the pilfer-proof band, when the weakened portion is broken from the attached state of the pilfer-proof cap and separated from the cap body, the inwardly protruding portion from the upper surface of the flange portion in the attached state In the vertical direction, the outer peripheral surface of the convex step portion is vertically arranged between the flange portion and the protruding tip of the engaging claw due to the fall. The dimension which can be visually recognized through can be set (Claim 2). By doing so, when the weakened portion breaks, the pilfer proof band falls, so that the protruding tip of the engaging claw and the lower surface of the flange portion are separated from each other. The outer peripheral surface of the part is exposed. And since the outer peripheral surface of the exposed protruding step portion can be visually recognized from the outside through the window portion, the weakened portion is broken, that is, opened by seeing this. It becomes possible to recognize and grasp easily and reliably. As a result, the tamper evidence function can be improved.

  In this case, if the vertical interval is set to be larger than the vertical width of the outer peripheral surface of the convex step portion (Claim 3), when the pilfer proof band falls due to breakage of the weakened portion, A state in which the lower boundary of the convex stepped portion extends horizontally above the protruding tip of the engaging claw can be visually confirmed through the window portion, and it is visually confirmed that the above-mentioned state is opened. Can be easily recognized and grasped. Thereby, the tamper evidence function can be further improved.

  Furthermore, a color or pattern different from the outer peripheral surface of the pill fur proof band on which the window portion is formed can be given to the outer peripheral surface of the convex step portion so as to be visually identifiable (Claim 4). . By doing in this way, when the pilfer proof band falls due to the breakage of the weakened portion, the protruding step portion provided with a different color or pattern between the protruding tip of the engaging claw and the flange portion It can be easily recognized and grasped at a glance that the outer peripheral surface of the can be visually recognized through the window, and is in the opened state described above. become. As a result, the tamper evidence function can be further increased.

  As described above, according to the tamper-evident container of any one of claims 1 to 4, the cap main body is unscrewed and rotated from the mounted state engaged with the lower surface of the flange portion from the protruding tip of the engaging claw. Even if an upward pulling force is applied to the pill fur proof band from the cap body side when opening is attempted, the radially inward displacement of the protruding tip of the engaging claw is caused by the protruding step portion. Since it is blocked or regulated, it can reliably resist the pulling force described above, and it can be reliably against the mouth of the container body without causing the pilfer proof band to fall or tilt with respect to the central axis of the container body. The arrangement state on the same axis can be maintained. As a result, it is possible to cause the screw unwinding rotation operation force to act evenly on all the weakened portions and simultaneously cause breakage. This makes it possible to reliably and sufficiently realize the tamper evidence function while adopting specifications suitable for mass production by integral molding using a synthetic resin as the pilfer proof cap. Also, compared to the case where the outer peripheral surface of the mouth portion on the lower side of the flange portion extends downward at the same outer peripheral surface position as the above-mentioned convex step portion, the portion projecting radially outward as the convex step portion is locally Therefore, even if the projecting tip of the engaging claw contacts the outer peripheral surface of the convex stepped portion and interferes when it breaks at the weakened portion, the interference distance is limited to a short one. The pilfer proof band can be easily and reliably dropped.

  In particular, according to claim 2, when the weakened portion is broken, the pilfer proof band falls, so that the upper and lower portions of the projecting tip of the engaging claw and the lower surface of the flange portion are separated from each other. The outer peripheral surface of the convex stepped portion is exposed, and the exposed outer peripheral surface of the convex stepped portion can be viewed from the outside through the window portion. For this reason, it is possible to easily and reliably recognize and grasp that the weakened portion is broken, that is, in a state where it has been opened, by looking at the outer peripheral surface of the convex step portion. Thus, the tamper evidence function can be improved.

  According to the third aspect, when the pilfer proof band falls due to the breakage of the weakened portion, the state where the lower surface boundary of the convex step portion extends in a horizontal line above the protruding tip of the engaging claw is visually recognized through the window portion. Will be able to. For this reason, it becomes possible to visually recognize and grasp easily that it is in the above-mentioned opened state, and the tamper evidence function can be further improved.

  Furthermore, according to the fourth aspect, when the pilfer proof band falls due to the breakage of the weakened portion, the protrusion or protrusion having a different color or pattern is provided between the protruding tip of the engaging claw and the flange portion. The state where the outer peripheral surface of the step portion extends in the lateral direction can be visually recognized through the window portion. For this reason, it becomes possible to easily recognize and grasp that it is in the opened state as described above, and it is possible to further increase the tamper evidence function. It becomes like this.

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

  FIG. 1 shows a tamper evident container (TE container) 1 of the present embodiment. The tamper-evidence container 1 includes a bottle-shaped container body 2 that has a bottom and opens at an upper mouth portion 21, and a synthetic resin pilfer that is screwed into the mouth portion 21 of the container body 2 to seal the opening. It consists of a proof cap 3. By using the pilfer proof cap 3, the tamper evidence function is not realized.

  A screw portion 22 is formed on the outer peripheral surface of the mouth portion 21 of the container body 2, and a flange portion 23 is formed at a lower position of the screw portion 22. The flange portion 23 protrudes to a radially outward position from the screw portion 22, and a convex step portion 24 is continuously formed on the lower surface of the flange portion 23 on the lower surface of the flange portion 23. Such a container body 2 is formed by blow molding using a synthetic resin. Of course, as long as it can be formed with the same shape and dimensional accuracy as blow molding using synthetic resin, it may be formed of glass or the like. The details of the convex step 24 will be described later.

  As shown in FIG. 2 (a longitudinal sectional view of the pilfer proof cap 3 in FIG. 1), the pilfer proof cap 3 includes a bridge portion 33 in which a cap body 31 and a pilfer proof band 32 serve as a plurality of weakening portions. , 33,... Are integrally formed through synthetic resin molding. The cap body 31 is suspended from the top plate portion 311 that can cover the upper surface opening of the mouth portion 21 of the container body 2, the peripheral wall portion 312 that hangs from the periphery of the top plate portion 311, and the inner and lower surfaces of the top plate portion 311. The annular holding part 313 is formed by integral molding using a synthetic resin. A screw portion 314 that is screwed into the screw portion 22 of the mouth portion 21 is formed on the inner peripheral surface of the peripheral wall portion 312, and a knurled groove 315 is formed on the outer peripheral surface.

  Further, the lower end edge 316 of the peripheral wall portion 312 is expanded so as to have a slightly larger diameter, and as shown in FIG. 3, a plurality of protrusions projecting downward from the lower end edge 316 and having a stop surface in the vertical direction. (Two in the illustrated example) first supporting convex portions 317, 317 and one or more (two in the illustrated example) second supporting convex portions 318, 318 that protrude downward and have a stop surface in the circumferential direction; Are integrally formed. For example, when the pilfer proof cap 3 is packed in a stacked state separately from the container body 2 and transported in a stacked state, for example, the first support convex portion 317 may cap the load in the vertical direction. When acting on the main body 31, the load is transmitted to the pilfer proof band 32 side in a slightly bent state. Each of the second support convex portions 318 and a second support convex portion 324, which will be described later, and a pair of the second support convex portions 318 are in contact with each other while being slightly bent in the rotational direction when the cap body 31 is screwed. Is stopped and the rotational operation force is transmitted from the cap body 31 side to the pilfer proof band 32 side. All are provided for protecting the bridge portions 33, 33,...

  As shown in FIG. 4, the pilfer-proof band 32 includes an inner wall 321 as an inward convex portion that protrudes a predetermined amount radially inward (inner side) from the upper end position of the peripheral wall 321. A plurality of (eight in the illustrated example) engaging claws 34, 34,... Projecting diagonally upward from the lower position of the inner peripheral surface of the peripheral wall portion 321 in the radial direction. .. Are provided with windows 323, 323,... That open through the peripheral wall 321 in the radially outer region of each engaging claw 34 in the inner and outer directions. Further, the inward flange portion 322 protrudes upward from the upper end surface, and the circumferential contact surface faces the second support convex portions 318 on the cap body 31 side with a slight gap therebetween. A pair of second support convex portions 324 and 324 are integrally formed.

  The cap body 31 and the pilfer proof band 32 are coupled by the bridge portions 33, 33,... In a state where the cap body 31 and the pilfer proof band 32 are arranged coaxially with respect to the central axis X with a slight gap S therebetween in the vertical direction. Yes. The bridge portions 33, 33,... Have cross-sectional shapes set so as to be broken by receiving a shearing force in the rotational direction accompanying the relative rotation of the cap body 31 and the pilfer proof band 32 as will be described later. . Specifically, it is a small cross-sectional area that can be easily broken by receiving a screw unwinding operation force that is slightly higher than the normal degree with respect to the cap body 31, and a cross-sectional area that can be recognized by the operator as to the feeling that it has broken is secured. It is preferable to set as described above.

  Reference numeral 41 in FIG. 2 is a seal packing, and reference numeral 42 is a bottomed cylindrical pocket member for accommodating a moisture-proof agent. These are formed separately from the pilfer proof cap 3, and the seal packing 41 is fitted and held on the annular holding portion 313, and the pocket member 42 is fitted and held on the seal packing 41. Thus, the seal packing 41 and the pocket member 42 for accommodating the moisture-proofing agent are detachably held on the lower surface side of the top plate portion 311 of the pilfer-proof cap 3. The seal packing 41 is sandwiched between the top plate portion 311 and the opening end surface of the mouth portion 21 of the container body 2 by screwing the pilfer proof cap 3.

  Next, it demonstrates further in detail, referring FIG. 5 which shows the state with which the pilfer-proof cap 3 was mounted | worn with respect to the container main body 2. FIG.

  The pilfer proof cap 3 has an inner peripheral surface of the peripheral wall portion 312 of the cap body 31, an inner peripheral surface of the inward flange portion 322 of the pilfer proof band 32, in order to facilitate die-cutting in integral molding with synthetic resin. The inner diameters of the pilfer proof band 32 are set to be larger in the order of the inner peripheral surface of the peripheral wall portion 321. In short, the inner peripheral surface side is gradually expanded toward the lower end opening side of the pilfer proof cap 3. At this time, for each engaging claw 34 that protrudes radially inward, the radial position of the protruding tip 341 is the same as the inner peripheral surface of the inward flange 322 or the inward flange 322. It is set slightly outward in the radial direction from the inner peripheral surface. This is because if the protruding tip 341 protrudes radially inward from the inner peripheral surface of the inward flange portion 322, it is difficult to perform die cutting.

  The inner diameter of the inner peripheral surface of the peripheral wall portion 321 of the pilfer proof band 32 is set to be slightly larger than the outer diameter of the flange portion 23 of the container body 2, and the inner diameter of the inward flange portion 322 is set. The inner diameter of the peripheral surface is set to be smaller than the outer diameter of the flange portion 23. In addition, the inward flange portion 322 and the protruding tip 341 of the engaging claw 34 are positioned radially inward from the outer peripheral edge position of the flange portion 23 of the container body 2 with respect to the axis X (see FIG. 4). The protrusion tip 341 is set so as to be able to engage with the lower surface 231 of the flange portion 23 in the vertical direction when the pilfer proof cap 3 is attached (the state shown in FIG. 5). In other words, the flange portion 23 is located radially outward from the outer peripheral surface of the mouth portion 21 of the container body 2 with respect to the inward flange portion 322 whose diameter has been expanded as described above and the protruding tip 341 of the engaging claw 34. The protruding amount is set.

  Further, in the above-mentioned mounting state, that is, the pill fur-proof cap 3 is put on the mouth portion 21 of the container body 2 and screwed, and the projecting tip side of the engaging claws 34, 34,. .., Over the flange 23 while being elastically deformed, and when the screws are completely screwed in, the engaging claws 34, 34,... Finish over the flange 23 and the projecting tips 341, 341,. In a state where the elastic recovery is performed, a gap K having a minute interval of zero or more between the upper and lower surfaces of the protruding tip 341 and the lower surface 231 of the flange portion 23 (for example, K = 0.0 to 1.0 mm, preferably K = 0). (About .5 mm) is dimensioned on the safe side. That is, theoretically, the engaging claws 34, 34,... Of the pilfer proof band 32 are the flange portions just at the position where the pilfer proof cap 3 is completely screwed into the screw portion 22 of the mouth portion 21 of the container body 2. If the dimensions are set so as to get over 23 and be locked to the lower surface 231, capping can be performed without play. However, even if it is within the range, the dimensional variation at the time of manufacture is the side of the screw part 22 and the flange part 23 of the mouth part 21 of the container body 2 and the screw part 314 and the engagement of the cap body 31 of the pilfer proof cap 3. It exists also on the side of the claws 34, 34,. Therefore, in order to prevent screwing from being completed before the engaging claws 34, 34,... Get over the flange portion 23, the engaging claws 34, 34,. The screw body of the cap main body 31 is completed after the flange portion 23 has been overcome. As a result, even if there is a dimensional variation due to a manufacturing dimensional difference, the projecting tip 341 of each engagement claw 34 can surely finish over the flange portion 23 when the mounting state is reached. it can.

  Furthermore, in the above-mentioned mounting state, the dimension is set so that a predetermined amount of margin (vertical space) R exists between the upper surface position of the flange portion 23 and the lower surface position of the inward flange portion 322. And the formation area of the window part 323 is set to the area | region to the lower surface position of said inward flange part 322 which is the upper end position of this margin R. When the unscrewing operation is performed from the above-mentioned mounting state, the bridge portions 33, 33 are broken and the pilfer proof band 32 is separated from the cap body 31, the pilfer proof band 32 has a flange on the lower surface of the inward flange portion 322. It will fall until it hits the upper surface of the part 23. Accordingly, the margin R corresponds to the height at which the pilfer proof band 32 falls when separated from the cap body 31. The margin R is set so that the protruding tip 341 of each engaging claw 34 is located below the lower end position of the convex step 24 when the pilfer proof band 32 falls. For example, the margin R may be set to be equal to the vertical width H of the convex step portion 24 (R = H) or larger than the vertical width H. As a result, when the pilfer proof band 32 is separated from the cap body 31 and falls, the flange 23, the projecting tip 341 of the engaging claw 34, and the projecting tip 341 of the engaging claw 34 are projected through the window 323 in the dropped state. The presence of the outer peripheral surface 241 of the stepped portion 24 can be recognized at a glance.

  In addition, the radial interval T between the outer peripheral edge position of the flange portion 23 and the outer peripheral surface 241 position of the convex step portion 24 is such that the protruding tip 341 of the engaging claw 34 engaged with the lower surface of the flange portion 23 is radially inward. Is set to be restricted to a very small amount even if the displacement in the direction (to the right in FIG. 5) is zero or displaced. For example, the distance T1 between the inner end surface (radially inner end surface) of the protruding tip 341 of the engagement claw 34 and the outer peripheral surface 241 of the convex step portion 24 is set from zero to a very small dimension (T1 = 0). 0.0-0.5 mm). As a result, as will be described later, even if an upward force is applied to the pilfer proof band 32, the protruding tip 341 of the engaging claw 34 is hardly displaced inward in the radial direction and is engaged with the lower surface 231 of the flange portion 23. The combined state can be maintained. In addition, even if the interval T1 is zero, that is, even if the protruding tip 341 is in contact with the outer peripheral surface 241 of the convex step portion 24, the bridge portions 33, 33,. When the pilfer proof band 32 is separated from the cap body 31 by breaking, the pilfer proof band 32 can be easily dropped. That is, because the interference between the protruding tip 341 and the outer peripheral surface 241 of the convex step 24 is a local and partial interference of only the vertical width H of the convex step 24, Compared with the case where the surface 241 is formed so as to continuously extend downward as the outer peripheral surface of the mouth portion 21, the distance in the up-and-down direction that interferes with each other can be made extremely short. The pilfer proof band 32 can be easily dropped.

  Next, the tamper evidence function by the tamper evidence container 1 will be described in order. The container 25 in FIG. 1 is filled with an object such as a drug from the opening of the mouth portion 21 and the inside of the mouth portion 21 is filled. The opening is closed with a pilfer proof cap 3. That is, the pill fur proof cap 3 in a state in which the seal packing 41 and the pocket member 42 are engaged and held on the inside is covered with the mouth portion 21 from above, and the screw portion 314 of the cap body 31 is attached to the screw portion 22 with respect to the central axis X. Screw around. When a predetermined amount is screwed in, the protruding tip 341 side of each engaging claw 34 abuts against the flange portion 23 as described above, and a relatively upward pressing force acts from the flange portion 23, so that each protruding tip 341 side of the engaging claw 34 bends. When the inertial deformation and further screwing in, each projecting tip 341 climbs over the flange portion 23 and elastically recovers to reach the mounted state shown in FIGS. In this state, the windows 323, 323. Through this, the outer peripheral edge of the flange portion 23 and the state in which the engagement claw 34 is substantially stopped from the lower side and engaged with the flange portion 23 can be visually recognized from the outside. That is, the convex step portion 24 continuing to the lower surface of the flange portion 23 is substantially hidden by the engaging claw 34 and cannot be visually recognized through the window portion 323.

  When the gap body 31 is to be unscrewed to open, as shown in FIG. 7A, the protruding tip 341 of each engaging claw 34 abuts and engages with the lower surface 231 of the flange portion 23, thereby causing a pill. The movement of the fur-proof band 32 to the opening side (upper side) is prevented. At this time, microscopically, as shown in FIG. 7 (b), the projecting tip 341 of each engagement claw 34 has a minute amount along the lower surface 231 of the flange portion 23, as shown in FIG. By displacing inward in the radial direction and hitting the convex step portion 24, further displacement is prevented, and the upward movement of the pilfer proof band 32 is completely prevented at this stage. Along with this, the pilfer proof band 32 resists the operation of unscrewing the cap body 31 so as to stop it.

  Nevertheless, when a screw unwinding operation is performed with the intention of opening, each bridge portion 33 is broken by the rotational operation force as shown in FIG. The band 32 is separated from the cap body 31. As a result, the cap body 31 can be easily screwed back to the opening side by a normal screwing operation force, while the pill fur proof band 32 has an inward flange portion 322 having a flange portion as shown in FIG. It will fall until it hits the upper surface of 23. When this state is viewed from the outside, as shown in FIG. 9, the outer peripheral edge of the flange portion 23 is located at the upper position of each window portion 323 through each window portion 323 of the pilfer proof band 32, and the engaging claw 34 is provided for each window. It can be visually recognized in the lower half area of the part 323 so that the outer peripheral surface 241 of the convex step part 24 extends in the lateral direction between the flange part 23 and the engaging claw 34. Become. Moreover, the lower surface 242 of the convex step portion 24 can be visually recognized as a line segment extending in a horizontal line. Thereby, even if the cap main body 31 is screwed into the mouth 21 of the container main body 2 again, it can be surely recognized and grasped at a glance that the pilfer proof band 32 is separated. It becomes like this.

  At this time, if the container body 2 and the pilfer proof cap 3 are formed of synthetic resin materials having different colors, the presence of the outer peripheral surface of the convex step portion 24 through the window portion 323 can be seen at a glance. You will be able to recognize and understand more clearly. Further, when the container body 2 and the pilfer proof cap 3 are formed of synthetic resin materials having the same color as each other, at least the outer peripheral surface 241 of the convex step portion 24 has a color different from that of the pilfer proof band 32. If coloring is performed, a band with a color different from that of the pilfer proof band 32 (the outer peripheral surface 241 of the convex step portion 24) extends in the lateral direction in the opening region of the window portion 323. Therefore, the pilfer proof band It becomes possible to more clearly recognize and grasp that 32 is in the separated state than in the above case. For this reason, for example, even for a user with reduced visual acuity such as an elderly person, it is possible to recognize and grasp that it has been separated as a clearer visual difference, in addition to a more reliable tamper evidence function, so-called A senior friendly function can also be realized.

  Further, when each of the bridge portions 33 is broken, as shown in an enlarged cross-sectional view in FIG. 10, the protruding step portion 24 continuously protrudes radially outward from the lower surface 231 of the flange portion 23 and engages. Since the displacement of the protruding tip 341 of the claw 34 inward in the radial direction is prevented or restricted, the mouth 21 of the container body 2 does not cause the pilfer proof band 32 to fall or tilt with respect to the central axis X. Can be reliably maintained in the coaxial arrangement state, and as a result, the rotational operating force of the screw return can be applied equally to all the bridge portions 33, 33,. . That is, even if there is a radial gap between the protruding tip 341 of the engaging claw 34 and the outer peripheral surface 241 of the convex step portion 24, there is only a minute gap T1 (see also FIG. 5) of a manufacturing range. Therefore, even if the pilfer proof band 32 is pulled upward as the cap body 31 is screwed back, the protruding tip 341 only moves inward in the radial direction by the minute gap T1. While the pilfer proof band 32 is reliably maintained coaxially with respect to the central axis, the engagement claw 34 can be reliably maintained in a state of being resisted against the pulling force (shown by a one-dot chain line in FIG. 10). See pilfer proof band 32).

  On the other hand, when the bottom surface of the flange portion 23 extends radially inward to the position indicated by the two-dot chain line without the convex step portion 24, the pill fur proof band 32 is formed from the cap body 31 side. When the pulling force is received, the protruding tip 341 side of the engaging claw 34 is greatly bent as shown by a two-dot chain line in FIG. As a result, the projecting tip 341 side is reversed and separated from the lower surface of the flange portion 23, and the projecting tip 341 is pulled out above the flange portion 23, or the pilfer proof band 32 is tilted and the bridge portion 33, 33,... Will be locally broken.

  If the lower outer surface shape of the flange portion 23 is set as shown by a broken line M in FIG. 10 instead of forming the convex step portion 24, the container body 2 is formed by blow molding using a synthetic resin. Therefore, the corresponding inner surface shape is as indicated by the broken line N, and a concave portion such as a bent stepped portion may be formed between the inner surface of the mouth portion 21 and the like. In this case, if the container main body 2 after opening is tilted and an object to be accommodated is taken out, the container body 2 jumps or urges at the above-mentioned recess position, resulting in inconvenience.

  As described above, according to the present embodiment, the tamper-evidence function 1 is reliably and sufficiently realized in the tamper-evidence container 1 while adopting the pilfer-proof cap 3 suitable for mass production by integral molding using a synthetic resin. Will be able to.

<Second Embodiment>
FIG. 11 shows a tamper evidence container 1 ′ of the second embodiment. This tamper-evident container 1 'uses a pilfer-proof cap 3' that also has a so-called child resistance function. The second embodiment is different from that of the first embodiment only in that it also has a child resistance function. Other points such as realizing a reliable tamper evidence function by the other pilfer proof band 32 and the like are as follows. The same as in the first embodiment. For this reason, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and redundant description is omitted.

  The pilfer proof cap 3 ′ of the present embodiment includes a cap body 30, a pilfer proof band 32 coupled to the cap body 30 via a predetermined number of bridge portions 33, 33, and the cap body 30. And a cover cap 5 which is covered from above and held so as to be displaceable in the vertical direction. The cap main body 30 and the pilfer proof band 32 coupled to the cap main body 30 via the bridge portions 33, 33 are integrally formed by synthetic resin molding as in the case of the first embodiment. The cap body 30 includes a top plate portion 301 that can cover the upper surface opening of the mouth portion 21 of the container body 2, a peripheral wall portion 302 that hangs from the periphery of the top plate portion 301, and a bottom wall that hangs from the inner and lower surfaces of the top plate portion 301. And the annular holding | maintenance part 303 by which the seal packing 41 is externally fitted is provided. A threaded portion 304 that is screwed into the threaded portion 22 of the mouth portion 21 is formed on the inner peripheral surface of the peripheral wall portion 302, and an engaging protrusion 305 is formed on the outer peripheral surface. Further, the lower end edge 302a of the peripheral wall portion 302 is expanded so as to have a slightly larger diameter, and the first support convex portion 317 and the like are omitted from the lower end edge 302a as in the first embodiment. However, the second support convex portion is integrally formed.

  The cover cap 5 includes a top plate portion 51, a peripheral wall portion 52 that hangs down from the periphery of the top plate portion 51, and a plurality of protrusions that protrude downward at corner positions from the top plate portion 51 to the peripheral wall portion 52 on the inner surface side. (In the example shown in the figure, a total of six arranged at each position divided into six circumferential directions) engaging convex portions 53, 53,... (See also FIG. 12) and the inner and lower surfaces of the top plate portion 51. A plurality of elastic pieces (a total of three pieces arranged in each position obtained by dividing the circumferential direction into three equal parts) extending in a circumferential direction and obliquely downward from each position on a predetermined circumference centered on the central axis X Are formed by integral molding of synthetic resin. A knurled groove 521 is formed on the outer peripheral surface of the peripheral wall portion 52, and an engaging ridge 522 is formed on the inner peripheral surface so as to climb over and engage with the engaging ridge 305 on the cap body 30 side. Yes. The cover cap 5 has the engagement projections 53, 53,... Upward from a later-described recess 307, as the elastic pieces 54, 54,. .. Are held in a separated state (the state shown in FIG. 11) and pressed downward to elastically deform the elastic pieces 54, 54,..., And the engaging convex portions 53, 53,. The upper and lower portions of the engagement protrusion 305 on the cap main body 30 side and the lower end edge 302a can be slidably displaced in the vertical direction so as to be fitted in 307.

  On the top surface of the top plate portion 301 of the cap body 30, a plurality (six in the illustrated example) overpass projections at predetermined intervals on the same circumference as the elastic pieces 54, 54,. 306, 306, ... are formed so as to protrude upward. Each of the overpass projections 306 is formed with an inclined surface with respect to the circumferential direction and with respect to the screwing rotation direction of the cap body 30, and the lower ends of the elastic pieces 54, 54,. The screwing rotation operation force can be transmitted with stopping. Further, the peripheral wall portion 302 protrudes upward from the upper surface of the top plate portion 301, and concave portions 307, 307,... That are recessed downward at predetermined intervals are formed on the protruding edge. Then, when the cover cap 5 is pressed downward and the engaging convex portions 53, 53,... Are displaced downward, they are fitted into the concave portions 307 and are brought into contact with any one end in the circumferential direction. Thus, the rotational operation force can be transmitted from the cover cap 5 to the cap body 30 on either the screwing side or the screw returning side. That is, the rotational operation force in the screw return direction is formed so that it can be transmitted to the cap body 30 side only by such pressing and stopping.

  In short, the cover cap 5 is separated upward from the top plate portion 301 of the cap body 30 in the mounted state (the state shown in FIG. 11) where the engaging claws 34, 34,... Are engaged with the lower surface of the flange portion 23. In the normal state, when the cover cap 5 is rotated to the screwing side (capping side), the operating force can be transmitted, while the reverse screw return side (opening plug) as shown in FIG. Even if the elastic pieces 54 move over the overpass projections 306 from the inclined surface even if they are rotated to the side; the side; the side of the arrow in FIG. 13 (a), the cover cap 5 only idles. Become. As a result, even if an infant or child who cannot understand the reasoning of operation rotates with the cover cap 5, it cannot be opened or opened at the beginning of use after opening. Thus, the child resistance function can be realized.

  Then, by rotating the top plate portion 51 of the cover cap 5 downward while rotating it to either side in the circumferential direction, the engaging convex portion 53 is formed into any concave portion 307 as shown in FIG. When it is fitted and then rotated to the screw return side in the fitted state, the engagement convex portion 53 becomes one end in the circumferential direction of the concave portion 307 as shown in FIG. ) And the rotational operation force is transmitted to the cap body 30. As a result, the cap body 30 is unscrewed and can be opened or opened. That is, by performing a screw-back rotation operation while pressing the cover cap 5, it is possible to perform an unsealing operation from the mounted state and an unsealing operation during a normal opening / closing operation after unsealing.

<Other embodiments>
The present invention is not limited to the first or second embodiment described above, but includes other various embodiments. That is, in the above-described embodiment, the convex step portion 24 is continuously formed in the circumferential direction, but the present invention is not limited to this. Since it only needs to be able to be regulated, it may be partially divided along the way, or may be formed substantially around the entire circumference.

  Further, the inward flange portion 322 is not necessarily formed all around. You may form the inward convex part of the state which mutually separated in the circumferential direction.

  The outer peripheral surface 241 of the convex step portion 24 is not only colored in a color different from the outer surface of the pilfer proof band 32 around the window portion 323, but a pattern or the like is drawn on the outer peripheral surface 241 instead of coloring. By doing so, the outer surface 241 of the convex step portion 24 may be identified at a glance so that it can be clearly distinguished from the outer surface of the pilfer proof band 32 described above. You may make it form in the property of the rough. In short, it is only necessary to add coloring, pattern, and surface properties so that the outer peripheral surface 241 of the protruding step portion 24 is conspicuous when viewed through the window portion 323 from the outside.

  In the above embodiment, the bridge portion is shown as the weakened portion. However, the present invention is not limited to this. For example, the weakened portion may be formed of a thin wall with a temporary cut line or the like.

It is partial front explanatory drawing which shows the state before mounting | wearing with the pilfer proof cap centering on the part of the opening | mouth part of the tamper evident container of 1st Embodiment of this invention. FIG. 2 is an exploded cross-sectional explanatory view of the pilfer proof cap of FIG. 1. FIG. 3 is a cross-sectional explanatory view taken along line AA in FIG. 2. FIG. 3 is a cross-sectional explanatory view taken along line BB in FIG. 2. It is a partial expanded sectional explanatory view of the part corresponding to CC line of Drawing 6. It is a front view which shows the tamper evidence container of the mounting state which engaged the engagement nail | claw of the pilfer proof band with the flange part lower surface. FIG. 7A is a partial cross-sectional explanatory view in a state in which the protruding tip of the engaging claw is engaged with the lower surface of the flange portion. FIG. It is a partial cross section explanatory drawing of the state stopped. FIG. 8A is a partial cross-sectional explanatory view in a state in which the bridge portion is broken, and FIG. 8B is a partial cross-sectional explanatory view in a state in which the pilfer proof band is dropped after the bridge portion is broken. FIG. 7 is a view corresponding to FIG. 6 in a state in which the pilfer proof band is separated. It is a partial expanded sectional view which shows the relationship between a flange part and a convex step part, and the engaging claw of a pilfer-proof band. It is a section explanatory view partly notched about the upper part of the tamper evidence container of the second embodiment. It is sectional explanatory drawing in the DD line | wire of FIG. FIGS. 13A and 13B are cross-sectional explanatory views taken along the line EE in FIG. 12, in which FIG. 13A shows a state where the cover cap is unscrewed and rotated, and FIG. FIG. 13 (c) shows a state in which the engagement convex portion is fitted in the concave portion, and then a screw-return rotation operation is performed while pushing down the cover cap.

Explanation of symbols

1,1 'Tamper-evident container 2 Container body 3, 3' Pilfer proof cap 21 Mouth part 22 Screw part 23 Flange part 24 Convex step part 30, 31 Cap body 32 Pilfer proof band 33 Bridge part (weakening part)
34 engaging claw 231 lower surface 241 of flange portion outer peripheral surface 301, 311 of top step portion 302, 312 peripheral wall portion 322 inward flange (inward convex portion)
323 Window 341 Projection tip X of engaging claw Center axis R Margin (up-down direction interval)
H Vertical width

Claims (4)

A container body that opens at the mouth, and a pilfer proof cap that seals the mouth of the container body, and the outer peripheral surface of the mouth of the container body has a screw portion and a lower position of the screw portion. A flange portion projecting radially outward from the outer peripheral surface of the top plate portion, and the pilfer proof cap includes a top plate portion, and a peripheral wall portion hanging from the top plate portion and screwed into the screw portion of the mouth portion. A plurality of engaging claws project radially inward and obliquely upward from the inner peripheral surface coupled to the lower edge of the peripheral wall portion via a weakening portion that can be broken by receiving a shearing force in the rotational direction. The container main body and the pill fur proof cap are formed by projecting a plurality of engaging claws of the pill fur proof band by screwing the pill fur proof cap into the mouth of the container main body. tip Is elastically deformed to get over the flange part, and after it gets over, it can be restored and engaged with the lower surface of the flange part, so that the mouth part of the container body is in a closed state. A tamper-evident container,
The container body protrudes radially outward from the outer peripheral surface of the mouth portion adjacent to the lower position of the flange portion, and is radially inward of the protruding tip of the engaging claw engaged with the lower surface of the flange portion. Convex step that regulates the displacement in the direction is formed,
A tamper-evident container characterized by that. The tamper evidence container according to claim 1,
In the pilfer proof band, a window portion penetrating and opening in the inner and outer directions includes at least the protruding tip of the engaging claw, and the engaging claw and the engaging claw so that the region above the protruding tip can be visually recognized from the outside. It is formed at a corresponding position, and the inward convex portion protrudes from the inner peripheral surface at a position above the engaging claws to the inner position from the outer peripheral edge position of the flange portion inward in the radial direction. Is formed,
When the weakened portion is broken from the attached state of the pilfer proof cap and the cap body is separated from the cap main body, the pilfer proof band is vertically moved from the upper surface of the flange portion to the inward convex portion in the attached state. It is configured to be displaced downward by dropping by a dimension corresponding to the direction interval,
The tamper-evident container in which the dimension that allows the outer peripheral surface of the convex step portion to be visually recognized through the window portion between the flange portion and the projecting tip of the engaging claw due to dropping is set as the vertical interval. . A tamper evidence container according to claim 2,
The tamper-evidence container which is set so that it may become larger than the up-and-down width of the outer peripheral surface of the said convex step part as the said up-down direction space | interval. The tamper-evident container according to claim 2 or claim 3,
A tamper-evidence container provided with a color or pattern different from the outer peripheral surface of the pilfer proof band on which the window portion is formed so that the outer peripheral surface of the convex step portion can be visually identified.

Images