JP6340294B2 - container - Google Patents

Description

  The present invention relates to a container of a type having an upper lid and removing a sealing portion attached to the upper lid when the cap is opened.

  As a container, there is a container that includes a sealing portion that attaches to an extraction port in association with an upper lid, and that when used, lifts the sealing portion together with the upper lid to open or open (see, for example, Patent Document 1). In the container described in Patent Document 1, for example, on the container side, there is a portion where the screw thread is locally displaced upward. Further, on the upper lid side, a portion where the screw thread is locally displaced downward can be provided. Such a thread structure is for reducing the torque that breaks the fractured portion provided below the upper lid when the upper lid is removed from the container side. Specifically, in the portion where the screw thread is displaced upward or downward, the upper lid is locally pushed upward, and the fracture portion corresponding to such a site is fractured prior to the surrounding fracture.

  The structure of the container described in Patent Document 1 is for reducing the torque required for breaking, and when applied to a container or the like having a fitting-type sealing portion on the upper lid, the container can be opened or opened. This is insufficient to reduce the force required to remove the associated lid. Moreover, since the width | variety of the front end side of a screw thread is not uniform, when an upper cover is tightened, there exists a possibility of rattling.

Japanese Patent No. 3118726

  An object of the present invention is to provide a container having a connecting type sealing portion, which can reduce the opening force at the time of opening.

  In order to solve the above-described problems, a container according to the present invention is a container including a sealing portion that seals an extraction port from which contents in a container body are poured out or extracted, and an upper lid that covers the extraction port. The upper lid has a first threaded portion that is screwed to the container body side, supports the sealing portion, and the container body side has a second threaded portion that is threadedly engaged with the first threaded portion. The first and second threaded portions each have a multi-threaded screw, and at least one thread of the first and second threaded portions starts to tilt the upper lid when loosened. The thread width is formed to be larger than the reference width of the thread from the position where the top lid is loosened to the base side when the upper lid is loosened with respect to the container body, and at least other than the first thread among the threads of the multi-thread screw The second thread of the first thread is the thread width of the first thread from the position where the top lid starts to be tilted to the root side. It is formed to be smaller Ri, the tip end side when loosening the upper lid to the container body, the thread width of all of the thread of the multiple-thread screw substantially coincides. Here, in addition to the case where the upper lid means a single upper lid, when the upper lid is composed of the upper lid main body and another member assembled inside the upper lid main body, it means at least one of the upper lid main body and another member. To do. The container main body side means at least one of the container main body and the inner stopper when the container is composed of the container main body and the inner stopper. The first and second screwing portions are screw portions that are substantially screwed in the screws on the upper lid and the container main body side. The reference width of the thread means a predetermined thread width when it is assumed that no bulge is provided on the thread. Further, the base side when the upper lid is loosened with respect to the container main body means the side on which the screwing of the first and second screwing portions is tightened. Specifically, when the first screw thread of the upper lid bulges, it is the direction of tightening as seen from the upper lid, and when the first screw thread on the container main body bulges, tighten it as seen from the container main body. It means that it is the direction side. In addition, although the part which becomes large at the thread width is provided in the screw part which is substantially screwed together, you may provide in the formal screw part which does not affect screwing.

  In the container, by tilting the upper lid using the difference in the thread width, the local portion of the sealing portion serves as a fulcrum, and the upper lid rises with the sealing portion tilted. At this time, the position where the upper lid inclines gradually moves as it rotates, and as a result, the upper lid moves upward while swinging the frame around the rotation axis. Therefore, the loosening force at the time of opening or opening can be made relatively small against the fitting force or coupling force between the sealing portion that closes the extraction port and the extraction port. In particular, when the extraction port such as a wide-mouthed container is large, when the material of the sealing part is hard, or when the distance between the outer diameter of the upper lid and the diameter of the wall on the extraction port side in the sealing part is short, etc. However, even in the case of such a container, the opening force or the opening force can be reduced. In addition, since the thread widths of the threads on the distal end side are substantially the same, it is possible to prevent the contents in the container from leaking when there is no backlash of the upper cover when the upper cover is tightened. In particular, it is preferable that the thread widths of the starting points on the distal end sides of the first or second screwing portions 51 and 52 substantially coincide with each other.

In a specific aspect of the present invention, in the container, the large thread width portion of the first screw thread is a main bulging portion that secures the inclination of the upper lid on the one hand, and the main bulging portion is formed on the upper lid. It is provided from the position where the inclination is started to the end of the first or second threaded portion on the root side of the thread . In this case, the top cover can be tilted upper lid until as possible exit from the container.

  In another aspect of the present invention, the lower surface of the first screw thread provided in the first screwing portion bulges. In this case, the upper lid is tilted when it is loosened by making the upper lid a special shape.

  In still another aspect of the present invention, the upper surface of the first screw thread provided in the second threaded portion bulges. In this case, by making the container main body side into a special shape, the upper lid is inclined when loosened.

  In still another aspect of the present invention, at least one thread other than the first thread among the threads of the multi-thread screw has an inclination of the upper lid on the distal end side when the upper lid is loosened with respect to the container body. It has an auxiliary bulging part to adjust. In this case, the inclination state of the upper lid can be controlled, for example, by reducing the inclination of the upper lid in cooperation with other screw threads.

In yet another aspect of the present invention, the main bulge is provided on a screw thread that is less than half of the total number of threads of the multi-thread screw. In this case, the upper lid can be efficiently inclined at the time of opening or opening.

  In still another aspect of the present invention, the diameter of the wall on the extraction port side of the sealing portion is ½ or more and less than 1 of the diameter of the outer wall of the upper lid. Even if the sealing part is relatively large, the first lid thread is formed so that the thread width is large within a predetermined range, so that the force that lifts the sealing part locally is concentrated by tilting the upper lid. Therefore, the opening force or the opening force can be reduced.

  In still another aspect of the present invention, the sealing portion has an engaging portion on the upper periphery, and the upper lid is suspended from the lower surface of the ceiling wall and can accommodate the periphery of the engaging portion; A projecting portion that projects to the inner peripheral surface and restrains the engaging portion within the annular wall.

  In still another aspect of the present invention, an inner plug having an extraction port is provided, and the second screwing portion is provided in at least one of the container main body and the inner plug.

  In still another aspect of the present invention, the sealing portion is connected to the extraction port portion forming the extraction port via the cutting portion. In this case, the cutting part is pulled up locally by inclining the upper lid when opening the plug, and the cutting force for separating the cutting part can be reduced.

  In still another aspect of the present invention, the upper lid has an annular member that is provided through the breaking portion before the opening operation and remains on the container body side after the opening operation. In this case, the breaking part is pulled up locally by inclining the upper lid when opening the plug, and the breaking force for separating the breaking part can be reduced.

  In still another aspect of the present invention, the position at which the upper lid starts to be tilted is at least one of when the sealing portion starts to be displaced with respect to the extraction port and when it is displaced.

  In still another aspect of the present invention, the position at which the upper lid starts to be tilted is at least one of when the rupture portion is broken and when it is broken.

It is sectional drawing which showed the principal part of the container which concerns on 1st Embodiment, and respond | corresponds to the II cross section in Fig.2 (a). It is a conceptual explanatory drawing explaining the shape of the screw in a container, (a) shows the starting point and end point of four male screws, and (b) shows the section shape of those screws. The inclination state of the lid | cover at the time of opening of the container of 1st Embodiment is shown, and it respond | corresponds to the II-II cross section in Fig.2 (a). It is sectional drawing which showed the principal part of the container which concerns on 2nd Embodiment, and respond | corresponds to the IV-IV cross section in Fig.5 (a). It is a conceptual explanatory drawing explaining the shape of the screw in a container, (a) shows the starting point and end point of four female screws, and (b) shows the section shape of those screws. The inclination state of the lid | cover at the time of opening of the container of 2nd Embodiment is shown, and it respond | corresponds to the VV cross section in Fig.5 (a). (A) And (b) is a figure explaining the modification of the container shown in FIG. (A) And (b) is a figure explaining the modification of the container shown in FIG. It is sectional drawing explaining the modification of a container. It is sectional drawing explaining another modification of a container. It is sectional drawing explaining another modification of a container.

[First Embodiment]
With reference to FIG. 1 thru | or FIG. 3, 1st Embodiment of the container which concerns on this invention is described.

  As shown in FIG. 1, the container 1 of 1st Embodiment is provided with the container main body 10 which is a bottle, and the upper cover 20 screwed by the extraction port 11b of the container main body 10. As shown in FIG. A first screwing portion 51 and a second screwing portion 52 are respectively formed on the upper lid 20 and the container body 10, and both the screwing portions 51 and 52 are engaged with each other by tightening or screwing. The upper lid 20 can be detachably fixed to the container body 10. Here, the 1st and 2nd screwing parts 51 and 52 are screw parts 5a in which both are substantially screwed in screw 21 and 12 of upper lid 20 and container main part 10. Therefore, although it is different from the case of illustration, the part where the screws 21 and 12 extend outside the screw part 5a is only a formal screw part and is not included in the first and second screwing parts 51 and 52. And

  The container body 10 is a bottomed cylindrical molded product formed of synthetic resin, glass, metal, or the like, and the upper extraction port 11b has a cylindrical shape. And the external thread 12 is formed in the outer peripheral surface of the extraction port 11b as the 2nd screwing part 52. As shown in FIG. The male screw 12 is composed of a plurality of screw threads 12a, which are multi-threaded screws, specifically, for example, four thread threads 12a. That is, the lead of the male screw 12 is four times the pitch.

  An annular locking portion 13 is formed in the extraction port 11b of the container main body 10 on the outer peripheral surface below the male screw 12 so as to project radially outward. The outer peripheral surface below the annular locking portion 13 is radially outward. An annular receiving portion 14 is formed so as to extend to the surface.

  The upper lid 20 is an integrally molded product made of resin, and includes a peripheral wall 20a and a ceiling wall 20b. A female screw 21 that is screwed into the male screw 12 of the container body 10 is formed as a first screwed portion 51 on the inner peripheral surface of the peripheral wall 20a. The upper lid 20 covers the extraction port 11b of the container body 10 and protects it from the external environment such as dust and water. The female screw 21 has a shape corresponding to the male screw 12 in terms of pitch and leads. That is, the female screw 21 includes a plurality of screw threads 21a that are multi-threaded screws, and specifically includes, for example, four screw threads 21a.

  On the inner surface side of the ceiling wall 20 b of the upper lid 20, a sealing portion 27 for sealing the extraction port 11 b of the container body 10 is fixed as a part of the upper lid 20. The sealing part 27 includes a plate-like body 27a and an annular wall 27b. The plate-like body 27a is fixed to the ceiling wall 20b so as to contact the ceiling wall 20b. The outer edge portion 27f of the plate-like body 27a is fixed so as to be fitted into a recessed portion 29b formed between the protruding portion 29a and the ceiling wall 20b by an annular protruding portion 29a extending from the upper end of the peripheral wall 20a toward the center in the radial direction. Has been. The annular wall 27b is suspended from the lower surface of the plate-like body 27a. The annular wall 27b is formed substantially in parallel with the rotation axis AX of the upper lid 20, and is formed so that the wall thickness becomes thinner toward the lower end. The outer surface of the annular wall 27b is a cylindrical surface 27p on the base side, and a tapered surface 27q is provided at the tip. In a state where the upper lid 20 is tightened and the sealing portion 27 is fitted into the extraction port 11b of the container body 10, the cylindrical surface 27p of the annular wall 27b is in close contact with the inner wall surface 17p of the upper end portion 17 of the extraction port 11b. In addition, although the protrusion part 29a of embodiment is the cyclic | annular processus | protrusion formed over the perimeter along the inner surface of the surrounding wall 20a, even if formed locally along the inner surface of the surrounding wall 20a, Good.

  Hereinafter, the direction regarding the 1st and 2nd screwing parts 51 and 52 is explained. With respect to the first threaded portion 51 or the female screw 21, the AB direction corresponding to the downward direction on the paper surface is a tightening direction as viewed from the upper lid 20, and the CD direction corresponding to the upward direction on the paper surface is from the upper lid 20. The direction is to relax. On the other hand, with respect to the second threaded portion 52 or the male screw 12, the CD direction is a tightening direction when viewed from the container body 10, and the AB direction is a loosening direction when viewed from the container body 10.

  Below, the operation | work of the assembly | attachment of the upper cover 20 to the container main body 10, and the opening operation | movement of the container 1 in which they were assembled are demonstrated.

  First, after injecting a liquid into the container body 10, the upper lid 20 is attached so as to be screwed into the extraction port 11b. At this time, the female screw 21 of the upper lid 20 is screwed into the male screw 12 of the container body 10, and the annular locking portion 24 formed to be bent inward at the lower end of the peripheral wall 20 a of the upper lid 20 is formed into the annular locking portion of the container main body 10. The upper lid 20 is locked to the container body 10 by engaging with the container 13. The container 1 in this state is accommodated by fitting the sealing portion 27 of the upper lid 20 into the upper end of the extraction port 11b of the container body 10, thereby sealing the extraction port 11b.

  When taking out the contents from the container 1 in this state, first, the upper lid 20 is rotated in the loosening direction, that is, counterclockwise. When the upper lid 20 is rotated in the loosening direction, the upper lid 20 starts to rise with respect to the container body 10, and the details will be described later, but the sealing portion 27 of the upper lid 20 begins to come out from the extraction port 11b of the container body 10 while being inclined. . In parallel with this, the annular locking portion 24 of the upper lid 20 also starts to rise, but is prevented from rising by the annular locking portion 13 of the container body 10 in the middle. When the upper lid 20 is further raised, the fracture portion H provided immediately above the annular locking portion 24 is broken. The annular member 25 including the broken annular locking portion 24 is left on the annular receiving portion 14. When the upper lid 20 is further rotated in the loosening direction, the sealing portion 27 is completely removed from the extraction port 11b of the container body 10. Thereafter, the upper lid 20 is free to rotate in the loosening direction. Thus, if the upper lid 20 is completely loosened and removed from the extraction port 11b, the extraction port 11b is opened, the extraction port 11b is exposed, and the container 1 is opened. That is, the liquid in the container main body 10 can be poured out from the extraction port 11b.

  In addition, when the upper lid 20 is again attached to the extraction port 11b of the container body 10 and tightened in order to plug the container body 10, the sealing portion 27 of the upper lid 20 is fitted into the extraction port 11b of the container body 10. Thereby, the extraction port 11b is sealed.

  Hereinafter, a method for temporarily tilting the upper lid 20 when the upper lid 20 is loosened and opened or opened with reference to FIGS. 2 (a) and 2 (b) will be described. In the container 1 of the above-described embodiment, the second screwing portion 52 or the male screw 12 provided in the container body 10 includes four threads 12a. The thread 12a that is substantially screwed with each strip is, for example, 90 ° apart from the start point to the end point, approximately 180 ° around the rotation axis AX (substantially effective screw winding angle of the screwing screw portion). have. That is, as shown in FIG. 2A, the range of the angles θ1, θ2, θ3, θ4 from the starting point or the lower end of the thread 12a that is substantially screwed to each of the strips is 0 ° to 180 °. Yes.

  And the thread 12a (first thread) of the first thread of the male thread 12 that is substantially screwed is from the start point (the tip side or the lower side when loosened when viewed from the container body 10) to the end point (container). The main bulging portion 16a is provided up to the base side when loosened when viewed from the main body 10, and the upper surface, that is, the surface in the CD direction side (the tightening direction when viewed from the container main body 10) bulges. The thread 12a of the first article has a thread width larger than the reference width of the thread 12a from the position where the inclination of the upper lid 20 is started when loosened to the base side when the upper lid 20 is loosened with respect to the container body 10. It is formed as follows. In the present embodiment, the position at which the inclination of the upper lid 20 is started is a position immediately before the sealing portion 27 starts to be displaced upward with respect to the extraction port 11b. Specifically, the position at which the inclination of the upper lid 20 is started is, for example, a position of 30 ° beyond the adjacent position (angle α ° described later) of the starting point. The main bulging portion 16a is 1 mm when the thread width of the thread 12a is 2 mm, for example, from the lower end to the upper end with respect to the reference spiral trajectory that rises at a uniform pitch when viewed from the container body 10. It is formed in a shape displaced in the CD direction, that is, in the upward direction by an amount of bulging. That is, the first thread 12a is in a state where the thickness in the direction of the rotation axis AX is increased as a whole in the range from the start point of the lower end to the end point of the upper end.

  In addition, the thread 12a that is substantially screwed in the second thread of the male screw 12 is located at a position (an angle β to be described later) that has reached an appropriate loosening amount from the starting point (the tip side when loosening when viewed from the container body 10). ), And the upper surface, that is, the surface on the CD direction side (the direction of tightening as viewed from the container body 10) bulges. The second thread 12a is formed so that the thread width is the same as that of the first thread 12a from the position at which the upper lid 20 starts to be tilted to a predetermined position. The thread width is smaller than the thread width of the first thread 12a up to the base side when the container 20 is loosened with respect to the container body 10. Specifically, the position at which the inclination of the upper lid 20 is started is, for example, a position of 30 ° beyond the adjacent position (angle α ° described later) of the starting point. The auxiliary bulging portion 16b extends from the starting point of the lower end to a substantially intermediate point (angle β °, specifically about 70 ° to 90 °) with respect to the reference spiral trajectory that rises at a uniform pitch when viewed from the container body 10. For example, the thread width of the thread 12a is 2 mm, and the thread 12a is formed in a shape displaced by an amount of bulging of about 1 mm in the CD direction, that is, upward. That is, the second thread 12a is in a state where the thickness in the direction of the rotation axis AX is increased in the range from the starting point of the lower end to the substantially intermediate point. In addition, about the 2nd thread 12a, the main bulging part 16a can be provided to an end point similarly to the 1st thread 12a, or the auxiliary | assistant bulging part 16b can also be provided only in the start point vicinity. . However, when the second thread 12a has the auxiliary bulging portion 16b up to a substantially middle point as shown in the drawing, the rotation of the upper lid 20 can be made relatively smooth.

  Further, the third and fourth thread threads 12a (second thread threads) that are substantially screwed in the male thread 12 are adjacent to the starting point (the tip side when loosened when viewed from the container body 10). The initial bulging portion 16c is provided up to a position (angle α ° described later), and the upper surface, that is, the surface on the CD direction side (the tightening direction side when viewed from the container body 10) bulges. In other words, the thread 12a of the third and fourth articles has a thread width of the first thread from the position where the inclination of the upper lid 20 is started to the root side when the upper lid 20 is loosened with respect to the container body 10. It is formed to be smaller than the thread width of 12a. The initial bulging portion 16c is adjacent to the reference spiral trajectory that rises at a uniform pitch when viewed from the container body 10 from the starting point of the lower end (angle α °, specifically about 0 ° to several tens of degrees). Up to, for example, the thread width of the thread 12a is 2 mm, and the thread 12a is shaped into a shape displaced in the CD direction, that is, upward by an amount of bulge of about 1 mm. That is, the third and fourth thread 12a are in a state where the thickness in the direction of the rotation axis AX is increased in the vicinity of the starting point of the lower end.

  As described above, the ridges 16a, 16b, and 16c appear in the first to fourth thread 12a in the state where the thickness in the direction of the rotation axis AX increases in the vicinity of the starting point of the lower end. The thickness of the third and fourth thread 12a in the direction of the rotation axis AX returns to the standard value, reaches a substantially intermediate point, and the thickness of the second thread 12a in the direction of the rotation axis AX returns to the standard value. The second to fourth thread 12a other than the first thread 12a having the main bulging portion 16a is formed at the tip, that is, at the start point side when the upper lid 20 is loosened with respect to the container body 10. The thread width is substantially coincident with the first thread 12a. Further, the second to fourth thread 12a maintains the reference width of the thread 12a on the base side when the container 12 is loosened. The bulging amounts of the three bulging portions 16a, 16b, and 16c are desirably equal to each other from the viewpoint that the upper lid 20 does not tilt with the upper lid 20 tightened. In addition, at the end of the bulging portions 16a, 16b, and 16c, it is desirable that the amount of bulging gradually decrease from the viewpoint of ensuring smooth rotation of the upper lid 20.

  The main bulging portion 16a described above is formed up to the end point of the second screwing portion 52, whereas the auxiliary bulging portion 16b is for adjusting the inclination of the upper lid 20 and reaches the end point. It is not formed but is formed up to a predetermined range. Further, the initial bulging portion 16c is for aligning the thread width of the starting point of the second screwing portion 52 to prevent the upper cover 20 from being inclined, and bulges in the vicinity of the starting point of the first thread 12a. If the part is not formed, it is not formed. When the main bulging portion 16a is formed from the starting point of the second threaded portion 52 in the first thread 12a, the auxiliary bulging portion 16b in the vicinity of the starting point has the same function as the initial bulging portion. Have

  In the container 1 of the present embodiment, the thread 21a of the female screw 21 provided on the upper lid 20 or the lower surface 21m of the female screw 12 (container) in the initial stage of rotating the upper lid 20 in the loosening direction for opening. The screw threaded while abutting against the bulging surfaces (upper surface 12f) of the bulging portions 16a, 16b, 16c of the first to fourth thread 12a bulging upward of the main body 10. As described above, since all the female screws 21 provided on the upper lid 20 are supported by the first to fourth thread 12a bulging uniformly, the upper lid 20 is sealed when the upper lid 20 is tightened. The sealing effect by the part 27 can be enhanced.

  In the subsequent opening stage, the lower surface 21m of the screw thread 21a of the female screw 21 provided on the upper lid 20 bulges toward the upper side of the container body 10 of the male screw 12, and the first and second thread threads. 12a, the lower surface 21m of the third and fourth thread 21a is in contact with the reference surface 12k of the reference spiral trajectory (the upper surface 12f). 1 and the like, the upper lid 20 is inclined to the lower right by an angle δ °, as shown in FIG. In FIG. 3, S1 indicates the position of the ceiling wall 20b when the upper lid 20 is not inclined, and S2 indicates the position of the ceiling wall 20b when the upper lid 20 is inclined. In the case of this embodiment, since the auxiliary bulging portion 16b is provided in the second thread 12a to the position of the angle β °, the inclination of the upper lid 20 increases from around the position of the angle β °. Since the upper lid 20 begins to rotate at the position of the angle α ° since the upper lid 20 starts to rotate, the range of the rotation angle θ when the upper lid 20 is inclined is α ≦ θ ≦ 180 °.

  At the opening stage, the sealing portion 27 fixed to the upper lid 20 is raised as the upper lid 20 is raised, and the sealing portion 27 is gradually pulled out from the extraction port 11b of the container body 10. At this time, not only the upper lid 20 is inclined, but the inclination direction of the upper lid 20 gradually changes with the rotation of the upper lid 20 with reference to the container body 10. That is, if the upper lid 20 is exaggerated, it operates like a swing motion (precession motion) of the top around the rotation axis AX, and the sealing portion 27 performs the swing motion of the top as well. . Thereby, the operation | movement which pulls out the sealing part 27 from the extraction port 11b becomes comparatively smooth, and the opening which pulls out the sealing part 27 with few resistances is attained. In addition, when the upper lid 20 is inclined, a portion where the ceiling wall 20b of the upper lid 20 is highest with respect to the position S1 of the ceiling wall 20b in a state where the upper lid 20 is not inclined (a portion where the apex of the inclination appears) is shown in FIG. As shown to (a), it changes gradually in order of area | region AR1-AR3. The fulcrum of the sealing portion 27 gradually rises in the order of the point-symmetrical regions AR <b> 1 to AR <b> 3 and rises while inclining.

  Further, in the stage of opening the plug, in addition to the force for pulling out the sealing portion 27, a force for separating the annular member 25 from the upper lid 20 is required. When the annular member 25 is separated, the top lid 20 swings the frame around the rotation axis AX, so that the breaking portion H spreads so as to move, and the operation of separating the annular member 25 at the breaking portion H becomes easy. . That is, it is relatively easy to open or open the upper lid 20 from the viewpoint of pulling out the sealing portion 27 and from the viewpoint of separating the annular member 25.

  According to the container 1 described above, by tilting the upper lid 20 using the difference in thread width, the upper lid 20 is tilted with the local portion of the sealing portion 27 serving as a fulcrum and the sealing portion 27 tilted. Rises. At this time, the position where the upper lid 20 inclines gradually moves with the rotation, and as a result, the upper lid 20 moves up while swinging the frame around the rotation axis AX. Therefore, the loosening force at the time of opening or opening can be made relatively small against the fitting force between the sealing portion 27 that closes the extraction port 11b and the extraction port 11b. In particular, when the extraction port 11b such as a wide-mouthed container (the diameter of the wall of the sealing unit 27 on the side of the extraction port 11b is 1/2 or more and less than 1 of the outer wall diameter of the upper lid 20) is large, the material of the sealing unit 27 is In the case where it is hard, when the distance between the outer diameter of the upper lid 20 and the diameter of the annular wall 27b in the sealing portion 27 is short, a large opening force or opening force is required for opening and the like. Even in the case of a simple container, the opening force or the opening force can be reduced. Moreover, since the screw thread width of the screw thread 12a at the front end side substantially matches, it is possible to prevent the contents in the container 1 from leaking when the upper cover 20 is tightened and the upper cover 20 is not rattled.

[Second Embodiment]
Hereinafter, the container of 2nd Embodiment is demonstrated. The container 1 of the second embodiment is a partial modification of the container 1 of the first embodiment, and matters not particularly described are the same as those of the container 1 of the first embodiment. In the first embodiment shown in FIGS. 2 and 3, the upper surface of some of the threads 12a of the male thread 12 of the container body 10 is threaded 12a so that the upper lid 20 is tilted. In the second embodiment, the roles of the male screw 12 on the container body 10 side and the female screw 21 on the upper lid 20 side are interchanged.

  As shown in FIGS. 4 and 5, in the case of the second embodiment, the lower surface of the thread 21 a of the female screw 21 provided on the upper lid 20 is bulged. The thread 21a to be substantially screwed in the first article is mainly from the start point (the tip side or upper side when loosened when viewed from the upper lid 20) to the end point (the root side or lower side when loosened when viewed from the upper lid 20). It has a bulging portion 26a, and the lower surface, that is, the surface on the AB direction side (the side tightened when viewed from the upper lid 20) bulges. The thread 12a of the first article has a thread width larger than the reference width of the thread 12a from the position where the inclination of the upper lid 20 is started when loosened to the base side when the upper lid 20 is loosened with respect to the container body 10. It is formed as follows. In this embodiment, the position where the inclination of the upper lid 20 is started is a position immediately before the sealing portion 27 starts to be displaced with respect to the extraction port 11b. Specifically, the position at which the inclination of the upper lid 20 is started is, for example, a position of 30 ° beyond the adjacent position (angle α ° described later) of the starting point.

  In addition, the thread 21a of the female thread 21 that is substantially screwed into the second thread 21 is located at a position (for example, an angle β °) that has reached an appropriate loosening amount from the starting point (the tip side when loosened when viewed from the top cover 20). ), And the lower surface, that is, the surface on the AB direction side (the side tightened when viewed from the upper lid 20) is bulged.

  Further, among the female screws 21, the thread 21a that substantially engages with the third and fourth threads is adjacent to the starting point (the tip side when loosened when viewed from the top cover 20) (for example, the angle α °). Up to this point, it has an initial bulging portion 26c, and the lower surface, that is, the surface on the AB direction side (the direction to be tightened when viewed from the upper lid 20) bulges.

  As described above, in the first to fourth thread 21a, the bulging portions 26a, 26b, and 26c appear in a state where the thickness in the direction of the rotation axis AX is increased in the vicinity of the starting point of the upper end. The thickness of the third and fourth thread 12a in the direction of the rotation axis AX returns to the standard value, reaches a substantially intermediate point, and the thickness of the second thread 12a in the direction of the rotation axis AX returns to the standard value.

  In the container 1 of the present embodiment, the thread 12a of the male screw 12 provided on the container body 10 or the upper surface 12f of the female screw 21 (all the female screws 21 ( The screw threaded while abutting against the bulging surfaces (lower surface 21m) of the bulging portions 26a, 26b, 26c of the first to fourth thread 21a bulging downward from the upper lid 20. Thus, since all the male screws 12 provided on the container body 10 are supported by the first to fourth thread 21a bulging evenly, the upper lid 20 is free from rattling when the upper lid 20 is tightened. The sealing effect by the stop part 27 can be enhanced.

  At the subsequent opening stage, the upper surface 12f of the thread 12a of the male screw 12 provided on the container body 10 bulges toward the lower side of the upper lid 20 of the female screw 21, and the first and second thread threads. While screwing while abutting against the bulging surfaces (lower surface 21m) of the bulging portions 26a and 26b of 21a, the upper surface 12f of the other third and fourth thread 12a is the reference surface 21k ( 4 and the like, the upper lid 20 is inclined downwardly by an angle δ ° to the lower left as shown in FIG.

  At the opening stage, the sealing portion 27 fixed to the upper lid 20 is raised as the upper lid 20 is raised, and the sealing portion 27 is gradually pulled out from the extraction port 11b of the container body 10. At this time, not only the upper lid 20 is inclined, but the inclination direction of the upper lid 20 gradually changes with the rotation of the upper lid 20 with reference to the container body 10. That is, if exaggerated, the upper lid 20 operates like a swinging motion of the top around the rotation axis AX, and the sealing portion 27 also performs the swinging motion of the top while similarly rising. Thereby, the operation | movement which pulls out the sealing part 27 from the extraction port 11b becomes comparatively smooth, and the opening which pulls out the sealing part 27 with few resistances is attained. In addition, as shown to Fig.5 (a), the site | part where the upper cover 20 becomes the highest changes gradually in order of area | region AR1-AR3.

  Although the present invention has been described above according to the embodiment, the present invention is not limited to the above embodiment. For example, the pitches and leads of the screw threads 21a and 12a constituting the first and second screwing portions 51 and 52 can be appropriately adjusted and changed according to the purpose and use of the container 1. That is, the 1st and 2nd screwing parts 51 and 52 can be made into the thread configuration of 2, 3, or 5 or more threads.

  In the above embodiment, the upper lid 20 starts to be tilted immediately before the sealing portion 27 is displaced with respect to the extraction port 11b. However, when the sealing portion 27 is displaced, the upper portion is broken immediately before the breaking portion H is broken. The tilt may be started when

  In the said embodiment, the way of the main bulging parts 16a and 26a, auxiliary | assistant bulging parts 16b and 26b, and the initial bulging parts 16c and 26c can be changed suitably. For example, as shown to Fig.7 (a) and 8 (a), it can be set as the structure where the screw threads 12a and 21a do not bulge in 0 degrees-angle (alpha) degrees. In this case, the first thread 12a has a main bulging portion 16a from the position adjacent to the start point (for example, 30 °) to the end point, and the second to fourth thread 12a extends from the start point to the end point. Does not have a bulge. Further, as shown in FIGS. 7B and 8B, the auxiliary bulging portions 16b and 26b provided on the second thread 12a and 21a in the first and second embodiments are replaced with the fourth thread. You may provide in the mountains 12a and 21a. In this case, the inclination becomes stronger from around the position of the angle β °.

  In the said embodiment, if it is the structure which loosens the upper cover 20 at the time of opening, structures, such as the container 1 and the upper cover 20, can be changed suitably. For example, as shown in FIGS. 9 and 10, the container 1 may further include an inner plug 70. Specifically, as shown in FIG. 9, the container 1 has an inner plug 70 attached to the mouth portion 15 of the container body 10 (see, for example, JP 2012-46209 A). The inner plug 70 includes a first member 71 fitted on the container body 10 side and a second member 72 fitted on the upper lid 20 side. The first member 71 has a second screwing portion 52, and the second screwing portion 52 is screwed with the first screwing portion 51 of the upper lid 20. The second member 72 is fitted so as to close the opening of the first member 71. The second member 72 has a cutting portion K. In the container 1 shown in FIG. 9, the upper portion of the second member 72 of the inner plug 70 is cut by the cutting portion K, whereby the sealing portion 27 is formed. When the container 1 is rotated in the direction of loosening the upper lid 20 with respect to the container body 10 (opening operation), the cutting portion K of the inner plug 70 is cut by the operation. Further, as shown in FIG. 10, a third screwing portion 81 and a fourth screwing portion 82 are provided in the sealing portion 27 of the upper lid 20 and the inner plug 70, respectively, and the third and fourth screwing portions 81 and 82 are provided. May be screwed to support the sealing portion 27 on the upper lid 20 (for example, International Publication No. 2007/126062). The inner plug 70 includes an inner plug main body 75 and a sealing portion 27, and the sealing portion 27 is connected to the extraction port portion 76 via a cutting portion K. The sealing part 27 is formed by cutting the cutting part K, and is supported by the upper lid 20 after opening. As another example of the container, as shown in FIG. 11, the container 1 may have a structure in which the extraction port portion 80 of another member is integrated with the container body 10 by fusion or the like without providing an inner stopper. (For example, refer to JP 2007-39043 A). In the container 1 shown in FIG. 11, the sealing part 27 is connected to the inside of the extraction port part 80 via the cutting part K before opening. Further, the sealing portion 27 is provided with an engaging portion 27g on the upper peripheral edge. The upper lid 20 is provided with an annular wall 20d that is suspended from the lower surface of the ceiling wall 20b and can accommodate the periphery of the engaging portion 27g. The engaging portion 27g is provided on the inner peripheral surface of the annular wall 20d. Protruding part 20e restrained inside is provided. The sealing part 27 is formed by cutting the cutting part K provided inside the extraction port part 80, and is supported by the upper lid 20 after being opened. A concave portion 20f formed by a peripheral wall 20a and an inner cylindrical portion 20g is formed on the inner peripheral edge of the upper lid 20, and in close-up state of the upper lid 20, the upper lid 20 is in close contact with the upper end of the extraction port portion 80 and sealed. The container 1 can be sealed together with the stopper 27. That is, the cylindrical part 20g has a function as a sealing part. The extraction port portion 80 is provided with a second screwing portion 52. A broken portion H is provided at the lower portion of the upper lid 20. When the container 1 is rotated in the direction of loosening the upper lid 20 with respect to the container body 10 (opening operation), the cutting portion K of the extraction port portion 80 and the breaking portion H of the upper lid 20 are cut or broken by the operation. In addition, the container 1 demonstrated above can also reduce the force (connection force) which inclines the upper cover 20 also at the time of the cutting | disconnection of the cutting | disconnection part K, and cut | disconnects the cutting | disconnection part K. FIG. Moreover, in the container 1 shown in FIG. 11, the force which loosens with respect to the fitting force of the recessed part 20f and the extraction port 11b can be reduced.

  In the said embodiment, the upper cover 30 may be comprised with the separate member assembled | attached inside the upper cover main body and the upper cover main body. In this case, the 1st screwing part 51 is provided in at least one of an upper cover main body and another member. Moreover, you may provide the protrusion etc. which support the sealing part 27 in another member. Further, the upper lid 30 and the sealing portion 27 may be an integral member.

In the above embodiment, the main bulging portions 16a and 26a are provided on the single thread 12a and 21a. However, the thread 12a is less than half of the total number of the multiple threads 12a and 21a. , 21a.

  In the said embodiment, in the range which does not affect the inclination of the upper cover 30, a thread may not be continuous but may be cut off partially.

  In the above embodiment, the range of the rotation angle θ shown in FIGS. 2 and 5 is an example, and can be changed as appropriate.

  In the above embodiment, when at least one thread 12, 21 reaches a predetermined tightening amount in any one of the first and second screwing portions 51, 52, the inclination of the upper lid 20 is started. You may provide the bulging part which bulges to the base side at the time of tightening the upper cover 20 with respect to the container main body 10 from a position. In this case, the upper lid 20 can be tightened with a relatively small force.

  In the above description, it is preferable that the thread for providing the bulging portion is provided with the bulging portion 16a and the like on the container main body 10 side in consideration of the process of removing from the mold when the container main body 10 and the upper lid 20 are molded.

  In the above embodiment, the effective screw winding angle a from the start point to the end point of the threads 12a, 21a is 180 °, but may be less than 180 ° or 180 ° or more. When the effective screw winding angle a from the start point to the end point is less than 180 °, the auxiliary bulging portions 16b and 26b are −180 ° from the start point (0 °) of the first thread thread, that is, 180 ° to 360 °. (An angle when the starting point of the thread of the first article is 0 °) is not provided. On the other hand, as long as it is within a range of 180 ° from the starting point (0 °) of the first thread, the auxiliary bulging portion may be provided not only on the second thread but also on the third or fourth thread. That is, when the range of the effective screw winding angle a is 0 ° ≦ a <180 °, the auxiliary bulging portions 16b and 26b are 0 ° when the start point of the first thread is 0 ° (or as a reference). Although it may be in the range of ≦ b <180 °, it is not provided in the range of 180 ° ≦ b <360 °. Further, when the effective screw winding angle a from the start point to the end point is 180 ° or more, the auxiliary bulging portions 16b and 26b are not provided within a range of 180 ° from the end point of the first thread. On the other hand, if it is the range of -180 degrees from the end point of the thread of the 1st article, you may provide an auxiliary bulging part in the 2nd article, the 3rd article, or the 4th article. That is, when the range of the effective screw winding angle a is 180 ° ≦ a, the auxiliary bulging portions 16b and 26b satisfy −180 ° ≦ b <0 ° when the end points of the screw threads 12a and 21a are set to 0 °. Although it may be in the range, it is not provided in the range of 0 ° ≦ b <180 °. Here, it is assumed that the angle is positive in the counterclockwise direction. The above-mentioned auxiliary bulging portion may be provided to the last, and the upper lid 20 is easier to tilt and open more easily if the auxiliary bulging portion is not provided excessively.

  DESCRIPTION OF SYMBOLS 1 ... Container, 10 ... Container main body, 11b ... Extraction port, 12 ... Male screw, 12a, 21a ... Screw thread, 12f ... Upper surface, 12k, 21k ... Reference surface, 20 ... Top lid, 20b ... Ceiling wall, 21 ... Female screw 12a, 21a ... thread, 21m ... bottom surface, 24 ... annular locking part, 25 ... annular member, 16a, 26a ... main bulging part, 16b, 26b ... auxiliary bulging part, initial bulging part ... 16c, 26c 27 ... Sealing part, 27b ... Annular wall, 29a ... Projection part, 30 ... Upper lid, 51 ... First screwing part, 52 ... Second screwing part, 70 ... Inner plug, H ... Breaking part, K ... Cutting Part

Claims (13)

A sealing portion that seals the extraction port from which the contents in the container body are extracted;
An upper lid covering the extraction port;
A container comprising:
The upper lid has a first screwing portion to be screwed to the container body side, and supports the sealing portion,
The container body side has a second threaded portion that is threadedly engaged with the first threaded portion,
The first and second threaded portions each have a multi-threaded screw,
In any one of the first and second threaded portions, at least one of the first threads is when the upper lid is loosened with respect to the container body from a position where the upper lid starts to be inclined when loosened. It is formed so that the thread width is larger than the reference width of the thread up to the base side,
Among the threads of the multi-threaded screw, at least one second thread other than the first thread has a thread width from the position at which the upper lid starts to be tilted to the root side. Formed to be smaller than the thread width of the thread,
The container characterized in that the thread widths of all the threads of the multi-thread screw substantially coincide with each other on the distal end side when the upper lid is loosened with respect to the container body. The large portion of the first thread width of the first thread is a main bulge portion that secures the inclination of the upper lid on the one hand,
2. The container according to claim 1, wherein the main bulging portion is provided from a position at which the inclination of the upper lid is started to a terminal end of the first or second screwing portion on a root side of the screw thread.   The container according to any one of claims 1 and 2, wherein the first screw thread provided in the first threaded portion bulges on the lower surface of the screw thread.   3. The container according to claim 1, wherein an upper surface of the first screw thread provided in the second screwing portion bulges out.   Among the threads of the multiple threads, at least one thread other than the first thread is an auxiliary bulge that adjusts the inclination of the upper lid on the tip side when the upper lid is loosened with respect to the container body. The container according to any one of claims 1 to 4, further comprising a protruding portion. The container according to any one of claims 2 to 5, wherein the main bulging portion is provided on a screw thread of half or less of the total number of threads of the multi-threaded screw.   7. The container according to claim 1, wherein the diameter of the wall on the extraction port side of the sealing portion is ½ or more and less than 1 of the diameter of the outer wall of the upper lid. . The sealing part has an engaging part on the upper periphery,
The upper lid is suspended from the lower surface of the ceiling wall and is capable of accommodating the periphery of the engaging portion; and a protruding portion that protrudes from the inner peripheral surface of the annular wall and restrains the engaging portion within the annular wall. The container according to any one of claims 1 to 7, characterized by comprising: An internal stopper having the extraction port;
The container according to any one of claims 1 to 8, wherein the second screwing portion is provided in at least one of the container main body and the inner stopper.   The container according to any one of claims 1 to 9, wherein the sealing portion is connected to an extraction port portion forming the extraction port via a cutting portion.   The said upper cover is provided through a fracture | rupture part before opening operation | movement, and has an annular member which remains on the said container main body side after opening operation | movement, It is any one of Claim 1-10 characterized by the above-mentioned. Container.   12. The position according to claim 1, wherein the position at which the inclination of the upper lid is started is at least one of when the sealing portion starts to be displaced with respect to the extraction port and when it is displaced. A container according to claim 1.   The container according to claim 11, wherein the position at which the upper lid starts to be tilted is at least one of when the rupture portion is broken and when it is broken.

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