JP6285313B2 - container - Google Patents

Description

  The present invention relates to a container of a type in which an upper lid is tightened before opening or at the time of opening.

  As a container, there is an inner plug having a separating portion, and in use, the separating portion is separated from the inner plug main body by the upper lid, and the separating portion is removed from the inner plug main body together with the upper lid while leaving the inner plug main body in the container main body. (For example, refer to Patent Document 1). In the container of this patent document 1, the upper lid is tightened into the opening of the bottle to cut the cutting portion connecting the inner plug main body and the separation portion, and thereby the separation portion separated from the inner plug main body. Is held by the protruding portion of the annular wall extending downward from the inner surface of the ceiling wall of the upper lid (see FIGS. 7 and 8 of Patent Document 1).

  Further, as another lid of the container, there is one having an annular cutting portion at a position eccentric to the mounting wall of the upper lid in order to reduce the opening torque necessary for breaking the cutting portion (see Patent Document 2). . In the container lid of Patent Document 2, when the upper lid is rotated at the time of opening, it is initially broken at a part of the cut portion, and then the breaking position is sequentially advanced from the initial fracture with the rotation of the upper lid. The cut part is completely broken.

  By the way, in a container such as Patent Document 1, when the extraction port is large or the material of the inner plug provided with the cutting portion is hard, a larger torque (tightening force) is required for opening, and the container is opened. Plugging can be difficult. Further, in the lid of the container of Patent Document 2, the opening is eccentric with respect to the extraction nozzle of the inner plug corresponding to the position of the cutting portion, and the size of the opening is limited due to the structure.

JP 2012-224375 A JP 2013-43687 A

  An object of this invention is to provide the container which can reduce the tightening force before opening at the time of opening.

  In order to solve the above-described object, a container according to the present invention is a container including a separation unit 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 separating portion after opening, and the container body side has a second threaded portion that is threadedly engaged with the first threaded portion. In any one of the first and second threaded portions, at least one screw thread has the upper lid with respect to the container body from a position where the upper lid starts to be inclined when a predetermined tightening amount is reached. It has the 1st bulging part which bulges to the root side at the time of tightening. Here, in addition to the case where the upper lid is a single upper lid, the upper lid also includes one constituted by an upper lid main body and another member assembled inside the upper lid main body. 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. In addition, the root side when the upper lid is tightened with respect to the container body means a side on which the first and second screwing portions are loosened. Specifically, when the first bulging portion is provided on the upper lid, it is on the side where the screwing is loosened when viewed from the upper lid, and when the first bulging portion is provided on the container body, the screwing is seen when viewed from the container body. It means that it is the direction side to loosen. In addition, although the 1st bulging part is provided in the screw part which engages at least substantially, it may be provided in the formal screw part which does not affect screwing.

  In the container, the upper lid is biased against the container body side by inclining the upper lid. Thereby, since stress concentrates on the contact part, the tightening force before opening or at the time of opening can be made relatively small in a container structured to be closed before opening or at the time of opening. In particular, when the extraction port such as a wide-mouthed container is large, when the material of the member provided with the cutting part is hard, or when the distance between the outer diameter of the upper lid and the inner diameter of the extraction port (diameter of the cutting part) is short, etc. Although a large tightening force is required for the stopper, the tightening force can be reduced even in the case of such a container.

  In a specific aspect of the present invention, in the container, the first bulging portion is provided from a position where the upper lid starts to be inclined to a terminal end of the thread of the first or second screwing portion. When the container has a structure in which the separation part is cut by tightening, the container can be continuously cut along the circumference of the cutting part. Further, in the case of a structure in which the separation portion is engaged with the upper lid without cutting the separation portion when the container is tightened, the separation portion can be continuously engaged along the circumference of the upper lid.

  In another aspect of the present invention, at least the upper surface of the thread of the first bulge portion of the first screwing portion bulges. In this case, the upper lid is tilted when tightened by making the upper lid a special shape.

  In still another aspect of the present invention, at least the lower surface of the thread of the first bulging portion of the second screwing portion bulges. In this case, by making the container body side a special shape, the upper lid is inclined when tightening.

  In still another aspect of the present invention, the first and second threaded portions have multiple threads, and the threads other than the threads having the first bulge portion among the threads of the multiple threads are A second bulging portion having the same bulging amount as the first bulging portion is provided at a position shifted to the base side from the one bulging portion. In this case, the thread width of the thread on the root side is the same for all threads, and the upper lid is tightened to the container body without tilting the upper lid when the upper lid is fully tightened to the container body (the container is sealed). be able to.

  In still another aspect of the present invention, the first and second threaded portions have a multi-threaded screw, and the first bulging portion is provided on a thread of half or less of the threads of the multi-threaded screw. In this case, the upper lid can be efficiently inclined before opening or at the time of opening.

  In still another aspect of the present invention, the diameter of the inner wall on the extraction side of the extraction port is not less than 1/2 and less than 1 of the diameter of the outer wall of the upper lid. Even if the extraction port is relatively large, the screw cap has the first bulging portion, so that the upper lid can be inclined so that stress can be concentrated locally on the container body side, thus reducing the tightening force. Can do.

  In still another aspect of the present invention, the separating portion has an engaging portion on the upper peripheral edge, and the upper lid is suspended from the lower surface of the ceiling wall and can accommodate the peripheral edge of the engaging portion, And a projecting portion that projects to the peripheral surface and restrains the engaging portion within the annular wall. In the case where the container has a structure in which the upper lid and the separating portion are engaged by tightening, stress can be locally concentrated on a portion associated with the engaging portion, and the tightening force before opening can be reduced.

  An inner plug having an extraction port is provided, and the second screwing portion is provided on at least one side of the container body and the inner plug.

  In still another aspect of the present invention, the separation part is connected to the extraction port part via a cutting part. In the case where the container has a structure in which the separation portion is cut by tightening, stress can be locally concentrated on a portion accompanying the cutting portion, and the tightening force at the time of opening can be reduced.

  In yet another aspect of the present invention, the position where the inclination of the upper lid is started is either immediately before or when the separation portion is supported by the upper lid.

  In yet another aspect of the present invention, the position at which the upper lid starts to be tilted is either just before or when the cutting portion is cut.

It is the front view which showed the principal part of the container which concerns on 1st Embodiment in the cross section. It is sectional drawing which showed operation | movement or the usage method of a container, (a) shows the state before use, (b) shows the state in which the engaging part of the inner plug was accommodated in the annular wall of an upper cover, c) shows a state in which the cutting portion is cut, and (d) shows a state in which the upper lid is detached from the container body. It is a conceptual explanatory drawing explaining the shape of the screw in a container, (a) shows the starting point and the end point of four screws, and (b) shows the section shape of those screws. It is the figure which showed the inclination state of the upper cover at the time of opening of the container which concerns on 1st Embodiment. It is a conceptual explanatory drawing explaining the shape of the screw in the container concerning a 2nd embodiment, (a) shows the starting point and the end point of four screws, (b) shows the section shape of those screws. Yes. It is the figure which showed the inclination state of the upper cover at the time of opening of the container which concerns on 2nd Embodiment.

  A specific embodiment of the container according to the present invention will be described with reference to FIGS.

[First Embodiment]
As shown in FIG. 1, the container 1 of the first embodiment is a container main body 10 that is a bottle, an inner plug 20 that is attached to the mouth 11 of the container main body 10, and a container that covers the inner plug 20. And an upper lid 30 screwed into the mouth portion 11 of the main body 10. The upper lid 30 and the container body 10 are respectively formed with a first threaded portion 51 and a second threaded portion 52. The threaded portions 51 and 52 are fastened, that is, engaged with each other by screwing. Thus, the upper lid 30 can be detachably fixed to the container body 10. Here, the first and second screwing portions 51 and 52 are screw portions 5 a that are substantially screwed in the screws 31 and 12 of the upper lid 30 and the container body 10. Except for the substantial screw portion 5a of the screws 31, 12, a formal screw portion 5b is formed.

  The container body 10 is a bottomed cylindrical molded product made of glass, synthetic resin, or the like, and the upper end mouth portion 11 has a cylindrical shape. A male screw 12 is formed on the outer peripheral surface of the mouth portion 11 as the second screwing portion 52. The male screw 12 is a multi-threaded screw and includes a plurality of screw threads 12a, and specifically includes, for example, four thread threads 12a. That is, the lead of the male screw 12 is four times the pitch.

  The inner plug 20 is an integrally molded product made of resin, and includes an inner plug body 21 having an extraction port 21b formed in the upper part thereof, and a separation portion 23 that seals the extraction port 21b of the inner plug body 21. The inner stopper main body 21 has a locking portion 21 a that is locked to the upper end portion 11 u of the mouth portion 11 of the container main body 10 at the lower peripheral edge. The separation portion 23 is connected to the upper end opening 21 u of the inner plug main body 21 by the cutting portion 22. That is, the separation unit 23 is connected to the extraction port 21e at the inner edge of the extraction port 21b via the cutting unit 22. The cutting part 22 is cut | disconnected by tightening the upper cover 30 to the container main body 10 side at the time of opening.

  The inner plug main body 21 is formed in a cylindrical shape as a whole, and has a lip 21c whose diameter increases upward at the upper end opening 21u. The lip 21c improves liquid drainage when the liquid in the container body 10 is poured out. The locking portion 21a of the inner plug main body 21 has an annular recess 21d formed on the lower end surface, and the container main body 10 is formed by fitting and crimping the annular recess 21d to the upper end 11u of the mouth portion 11 of the container main body 10. It is firmly locked to.

  The separation part 23 has a cylindrical part 23a having an outer diameter substantially the same as the inner diameter of the inner plug main body 21, and a ceiling wall 23b that closes the opening of the cylindrical part 23a. The separation portion 23 has a flange-like engagement portion 23c that extends radially outward from the upper end of the tubular portion 23a.

  The upper lid 30 is an integrally molded product made of resin, and includes a peripheral wall 30a and a ceiling wall 30b. A female screw 31 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 30a. The upper lid 30 covers the inner plug 20 and protects it from the external environment such as dust and water. The female screw 31 has a shape corresponding to the male screw 12 on the side of the inner plug 20 with respect to pitch and leads. That is, the female screw 31 is a multi-threaded screw and includes a plurality of screw threads 31a, and specifically includes, for example, four thread threads 31a.

  On the inner surface of the ceiling wall 30b of the upper lid 30, an annular wall 32 for receiving the engaging portion 23c of the inner plug 20 is suspended. The annular wall 32 has an inner peripheral surface 32a formed in parallel with the rotation axis AX of the upper lid 30, and is formed so that the wall thickness becomes thinner toward the lower end. The outer wall 32b side of the annular wall 32 is tapered. It is in the shape.

  Further, a projecting portion 33 is formed on the inner peripheral surface 32a of the annular wall 32 of the upper lid 30 so as to constrain the engaging portion 23c of the inner plug 20 in the annular wall 32 when opening the plug. That is, the annular wall 32 functions as a holding portion that can hold the separation portion 23 of the inner plug 20 between the ceiling wall 30 b and the protruding portion 33. The protrusion 33 according to the embodiment is an annular protrusion formed over the entire circumference along the inner peripheral surface 32 a of the annular wall 32, but is locally formed along the inner peripheral surface 32 a of the annular wall 32. It may be.

  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 31, the AB direction corresponding to the downward direction of the paper is the direction in which the upper lid 30 is tightened with respect to the container body 10, and the CD direction corresponding to the upward direction of the paper is In this direction, the upper lid 30 is loosened with respect to the container body 10 (in the direction of loosening as viewed from the upper lid 30). Conversely, with respect to the second threaded portion 52 or the male screw 12, the CD direction is a direction in which the container body 10 is tightened with respect to the upper lid 30, and the AB direction loosens the container body 10 with respect to the upper lid 30. Direction (direction loosened when viewed from the container body 10).

  Below, the operation | work of the assembly | attachment of the inner stopper 20 and the upper cover 30 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 the liquid into the container main body 10, as shown in FIG. 2A, the locking portion 21 a of the inner plug 20 is attached to the mouth portion 11 of the container main body 10. Next, the inner cap 20 is covered with the upper lid 30 and the female screw 31 is screwed into the male screw 12 of the container body 10. At this time, the first screwing part 51 and the second screwing part 52 are in an appropriately tightened and engaged state so as not to reach the innermost part. In this state, the product is sold and displayed.

  When taking out the contents from the container 1 in this state, first, the upper lid 30 is rotated in the direction of tightening, that is, clockwise. Then, the protruding portion 33 provided on the annular wall 32 of the upper lid 30 reaches the engaging portion 23 c of the inner plug 20. When the upper lid 30 is further rotated in the tightening direction, the peripheral edge of the engaging portion 23 c is bent by the protruding portion 33. When the upper lid 30 is further rotated in the tightening direction, the peripheral surface of the engaging portion 23 c gets over the protruding portion 33. In this state, as shown in FIG. 2 (b), the separating portion 23 of the inner plug 20 or the engaging portion 23 c thereof is restrained between the ceiling wall 30 b of the upper lid 30 and the protruding portion 33. In addition, you may sell and display goods in the state of FIG.2 (b).

  From this state, when the upper lid 30 is further rotated in the direction of tightening, as shown in FIG. 2C, the upper lid 30 is lowered, and the separation portion 23 is lowered by being pushed by this, and the separation portion 23 and the inner plug are also lowered. The cutting part 22 provided at the boundary with the main body 21 is cut. Before and after the cutting of the cutting portion 22, the upper lid 30 is not lowered uniformly while maintaining the posture, but will be described in detail later. By adjusting the shape of the thread 12a and the like, the upper lid 30 is temporarily set to the rotation axis AX. By slightly tilting or tilting, the cutting part 22 can be cut relatively easily, and the force required for tightening the upper lid 30 can be reduced. Before the upper lid 30 is rotated, the upper lid 30 is not inclined and there is a margin in the screwed state of the first and second screwing portions 51 and 52 (with rattling). Thereafter, the upper lid 30 is rotated while the upper lid 30 is tilted to open the plug, and finally the first and second screwing portions 51 and 52 are firmly screwed together without the upper lid 30 being tilted (no rattling). .

  In this state, when the upper lid 30 is rotated in the loosening direction, that is, counterclockwise, as shown in FIG. 2D, the separation portion 23 held by the annular wall 32 is detached from the inner plug main body 21 along with the upper lid 30. Removed and opened. Therefore, the liquid in the container body 10 can be poured out from the extraction port 21b.

  Further, when the upper lid 30 is attached again to the mouth portion 11 of the container main body 10 in order to plug the container main body 10, the cylindrical portion 23a of the separation portion 23 held by the upper lid 30 is shown in FIG. As described above, it is attached to the extraction port 21b of the inner plug main body 21, thereby sealing the extraction port 21b.

  Hereinafter, a method of temporarily tilting the upper lid 30 when the upper lid 30 is tightened will be described with reference to FIGS. 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 of each strip has a length of about 180 ° around the rotation axis AX from the start point to the end point, for example, at intervals of 90 °. That is, as shown in FIG. 3A, the range of the angles θ1, θ2, θ3, and θ4 from the starting point or upper end of the thread 12a of each strip is 0 ° to 180 °.

  The first thread 12a of the male screw 12 has an angle α ° position that is in front of the later-described angle ε ° position (a position at which the inclination of the upper lid 30 is started when a predetermined tightening amount is reached). 1st bulging portion 12g from the end point to the end point (the base side when tightened when viewed from the container body 10), and the lower surface, that is, the surface on the AB direction side (the loosening side when viewed from the container body 10) bulges. Yes. That is, in the first thread 12a, the thread width of the portion where the first bulging portion 12g is provided is larger than the thread width of the portion where the first bulging portion 12g is not provided. . In the present embodiment, the position at which the inclination of the upper lid 30 is started is the position when the upper lid 30 and the separation portion 23 abut, that is, the position immediately before the cutting portion 22 is cut. The first bulging portion 12g has a thread width of, for example, 2 mm from the relatively small angle α ° position to the lower end point with respect to the reference spiral trajectory rising at a uniform pitch when viewed from the container body 10. As a result, it is shaped into a shape displaced in the AB direction, that is, in the downward direction by a bulge amount of about 1 mm. That is, the first thread 12a is in a state in which the thickness in the direction of the rotation axis AX is increased in the range from the angle α ° position close to the start point to the end point of the lower end.

  In addition, the thread 12a of the male thread 12 other than the first thread is the end point from the angle β ° position on the root side (that is, the lower side) when tightening from the angle ε ° position. The second bulging portion 12h is included, and the lower surface, that is, the surface on the AB direction side bulges. That is, in the second to fourth thread 12a, the thread width of the portion where the second bulging portion 12h is provided is greater than the thread width of the portion where the second bulging portion 12h is not provided. It is getting bigger. The second bulging portion 12h extends from the relatively large angle β ° position to the lower end point with respect to the reference spiral trajectory rising at a uniform pitch when viewed from the container body 10, for example, by a bulging amount of about 1 mm in the AB direction. It is formed into a shape displaced. That is, the thread 12a of the other strips other than the first strip is in a state where the thickness in the direction of the rotation axis AX is increased in a range from the angle β ° position away from the start point to the end point of the lower end. At the angle β ° position, the bulging portions 12g and 12h appear on the thread 12a of all the strips.

  Therefore, in the container 1 according to the present embodiment, the ceiling wall 30b of the upper lid 30 is at the angle ε ° position (in the state shown in FIG. 2B) in contact with the separation portion 23 of the inner plug 20, as in the example shown in FIG. In addition, the thread 31a of the female screw 31 provided on the upper lid 30 or the upper surface 31m of the male thread 12 bulges toward the lower side of the container body 10 of the male screw 12 (see the section A). 1 bulges 12g of the bulging part 12g (surface displaced downward from the broken line to the position of the solid line in FIG. 4) while screwing, while the lower surface of the other second to fourth thread 12a The upper lid 30 is inclined to the lower right on the paper surface because the screw spirals while abutting the upper surface 31m of the thread 31a along the reference surface 12k (the surface indicated by the broken line in FIG. 4) of the reference spiral trajectory. In FIG. 4, S1 indicates the position of the ceiling wall 30b when the upper lid 30 is not inclined, and S2 indicates the position of the ceiling wall 30b when the upper lid 30 is inclined. Since the upper lid 30 starts to tilt at the angle α ° position, the rotation angle range θ when the upper lid 30 tilts is α ≦ θ <β (α ≦ ε <β). The rotation angle range θ corresponds to the angles θ1 to θ4 in FIG. 3A when viewed by thread engagement or screwing.

  As a result, the right end of the engaging portion 23c of the separating portion 23 of the inner plug 20 is pushed downward, and stress concentrated on the right end of the cutting portion 22 acts, thereby causing the cutting portion 22 of that part or region AR. Is preferentially disconnected. And the other part of the cutting part 22 is also cut | disconnected sequentially by the further screwing of the upper cover 30. FIG. During the screwing, the upper lid 30 is inclined within a substantially constant range when viewed from the container body 10. Therefore, in the screwing at the time of opening, the upper lid 30 is entirely displaced toward the container body 10 side and the cutting part 22 is cut, although the position where the upper lid 30 is lowered most by the inclination is slightly shifted.

  In the container 1 of the above embodiment, when the upper lid 30 is attached to the mouth portion 11 of the container main body 10 again in order to plug the container main body 10 after opening the separation portion 23, the upper lid 30 holds the upper lid 30. As shown in FIG. 2C, the cylindrical portion 23a of the separation portion 23 is attached to the upper end opening portion 21u of the inner plug main body 21, thereby sealing the extraction port 21b. At that time, as shown in FIG. 3B, the upper surface 31m of the four screw threads 31a of the female screw 31 provided on the upper lid 30 side on the base side when tightening from the angle β ° position is the container main body 10 side. Since the male screw 12 contacts the bulging surface 12f of the lower surface of the first and second bulging portions 12g and 12h of the first to fourth thread 12a of the male screw 12 with a substantially equal force, the upper lid 30 has a rotational axis AX. It is in a restored state (a state that is concentric with the container body 10) with little inclination with respect to, and smoothly and smoothly screwed downward from this state to the end point. In this state, the upper lid 30 is attached to the container main body 10 in a concentric state with respect to the container main body 10, that is, the cylindrical portion 23 a of the separating portion 23 is uniformly pressed against the upper end opening 21 u of the inner plug main body 21. The

  According to the container described above, by tilting the upper lid 30 when tightening, the upper lid 30 is biased against the container body 10 side (in this embodiment, the portion associated with the cutting portion 22 of the inner plug 20). Let Thereby, since stress concentrates on the contact portion, the tightening force before opening or at the time of opening can be made relatively small in the container 1 structured to be closed before opening or at the time of opening. In particular, the upper end opening 21u of the inner plug 20 such as a wide-mouthed container (the diameter of the inner wall on the extraction side of the extraction port 21b is about 1/2 or more and less than 1 of the outer wall of the upper lid 30 near the extraction side of the extraction port 21b) In the case where the distance between the outer diameter of the upper lid 30 and the inner diameter of the extraction port 21b (the diameter of the cutting part 22) is short, etc. Although a large cutting force is required for opening the plug, the tightening force can be reduced even in the case of such a container. For example, in the case of a wide-mouthed container, the outer wall of the upper lid 30 is a force point, the inner wall on the extraction side of the extraction port 21b is an action point, and the positions of the force point and the action point are close. Therefore, more tightening force at the time of opening or opening is required, but by tightening the upper lid 30, the tightening force at the time of opening or opening is reduced.

[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 that are not particularly described are the same as those of the container 1 of the first embodiment. In the first embodiment shown in FIGS. 3 and 4, the upper lid 30 is tilted in a state where the inner surface of the ceiling wall 30 b of the upper lid 30 is in contact with the separation portion 23 of the inner plug 20. The lower surface of some of the threads 12a of the male screw 12 of the container body 10 is bulged in advance, but in the second embodiment, the male screw 12 on the container body 10 side and the female screw on the upper lid 30 side are expanded. The role with 31 is switched.

  As shown in FIGS. 5 and 6, in the case of the second embodiment, the upper surface of the thread 31 a of the female screw 31 provided on the upper lid 30 is bulged (see the cross section B). The thread 31a of the first article is tightened when viewed from the upper lid 30 from the angle α ° position (position where the inclination of the upper lid 30 is started when a predetermined tightening amount is reached), which is before the angle ε ° position. The first bulging portion 31g is provided up to the base side when the knives are inserted, and the upper surface, that is, the surface on the CD direction side (the loosening side when viewed from the upper lid 30) bulges. In the present embodiment, the position at which the inclination of the upper lid 30 is started is the position when the upper lid 30 and the separation portion 23 abut, that is, the position immediately before the cutting portion 22 is cut. Further, the thread 31a of the other thread other than the first thread in the female thread 31 extends from the angle (beta) position on the root side (that is, the upper side) when tightening from the position of the angle (epsilon) to the end point. It has two bulging portions 31h, and the upper surface, that is, the surface in the CD direction bulges.

  Accordingly, in the container 1 of the second embodiment, the ceiling wall 30b of the upper lid 30 is at the angle ε ° position (in the state shown in FIG. 2B) where the ceiling wall 30b is in contact with the separation portion 23 of the inner plug 20, and the example shown in FIG. As described above, the bulging surface 31f of the first thread 31a bulged upward (see the cross section B) of the thread 31a of the female thread 31 provided on the upper lid 30 (from the broken line to the position of the solid line in FIG. 6). The upper surface of the screw thread 12a of the container body 10 is abutted against the lower surface 12m of the container body 10 and screwed while the upper surface of the other second to fourth thread threads 31a is the reference surface 31k ( 6, the upper lid 30 is inclined to the lower right on the paper surface.

  As a result, the right end of the engaging portion 23c of the separating portion 23 of the inner plug 20 is pushed downward, and stress concentrated on the right end of the cutting portion 22 acts, thereby causing the cutting portion 22 of that part or region. Disconnected preferentially. And the other part of the cutting part 22 is also cut | disconnected sequentially by the further screwing of the upper cover 30. FIG. During the screwing, the upper lid 30 is continuously inclined along the circumference. Therefore, the top lid 30 is moved toward the container main body 10 side while performing the neck swinging motion (precession motion) of the top that rotates while the top lid 30 is tilted during screwing at the time of opening. And the cutting part 22 is cut.

  Also in the case of the second embodiment, when the upper lid 30 is attached to the mouth portion 11 of the container main body 10 again to plug the container main body 10, the cylindrical portion 23 a of the separation portion 23 held by the upper lid 30. However, as shown in FIG. 2 (c), it is attached to the upper end opening 21u of the inner plug main body 21, thereby sealing the extraction port 21b. At that time, as shown in FIG. 5B, the first and second bulge portions of the four screw threads 31a of the female screw 31 provided on the upper lid 30 side on the base side when tightening from the angle β ° position. Since the bulging surfaces 31f at 31g and 31h abut against the lower surface 12m of the first to fourth thread 12a of the male thread 12 on the container body 10 side with a substantially equal force, the upper lid 30 is in contact with the rotation axis AX. Thus, the state is restored without being inclined (a state concentric with the container body 10), and is smoothly screwed downward from this state toward the end point. In this state, the upper lid 30 is attached to the container main body 10 in a concentric state with respect to the container main body 10, that is, the cylindrical portion 23 a of the separating portion 23 is uniformly pressed against the upper end opening 21 u of the inner plug main body 21. The

  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 31a 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 1 thread thread composition, or can be made into 2 thread, 3 thread, or 5 or more thread thread composition.

  In the above embodiment, after the bulging portion is once formed from the start point to the end point of the screw threads 31a, 12a, the screw thread width (the bulging portions 12g, 12h, 31g of the screw threads 31a, 12a in the rotation axis AX direction). , 31h) is not restored, but the thread width in the direction of the rotation axis AX of the threads 31a, 12a can be returned to the end point in the same manner as the starting point. In this case, even when the upper lid 30 is fully tightened, some backlash tends to remain, but such backlash may be allowed.

  In the above embodiment, the upper lid 30 is inclined before the cutting portion 22 is cut, but before the separation portion 23 is supported by the upper lid 30, for example, when the separation portion 23 is fitted (engaged) with the upper lid 30. 30 may be inclined. As described above, examples in which the upper lid 30 starts to tilt include when the separation portion 23 is supported by the upper lid 30, immediately before being supported, when the cutting portion 22 is cut, and immediately before being cut. Among these, it is preferable to be immediately before supporting and immediately before cutting. Furthermore, in order to reduce the number of rotations of the upper lid 30, it is most preferable immediately before cutting the cutting portion 22 that requires the most force.

  In the above embodiment, the second bulging portions 12h and 31h do not have to bulge all at the same rotational position, and a pair of first threads 12a and 31a having the first bulging portions 12g and 31g. It is only necessary that the surfaces of the threads 12a and 31a located at the corners bulge with the latest delay.

  In the said embodiment, if it is the structure which fastens the upper cover 30 to the container main body 10 side before opening or at the time of opening, the structure of the container 1 and the upper cover 30 etc. can be changed suitably. For example, the inner plug 20 may not be provided, and the container main body 10 may be provided with a separation part via a cutting part (for example, see JP 2013-249108 A). Further, the inner plug may be composed of two or more members, and the cutting portion may be provided outside the inner plug main body instead of inside, so that the separation portion does not form the extraction port by cutting the cutting portion (for example, JP, 2012-46209, A). In addition, the range in which the upper lid 30 is inclined (the range in which the first bulging portions 12g and 31g are provided) can be changed as appropriate depending on the structure of the container 1. For example, (i) While the separation portion 23 is engaged with the upper lid 30 (Ii) While cutting the cutting part 22, and any of the above (i) and (ii) is applied.

  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 isolation | separation part 23 in another member.

  In the above-described embodiment, the separation unit 23 is connected to the extraction port 21e at the inner edge of the extraction port 21b via the cutting unit 22. However, the separation unit 23 may be separated from the container body 10 side from the beginning. Good. In the case of such a structure, the tightening force for supporting the upper lid 30 on the separation part 23 is mainly reduced.

  In the said embodiment, although the 1st bulging part 12g, 31g was provided in the 1 thread 12a, 31a, you may provide in multiple, Preferably the thread 12a, 31a below half.

  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 rotation angle range θ shown in FIGS. 3 and 5 is an example, and can be changed as appropriate.

  In the above embodiment, the male screw 12 is provided on the container body 10, but the male screw 12 may be provided on the inner plug 20.

  DESCRIPTION OF SYMBOLS 1 ... Container, 10 ... Container main body, 11 ... Mouth part, 12 ... Male screw, 12g, 12h ... Swelling part, 20 ... Inner plug, 21 ... Inner plug main body, 21a ... Locking part, 21b ... Extraction port, 21c Lip, 21d, annular recess, 22 ... cutting part, 23a separating part, 23a ... cylindrical part, 23b ... ceiling wall, 23c ... engaging part, 30 ... upper lid, 30a ... peripheral wall, 30b ... ceiling wall, 31 ... Female thread, 32 ... annular wall, 33 ... projecting part, 51, 52 ... threaded part

Claims (12)

A separation part for sealing the extraction port through which the contents in the container body are poured out;
An upper lid covering the extraction port;
A container comprising:
The upper lid has a first threaded portion that is threadedly engaged with the container body side, and supports the separating portion after opening.
The container body side has a second threaded portion that is threadedly engaged with the first threaded portion,
In any one of the first and second threaded portions, at least one thread is formed so that the upper lid is moved relative to the container main body from a position where the upper lid starts to be inclined when a predetermined tightening amount is reached. A container having a first bulging portion that bulges up to the base side when tightening.   2. The container according to claim 1, wherein the first bulging portion is provided from a position where the inclination of the upper lid is started to a terminal end of the thread of the first or second screwing portion.   3. The container according to claim 1, wherein an upper surface of the at least one thread bulges in the first bulging portion of the first screwing portion.   3. The container according to claim 1, wherein a bottom surface of the at least one thread bulges in the first bulging portion of the second screwing portion. The first and second threaded portions have multiple threads.
Among the threads of the multi-threaded screw, the threads other than the thread having the first bulging portion are the same as the first bulging portion at a position shifted to the root side from the first bulging portion. 5. A container according to any one of claims 1 to 4, characterized in that it has an amount of a second bulge. The first and second threaded portions have multiple threads.
The container according to any one of claims 1 to 5, wherein the first bulging portion is provided on half or less of the threads of the multi-threaded screw.   The container according to any one of claims 1 to 6, wherein the diameter of the inner wall on the extraction side of the extraction port is not less than 1/2 and less than 1 of the diameter of the outer wall of the upper lid. The separation part has an engagement 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 on at least one side of the container main body and the inner stopper.   The container according to any one of claims 1 to 9, wherein the separation part is connected to the extraction port part via a cutting part.   The position at which the inclination of the upper lid is started is any one of the time immediately before and when the separation portion is supported by the upper lid, according to any one of claims 1 to 10. Container.   The container according to claim 10, wherein the position at which the upper lid starts to be tilted is immediately before or when the cutting portion is cut.

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