JP6532784B2 - Inside stoppered container - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a stoppered container, and more particularly to a stoppered container in which a part of the stopper in a closed state is held by the upper lid.

  As a known lid structure used for a stoppered container, for example, a stopper having a separated portion in the center, and an upper lid screwed to the container so as to cover the stopper therein, the stopper being a container There is one that is locked to the opening and engages the separated portion of the inside plug with the inside of the upper lid (see, for example, FIGS. 1 and 2 of Patent Document 1).

  In this container, the upper lid is previously engaged (screwed) with the separated portion of the inner plug, for example, by a reverse screw, and the inner lid is unscrewed so as to remove the upper lid from the mouth (forward screw) of the container at the time of opening. The separating part of the is screwed onto the connection of the upper lid, whereby the separating part is separated by shearing from the body part of the inner plug and it is held on the upper lid. A thin score is formed between the body portion of the plug and the separation portion to facilitate separation. According to the inside-plugged container, the opening can be easily performed simply by loosening the upper lid, and the separated separated portion is held by the upper lid, so that it does not become so-called dust, and the separated portion It can function as a seal.

  By the way, it is confirmed by the click feeling and the torque that the separation part of the inside plug is separated from the main body part by shearing at the time of opening. Therefore, the hardness of the material of the inner plug and the thickness and other shapes of the core plug are adjusted to facilitate recognition of shear, but as a result, when unscrewing the upper lid for opening, it is somewhat large It tends to require force.

International Publication No. WO 2007/126062

  The present invention has been made in view of the above background art, and an object of the present invention is to provide a stoppered container which can reduce the force required to separate the separation portion from the stopper.

In order to solve the above problems, a container with a stopper according to the present invention comprises: (a) a stopper having a separated portion which is separated to form an opening, and an upper lid attached to the container so as to cover the stopper. (B) The upper lid has a support portion for capturing the separated portion upon opening and separating the separated portion from the inner plug, and (c) a first screw provided between the separated portion and the support portion The separation portion and the support portion are connected by the joint portion, and (d) a thread lead provided on the support portion side of the first screw portion and a separation portion side of the first screw portion Thread leads are different.

  According to the above-mentioned stoppered container, since the lead of the pair of screw threads constituting the first screwing portion is different, the engagement state of the first screwing portion is biased when opening the stopper, and the separated portion Since a part in the circumferential direction of the is preferentially lifted and the shear stress is concentrated there, the separation part can be separated from the main body side with a relatively small force.

  Moreover, according to the specific side surface of this invention, a pair of screw thread which comprises a 1st screwing part is a single thread screw in the said container with a stopper. In this case, it is sufficient to adjust the lead of one thread, and it is not necessary to adjust the lead and the arrangement among the plural threads, and the first screwing portion can be made into a simple structure. The single-threaded screw is not limited to one formed along the entire circumference, and may be divided into, for example, a plurality of pieces.

  Further, according to another aspect of the present invention, the single thread screw is formed over a range of 360 degrees or more. In this case, the first screwing portion is present over the entire circumference, and when the plugging is performed, the holding of the separation portion by the support portion is ensured, and the separation of the separation portion can be made reliable.

According to still another aspect of the present invention, the pair of screw threads constituting the first screwing part is an n-slot screw with a number m of turns, the larger lead being P1 (mm) and the smaller lead being P2 When the screw thread width is W (mm), the lead difference ΔP = P1-P2 (mm) is
ΔP ≦ P1 / (m · n) −2 W / m
Given by

  According to still another aspect of the present invention, the second screwing portion provided between the upper lid and the container or the inner plug enables the upper lid to be detached, and the second screwing portion is the first screwing portion. The screwing relationship is reverse to that of. In this case, the first screwing portion can be tightened by loosening the second screwing portion, or the first screwing portion can be loosened by tightening the second screwing portion. Also the separation part can be separated from the body part.

According to still another aspect of the present invention, the ridges of the pair of screws constituting the first screwing portion have a burr shape which facilitates pushing the separated portion into the support rather than pulling out the separated portion from the support. It is formed. For example, when the second screwing portion is provided between the upper lid and the container, it is conceivable to fix the inner plug to the container in advance and then assemble the upper lid to the inner plug and the container. Under the present circumstances, by making a 2nd screwing part function and screwing a plug inside to an upper lid, the bar-like shape of the 1st screwing part in reverse screwing relation makes either the separation part or the support part the other. The separated portion can be engaged and fixed to the support by means of allowing it to be pushed in and forced screwing of the support and the separated portion. Also, at the time of opening the plug, usually the upper lid is turned back so as to loosen the second screwed part, but the first screwed part can not be tightened any more. At the same time as the rotation of the second screwing portion, the support portion and the separation portion that constitute the first screwing portion rotate together, and the separation portion is threaded. Even if the tightening of the first screwing portion is insufficient when assembling the upper lid and the inner plug, the second screwing portion is loosened by the upper lid, and the first screwing portion is tightened so as to bite. As a result, the separating part can be pulled into the support and the separating part can be separated quickly from the body part of the plug.
As mentioned above, in addition to the ridges of the pair of screws constituting the first screwing portion being in a bent shape, since the leads of these screw threads are different, all the mountains at one time when crossing over the screw threads And gradually go over the mountain, and there is less load when engaging the separated portion with the support portion.

  According to still another aspect of the present invention, the separation portion and the support portion are elastically fitted at places other than the first screwing portion. In this case, the separation portion can be inclined at the time of opening, and after opening, the posture of the separation portion is stable, and the seal between the upper lid and the separation portion becomes reliable.

  According to still another aspect of the present invention, the support portion has a first cylindrical portion extending downward from the lower surface of the ceiling wall of the upper lid, and the separated portion is from the sealing body connected to the main body portion of the inner plug A separated portion and a support portion are provided by having a second cylindrical portion extending upward and surrounding the first cylindrical portion from the periphery, and the second cylindrical portion and the first cylindrical portion abut on a portion other than the first screw portion. Will fit. In this case, since the separation portion and the support portion are fitted at a portion other than the first screw portion (specifically, the tip and the base of the first and second cylindrical portions), holding of the separation portion by the support portion Is stable and the sealing effect is also improved.

According to still another aspect of the present invention, the upper lid has, outside the second tubular portion, a third tubular portion surrounding the second tubular portion from the periphery in a state where the upper lid is attached to the container, the third tubular The tip of the portion abuts on at least a part of the connecting portion between the cylindrical main body portion of the inside plug and the separation portion in a state where the upper lid is attached to the container. In this case, with the upper lid attached to the container, the third cylindrical portion of the upper lid abuts on the connecting portion of the main body portion of the inner plug, and the sealing effect is further enhanced .

FIG. 1 is an exploded perspective view showing an embodiment of a stoppered container according to the present invention. It is sectional drawing which showed the state which locked the inner stopper of the container with an inner stopper of this embodiment to a container. It is sectional drawing which showed the state which has screwed the upper lid of the container with a stopper inside of this embodiment to a container. It is a partial expanded sectional view of a 1st screwing part. It is an expanded view explaining the lead of a screw thread. (A) is the figure which expanded a part of FIG. 5 further, and is the figure which looked at the internal thread from the inside, (b) is a figure which further expanded a part of FIG. It is the figure seen, (c) is CC arrow sectional drawing of the thread shown in (b) etc. FIG. It is sectional drawing which expanded and showed the principal part in the container with an inner stopper shown in FIG. It is principal part sectional drawing which expanded and showed isolation | separation of the inner stopper in a container with an inner stopper. It is the principal part enlarged sectional view which showed the state which isolation | separation of the plug inside in a container with a plug inside completed completely. It is sectional drawing which showed the state which separated the upper cover from the container in the container with a stopper.

  FIG. 1 shows an embodiment of a stoppered container according to the present invention. In the following embodiment, the positional relationship of the upper and lower sides etc. is explained in a state where the axial center of the container is set vertically.

  The stoppered container 100 shown in FIG. 1 includes a container 1 for storing contents and a lid assembly 3 for sealing the container 1. The lid assembly 3 includes an inner plug 10 which is locked or fixed to the opening 1a of the container 1 by fitting or the like, and an upper lid 20 which is screwed to the opening 1a of the container 1 so as to cover the inner plug 10. It is composed of

  The inside plug 10 of the lid assembly 3 is an integral molded product made of resin, and includes a main body portion 11 fitted to the opening 1a of the container 1 and a separated portion 12 separated at the time of opening. . As shown in FIG. 2, the inside plug 10 is locked so that the main body portion 11 thereof is fitted into the mouth 1 a of the container 1 after the contents are accommodated in the container 1. Then, as shown in FIG. 3, the separated portion 12 of the inside plug 10 is engaged with the support portion 28 of the upper lid 20 by screwing the upper lid 20 to the opening 1 a of the container 1.

  As shown in FIG. 2, the main body portion 11 of the inside plug 10 forms an opening 10 a which is an extraction port for the contents of the container 1, and the outer peripheral surface of the cylindrical base 11 a and the middle portion of the cylindrical base 11 a And an annular wall portion 11c extending downward from an outer end of the flange portion 11b. An annular recess 13 fitted to the mouth 1a of the container 1 is defined by the cylindrical base 11a, the flange 11b and the annular wall 11c. Moreover, the lip part 14 which spreads outside is formed in the upper end of the cylindrical base 11a.

The separation portion 12 of the inner plug 10 includes a disc-like sealing body 12a disposed at the bottom and a connecting cylindrical portion 12b which is a cylindrical member extending upward from the outer edge of the sealing body 12a. . The latter connecting cylindrical portion 12 b is a second cylindrical portion that constitutes the lid assembly 3. An outer peripheral side boundary portion between the outer edge of the sealing body 12a and the lower portion of the connecting cylindrical portion 12b is connected to the main body portion 11 of the inner plug 10 by the connecting portion 15 which extends annularly. A notch 16 having a V-shaped cross section in the radial direction is formed on the lower surface of the annular connection portion 15. This notch 16 is a score cut at the time of opening. The connecting cylindrical portion 12 b is disposed apart from and concentrically with the cylindrical base portion 11 a on the main body portion 11 side. An internal thread 17 is formed on the inner peripheral surface of the connecting cylindrical portion 12b. The female screw 17 is screwed with a male screw 22 provided on a support portion 28 of the upper lid 20 described later.
Although the notches 16 are formed on the lower surface of the connecting portion 15 in the illustrated example, the notches 16 can also be formed on the upper surface or both upper and lower surfaces of the connecting portion 15.

As shown in FIG. 2 etc., the upper lid 20 is an integrally molded product made of resin, and includes a cylindrical peripheral wall portion 20a and a circular ceiling wall 20f as a portion forming an appearance. The upper lid 20 has a cylindrical support portion 28 disposed coaxially with the peripheral wall portion 20a inside, and a large diameter cylindrical portion 20c and an intermediate diameter cylinder are provided between the peripheral wall portion 20a and the support portion 28. A portion 20d and a small diameter cylindrical portion 20e are provided. The support portion 28 and the cylindrical portions 20c, 20d and 20e extend downward from the lower surface of the ceiling wall 20f, and are concentrically connected by being supported at the upper end by the ceiling wall 20f. The innermost support portion 28 is a first cylindrical portion 20 b constituting the lid assembly 3, and the inner small diameter cylindrical portion 20 e next to that is a third cylindrical portion constituting the lid assembly 3.
In the upper lid 20, a female screw 21 is formed on the inner peripheral surface of the lower end of the outermost peripheral wall portion 20a. The female screw 21 is screwed with the male screw 2 formed on the outer peripheral surface of the opening 1 a of the container 1. Further, a male screw 22 is formed on the outer peripheral surface of the support portion 28 or the first cylindrical portion 20b. The male screw 22 is screwed with a female screw 17 formed on the separated portion 12 of the inner plug 10.

  Referring to FIG. 3, the female screw 17 formed in the separated portion 12 of the inner plug 10 and the male screw 22 formed in the support portion 28 of the upper lid 20 are the support portion of the upper lid 20 and the separated portion 12 of the inner plug 10. A first screwing portion A for fastening and fixing to 28 is configured. The female screw 21 of the peripheral wall 20a of the upper lid 20 and the male screw 2 of the mouth 1a of the container 1 constitute a second screwing portion B which enables the upper lid 20 to be attached to and detached from the container 1.

The first and second screwing parts A and B are in an opposite screwing relation to each other. That is, when the second screwing portion B is unscrewed so that the second screwing portion B is loosened by rotating the peripheral wall portion 20a of the upper lid 20 counterclockwise as viewed from above, the support 28 of the upper lid 20 or the first cylindrical portion 20b is anticlockwise The first screwing portion A is tightened by rotating in the direction. At this time, for the separated portion 12, the upper side along the axial center AX of the connection cylindrical portion 12b is screwed by being screwed by the counterclockwise rotation when viewed from the bottom with respect to the support portion 28 or the first cylindrical portion 20b. It is in the direction. In addition, the lower side along the axial center AX for the separation portion 12 is in an anti-screw advancing direction in which screwing is performed by clockwise rotation when viewed from below with respect to the support portion 28 or the first cylindrical portion 20b .
The combination of the first screwing portion A and the second screwing portion B is separated by rotating the upper lid 20 in a direction for loosening the upper lid 20 with respect to the container 1 when the lid assembly 3 is in the unopened state. It functions as an opening mechanism part which separates the part 12 from the main-body part 11 and opens it.

The first screwing portion A, that is, the female screw 17 formed in the separated portion 12 of the inner plug 10, and the male screw 22 formed in the support portion 28 of the upper lid 20 or the first cylindrical portion 20b meshed therewith are separated It has a burr shape that facilitates pushing the separation portion 12 into the support 28 rather than pulling the portion 12 out of the support 28.
Specifically, as shown in FIG. 4, in order to facilitate the deformation of the external thread 22 and the internal thread 17 at the first screwing portion A and facilitate the fitting of the support portion 28 to the connecting cylindrical portion 12 b, The width W1 of the screw thread base 17b, 22b is made wider than the width W2 of the screw thread top 17a, 22a, and the width W3 between the adjacent screw thread bases 17b, 22b is greater than the width W2 of the screw head It is also wide enough. Furthermore, the thread of the male screw 22 and the female screw 17 is formed in a bent shape. Specifically, in the female screw 17 constituting the first screwing portion A, the side S1 on the screw side with the male screw 22 at the time of displacing the separated portion 12 is the inside of the top portion 17a or the inner plug 10 in the radial direction. The inclination amount α of the side surface S1 with respect to the base 17b of the female screw 17 is larger than the inclination amount β of the opposite side S2 across the top 17a. There is. In other words, the internal thread 17 of the separation portion 12 is generally inclined in the opposite direction or downward direction along the axis AX of the inner plug 10 with reference to the thread base 17b. . Similarly, the male screw 22 of the support portion 28 is generally inclined in the direction opposite to the screw advancing direction along the axis AX or upward with reference to the screw thread base 22 b. Thereby, when making the 2nd screwing part B function at the time of an assembly, and connecting the upper cover 20 with the inside plug 10, the bar-like shape of the 1st screwing part A in reverse screwing relation is the separation part 12 and support The separation portion 12 can be engaged and fixed to the support portion 28 by forcibly screwing the support portion 28 and the separation portion 12 while permitting one of the portions 28 to be pushed into the other. In addition, when opening the plug, the upper lid 20 is rotated so as to unscrew the second screwing portion B so that the second screwing portion B is loosened. Since the first screwing portion A is tightened, the separated portion 12 is reliably held by the support portion 28, and it becomes simple and quick to separate the separated portion 12 from the main body portion 11 of the inside plug 10.

FIG. 5 is a conceptual surface in which the first screwing portion A is expanded in the circumferential direction, and FIGS. 6A to 6C are views for explaining a part of the first screwing portion A in an enlarged manner. is there. In FIG. 5, the angle is based on the lower end of the male screw 22.
As illustrated, in the present embodiment, the first screwing portion A is formed over a range of 360 degrees or more (specifically, about 720 degrees). In the first screwing portion A, the lead P1 of the female screw 17 provided in the inner plug 10 or the separation portion 12 is formed to be larger than the lead P2 of the male screw 22 provided in the upper lid 20 or the support portion 28 . However, the relationship between these leads P1 and P2 is that the screw thread 22i of the male screw 22 on the upper lid 20 side is adjacent to the upper and lower screw threads 17j and 17k of the female screw 17 on the inner plug 10 at any circumferential position. It is set to fit in the 17 valleys or grooves (see, eg, FIGS. 6 (a) and 6 (c)). As a result, the screw thread 17j of the female screw 17 is fitted between the adjacent upper and lower screw threads 22h and 22i of the male screw 22 on the upper lid 20 side (see FIG. 6 (b) or the like).
Specifically, the pair of screw threads constituting the female screw 17 and the male screw 22 is a single thread (n = 1), the number of turns of the screw is m, and the larger lead is P1 (mm), the smaller The other lead is P2 (mm), and the thread width is W (mm). Specifically, the lead of the female screw 17 is P1, and the lead of the male screw 22 is P2. Further, the thread width W indicates an average value, and in the case where the thread has a linear slope, it means a peak width at half the height of the thread. Moreover, when the thread form of the internal thread 17 and the external thread 22 is the same, it becomes W = SW1 = SW2, but when these thread forms or thread widths are different, the first thread width of the larger one of these leads Is SW1 (mm), and the second screw thread width of the smaller lead is SW2 (mm), the average value, that is, W = (SW1 + SW2) / 2. The maximum difference PM regarding the amount of advance from the start of thread cutting to the end of thread cutting between the internal thread 17 and the external thread 22 is given by the lead difference ΔP = P1-P2 (mm) and PM = m × ΔP. Since the value obtained by subtracting the thread width is the upper limit,
PM = m × ΔP ≦ P1 / n−2W
As a result, the lead difference ΔP is
ΔP ≦ P1 / (n · m) -2 W / m
Given by In addition, in the case where thread shapes or thread widths of the internal thread 17 and the external thread 22 are different, the lead difference ΔP is more specifically,
ΔP ≦ P1 / (n · m) − (SW1 + SW2) / m
Given by
Thus, the inner plug 10 is formed such that the lead P2 of the male screw 22 provided on the support portion 28 of the upper lid 20 is smaller than the lead P1 of the female screw 17 provided on the separated portion 12 of the inner plug 10. At the time of opening, the engagement state of the first screwing portion A is biased, and a part of the separated portion 12 in the circumferential direction is preferentially lifted, and the separated portion 12 can be forced to be slightly inclined. As a result, shear stress is concentrated on a portion of the score (notch) 16 around the separation portion 12 which is preferentially lifted, and shearing is easily started from this portion and separation of the separation portion 12 is also facilitated. . That is, the separating portion 12 can be separated from the main body portion 11 with a relatively small force at the time of opening.
By securing the above lead difference ΔP to a certain degree or more, the separation portion 12 can be reliably lifted at one surrounding point, and the start of shearing can be facilitated.

  The inner plug 10 and the upper lid 20 thus configured are assembled to the container 1 as follows.

  After the contents are accommodated in the container 1, as shown in FIG. 2, the internal plug 10 is locked to the container 1 by fitting the annular recess 13 of the internal plug 10 to the opening 1 a of the container 1. In this state, the inside plug 10 completely seals the mouth 1 a of the container 1.

  The upper lid 20 is then screwed onto the container 1. That is, the female screw 21 of the upper lid 20 is screwed into the male screw 2 of the container 1. Then, the upper lid 20 is rotated (clockwise rotation) and is lowered, and as shown in FIG. 3, the inside of the lip portion 14 of the inner plug 10 is in sliding contact with the outer peripheral surface of the middle diameter cylindrical portion 20d. The female screw 21 provided on the peripheral wall portion 20 a is screwed into the male screw 2 provided on the opening 1 a of the container 1.

  At that time, the male screw 22 of the first cylindrical portion 20b of the upper lid 20 is forcibly engaged with the female screw 17 of the connecting cylindrical portion 12b of the inner plug 10, and the assembly of the first screwing portion A is performed. The screwing relationship between the male screw 22 of the first cylindrical portion 20b of the upper lid 20 and the female screw 17 of the connecting cylindrical portion 12b of the inner plug 10 (that is, the reverse screwing of the first screwing portion A) Since the screwing relationship between the female screw 21 of the portion 20a and the male screw 2 of the mouth portion 1a of the container 1 (that is, the forward screwing of the second screwing portion B), the male screw 22 The upper cover 20 and the first cylindrical portion 20b are lowered relative to the connecting cylindrical portion 12b so that the screw thread moves over the female screw 17, that is, while deforming the screw thread of the male screw 22 and / or the screw thread of the female screw 17. At this time, as described with reference to FIG. 4, the male screw 22 and the female screw 17 are formed in a bent shape at the first screwing portion A to facilitate their deformation and to facilitate fitting. Furthermore, because the leads of the external thread 22 and the internal thread 17 are different, when crossing over the thread, not all over at a time at the same time, but gradually over the top and engaging the separation portion 12 with the support portion 28 The load on the occasion is reduced.

By screwing the upper lid 20 to the container 1 as described above, at the timing when the male screw 22 gets over the female screw 17 at the first screwing portion A, the inside of the base of the connection cylindrical portion (second cylindrical portion) 12b of the separated portion 12 The circumferential surface 12q abuts on the tip outer peripheral surface 28q of the support portion 28 or the first cylindrical portion 20b, and the tip inner circumferential surface 12r of the connection cylindrical portion (second cylindrical portion) 12b and the support portion 28 or the first cylinder By contact with the base outer peripheral surface 28r of the portion 20b, the separated portion 12 and the support portion 28 are elastically fitted (see FIGS. 3, 7 and the like). As a result, since the separation portion 12 and the support portion 28 are fitted at the base and tip of the connection cylindrical portion (second cylindrical portion) 12b of the separation portion 12, the holding of the separation portion 12 by the support portion 28 is stabilized and the seal The effect also improves.
At the same time as the above, at the timing when the male screw 22 climbs over the female screw 17 at the first screwing portion A, the tip 23 of the lower end of the small diameter cylindrical portion 20e of the upper lid 20 is connected to the connecting cylindrical portion 12b of the inner plug 10 It is fitted into a recess 18 defined by 15. When the distal end portion 23 of the small diameter cylindrical portion 20e of the upper lid 20 is inserted into the recess 18 of the inner plug 10, the distal end inner circumferential surface 23p of the distal end portion 23 abuts on the base outer peripheral surface 12p of the connecting cylindrical portion 12b.

  Thus, the inside plug 10 is completely fitted in the opening 1a of the container 1, the female screw 21 of the upper lid 20 is screwed into the male screw 2 of the container 1, and the tip 23 of the small diameter cylindrical portion 20e of the upper lid 20 is It will be in the state contact | abutted on the connection part 15 (refer FIG. 7 etc.). And goods are distributed in the state where upper lid 20 was tightened to a predetermined set position to container 1.

  The opening or closing performed by the purchaser or user of the stoppered container 100 is performed by rotating (counterclockwise rotation) so as to loosen the upper lid 20 relative to the container.

  When the upper lid 20 is loosened, that is, when it is rotated counterclockwise, the second screwing portion B functions, and the upper lid 20 is moved up along the external thread 2 of the container 1 and, accordingly, the separated portion of the inner plug 10 12 are rotated counterclockwise and moved up relative to the support 28. At this time, since the first screw portion A can not be tightened any more, the first cylindrical portion 20b of the upper lid 20 and the separated portion 12 of the inner plug 10 integrally rotate. When the upper lid 20 and the inner plug 10 are assembled, even if the tightening of the first screwing portion A is insufficient, the second screwing portion B is loosened by the upper lid 20, whereby the first screwing portion The first screwing portion A is tightened so that A separates and the separated portion 12 is drawn into the upper lid 20, and the first cylindrical portion 20b of the upper lid 20 and the separated portion 12 of the inner plug 10 are integrated. Rotate etc.

  By the way, in the present embodiment, since the lead P1 of the female screw 17 of the inner plug 10 is formed to be larger than the lead P2 of the male screw 22 of the upper lid 20, as shown in FIG. The upper surface of the lower end abuts on the lower surface of the lower end of the internal thread 17 of the plug 10. That is, the lower end of the male screw 22 of the upper lid 20 partially comes into contact with a part of the female screw 17 of the inner plug 10 at the contact portion. Furthermore, when the upper lid 20 is rotated, the main body portion 11 of the inside plug 10 is locked to the container 1, and hence the separation portion 12 is separated from the main body portion 11 around the score (notch) 16 as shown in FIG. As a result, the separation portion 12 is slightly inclined and the score (notch) 16 is sequentially sheared in the circumferential direction as the upper lid 20 rotates. As shown in FIG. 9, the completely sheared separated portion 12 is returned from the slightly inclined state to the non-tilted state and moved up integrally with the upper lid 20. That is, the opening 10a is formed in the inside plug 10, and the container 1 or the inside plug 10 is opened.

  At the time of the above-mentioned opening, a noise is generated with the start and expansion of the shearing or breaking of the score (notch) 16, and the torque necessary for the rotation of the upper lid 20 is sharply reduced, so that the clear opening is achieved. It can produce a feeling.

  Thereafter, as shown in FIG. 10, the separated portion 12 of the inside plug 10 is separated from the container 1 in a state of being locked to the upper lid 20 and the opening 10 a of the main body portion 11 of the inside plug 10 left in the container 1 Is completely open. Thereby, the contents in the container 1 can be poured.

The separated portion 12 after opening is loosened by screwing between the male screw 22 of the upper lid 20 and the female screw 17 of the separated portion 12 and the connecting cylindrical portion 12b being held between the first cylindrical portion 20b and the small diameter cylindrical portion 20e. Is securely held on the upper lid 20.
Explaining this point in more detail, because the lead P2 of the male screw 22 and the lead P1 of the female screw 17 are different in the first screwing portion A, the separated portion 12 and the support portion 28 are also separated after the fitting. There is a tendency that the 12 is easy to tilt in the support portion 28, is easy to rattle, and is easy to loosen. Therefore, as shown in FIG. 7, a structure in which the base outer peripheral surface 12p and the base inner peripheral surface 12q of the separated portion 12 are sandwiched by the tip outer peripheral surface 28q of the support portion 28 and the tip inner peripheral surface 23p on the small diameter cylindrical portion 20e side. By doing this, the separation portion 12 can be firmly fixed between the support portion 28 and the small diameter cylindrical portion 20e.

  When the upper lid 20 is fastened to the opening 1a of the container 1 in order to close the container 1 after partial use of the contents, the tip 23 of the small diameter cylindrical portion 20e of the upper lid 20 has a cylindrical shape of the main body 11 of the inner plug 10. The lip 14 of the cylindrical base 11a contacts the outer peripheral surface of the middle diameter cylindrical portion 20d of the upper lid 20 and the lower surface of the ceiling wall 20f. At the same time, the contents of the container 1 are sealed.

  In the above embodiment, it is assumed that the container 1 is a plastic bottle or other bottle shape, but the container 1 may be other synthetic resin, glass, metal, and a bag made of a film -Shaped members may be provided with a mouth or may be a polyhedron or other paper pack.

  Further, although the upper lid 20 is screwed to the container 1 in the above embodiment, the upper lid 20 may be screwed to the outer periphery of the main body portion 11 of the inside plug 10. That is, instead of the external thread 2 of the mouth portion 1a of the container 1, an external thread is provided on the outer periphery of the main body portion 11, and the second threading portion B is configured by the external thread on the inner plug 10 side and the internal thread 21 of the peripheral wall portion 20a. be able to.

  In the above embodiment, the upper lid 20 is screwed to the container 1 after assembling the inner plug 10 to the container 1, but after the inner lid 10 is screwed to the upper lid 20, the assembly of the upper lid 20 and the inner plug 10 is assembled. It can also be fitted in the mouth 1 a of the container 1.

  In the above embodiment, when the purchaser opens the stoppered container 100, the upper lid 20 is rotated (counterclockwise rotation) so as to loosen the container, but the stopper 100 is opened. At the time of plugging, the upper lid 20 can also be rotated (clockwise rotation) so as to tighten the container with respect to the container, and in this case, the first screwing portion A operates in the loosening direction. Is forced down to the upper lid 20. Under the present circumstances, it is not necessary to make the internal thread 17 or the external thread 22 into a bent shape, and by forming the lead P1 of the internal thread 17 to be larger than the lead P2 of the external thread 22 of the upper lid 20, the upper end of the external thread 22 is formed on the internal thread 17. Hitting a part. As a result, the separation portion 12 is sheared in a part of the circumferential direction of the score 16, and along with the rotation of the upper lid 20, the score 16 is sequentially sheared along the circumferential direction, and the completely sheared separation portion 12 is It is moved up integrally with 20 and the inside plug 10 is opened.

  In the above embodiment, the lead P2 of the male screw 22 of the upper lid 20 is smaller than the lead P1 of the female screw 17 of the inner plug 10, but the lead P2 is larger than the lead P1. You may In this case, in FIG. 5, the upper end of the screw 22 abuts on the screw 17, and the lower end of the screw 22 is separated from the screw 17.

In the above embodiment, although the female screw 17 and the male screw 22 constituting the first screwing portion A are single-threaded screws, the female screw 17 and the male screw 22 may be double-threaded screws or three or more threads. Can.
For example, in the case where the female screw 17 and the male screw 22 have three or more threads, one lead of the female screw 17 and the male screw 22 is different from the other lead. At this time, for example, by adjusting the respective lower end positions of three or more threads forming the female screw 17 instead of simply making the lead of the female screw 17 relatively large, the female screw at one point around the separated portion 12 Adjust so that 17 and the external thread 22 come into contact with each other.

  In the above embodiment, although the internal thread 17 and the external thread 22 constituting the first screwing portion A consist of a continuous thread, one of the internal thread 17 or the external thread 22 is divided into a plurality of peak portions. It can also be done. Furthermore, it is desirable that the length or angle of the female screw 17 or the male screw 22 be approximately one or more laps at the initial stage when both are engaged, but such a lap of thread is appropriately adjusted according to the application and angle. can do.

DESCRIPTION OF SYMBOLS 1 ... Container, 1a ... Opening part 2 ... Male screw, 3 ... Lid assembly, 10 ... Plug inside, 10a ... Opening, 11 ... Main body part, 11a ... Tubular base, 11b ... Flange part, 11c ... Annular wall part, 12 separation part 12a sealing body 12b connection cylinder part 12c flange 13 annular recess 14 lip part 15 connection part 16 notch (score) 17 internal thread 18 recess 20: upper cover 20a: peripheral wall portion 20b: first cylindrical portion 20c: large diameter cylindrical portion 20d: medium diameter cylindrical portion 20e: small diameter cylindrical portion 20f: ceiling wall 21: female screw 22: male screw 23: tip portion, 28: support portion, 100: container with a stopper, A: first screwing portion, B: second screwing portion

Claims (9)

And an upper lid attached to the container so as to cover the inner plug.
The upper lid has a support that captures the separated portion upon opening and separates the separated portion from the inner plug,
The separation portion and the support portion are connected by a first screwing portion provided between the separation portion and the support portion,
The lead of the thread provided on the support side of the first screwing portion and the lead of the thread provided on the separation portion side of the first screwing portion are different. Stopper container.   The inner-plugged container according to claim 1, wherein the pair of screw threads constituting the first screwing portion is a single thread screw.   The inside-plugged container according to claim 2, wherein the single-threaded screw is formed over a range of 360 degrees or more. When the pair of screw threads constituting the first screwing part is an n-slot screw with a number m of turns, the larger lead is P1, the smaller lead is P2, and the screw thread width is W, lead The difference ΔP = P1-P2 is
ΔP ≦ P1 / (m · n) −2 W / m
A stoppered container according to any one of the preceding claims, characterized in that The second screwing portion provided between the upper lid and the container or the inner plug enables the upper lid to be attached and detached.
The container with a stopper according to any one of claims 1 to 4, wherein the second screwing portion is in a reverse screwing relationship with the first screwing portion.   The ridges of the pair of screws constituting the first screwing portion are formed in a burr shape which facilitates pushing the separated portion into the support portion rather than pulling out the separated portion from the support portion. The stoppered container according to claim 5, characterized in that:   The inside stoppered container according to any one of claims 1 to 6, wherein the separation portion and the support portion are elastically fitted at places other than the first screwing portion. The support portion has a first cylindrical portion extending downward from the lower surface of the ceiling wall of the upper lid,
The separation portion has a second cylindrical portion extending upward from a sealing body connected to the main body portion of the inner plug and surrounding the first cylindrical portion from the periphery;
The separation portion and the support portion are fitted together by the second cylindrical portion and the first cylindrical portion being in contact with each other at a portion other than the first screwing portion. Inside the container with a stopper. The upper lid has, outside the second tubular portion, a third tubular portion surrounding the second tubular portion from the periphery in a state where the upper lid is attached to the container,
The tip end of the third cylindrical portion abuts on at least a part of a connecting portion between the cylindrical main body portion of the inner plug and the separation portion in a state where the upper lid is attached to the container. A container with an inner stopper according to claim 8.

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