JP4151755B2 - Tube container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tube container capable of discharging contents stored in a flexible storage unit by pressing the storage unit.
[0002]
[Prior art]
Conventionally, a tube container has a cylindrical body, one end of which is pressed from the outside in the diametrical direction and sealed in a plate shape, and the other end is closed to be joined to the peripheral edge thereof. A storage part is formed in the body part by being closed by the part. A discharge hole that communicates the inside and outside of the storage portion is provided at the tip of a discharge cylinder that protrudes outward from the center of the closed portion so as to discharge the contents. In this type of conventional tube container, since the closed portion is provided with rigidity, the closed portion is naturally difficult to deform, and it is difficult to sufficiently deform the body portion in the vicinity of the closed portion. Therefore, even if the contents remain near the closed portion of the tube container, the contents cannot be discharged without leaving them, and a relatively large amount of contents cannot be used.
[0003]
In order to improve such a point, a stopper having a wide-opening portion from which the contents in the storage portion can be taken out, and a small hole that can be screwed into the wide-opening portion and communicates with the inside and outside of the storage portion. The contents in the storage part can be easily removed by pressing the storage part to discharge the contents from the small hole or removing the plug so that the contents can be taken out from the wide opening part. There is known a tube container that can be used up almost completely (see Japanese Patent Application Laid-Open No. 2001-158448).
[0004]
In such a tube container, the screwing stop position of the plug body with respect to the trunk portion when the plug body is attached is set to a certain position so that the trunk portion has a front surface and a back surface and the orientation of the plug body matches this. A positioning mechanism is provided that can do this. Specifically, by mounting the plug body around the wide opening portion and then rotating, the outer peripheral wall of the wide opening portion is turned into three L-shaped engaging grooves from the inner peripheral wall of the plug body. The three ribs formed by protruding are engaged with each other, and at this time, the rib is abutted against the engaging groove to prevent further rotation of the plug body, and thereby the plug body with respect to the wide opening portion. The stop position is positioned.
[0005]
[Problems to be solved by the invention]
By the way, in the said conventional tube container, since it was trying to position by the abutting of an engaging groove and a rib, if the abutting area of the engaging groove and a rib regarding positioning is one place, it is It was narrow, and there was a risk that the rib would overrun the engagement groove. In consideration of such fears, the tube container is formed with a plurality of engagement grooves and a plurality of ribs in order to ensure a large abutting area. In addition, there is a problem in that the cost of a mold such as a mold for molding a plug is increased.
[0006]
The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a tube container with a simple structure that can reliably prevent overrun beyond the screwing stop position.
[0007]
[Means for Solving the Problems]
A tube container according to the present invention includes a flexible storage part, a wide-opening part from which the contents in the storage part can be taken out, and a removable opening provided in the wide-opening part. A tube body having a small hole that communicates, and the contents are discharged from the small hole when the storage portion is pressed, or removed from the wide opening portion by removing the plug body, A convex screw thread is formed around the wide opening portion to form a single convex screw thread, and a single concave screw thread that is recessed into the inner peripheral wall of the plug and screwed into the convex screw thread is formed into the convex screw thread. formed in the same length as the, among the end portion opposite to the leading end of each screw Article the both screw protrusion starts screwing, the end of the projecting threads of said concave screw protrusion start Wide opening that locks the peripheral wall of the plug inside A part-side restraining part is formed by protruding from the wide opening part corresponding to a convex thread, and at the terminal part of the concave thread, the convex thread start end is locked to the convex thread. A plug-side restraining portion for restraining the screwing movement is formed by sealing the concave thread on the peripheral wall of the plug body, and the start end of the concave thread and the start end of the convex thread are respectively the wide opening portion. by being engaged simultaneously side stop portion and to the plug-side restraining portion both, characterized in that so as to position the engaged stop position of the stopper with respect to the wide-mouth opening.
[0008]
Further, the plug body is detachably engaged between the wide opening portion and the plug body at a position immediately before the plug body is positioned on the wide opening portion by the pair of restraining portions. It is characterized in that an engaging portion for notifying that the position is positioned is provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of a tube container according to the present invention will be described in detail with reference to the accompanying drawings. The tube container 1 of the present embodiment mainly includes a flexible storage portion 2, a wide opening portion 3 that can take out the contents stored in the storage portion 2, and the wide opening portion 3. A plug body 5 having a small hole 4 that is detachably attached and communicates the inside and outside of the storage section 2, and a closing projection 6 that is formed integrally with the plug body 5 so as to be rotatable and closes the small hole 4. It comprises an outer lid 7 provided.
[0010]
The storage portion 2 includes a cylindrical body portion 8 and a shoulder portion 9 which is molded and fixed to an opening on one end side thereof and covers the opening portion, and the other end side opening of the body portion 8 is pressed from the outside in the diameter direction. Then, it is sealed in a plate shape, and the contents are accommodated therein. A cylindrical wide-mouth opening 3 projects from the shoulder 9 on the opposite side of the body 8 and communicates the inside and outside of the storage 2. And the trunk | drum 8 of this accommodating part 2 is formed with flexible members, such as a synthetic resin and a synthetic rubber, and the shoulder part 9 and the wide-mouth opening part 3 have the rigidity which is hard to deform | transform even if the trunk | drum 8 is pressed. It has. The wide-mouth opening 3 has an inner diameter that can insert a finger to scoop up the contents.
[0011]
The plug body 5 includes a cylindrical inner tube portion 10 that is screwed into the wide opening portion 3, and a flange portion 11 that is formed inward of the inner tube portion 10 and is inserted into the wide opening portion 3. A disc-shaped closing plate 12 that covers the upper end of the inner cylinder portion 10, an outer cylinder portion 13 that hangs around the inner cylinder portion 10 around the outer peripheral edge of the closing plate 12, and a partial side edge of the outer cylinder portion 13 And the outer lid 7 connected to each other through a hinge 14 are integrally formed. In the central portion of the closing plate 12, a small hole 4 that communicates the inside and outside of the storage portion 2 with the plug 5 attached to the wide opening 3 and presses the body portion 8 to discharge the contents. Is provided. On the inner side of the outer lid 7, there is provided a closing protrusion 6 that is inserted into the small hole 4 in a closed state to close the small hole 4. The closing protrusion 6 comes out of the small hole 4 by opening the outer lid 7, and the small hole 4 is opened. A recess 15 is formed by chamfering a part of the outer peripheral edge of the plug body 5 so that the outer cover 7 can be hooked by the recess 15. It can be opened easily.
[0012]
When a large amount of content is stored in the storage portion 2, the tube container 1 presses the body portion 8 of the storage portion 2 and removes the content from the small hole 4 provided in the plug body 5. Discharge. At this time, the content can be easily discharged from the small hole 4 by an appropriate amount by adjusting the pressing force of the body portion 8. On the other hand, when the contents in the storage portion 2 are reduced and remain only in the vicinity of the shoulder portion 9 and can no longer be discharged even when the body portion 8 is pressed, the plug body 5 is removed, and the finger from the wide opening 3 Etc. can be inserted and the remaining contents can be taken out. Therefore, it can be used without leaving the contents in the tube container 1.
[0013]
In particular, in the present embodiment, the inner peripheral wall 16 of the inner cylindrical portion 10 of the plug 5 is formed with an inner diameter R1 that separates a slight gap S from the wide opening portion 3, as shown in FIG. Is done. Further, the inner cylinder portion 10 has a lip having an inner diameter larger than the inner diameter of the inner peripheral wall 16 at a lower end portion that is outside the inner peripheral wall 16 and close to the shoulder portion 9 when attached to the wide opening portion 3. A portion 17 is formed. A positioning mechanism described below is provided between the plug body 5 and the wide opening portion 3 in order to stop the screwing of the plug body 5.
[0014]
A single convex thread 18 is formed around the wide opening 3 so as to go around. The convex thread 18 has an outer diameter smaller than the inner diameter of the rim 17 so that the plug 5 can be attached to the wide opening 3 and larger than the gap S. It is formed by protruding outward from the wide opening 3. That is, the convex thread 18 is formed as a thread having an “outer diameter R2” larger than the inner diameter R1 of the inner peripheral wall 16. On the other hand, the inner peripheral wall 16 of the plug body 5 also circulates around the inner peripheral wall 16 to form a single concave thread 19 that is the same length as the convex thread 18 and is screwed with the convex thread 18. The concave thread 19 is formed as a thread having a “valley diameter R3” corresponding to the convex thread 18 having an “outer diameter R2” larger than the inner diameter R1 of the inner peripheral wall 16 by recessing the inner peripheral wall 16. The one end reaches the mouth edge 17 and communicates with the mouth edge 17. Then, the plug 5 can be screwed into the wide opening 3 by covering the plug 5 with the wide opening 3 from the edge 17 and screwing the concave thread 19 with the convex 18. Thus, the tube container 1 can be sealed.
[0015]
In particular, the convex thread 18 and the concave thread 19 on the opposite side of the starting end 18a, 19a of each thread 18 and 19 where the convex thread 18 and the concave thread 19 start to be engaged with each other, respectively, and the terminal end 18b of each concave thread 19 are provided. , 19b, the convex thread 18 will be described first. The end 20b of the convex thread 18 is formed with a convex portion 20 as a wide opening portion side restraining portion for restraining the screwed movement of the concave screw strip 19. Is done. In the present embodiment, the convex portion 20 is formed on the lower side of the convex screw strip 18 so as to protrude from the wide-mouthed aperture portion 3 at the same height as the convex screw strip 18. And this convex part 20 is the level | step difference which protruded from the wide-mouth opening part 3 with respect to the formation direction of the convex thread 18 at least, ie, the screwing direction of the plug body 5. FIG. In the example of illustration, although the convex part 20 is integrally formed with the convex thread 18 in series, it is needless to say that it may be formed separately from the convex thread 18.
[0016]
Then, when the plug body 5 attached to the wide opening portion 3 is screwed in according to the threaded engagement of the convex thread 18 and the concave thread 19, the mouth edge 17 having an inner diameter larger than the “outer diameter R 2” of the convex thread 18. Is approached toward the shoulder 9 beyond the convex portion 20, and then, when the start end portion 19a of the concave thread 19 reaches the end portion 18b of the convex screw 18, as shown in FIG. Since the height of the raised portion from the wide opening portion 3 is larger than the size of the gap S, the inner peripheral wall 16 in the vicinity of the start end portion 19a of the concave thread 19 hits the convex portion 20 that is a step. Accordingly, the further screwing movement of the concave thread 19 is restrained.
[0017]
On the other hand, when the concave thread 19 is described, a closing part 21 is formed at the end 19b of the concave thread 19 as a plug-side restraining part for restraining the screwing movement of the convex thread 18. In this embodiment, the blocking portion 21 is formed by sealing the end of a concave thread 19 formed by recessing the inner peripheral wall 16 with the inner peripheral wall 16. And this blockade part 21 is a level | step difference which protruded from the concave thread 19 with respect to the formation direction of the concave thread 19, ie, the screwing direction of the plug body 5 at least. In the illustrated example, the blocking portion 21 is continuously formed on the wall surface of the inner peripheral wall 16, but it is needless to say that the sealing portion 21 does not have to be continuous with the wall surface of the inner peripheral wall 16. Then, as shown in FIG. 6, the start end portion 18a of the convex thread 18 that reaches the terminal end 19b of the concave thread 19 is stepped as the plug 5 attached to the wide opening 3 is screwed. It will come into contact with the blocking portion 21 and be locked, thereby preventing further screwing movement of the convex thread 18.
[0018]
Since the convex thread 18 and the concave thread 19 are formed with the same length, the start ends 18a and 19a of the both threads 18 and 19 are convex at the screwing stop position of the plug body 5, respectively. Simultaneously locked to both the part 20 and the blocking part 21, the screwing stop position of the plug body 5 with respect to the wide opening part 3 is positioned by these. Thus, a large and wide abutting area when positioning the screwing stop position of the plug body 5 is ensured by a simple configuration in which the protrusions 20 and the blocking portions 21 are provided corresponding to the respective screw lines 18 and 19. Can do. Therefore, the overrun of the plug body 5 can be reliably prevented. In particular, since a sufficient abutting area can be obtained even with a single thread, the plug body 5 can be reliably positioned while achieving a cost reduction of the mold compared to the case where a plurality of threads are formed.
[0019]
Further, the convex portion 20 which is the wide opening portion side restraining portion is raised by the equivalent of the convex screw strip 18, and the blocking portion 21 which is the stopper side restraining portion is the concave screw thread on the inner peripheral wall 16 of the plug body 5. 19 is sealed, and as shown in FIG. 5, R1 to R2 that are the formation ranges of these screw strips 18 and 19 without increasing the gap S between the peripheral wall 16 of the plug body and the wide opening 3. A positioning mechanism can be provided inside, and it is possible to prevent the outer dimension of the plug body 5 from increasing due to the positioning mechanism.
[0020]
Further, between the wide opening portion 3 and the plug body 5, the plug body 5 is positioned by being detachably engaged at a position immediately before the plug body 5 is positioned at the wide opening portion 3. An engagement portion is provided for informing the user with sound or touch. In the present embodiment, the wide-opening portion 3 has a pair of engagements by projecting upward from the shoulder 9 side at a position directly below the convex portion 20 and around the wide-opening portion 3. A protrusion 22 is formed, and an outer edge of the plug body 5 is provided on the outer side of the inner cylinder portion 10 at the front end of the concave screw thread 19 in the screwing direction of the plug body 5 and on the opposite side around the inner cylinder portion 10. A pair of riding protrusions 23 are formed projecting downward from the portion 17.
[0021]
Then, using the gap G between the convex thread 18 and the concave thread 19 along the vertical direction of the wide opening 3, the riding protrusion 23 rides from the lower end to the upper end of the engaging protrusion 22 to engage with each other. It comes to match. Then, it is notified that the plug body 5 is positioned in the wide opening portion 3 by the feeling and sound when the riding protrusion 23 is engaged with the engaging protrusion 22. Thereby, excessive screwing of the plug 5 can be prevented. In addition, the engagement portion holds the plug body 5 at the positioning position by the engagement, and the engagement is released by turning the plug body 5 in the loosening direction.
[0022]
【The invention's effect】
In short, the tube container according to the present invention has a simple structure in which the wide opening portion side stopper portion and the plug body side stopper portion are provided in correspondence with the concave screw thread and the convex screw thread. It is possible to ensure a large and wide abutting area when positioning the stop position, and to reliably prevent the plug body from overrunning beyond the screw stop position . In particular, even with a single thread, a sufficient abutting area can be obtained, so that the plug can be reliably positioned while achieving cost reduction of the mold. Since it is a restraining portion that is raised by being equivalent to a convex thread and is formed by blocking the concave thread, the outer dimension of the plug can be kept small.
[0023]
Moreover, the excessive screwing of a plug can be prevented by the engaging part which alert | reports that a plug is positioned.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a preferred embodiment of a tube container according to the present invention.
2 is a cross-sectional side view of a main part of the tube container of FIG. 1. FIG.
3 is a side cross-sectional view of a main part of a plug constituting the tube container of FIG. 1. FIG.
4 is a side sectional view of an essential part showing a use state of the tube container of FIG. 1. FIG.
5 is a schematic diagram for explaining a threaded portion of a convex thread and a concave thread of the tube container of FIG. 1. FIG.
6 is an explanatory view in which a thread portion is developed in order to explain the positioning action of the plug body in the tube container of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tube container 2 Storage part 3 Wide-mouth opening part 4 Small hole 5 Plug body 16 Inner peripheral wall 18 Convex thread 19 Concave thread 18a, 19a Starting end part 18b, 19b of each thread | stripe End part 20 Convex part 21 Sealing portion 22 Engaging projection 23 Riding projection

Claims (2)

A plug having a flexible storage part, a wide-opening part from which the contents in the storage part can be taken out, and a small hole that is detachably provided in the wide-opening part and communicates with the inside and outside of the storage part In the tube container in which the storage portion is pressed and discharged from the small hole, or the plug body is removed and taken out from the wide opening portion,
A convex screw thread is formed around the wide opening portion to form a single convex screw thread, and a single concave screw thread that is recessed into the inner peripheral wall of the plug and screwed into the convex screw thread is formed into the convex screw thread. formed in the same length as the, among the end portion opposite to the leading end of each screw Article the both screw protrusion starts screwing, the end of the projecting threads of said concave screw protrusion start And forming a wide-opening-portion-side restraining portion that locks the peripheral wall of the plug body in the plug and restrains the screwed movement of the concave-threaded strip from the wide-opening portion, and is raised from the wide-opening portion, corresponding to a convex thread. At the end of the concave thread, a stopper side locking part that locks the screw thread movement of the convex thread by locking the convex thread start end, and the concave thread is sealed by the peripheral wall of the stopper. formed, each beginning of beginning and convex threads of these concave screws Article, the wide mouth opening side restraining portion and the same time the plug side restraint both By being engaged, the tube container characterized in that so as to position the engaged stop position of the stopper with respect to the wide-mouth opening. Between the wide opening portion and the plug body, the plug body is removably engaged by the pair of restraining portions immediately before being positioned on the wide opening portion, thereby positioning the plug body. The tube container according to claim 1, further comprising an engaging portion that notifies that the operation is performed.

Images