JP2014000997A - Capped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem of the prior art in the fitting between a cap and a container as is easily loosened by vibrations or the like when they are fastened by a thread engagement.SOLUTION: A capped container includes: a container body having an external thread in the outer circumference of a mouth portion; and a cap having an internal thread in the inner circumference for engaging with said outer thread so that the cap is mounted on and de-mounted from the mouth portion of the container body by the screw fitting. When the cap is mounted on the mouth of the container body, the open end of the mouth portion in the container body comes into tight contact with the inner face of the top portion of the cap. In the container body, an annular projection on the container body side is formed to rise on the apex side from the terminal end portion of the outer screw in the outer circumference of the mouth portion. On the side closer to the apex than the terminal end of the inner circumference of the cap on the apex side of the inner screw, there is formed a cap-side annular ridge which can be ridden over by the container body side annular ridge when the cap is threaded over the mouth portion of the container body and which engages each other at the position where the container body side annular ridge rides over, thereby to enhance the sealability at the fitting time.

Description

  The present invention relates to a container with a cap having a cap that closes an opening formed in the mouth of the container body.

  Conventionally, in a container with a cap, as a fastening structure between the container body and the cap, a method using a screw or a method of fitting using an annular ridge is generally known (not shown).

  Further, in the fastening method by fitting using the annular ridge formed on the outer peripheral surface of the mouth and the inner peripheral surface of the cap, one or both of the cap part and the container body are elasticized by a constant axial pressure. The container is locked and brought into close contact when the convex annular ridge of the container enters and closely contacts the recess provided at the edge of the cap, or when the convex part gets over one of the convex parts. The

  In the fastening structure with screws, in order to maintain the airtightness inside the container, a packing material is disposed at a part of the contact portion of the two members, and the cap and the container main body are screwed together. It is separated from the outside and sealed (not shown).

  When using a screw to fasten the container and the cap, align the screw position between the screw provided outside the opening of the container and the inner screw that engages with the outer screw inside the cap. By rotating one of the container and the cap in a certain direction, the thread is guided in the thread groove and moved in the circumferential direction, so that the cap and the container are fastened while moving in the axial direction.

  In the case of a container having only a fastening structure with screws, when vibration is applied to the container after fastening, the frictional resistance of the screw is lowered by the vibration, and the fastening structure of the container and the cap is loosened. There was a risk that the sealing performance of the cap was lowered and the cap could be removed in some cases.

  As a method of preventing the accidental removal of the cap as described above and preventing the screw from loosening, there is a known mechanism for preventing the screw from returning at the end of the screw by attaching a convex locking tool to the end of the screw-in portion. (Patent Document 4).

  Also, in order to increase the looseness and friction of the screw, a structure is known in which a plurality of screw threads having different lead angles are arranged to increase the frictional force due to the fastening of the screw, to prevent loosening and to improve the adhesion. (Patent Document 1).

  In addition, an annular ridge is provided at the end of the screwed portion, and a mechanism is provided to prevent the screw from loosening when the annular ridge of the cap portion gets over the annular ridge by screwing the cap. (Patent Documents 2 and 3), thereby preventing the cap from loosening and preventing the play (Patent Document 5).

  However, even when a means for locking the cap or a means for increasing the fastening force by changing the lead angle of the screw at the terminal end or below the screw is used, the contents of the container body are liquid. In such a case, the contents may spill onto the threaded portion or the like of the container opening portion when the container is opened due to the contents blowing up to the vicinity of the cap due to external vibration or the like.

  As a method for preventing this, a structure having a double lid is used. Or the method of providing the concentric inner ring smaller than the diameter of a container main body inside a cap is known.

  However, while the method using the double lid can reliably prevent the contents from spilling, in the work that requires quick movement such as an experiment, the work of removing the lid after opening the cap, It is complicated.

  Further, even in the method using the inner ring, a gap is often generated between the container and the inner ring, and the adhesion may be inferior.

PCT / JP / 2009/004276 JP 2000-109104 A JP S63-107946 JP 2003-12517 A

  The present invention has been made to solve the above-mentioned problems, and while the cap and the container are fastened by a simple fastening structure, the inside of the container is sufficiently sealed and the container is opened. It is an object of the present invention to provide a container with a cap that prevents the contents from leaking outside the opening of the container main body.

  In order to solve the above-mentioned problems, the present invention provides a container main body in which an outer screw is formed on the outer peripheral portion of the mouth and an inner screw that is screwed to the outer screw on the inner peripheral surface to form the mouth of the container main body. With a cap to be crowned and detached by screw fitting, and when the cap is crowned on the mouth of the container body, the opening end of the mouth of the container body is in close contact with the inner surface of the top of the cap The container body has an annular container body-side annular ridge projecting from the terminal end of the outer screw on the outer peripheral surface of the mouth head, and the cap has an inner peripheral surface. The cap sides on which the container body-side annular ridges can get over and engage with each other at the positions over which the container body-side annular ridges are able to get over when screwed into the top of the container body on the top side of the top side end of the inner screw An annular ridge is formed It is characterized in.

  Further, the container body of the present invention is characterized in that a container body-side annular ridge having at least one intermittent portion protrudes from the terminal portion of the outer screw on the outer peripheral surface of the oral head at the top side. To do.

  Furthermore, the present invention provides the container body-side annular ridge when the container body-side annular ridge is covered with the cap and the container-body-side annular ridge is overcome and engaged with the cap-side annular ridge. Since the opening edge of the part is formed at a position in close contact with the top inner surface of the cap, the adhesion between the cap and the container body is enhanced.

  Furthermore, the present invention relates to the lead angle of the outer screw formed on the outer peripheral portion of the mouth of the container body. The lead angle of the inner screw formed on the inner peripheral surface of the cap is the same, and at least the cap of the container main body is screwed into a crown so that the container main body side annular ridge passes over the cap side annular ridge. The lower surface of the outer screw and the upper surface of the inner screw are brought into close contact with each other at least in part, so that the cap is reliably crowned at a predetermined position without rattling.

  In addition, the container with a cap according to the present invention abuts the inner surface along the opening end of the mouth of the container body when the crown of the top of the container is covered with the mouth of the container body. In the case where an inner ring is formed to sandwich and support the vicinity of the opening end of the mouth of the container body between the inner side and the inner surface, the inner and outer peripheral surfaces of the mouth can be sandwiched and supported. .

  Further, the close contact portion of the top of the cap at the mouth of the container body is thinly formed and given elasticity, thereby supporting the pressure and increasing the sealing performance.

  Furthermore, an annular groove or an annular ridge is formed on the opening end surface of the mouth of the container body of the present invention, and when the cap is crowned on the top inner surface of the cap, the mouth of the container body By forming the annular ridges or annular ridges that are fitted to the annular ridges or annular ridges formed on the opening end face, it is possible to obtain further adhesion, and this unprecedented adhesion By having it, it can also be used for other uses that are not conventional.

  According to the present invention, the inner annular ridge of the cap is arranged at a position near the top plate of the inner wall of the cap, and the cap is overlaid and locked by the annular ridge arranged on the container mouth, and the inner ring The container opening is sandwiched by the inner wall of the cap to improve the adhesion between the inner ring and the container, so that the screw part is not contaminated with the contents when the container is opened, and the cap after opening Even when the container is placed on a table or the like, since the close contact portion between the container and the cap is inside the cap, it is possible to avoid inadvertent touching by hand.

1 is an external view of a preferred embodiment according to the present invention. The longitudinal cross-sectional view of embodiment shown in FIG. The cross-sectional enlarged view of the state which made the container main body cover the cap about embodiment shown in FIG. External view of another embodiment according to the present invention Sectional view of the embodiment shown in FIG. FIG. 5 is an enlarged cross-sectional view of the embodiment shown in FIG. 4 in a state where a cap is put on the container body.

  Below, based on drawing, it demonstrates based on preferable embodiment of this invention.

  FIG.1 and FIG.4 is an external view about preferable embodiment of the container with a cap which is this invention, respectively.

  The present embodiment is a container used for temporarily storing collected samples (body fluid, tumor, blood, tissue, etc.). Due to its nature, for example, in the medical field and research field, external bacteria are used. In order to prevent contamination with chemical substances, etc., and to prevent biohazards due to scattering of collected samples to the outside, high sealing performance is required. Although it is about a container that can be easily opened and closed, it is not limited to this embodiment as long as it is a container that requires similar sealing performance and screw fitting.

  2 and 5 are cross-sectional views in a state where the container body 2 and the cap 1 are detached, and FIGS. 3 and 6 are cross-sectional views in a state in which the cap body 1 is covered with the container main body 2. Is composed of, for example, a bottomed, elongated cylindrical container main body 2 and a cap 1 that is detachably crowned on the head 20, and an outer screw 21 is formed on the outer periphery of the mouth 20 of the container main body 2. In addition, an inner screw 15 that is screwed onto the outer screw 21 is formed on the inner peripheral surface of the cap 1, and the cap 1 is crowned and detached by screw fitting with the mouth 20 of the container body 2.

  Further, when the cap 1 is put on the cap 1 and the mouth 20 of the container body 2, the open end 23 of the mouth 20 in the container body 2 is in close contact with the top inner surface 13 of the cap 1.

  Furthermore, in the case of the container with a cap shown in FIGS. 1 to 3, the container body 2 has an annular container body-side annular ridge 22 on the top side from the terminal portion of the outer screw 21 on the outer peripheral surface of the oral head 20. When the cap 1 is screwed into the cap 20 of the container body 2 on the top side of the top end of the inner screw 15 formed on the inner peripheral surface of the cap 1, the container body side annular projection is provided. The cap-side annular ridges 12 are formed so that the ridges 22 can be crossed over and engage with each other at the hop-over positions.

  Furthermore, in the present embodiment, when the container body-side annular ridge 22 is engaged with the cap-side annular ridge 12 over the container body-side annular ridge 22 by covering the cap 20 with the cap 1. In addition, the opening end 23 of the mouth 20 of the container body 2 is formed at a position where it abuts against the top inner surface 13 or the annular ridge 17 in the cap 1.

  In addition, the lead angle of the outer screw 21 formed on the outer peripheral portion of the mouth head 20 in the container body 2 (35 degrees in the present embodiment) and the lead angle of the inner screw 14 formed on the inner peripheral surface of the cap 1 are They are equally formed, and a so-called backlash is formed between the outer screw 21 of the container body 2 and the inner screw 14 of the cap 1 so that the screw can be smoothly inserted and rotated. . The width of the play is between 0.1 mm and 0.5 mm, and is 0.3 mm in this embodiment, but is not limited to this as long as it rotates smoothly.

  Furthermore, in the present embodiment, the top inner surface 13 of the cap 1 is brought into contact with the inner side surface along the open end 23 of the mouth head 20 of the container body 2 when the cap head 20 of the container body 2 is crowned. An inner ring 11 is formed that sandwiches and supports the vicinity of the open end 23 portion of the oral head 20 in the container body 2 between the inner surface of the cap 1.

  In addition, an annular recess 16 is formed in the outer portion of the close portion of the mouth 20 of the container body 2 at the top of the cap 1, and the portion is thinly formed to give elasticity, and the mouth of the container body 2. The ring-shaped convex part 17 formed in a part of the opening end 23 surface in 20 and the top inner surface 13 of the cap 1 is sealed by close contact.

  The present embodiment having the above configuration is a conventional one in which the cap 1 is screwed into the mouth head 20 of the container body 2 and rotated to be crowned, and the cap 1 is detached by rotating in the reverse direction, like the conventional cap. The cap is attached and detached by the same operation.

  Then, in the vicinity of the front end of the screwing, a container body-side annular ridge 22 formed in the vicinity of the opening end 23 of the mouth 20 of the container body 2 is formed on the inner peripheral surface of the cap 1, and the cap-side annular ridge 12 is formed. By engaging with each other at the position that has been overcome and overtaken, the final location of the cap screwing can be confirmed.

  At this time, the lower surface of the outer screw 21 and the upper surface of the inner screw 15 are in close contact with each other at least in part, so that the play is eliminated and a screwed state is reliably formed.

  Furthermore, in this embodiment, when the top inner surface 13 of the cap 1 is covered with the head 20 of the container body 2, the cap abuts against the inner surface along the opening end 23 of the mouth 20 of the container body 2. The inner ring 11 is formed so as to sandwich and support the vicinity of the opening end 23 of the mouth 20 in the container main body 2 between the inner surface of the container main body 2 and the inner ring 11 and the inner peripheral surface of the cap 1. The tip of the oral head 20 can be sandwiched and supported from both the inside and outside, and in addition, an annular recess 17 is formed on the outer side of the close portion of the mouth head 20 of the container body 2 inside the top of the cap 1. Since the portion is formed thin and provided with elasticity, support by the elasticity is added and a close state which is not conventional can be formed.

  Furthermore, in the present embodiment, when the annular convex portion 17 formed on a part of the top inner surface of the cap 1 is crowned on the container main body 2, the opening end 23 in the mouth 20 of the container main body 2 and the annular The convex part is pressed and adhered.

  In the present embodiment, the container body and the cap use an elastic material such as a resin. However, the present invention is not limited to this, and the container body may be a hard material such as glass.

  Although not shown in the present embodiment, an annular groove that fits with an annular protrusion 17 formed on a part of the top inner surface 13 of the cap 1 is provided at the opening end 23 of the container body 2. Therefore, it is possible to enhance the adhesion and use it for applications such as airtightness and liquidtightness in combination with selection of the forming material of the cap 1 and the container body 2.

  In the present embodiment, the cross-sectional distance of the gap between the inner ring 11 and the wall surface having the cap-side annular ridge 12 that engages the container body-side annular ridge 22 of the cap 1 is slightly less than the cross section of the mouth 20 It is designed to be narrower than the width, and when the cap 1 is screwed in, the inner ring 11 is inserted so as to spread out, so that it is elastically deformed and the inserted container opening is held.

  Moreover, as shown in FIG.1 and FIG.2, the mouth head 20 of the said container main body 2 is provided with the mouth head terminal side cyclic | annular convex part 25 in a part of terminal direction. As a result, the cap 1 locked to the container body 2 is distorted due to excessive pressure applied to the skirt portion 16 from the outside, thereby causing the inner ring 11 and the cap-side annular ridge 12 to be distorted. And the container body 2 are arranged so as to prevent the close contact between the openings of the container body 2.

  Next, the container with a cap shown in FIGS. 4 to 6 as another embodiment will be described.

  In the present embodiment, the container and the entire structure and material in the embodiment shown in FIG. 1 are the same, but a part of the fastening structure between the cap 1 and the container body 2 is different.

  Specifically, in the case of the container with a cap in the embodiment shown in FIG. 4, the container body 2 has a plurality of container body side projections on the top side from the terminal portion of the outer screw 21 on the outer peripheral surface of the mouth head 20. When the cap 1 is screwed into the cap head 20 of the container body 2 on the top side rather than the end of the top side of the inner screw 15 formed on the inner peripheral surface of the cap 1, the container body is provided. The cap-side annular ridges 12 are formed so that the side ridges 24 can get over and engage with each other at positions where the side ridges 24 get over.

Furthermore, in the present embodiment, when the container main body side ridge 24 is covered with the cap 1 on the oral head 20, gets over the container main body side ridge 24 and engages with the cap side annular ridge 12, the container The open end 23 of the mouth 20 of the main body 2 is formed at a position where it abuts on the top inner surface 13 or the annular ridge 17 in the cap 1.
In the present embodiment, the ridges of the container body-side ridges 24 are annularly arranged at four positions at a pitch of 90 °, but the number of intermittents and the pitch angle are not limited thereto.

  By forming an intermittent rather than a complete annular shape like the container main body side ridges 24, the burden of molding the undercut portion can be reduced, and the pressure in the container has increased even when the container is used. In some cases, an intermittent portion is formed, so that air can easily escape and the screw tightening load of the cap 1 is reduced.

In addition, similarly to the container with a cap shown in FIG. 1, the lead angle (35 degrees in the present embodiment) of the outer screw 21 formed on the outer periphery of the mouth 20 in the container body 2 and the inner periphery of the cap 1. The lead angle of the inner screw 14 formed on the surface is formed to be equal, and a so-called backlash is formed between the outer screw 21 of the container body 2 and the inner screw 14 of the cap 1. Smooth insertion and rotation are possible. The width of the play is between 0.1 mm and 0.5 mm, and is 0.3 mm in this embodiment, but is not limited to this as long as it rotates smoothly.

  Furthermore, in this embodiment, similarly to the container with a cap in FIG. 1, when the top inner surface 13 of the cap 1 is crowned by the mouth 20 of the container body 2, the opening of the mouth 20 of the container body 2 is opened. An inner ring 11 is formed which is in contact with the inner side surface along the end 23 and sandwiches and supports the vicinity of the opening end 23 portion of the head 20 in the container body 2 between the inner side surface of the cap 1.

  In addition, an annular recess 16 is formed in the outer portion of the close portion of the mouth 20 of the container body 2 at the top of the cap 1, and the portion is thinly formed to give elasticity, and the mouth of the container body 2. The ring-shaped convex part 17 formed in a part of the opening end 23 surface in 20 and the top inner surface 13 of the cap 1 is sealed by close contact.

  In the present embodiment shown in FIG. 4 having the above-described configuration, the cap 1 is screwed into the mouth 20 of the container body 2 and rotated to be crowned, and the cap 1 is rotated in the reverse direction, similarly to the conventional cap. The cap is attached and detached by the same operation as the conventional one to be detached.

  Then, in the vicinity of the front end of the screwing, the container main body side ridge 24 formed in the vicinity of the opening end 23 of the mouth 20 of the container main body 2 is formed on the inner peripheral surface of the cap 1 so that the cap side annular ridge 12 gets over. By engaging each other, the final location of the cap screwing can be confirmed.

  At this time, the lower surface of the outer screw 21 and the upper surface of the inner screw 15 are in close contact with each other at least in part, so that the play is eliminated and a screwed state is reliably formed.

  Further, according to the enlarged cross-sectional view shown in FIG. 6, the inner surface along the open end 23 of the mouth 20 of the container body 2 when the top inner surface 13 of the cap 1 is covered with the mouth 20 of the container body 2. Is formed between the inner ring 11 and the inner surface of the cap 1 so as to sandwich and support the vicinity of the open end 23 of the mouth 20 in the container body 2. The tip of the mouth 20 of the container body 2 can be sandwiched and supported from both the inside and outside, and in addition, an annular recess is formed on the outside of the close part of the mouth 20 of the container body 2 inside the top of the cap 1. Since 17 is formed and the portion is thinly formed and given elasticity, support by the elasticity can be added to form an intimate state which is not conventional.

  Furthermore, as shown in FIG. 6, when the annular protrusion 17 formed on a part of the inner surface of the top portion of the cap 1 is crowned on the container body 2, the opening end 23 in the mouth 20 of the container body 2 and the above-mentioned The ridges 24 are pressed and adhered.

  In this embodiment, the container body and the cap use an elastic material such as resin, but the present invention is not limited to this, and the container body may be a hard material such as glass.

  Although not shown in the present embodiment, by providing an annular groove that fits with an annular protrusion 17 formed on a part of the top inner surface 13 of the cap 1 at the opening end 23 of the container body 2. However, it is possible to enhance the adhesion and use it for applications such as airtightness and liquidtightness in combination with selection of the forming material of the cap 1 and the container body 2.

  As shown in FIGS. 5 and 6, the cross-sectional distance of the gap between the inner ring 11 and the wall surface having the cap-side annular ridge 12 that engages with the container body-side ridge 24 of the cap 1 is slightly oral. It is designed to be narrower than the cross-sectional width of the portion 20, and when the cap 1 is screwed in, the inner ring 11 is inserted so as to spread out, so that it elastically deforms and holds the inserted container opening.

  In addition, in embodiment shown to FIGS. 4-6, the oral-portion terminal side cyclic | annular convex part 25 is not provided. This part is to prevent the contact between the container body 2 and the cap 1 due to the distortion of the cap, but it is not essential and is arranged according to the material of the cap and container and the purpose of use of the container. In this embodiment, it is not arranged.

  DESCRIPTION OF SYMBOLS 1 Cap, 2 Container main body, 11 Inner ring, 12 Cap side cyclic | annular protrusion, 13 Top inner surface, 14 Inner screw, 15 Skirt part, 16 Annular recessed part, 17 Annular convex part, 20 Oral head, 21 Outer screw, 22 Container main body Side annular ridge, 23 Open end, 24 Container body side ridge, 25 Oral head end annular convex

Claims (6)

A container main body having an outer screw formed on the outer peripheral portion of the mouth head and an inner screw that is screwed to the outer screw on the inner peripheral surface, and the crown is detached from the mouth of the container main body by screw fitting. A container with a cap, wherein the opening end of the mouth of the container body closely contacts the inner surface of the top of the cap when the cap is put on the mouth of the container body,
The container body is provided with a container body-side annular ridge projecting on the top side from the terminal portion of the outer screw on the outer peripheral surface of the oral head,
When the cap is screwed into the cap of the container body on the top side rather than the end of the top side of the inner screw on the inner peripheral surface, the container body-side annular ridge can and can get over the cap. Cap-shaped annular ridges that are engaged with each other at positions are formed.   2. A container body-side annular ridge having at least one intermittent portion projecting from the terminal portion of the outer screw on the outer peripheral surface of the mouth head on the container body. A container with a cap according to 1.   An opening edge of the mouth of the container main body when the cap is put on the mouth of the convex of the container main body side annular ridge and the container main body side annular ridge is overcome and engaged with the cap side annular ridge The container with cap according to claim 1 or 2, wherein is formed at a position in close contact with the inner surface of the top of the cap.   The lead angle of the outer screw formed on the outer peripheral portion of the mouth of the container body is equal to the lead angle of the inner screw formed on the inner peripheral surface of the cap, and the cap is screwed at least on the mouth of the container body. The lower surface of the outer screw and the upper surface of the inner screw are in close contact with each other at least partially when the container main body-side annular ridge is engaged with the cap-side annular ridge over the cap-side annular ridge. Item 4. A container with a cap according to item 1, 2 or 3.   Oral in the container body between the inner surface of the cap and the inner surface along the open end of the mouth of the container body when the top inner surface of the cap is crowned on the mouth of the container body 5. A container with a cap according to claim 1, wherein an inner ring is formed so as to sandwich and support the vicinity of the opening end of the portion.   6. A container with a cap according to claim 1, wherein a contact portion of the cap with the opening end of the container body is formed thin to give elasticity.