JP2011093540A - Mixing container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing container venting excess gas without separating a lid from the container. <P>SOLUTION: The mixing container 1 is equipped with: an annular wall opening part 21; a container 2 having a plurality of container side screw parts 23 on its outer peripheral face; and a lid 3 having a ceiling part 31, an inside skirt wall part 32 and outside skirt wall part 33. On the base end 24 of the container side screw part 23, a stopping fixing part 28 for pressing downward and stopping a screw projection 35 when being fitted is provided, and the container 2 has a locking part 29 on the outer peripheral face of the annular standing wall part 21 above the stopping and fixing part 28. When the pressure in the mixing container 1 exceeds an allowable value, the lid 3 shifts upward, the content such as gas is evacuated and the lid 3 is caught on a locking part 29. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mixing container, and more particularly to a mixing container suitable for mixing foaming compositions such as foaming hair treatment agents.

  Foaming agents are known as hair treatment agents used for hair dyeing (dyeing) or decolorization. This type of hair treatment agent may generate gas during storage, and is therefore usually stored in a storage container that can handle gas generation.

  Patent Document 1 discloses a lid having a mechanism for discharging gas to the outside when gas is generated and the pressure in the storage container becomes too high. This lid is screwed to the mouth of a container that contains a foamable composition (contents), and a gas discharge mechanism is provided at the center of the screwed lid. When the pressure in the container exceeds the allowable value, the gas discharge mechanism floats under pressure, exposes the gas discharge port, and discharges the gas in the container from the gas discharge port.

  By the way, some foaming hair treatment agents are prepared by mixing raw materials just before use. This type of hair treatment agent is not a container intended for long-term storage, but is usually prepared using a container (so-called mixing container) in which raw materials can be easily mixed and contents can be easily taken out. The mixing container generally includes a container for storing raw materials and the like, and a lid attached to the mouth of the container to seal the container. Note that the mouth of this type of mixing container (the container) is generally set larger than that of a storage container for the purpose of facilitating removal of the contents.

JP 2005-263268 A

  After mixing a raw material etc. using the above mixing containers, the contents (mixture) are normally taken out from a container immediately after removing a lid | cover. However, the sealed mixing container may be left for a while without immediately removing the lid from the container. In such a case, if the contents are foamable, the pressure in the mixing container gradually increases, and the lid may come off so as to jump out of the container, or the lid or the like may be damaged.

  An object of the present invention is to provide a mixing container that can discharge gas without leaving the lid away from the container, even if gas is generated from the contents and the internal pressure becomes too high with the lid screwed to the container. It is.

The mixing container according to the present invention is as follows.
<1> a container having an annular wall mouth portion including a plurality of container-side screw portions on the outer peripheral surface, and a housing portion connected to the annular wall mouth portion and housing the contents;
A ceiling portion, an inner skirt wall portion extending downward from a peripheral edge of the ceiling portion in order to bring the front side into close contact with the inner peripheral surface on the back side of the opening portion of the annular wall mouth portion, and an inner periphery An outer skirt wall that includes a plurality of lid-side screw portions that are respectively engaged with the container-side screw portions on a surface and extends from the periphery of the annular wall mouth portion so as to cover the upper end surface and the outer peripheral surface of the annular wall mouth portion A lid having a portion,
When the lid is screwed to the container, the front side of the inner skirt wall portion is in close contact with the inner peripheral surface of the annular wall mouth portion, and the outer peripheral surface of the inner skirt wall portion is closer to the root side than the front side. A mixing vessel separating from the inner peripheral surface of the annular wall opening,
The annular wall mouth portion includes an engaging portion on an upper outer peripheral surface from a position where the lid-side screw portion engages with the container-side screw portion when the lid is screwed to the container. Characteristic mixing container.

  The mixing container has the above-described configuration so that when the internal pressure is excessively increased, the lid-side screw portion gets over the container-side screw portion, and the front side of the skirt wall portion is the inner periphery of the annular wall mouth portion. The lid moves upward with respect to the container so as to be separated from the surface, and then the lid is stopped by the lid-side screw portion being locked to the locking portion.

  <2> A small-diameter section whose annular wall mouth is smaller than the outer diameter of the front side of the inner skirt wall, and an inner diameter adjacent to the opening side of the small-diameter section and the front side of the inner skirt wall The mixing container according to the above <1>, comprising a large-diameter area portion larger than the outer diameter.

  <3> The mixing container according to <1> or <2>, wherein the annular wall mouth portion has a peripheral strip portion below the container-side screw portion on the outer peripheral surface thereof.

  <4> The container-side screw portion includes a screw protrusion including a section inclined with respect to the circumferential direction from the base end to the tip, and the lid-side screw portion includes a screw protrusion shorter than the container-side screw portion. The mixing container according to any one of <1> to <3>, wherein the stopper is provided on the outer peripheral surface of the annular wall mouth portion above the proximal end of the screw protrusion.

  <5> The mixing container according to <4>, wherein the locking portion is formed of a tip portion of the screw protrusion.

  <6> The above-described <1> to <1>, in which the storage portion is composed of a bottom portion and a cylindrical storage wall portion erected from the periphery of the bottom portion, and the annular wall mouth portion is erected from the storage wall portion. 5. A mixing container according to any one of 5>.

  <7> The mixing container according to any one of <1> to <6>, wherein the container and the lid are each made of a flexible plastic material.

  <8> The mixing container according to any one of <1> to <7>, wherein the content is foamable.

  <10> When the lid is screwed to the container, the position where the lid-side screw part engages with the container-side screw part is more than the position where the front side of the inner skirt wall part is in close contact with the inner peripheral surface of the annular wall mouth part. The mixing container according to any one of <1> to <9>, which is on the opening side.

  <11> The mixing container according to any one of <1> to <10>, wherein a gap is formed between the annular wall mouth part and the inner skirt wall part when the lid is screwed to the container.

  <12> The mixing container according to any one of <1> to <11>, wherein the base side of the inner skirt wall portion is in close contact with the inner peripheral surface of the annular wall mouth portion when the lid is screwed to the container.

  <13> The mixing container according to any one of <1> to <12>, wherein the lid is disposed on the lower side and the container is disposed on the upper side.

  According to the mixing container of the present invention, even when the gas is generated from the contents and the internal pressure becomes too high with the lid screwed to the container, the gas can be discharged without the lid being separated from the container.

It is a side view of the mixing container which concerns on one Embodiment of this invention. It is a top view of the lid seen from the inside. It is a side view of a container. It is a fragmentary sectional view of the mixing container in the state whose internal pressure is below an allowable value. It is a fragmentary sectional view of the mixing container in the state where the internal pressure exceeded the allowable value. It is a fragmentary sectional view of the mixing container after gas discharge. It is a perspective view of the container provided with the communicating groove.

  Hereinafter, embodiments of the mixing container of the present invention will be described with reference to the drawings. In addition, the mixing container of this invention is not limited to embodiment illustrated in this specification.

  FIG. 1 is a side view of a mixing container according to an embodiment. As shown in FIG. 1, the mixing container 1 includes a container 2 and a lid 3 detachably attached to the container 2 (attachment and detachment). FIG. 1 shows the mixing container 1 with the lid 3 screwed to the container 2. In addition, the mixing container 1 of FIG. 1 is partially cut away, and its cross section is shown. FIG. 2 is a plan view of the lid 3 as viewed from the inside, and FIG. 3 is a side view of the container 2.

  As shown in FIGS. 1 and 3, the container 2 is a cup-shaped container whose inner diameter increases toward the upper side, and has an annular wall mouth portion 21 at an upper edge portion. The annular wall mouth portion 21 is a cylinder having a substantially circular cross section in the lateral direction, and an opening 22 is provided inside the upper end portion for use in charging raw materials and taking out contents. In the present embodiment, the inner diameter of the back side (lower side) of the annular wall mouth portion 21 is made smaller than the inner diameter of the upper end portion (the diameter of the opening portion 22). That is, the inner diameter of the annular wall mouth portion 21 is set so as to increase from the back side toward the opening 22 side.

  The annular wall mouth portion 21 of the present embodiment is divided into a small-diameter section 222 and a large-diameter section 221 having an inner diameter larger than the inner diameter of the small-diameter section 222 according to the size of the inner diameter. The large diameter section 221 is arranged adjacent to the opening 22 side than the small diameter section 222.

  In the present embodiment, the thickness of the annular wall mouth portion 21 may be uniform as long as the inner diameter is set larger toward the opening 22 side, but the lower side having the smaller inner diameter is larger than the upper side having the larger inner diameter. It is preferable to set it large (thick). In this way, the strength (rigidity) of the lower annular wall mouth portion 21 may be improved. In particular, it is preferable to increase the strength (rigidity) by setting the thickness of a portion (described later) to be in close contact with the lid 3. As described above, when the lower strength (rigidity) is improved, the annular wall mouth portion 21 is more easily bent toward the inner side as described later.

On the outer peripheral surface of the annular wall mouth portion 21, a plurality of screw protrusions 23 are formed as container-side screw portions 23. Each screw protrusion 23 is elongated and protrudes on the outer peripheral surface of the annular wall mouth portion 21. Each screw protrusion 23 has a proximal end 24 disposed on the lower side and a distal end 25 disposed on the upper side (opening 22 side). Note that the base end 24 of the screw protrusion 23 of the present embodiment is a position that engages with a lid-side screw portion 35 (screw protrusion 35), which will be described later, when the lid 3 is screwed and attached to the container 2. is there.
Each screw protrusion 23 includes a portion (section) that is inclined from the proximal end 24 to the distal end 25 with respect to the circumferential direction. In particular, the tip 25 of the screw protrusion 23 of the present embodiment is directed toward the opening 22 and reaches the upper end of the annular wall mouth 21. Thus, when the tip 25 reaches the upper end, the lid 3 can be easily attached to the container 2. The inclination directions of the screw protrusions 23 are aligned and aligned so as to be the same.
In addition, the screw ridge part 23 of this embodiment has the sub ridge part 26 further extended from the base end 24 further, and the screw ridge part 23 and the sub ridge part 26 are continued. . This auxiliary protrusion 26 also swells in an elongated and convex shape on the outer peripheral surface of the annular wall mouth portion 21, and is similarly inclined with respect to the circumferential direction.

  The screw protrusions 23 are disposed so as to surround the annular wall mouth portion 21 and are disposed at a predetermined interval from each other. In the present embodiment, four screw protrusions 23 are formed on the outer peripheral surface of the annular wall mouth portion 21. In addition, what is necessary is just to select suitably the number of the screw protrusion parts 23 according to the objective, for example, you may use 2-5 screw protrusion parts 23. FIG. Further, the interval between the screw ridges 23 may be appropriately selected according to the purpose, but the interval between the screw ridges 23 is preferably equal. In the present embodiment, four screw protrusions 23 are arranged at equal intervals on the outer peripheral surface of the substantially circular annular wall mouth portion 21. And the position of the base end 24 of each screw protrusion 23 is set so that it may be located in a line with respect to the circumferential direction. That is, the positions of the base ends 24 of the screw protrusions 23 are aligned at the same height from the lower side of the annular wall opening 21.

  In other embodiments, the position of the base end 24 of each screw protrusion 23, the position of the tip 25, the inclination direction, the inclination angle (gradient), the length, the strength, the shape (outer shape and cross section), and the like. Various conditions of the unit 23 are appropriately selected according to the purpose.

  On the outer peripheral surface of the annular wall mouth portion 21 of the present embodiment, a peripheral strip portion 27 is further formed. The circumferential strip portion 27 is disposed below the screw projection strip portion 23 and swells in a long and convex shape along the circumferential direction. The peripheral portion 27 improves the strength (rigidity) on the lower side of the annular wall mouth portion 21. As described above, when the lower strength (rigidity) is improved, the annular wall mouth portion 21 is more easily bent toward the inner side as described later. Note that one end (base end) of the auxiliary protrusion 26 is connected to the peripheral protrusion 27.

  The base end 24 of the screw protrusion 23 is provided with a stop fixing portion 28 for stopping and fixing the movement of the lid 3. Further, a projecting locking portion 29 is formed at a position from the position of the stop fixing portion 28 toward the upper side (opening 22 side) along the outer peripheral surface of the annular wall mouth portion 21. The position of the stop fixing portion 28 corresponds to the position where the stop fixing portion 28 at the base end 24 of the screw protrusion 23 and the screw projection 35 are engaged. The locking portion 29 is formed of a protrusion that protrudes in a convex shape from the outer peripheral surface of the annular wall mouth portion 21. As a shape of the latching | locking part 29 in other embodiment, it may consist of the elongate protrusion part, and may be connected and integrated with the front-end | tip 24 of the screw protrusion part 23. FIG. The locking portion 29 may be provided in correspondence with all portions where the screw projection 35 (lid-side screw portion 35) and the screw protrusion 23 (container-side screw portion 23) are engaged, or the present invention. If the above object can be achieved, it may be provided corresponding to only a part of the engagement points. In the present embodiment, the height of the locking portion 29 (height from the outer peripheral surface of the annular wall mouth portion 21) is the height of the screw protrusion 23 (height from the outer peripheral surface of the annular wall mouth portion 21). Is set to be almost the same. What is necessary is just to set the height of this latching | locking part 29 suitably in other embodiment.

  As shown in FIG. 1 and FIG. 3, the container 2 includes a housing portion 200 connected to the annular wall mouth portion 21 on the lower side. The accommodating part 200 consists of the bottom part 201 and the cylindrical accommodating wall part 202 standingly arranged from the periphery of this bottom part 201, and accommodates contents, such as a raw material before mixing, a mixture, etc. inside them. The shape of the bottom part 201 of this embodiment is substantially circular. The shape of the storage wall 202 is a cylinder whose inner diameter increases from the bottom 201 side toward the upper side. The shape of the accommodating portion 200 is not particularly limited and can be appropriately selected depending on the purpose as long as the object of the present invention can be achieved.

  As shown in FIGS. 1 and 2, the lid 3 includes a ceiling portion 31, an inner skirt wall portion 32, and an outer skirt wall portion 33.

  The ceiling portion 31 has a substantially hemispherical outer shape (so-called dome shape), and the inner surface shape is also substantially hemispherical. That is, the ceiling part 31 is shaped like a substantially hemispherical vessel with the mouth side facing downward. A cylindrical inner skirt wall portion 32 extends from the peripheral edge of the ceiling portion 31. In addition, the front side of the cylindrical inner skirt wall 32 is curved outward and has a larger diameter.

  The ceiling part 31 and the inner skirt wall part 32 constitute one vessel (lid side container) with the mouth side facing downward.

  The length and outer diameter of the inner skirt wall portion 32 are set so that the inner skirt wall portion 32 is inserted into the annular wall mouth portion 21 and stored when the lid 3 is screwed and attached to the container 2. Has been. Further, the front side of the inner skirt wall portion 32 is set so as to be in close contact with the inner peripheral surface of the annular wall mouth portion 21 in the annular wall mouth portion 21 when the lid 3 is attached to the container 2. The front side of the inner skirt wall portion 32 is brought into close contact with the inner peripheral surface of the annular wall mouth portion 21, and the space between them is sealed.

  A portion where the front side of the inner skirt wall portion 32 is in close contact with the inner peripheral surface of the annular wall mouth portion 21 is particularly referred to as a front-side annular contact portion 34. Note that the front-side annular contact portion 34 on the front side of the inner skirt wall portion 32 may be the tip itself, or may be a location located on the base side of the tip. However, in the case where the inner skirt wall portion 32 on the base side from the tip is the front-side annular contact portion 34, the outer diameter of the front side of the front-side annular contact portion 34 is that of the front-side annular contact portion 34. It is necessary to make it smaller than the outer diameter. The “outer diameter of the front-side annular contact portion 34” is the outer diameter (maximum diameter) of the largest portion of the front-side annular contact portion 34.

  In addition, among the containers 2 in this embodiment, the lid 3 is screwed and attached to the container 2 from the opening 22, and when the inner skirt wall part 32 is lowered most, the front side of the inner skirt wall part 32 is the container 2. The portion up to the place in contact with the inner peripheral surface becomes the annular wall mouth portion 21. The lower part becomes the accommodating part 200.

  The inner diameter of the small-diameter section 222 of the annular wall mouth portion 21 is equal to or smaller than the outer diameter of the front-side annular contact portion 34. In contrast, the inner diameter of the large-diameter section 221 of the annular wall mouth portion 21 is larger than the outer diameter of the front-side annular contact portion 34. When the lid 3 is screwed and attached to the container 2, a part of the small-diameter area portion 222 exists above the front-side annular contact portion 34 that is in close contact with the inner peripheral surface of the annular wall mouth portion 21. Also good. When attaching the lid 3 to the container 2 or removing the lid 3 from the container 2, the front-side annular contact portion 34 usually moves while sliding on the small-diameter section 222 of this portion.

  The inner skirt wall portion 32 of the present embodiment has a root-side annular contact portion 36 so that the base side can be in close contact with the inner peripheral surface of the annular wall mouth portion 21 when the lid 3 is screwed and attached to the container 2. Prepare. The root-side annular contact portion 36 can also seal between the container 2 and the inner skirt wall portion 32. In this embodiment, the position of the root side annular contact portion 36 is set so as to be in close contact with the inner peripheral surface of the upper end portion of the annular wall mouth portion 21. The root-side annular contact portion 36 is at least partially in contact with the inner peripheral surface of the annular wall mouth portion 21 in the direction from the root side to the front side when the lid 3 is attached to the container 2. Good.

  As shown in FIGS. 1 and 2, the outer skirt wall portion 33 extends from the periphery of the ceiling portion 31 so as to cover the upper end surface of the annular wall mouth portion 21 and the outer peripheral surface of the annular wall mouth portion 21. Yes. The outer skirt wall portion 33 that covers the upper end surface of the annular wall mouth portion 21 is circular (annular) when viewed from the ceiling portion 31 side of the lid 3, and is substantially horizontal (circumferential direction) from the periphery of the ceiling portion 31. Overhangs. The outer skirt wall portion 33 that covers the outer peripheral surface of the annular wall mouth portion 21 has a cylindrical shape that surrounds the annular wall mouth portion 21. The part that covers the end surface protrudes like a spear.

  The outer skirt wall portion 33 that covers the outer peripheral surface of the annular wall mouth portion 21 is provided with four screw projections 35 as lid side screw portions 35 that are engaged with the respective screw protrusion portions 23 on the inner peripheral surface thereof. It has been. The screw projections 35 are formed on the inner peripheral surface of the outer skirt wall 33 so as to be elongated along the circumferential direction so as to rise in a convex shape. The length of the screw protrusion 35 is set shorter than the screw protrusion 23 in this embodiment. As shown in FIG. 2, the screw protrusions 35 are arranged at equal intervals corresponding to the positions of the screw protrusions 23 in order to engage with the screw protrusions 23.

  Here, the movement of the lid 3 when attached to the container 2 will be described. First, when the lid 3 is attached to the container 2, the lid 3 is arranged with respect to the container 2 so that the inner skirt wall 32 is inserted from the opening 22 and the outer skirt wall 33 is covered with the annular wall mouth 21. To do. Next, when the lid 3 is moved clockwise, the outer skirt wall portion 33 turns around the outer side of the annular wall mouth portion 21, and the screw protrusions 35 (35A) are directed from the distal end 25 side toward the proximal end 24 side. It moves along the lower side (lower surface side) of the ridge 23 and begins to descend (see FIG. 3). Then, the screw protrusion 35 (35 </ b> A) is guided to the shape (lower surface shape) of the inclined screw protrusion 23 and reaches the base end 24. The base end 24 is provided with the stop fixing portion 28 as described above. The stop fixing portion 28 has a sloped surface on the lower surface that presses the screw projection 35 that moves along the lower side of the screw protrusion 23 further downward. The stop fixing portion 28 presses the screw projection 35 from the upper side (upper surface side) with the inclined surface.

  When the screw projection 35 reaches the base end 24 (stop fixing portion 28) of the screw protrusion 23, the front side (front side annular contact portion 34) of the inner skirt wall portion 32 is the inner periphery of the annular wall mouth portion 21. It abuts against the surface and is pressed against its inner peripheral surface. As described above, when the screw projection 35 is stopped at the base end 24 (stop fixing portion 28) of the screw protrusion 23 and the lid 3 is attached to the container 2, the inner skirt wall portion 32 and the ceiling portion 31 are integrated. The lid-side container is placed in the container 2 so as to seal the space 4 in the mixing container 1. That is, the lid-side container has an annular shape by hooking the screw projection 35 via the outer skirt wall portion 33 to the stop fixing portion 28 of the screw protrusion 23 provided on the outer peripheral surface of the annular wall mouth portion 21. It is fixed on the inner peripheral surface of the wall opening 21.

  In addition, as described above, the auxiliary protrusion 26 is formed on the outer peripheral surface of the annular wall mouth portion 21 of the present embodiment. When attaching the lid 3 to the container 2, the auxiliary protrusion 26 can move the screw protrusion 35 (35 </ b> B) along the upper side (upper surface side). Therefore, the screw protrusion 35 (35B) can be easily guided to the screw protrusion 23 arranged adjacent to the base end side of the auxiliary protrusion 26 (see FIG. 3).

  As described above, the locking portion 29 is formed on the outer peripheral surface of the annular wall mouth portion 21 of the present embodiment. A sufficient space is provided between the locking portion 29 and the screw protrusion 23 for allowing the screw protrusion 35 to pass therethrough. In addition, other convex parts, such as a protrusion and a protrusion part, are not formed in the meantime. Therefore, when the lid 3 is attached to the container 2, the lid 3 can be fixed to the container 2 without causing the screw projections 35 (35B) to interfere with the locking portion 29 (see FIG. 3). If the lid 3 is turned to the opposite side (counterclockwise), the lid 3 can be easily removed from the container 2 without causing the screw projection 35 to interfere with the locking portion 29.

  In addition, on the outer peripheral surface of the annular wall mouth portion 21 of the present embodiment, a contact portion 203 is protruded below the base end 24 of the screw protrusion 23. When the screw projection 35 hits and collides with the contact portion 203, the screw projection 35 is prevented from passing through the stop fixing portion 28 at the base end 24 of the screw protrusion 23.

  Note that the position of the base end 24 of the screw protrusion 23 can be adjusted by changing the position of the contact portion 203. That is, the position of the contact portion 203 is lower than the one protruding portion formed by connecting the screw protruding portion 23 and the auxiliary protruding portion 26 (on the auxiliary protruding portion 26 side). ) Or the upper side (screw protrusion 23) (see FIG. 3).

  When the lid 3 is attached to the container 2, a gap 5 is formed in the mixing container 1 between the inner skirt wall portion 32 and the annular wall mouth portion 21 as shown in FIG. 1.

  Examples of the material constituting the mixing container 1 include known plastic materials such as polyethylene, polypropylene, and styrene, and materials that are particularly excellent in flexibility and durability are preferable. In addition, other materials such as metal and glass may be used as the material of the mixing container 1 as long as the object of the present invention can be achieved. The mixing container 1 can be manufactured using a known processing technique. The container 2 and the lid 3 may be made of the same material or different materials.

  The mixing container 1 is used for preparation of hair treatment agents such as cosmetics, decoloring agents, and hair dyes, for example. In particular, the mixing container 1 is suitable for the preparation (mixing) of foamable compositions (foam-like compositions) such as foamable hair treatment agents. Examples of contents other than the hair treatment agent include drugs, paints, and foods. These contents are contained in the sealed space 4 of the mixing container 1, that is, in the space 4 formed between the container 2 and the lid-side container in which the inner skirt wall portion 32 and the ceiling portion 31 are integrated. Mixed and stored.

  For example, when a foamable hair treatment agent is mixed and prepared from one powdery agent and two liquid agents, first, each raw material (one agent and two agents) is put into the container 2 from the opening 22. Thereafter, the lid 3 is fixed to the container 2 and the inside of the mixing container 1 is sealed. Next, the raw materials are mixed by shaking the sealed mixing container 1 by hand. In addition, since the container 2 and the lid 3 of the mixing container 1 are screwed and fixed to each other, the lid 3 moves above the container 2 even if shaking is applied to the mixing container 1 by shaking by hand or the like. And so on. After mixing, when the lid 3 is rotated counterclockwise and removed from the container 2, the contents in the container 2 can be taken out from the opening 22.

  If the foamable composition such as the hair treatment agent is stored in the mixing container 1 for a while, gas may be generated from the composition, and the pressure in the mixing container 1 may become too high. In such a case, when the pressure in the mixing container 1 exceeds an allowable value, the mixing container 1 of the present embodiment automatically shifts the lid 3 to the upper side of the container 2 and moves the gas in the mixing container 1 or the like. Is discharged to the outside, and the inside of the mixing container 1 is depressurized. Moreover, the mixing container 1 does not separate the lid 3 from the container 2 when the gas is discharged. Hereinafter, the principle will be described with reference to FIGS.

  FIG. 4 is a partial cross-sectional view of the mixing container 1 in which the internal pressure is not more than an allowable value. If the pressure in the space 4 (internal pressure) is less than the allowable value, the lid 3 of the mixing container 1 remains screwed and fixed to the annular wall mouth 21 of the container 2 as shown in FIG. . In other words, the screw projection 35 provided on the inner peripheral surface of the outer skirt wall portion 33 engages with the stop fixing portion 28 at the base end 24 of the screw protrusion 23 provided on the outer peripheral surface of the annular wall mouth portion 21. By doing so, the lid 3 is fixed to the container 2. At this time, the front-side annular contact portion 34 and the root-side annular contact portion 36 of the inner skirt wall portion 32 are in close contact with the inner peripheral surface of the annular wall mouth portion 21 and seal the respective portions. Further, a gap 5 is formed between the outer peripheral surface of the inner skirt wall portion 32 between the front side annular contact portion 34 and the root side annular contact portion 36 and the inner peripheral surface of the annular wall mouth portion 21. . The locking portion 29 formed above the outer peripheral surface of the annular wall mouth portion 21 is covered with the outer skirt wall portion 33 together with the upper end surface of the annular wall mouth portion 21.

FIG. 5 is a partial cross-sectional view of the mixing container 1 in a state where the internal pressure exceeds the allowable value. When gas is generated from the contents stored and stored in the container 2 and the pressure in the space 4 (internal pressure) exceeds an allowable value, pressure is applied to each of the container 2 and the lid 3 from the inside. 2 and the lid 3 try to be separated from each other. At this time, the screw projection 35 of the outer skirt wall portion 33 of the lid 3 rises to the stop fixing portion 28 of the annular wall mouth portion 21 and further tries to get over the stop fixing portion 28. When the screw projection 35 tries to go up to the stop fixing portion 28, the inner skirt wall portion 32 also moves to the opening portion 22 side of the annular wall mouth portion 21 accordingly. As described above, the container 2 of the present embodiment has the inner diameter of the annular wall mouth portion 21 that increases toward the opening portion 22, and the gap 5 between the annular wall mouth portion 21 and the inner skirt wall portion 32. have. Therefore, when the internal pressure exceeds the allowable value, the annular wall mouth portion 21 can bend (bend) toward the inner gap 5, and the screw projection 35 can get over the stop fixing portion 28. It is easy to shift upward as it is.
Further, when the screw projection 35 attempts to rise to the stop fixing portion 28, the outer skirt wall portion 33 is also deformed so as to expand outward with respect to the ceiling portion 31 and the inner skirt wall portion 32, as shown in FIG. .

  In addition, when the screw projection 35 moves up the stop fixing portion 28, if the front side of the inner skirt wall portion 32 (the front side annular contact portion 34) is in contact with the inner peripheral surface of the annular wall mouth portion 21, the annular wall A force from the inner skirt wall portion 32 is applied to the mouth portion 21 from the inner peripheral surface side, and the annular wall mouth portion 21 is easily bent inward. The position where the screw projection 35 and the stop fixing portion 28 are engaged is more open than the position where the front side (front side annular contact portion 34) of the inner skirt wall portion 32 is in close contact with the inner peripheral surface of the annular wall mouth portion 21. If it is on the portion 22 side, the annular wall mouth portion 21 is bent inward, and the screw projection 35 is easily placed on the stop fixing portion 28. Note that when the screw projection 35 moves up the stop fixing portion 33, force may be applied to the annular wall mouth portion 21 from the inner peripheral surface side by the root side annular contact portion 36.

  As described above, when a force is applied to the annular wall mouth portion 21 by the root-side annular contact portion 36 when the screw projection 35 moves up the stop fixing portion 28, the upper end portion of the annular wall mouth portion 21 is moved to the stop fixing portion 28. Compared to the approximate center, there is a relatively outward protrusion.

After the screw projection 35 gets over the stop fixing portion 28, the front annular contact portion 34 of the inner skirt wall portion 32 is separated from the inner peripheral surface of the annular wall mouth portion 21, and the sealing in the mixing container 1 is released. That is, the annular wall mouth portion is larger than the distance (for example, the sum of the width of the screw projection 35 and the width of the stop fixing portion 28) that the screw projection 35 moves over the stop fixing portion 28 and moves above the annular wall mouth portion 21. The distance at which the inner peripheral surface of 21 can come into close contact with the front annular contact portion 34 of the inner skirt wall portion 32 is set shorter. When the sealing in the mixing container 1 is canceled, the contents such as gas in the space 4 are transferred between the annular wall mouth portion 21 of the container 2 and the inner skirt wall portion 32 and the outer skirt wall portion 33 of the lid 3. It is discharged outside through the gap. In addition, between the adjacent screw protrusions 23 (grooves) and between the adjacent auxiliary protrusions 26 (grooves) on the outer peripheral surface of the annular wall mouth portion 21 is a passage through which gas or the like is discharged. Yes.
In addition, after the screw projection 35 gets over the stop fixing portion 33, the bent annular wall mouth portion 21 is restored and returned to the original position.

  FIG. 6 is a partial cross-sectional view of the mixing container 1 after gas discharge. As shown in FIG. 6, the screw 3 is caught by the engaging portion 29 of the lid 3 that has been discharged from the mixing container 1 and moved to the upper side of the container 2. The locking portion 29 is formed on the outer peripheral surface of the upper annular wall mouth portion 21 from the stop fixing portion 33 of the screw protrusion 23 toward the opening 22. The locking portion 29 is formed on the outer peripheral surface of the annular wall mouth portion 21 so as to rise in a convex shape. The height of the locking portion 29 (the height from the outer peripheral surface of the annular wall mouth portion 21) is set to be substantially the same as the height of the screw protrusion 23. Further, the locking portion 29 is shorter and smaller than the screw projection 35. The interval between the locking portion 29 and the screw protrusion 23 (stop fixing portion 28) passes between these when the lid 3 is attached, and the screw protrusion moves over the stop fixing portion 28 when gas is discharged. It is set appropriately considering the size (width) of 35 and the like. In the present embodiment, the locking portion 29 is disposed at the upper end of the annular wall mouth portion 21. In the present embodiment, four locking portions 29 are provided so as to correspond to the stop fixing portions 33 of the screw protrusions 23. In this way, the lid 3 is prevented from being detached from the container 2 and separated from each other.

  Since the screw projections 35 of the lid 3, the stop fixing portions 28 of the container 2, and the locking portions 29 of the container 2 are arranged at equal intervals and corresponding to each other, the lid 3 is disposed in the container 2. It is evenly shifted upward and is easily caught. In addition, the lid 3 is not evenly displaced above the container 2, and only a part of the screw projections 35 gets over the stop fixing part 28, and the lid 3 may be moved above the container 2 in a tilted state. However, even in such a case, gas or the like is discharged from the portion between the lid 3 and the container 2 where the screw projection 35 is displaced upward, and other screw projections 35 that have not passed over the stop fixing portion 28. However, since the lid 3 does not come off the container 2 due to being caught by the screw protrusions 23 such as the stop fixing portion 28, the object of the present invention can be achieved.

  As described above, in the mixing container 1 of the present embodiment, when the internal pressure exceeds the allowable value, the screw projection 35 easily gets over the base end 24 (stop fixing portion 28) of the screw protrusion 23. Yes. Moreover, when the screw projection 35 gets over the stop fixing portion 28, the shield is immediately released, the gas in the mixing container 1 is discharged to the outside, and the inside of the mixing container 1 is decompressed. The lid 3 can be hooked and stopped, and the lid 3 does not jump out of the container 2 suddenly. Furthermore, as described above, when the screw projection 35 climbs the stop fixing portion 28 and tries to get over, the upper end portion of the annular wall mouth portion 21 protrudes outward by applying a force from the root side annular contact portion 36. The lid 3 is easily caught on the locking portion 29.

  In addition, the latching | locking part 29 is arrange | positioned in the approximate center part of the front-end | tip 25 of the adjacent screw protrusion 23, as FIG. 3 shows. In this way, by securing a sufficient distance between the locking portion 29 and the tip 25 of the screw protrusion 23 so that the screw protrusion 35 can pass, the attachment of the lid 3 to the container 2 and the attachment of the lid 3 Removal from the container 2 is easy.

  In the present embodiment, since the lid 3 of the mixing container 1 has the dome-shaped ceiling portion 31, the screw protrusions 35 get over the stop fixing portions 28 at the same time and are pushed by the gas pressure evenly from the inside. 3 is easy to move straight above the container 2.

  In the mixing container 1 of the present embodiment, when the screw projection 35 that is the lid-side screw portion 35 exceeds the base end 24 (stop fixing portion 28) of the screw protrusion 23 that is the container-side screw portion 23, The locking part 29 is reached. That is, the screw projection 35 does not go beyond other projections such as projections and projections other than the stop fixing portion 28, and the front-side annular contact portion 34 is moved away from the inner peripheral surface of the annular wall mouth portion 21, so that gas etc. It can reach the position where the contents can be discharged to the outside.

  In the mixing container 1 of the present embodiment, the lid-side screw portion 35 is a convex portion (projection) smaller than the container-side screw portion 23. Thus, when the lid-side screw portion 35 is set to be smaller than the container-side screw portion 23, when the internal pressure of the mixing container 1 exceeds the allowable value, the lid-side screw portion 35 is moved to the container-side screw portion 23 ( It is easy to get over the stop fixing part 28). At this time, the outer skirt wall portion 33 of the lid 3 is more likely to expand outward as compared to the case where the lid-side screw portion 35 is formed of a protrusion and the container-side screw portion 23 is formed of a protrusion.

  The mixing container 1 of the present embodiment has a lid 3 and a container 2 fixed by engagement of screw projections 35 and stop fixing portions 38 of the screw protrusions 23 at a plurality of locations. For example, the engagement between the lid 3 and the container 2 as compared with a container in which a spiral protrusion that spirals around is formed on the outer peripheral surface and a mixing container comprising a lid screwed on the container) The force (screwing force) is reduced. In this way, when the mixture is prepared by engaging the screw projection 35 with the stop fixing portion 38 of the screw protrusion 23, the lid 3 does not come off from the container 2 and the internal pressure exceeds the allowable value. The lid 3 adjusts the locking force (screwing force) that allows the lid 3 to move above the container 2.

  In addition, the upper surface where the lid-side screw portion 35 engages with the container-side screw portion 23 (stop fixing portion 28) and / or the lower surface where the container-side screw portion 23 engages with the lid-side screw portion 35. The engagement force between the lid-side screw portion 35 and the container-side screw portion 23 (stop fixing portion 28) may be adjusted as appropriate by changing the gradient or the like.

The inner diameter of the annular mouth wall 21 of the mixing container 1 of the present embodiment is set so that the opening 22 side is larger than the back side, but other embodiments can be used as long as the object of the present invention can be achieved. The inner diameter of the annular mouth wall may be substantially constant.

  In another embodiment, if the gas can be discharged and the lid 3 is not separated from the container 2, only a part of the screw projections 35 gets over the stop fixing portion 28, and the lid 3 is inclined upward of the container 2. You may move. The shape of the ceiling portion 31 of the lid 3 is not particularly limited as long as the gas can be discharged and the lid 3 is not separated from the container 2 other than the dome shape, for example, a flat shape having no space inside. The shape (plate shape) may be sufficient.

  In another embodiment, the container-side screw portion 23 formed on the outer peripheral surface of the annular wall mouth portion 21 is a small protrusion such as the screw protrusion 35 and the outer peripheral skirt wall portion 33 has an inner peripheral surface. The formed lid-side screw portion 35 may be a ridge portion including a section inclined with respect to the circumferential direction from the base end to the tip end, such as the screw ridge portion 23. In this case, the protrusion of the container-side screw part 23 moves so as to rise along the upper surface of the lid-side screw part 35.

  In the mixing container 1 of the present embodiment, the volume of the container 2 is set to be larger than the volume of the portion composed of the ceiling portion 31 and the inner skirt wall portion 32 corresponding to the container on the lid 3 side. In other embodiments, as long as the object of the present invention can be achieved, the volumes of the container on the container 2 side and the lid 3 side may be set to be equal to each other. It may be larger than the volume.

In another embodiment, a communication groove may be provided in the small diameter section 222 of the mixing container 1 of the present embodiment shown in FIG. 1 and the like in the vertical direction (direction from the opening 22 side to the bottom 201 side). Good. FIG. 7 is a perspective view of a container having a communication groove. The communication groove 205 is located at a position where the front annular contact portion 34 is in contact with the small diameter section 222 of the annular wall mouth portion 21 when the lid 3 is attached to the container 2 and the inner skirt wall portion 32 is lowered most. The upper small diameter section 222 is provided. The communication groove 205 is formed so as to be carved into a concave shape with the inner peripheral surface of the small diameter section 222 facing outward.
As described above, when the communication groove 205 is provided in the small diameter section 222, the internal pressure of the mixing container 1 exceeds the allowable value, and the screw projection 35 of the lid 3 gets over the stop fixing part 28 of the container 2 and moves upward. In doing so, the pressure in the space 4 of the container 2 can be gradually discharged to the outside.
This is because the space 4 and the gap (space) 5 are connected via the communication groove 205 when the front-side annular contact portion 34 moves through the small-diameter area portion 222 in which the communication groove 205 is formed. This is because the object is gradually discharged to the outside through the communication groove 205. If the communication groove 205 is provided in this way, the contents such as gas in the space 4 can be discharged to the outside before the front annular contact portion 34 reaches the large diameter section 221. Note that the gas discharge amount can be adjusted by appropriately setting the shape of the communication groove 205, the position where the communication groove 205 is provided, the number thereof, and the like.

  It is assumed that the mixing container 1 of this embodiment is used with the lid 3 disposed on the lower side and the container 2 disposed on the upper side. Thus, even when the mixing container 1 attached with the lid 3 screwed to the container 2 is inverted and used, the inverted mixing container 1 is used when the internal pressure exceeds an allowable value. The contents such as gas can be discharged to the outside without the lid 3 disposed on the lower side being removed from the container 2 disposed on the upper side.

  Furthermore, in the mixing container which concerns on other embodiment, the structure of the container 2 of the mixing container 1 of the said embodiment may be employ | adopted as a lid | cover, and the structure of the lid | cover 3 may be employ | adopted as a container. That is, the mixing container of this embodiment has a configuration in which the function of the container 2 and the function of the lid 3 in the mixing container 1 of the above embodiment are interchanged. Even in such a mixing container, when the internal pressure exceeds the allowable value, the lid having the same structure as the container 2 of the mixing container 1 disposed on the upper side is mixed with the mixing container 1 disposed on the lower side. The contents such as gas can be discharged to the outside in the same manner as the mixing container 1 without detaching from the container having the same configuration as the lid 3.

DESCRIPTION OF SYMBOLS 1 Mixing container 2 Container 21 Annular wall mouth part 221 Large diameter area part 222 Small diameter area part 22 Opening part 23 Screw protrusion (container side screw part)
24 Base end 25 Front end 26 Secondary protrusion 27 Peripheral line 28 Stop fixing part 29 Locking part 200 Storage part 201 Bottom part 202 Storage wall part 203 Contact part 205 Communication groove 3 Lid 31 Ceiling part 32 Inner skirt wall part 33 Outside Skirt wall portion 34 Front side annular contact portion 35 Screw protrusion (lid side screw portion)
36 Root-side annular contact portion 4 Space 5 Clearance

Claims (6)

A container having an annular wall mouth portion including a plurality of container-side screw portions on the outer peripheral surface, and a housing portion connected to the annular wall mouth portion and housing the contents;
A ceiling portion, an inner skirt wall portion extending downward from a peripheral edge of the ceiling portion in order to bring the front side into close contact with the inner peripheral surface on the back side of the opening portion of the annular wall mouth portion, and an inner periphery An outer skirt wall that includes a plurality of lid-side screw portions that are respectively engaged with the container-side screw portions on a surface and extends from the periphery of the annular wall mouth portion so as to cover the upper end surface and the outer peripheral surface of the annular wall mouth portion A lid having a portion,
When the lid is screwed to the container, the front side of the inner skirt wall portion is in close contact with the inner peripheral surface of the annular wall mouth portion, and the outer peripheral surface of the inner skirt wall portion is closer to the root side than the front side. A mixing vessel separating from the inner peripheral surface of the annular wall opening,
The annular wall mouth portion includes an engaging portion on an upper outer peripheral surface from a position where the lid-side screw portion engages with the container-side screw portion when the lid is screwed to the container. Characteristic mixing container.   The annular wall mouth portion has a small-diameter section whose inner diameter is equal to or smaller than the outer diameter of the front side of the inner skirt wall section, and the outer diameter of the inner diameter of the inner skirt wall section adjacent to the opening side of the small-diameter section The mixing container according to claim 1, further comprising a larger-diameter area.   The mixing container according to claim 1 or 2, wherein the annular wall mouth portion has a peripheral strip portion below the container-side screw portion on the outer peripheral surface thereof.   The container-side screw portion is formed of a screw protrusion including a section inclined with respect to the circumferential direction from the base end to the tip, the lid-side screw portion is formed of a screw protrusion shorter than the container-side screw portion, and the locking portion is The mixing container according to any one of claims 1 to 3, wherein the mixing container is provided on the outer peripheral surface of the annular wall mouth portion above the base end of the screw protrusion.   5. The storage device according to claim 1, wherein the storage portion includes a bottom portion and a cylindrical storage wall portion provided upright from a peripheral edge of the bottom portion, and the annular wall mouth portion is provided upright from the storage wall portion. The mixing container according to item.   The mixing container according to any one of claims 1 to 5, wherein the content is foamable.

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