JP6942411B2 - Double container - Google Patents

Description

The present invention relates to a double container having a refill container containing the contents and a main body container in which the refill container is detachably and exchangeably stored.

From the viewpoint of resource saving, a refill container has been proposed in which the main body container can be used repeatedly by detachably storing the refill container filled with the contents in the main body container. For example, in Patent Document 1, a laminated film in which a synthetic resin layer and an oxygen barrier layer are laminated is drawn and molded to integrally form a bottom portion, a side wall portion, and a flange portion to improve gas barrier properties for a refill container. The refill container is disclosed.

Japanese Unexamined Patent Publication No. 2013-166563

The refill container for replenishing such contents should be fixed to the main body container by undercut engagement or the like in a place where it is difficult for the user to touch so that the refill container does not easily come off from the main body container during use. preferable. However, if the refill container is fixed to the main container in a place where it is difficult for the user to touch, it is necessary to remove the refill container from the main container using a removal jig when the contents are used up and the refill container is replaced. be. For this reason, there is a problem that the replacement of the refill container becomes troublesome for the user.

An object of the present invention is to solve such a problem, and an object of the present invention is to propose a double container in which a refill container can be replaced without using a removal jig.

The present invention comprises a refill container having a cylindrical peripheral wall and a bottom wall that closes the lower end of the peripheral wall and accommodating the contents.
A lid covering the upper opening of the refill container and
A double container having an outer peripheral wall that covers the peripheral wall from the outside in the radial direction and a main body container that houses the refill container in a detachable and replaceable manner.
The refill container has an engaging protrusion that protrudes below the bottom wall in a direction orthogonal to the central axis.
An engaging portion with which the engaging protrusion is engaged is provided on the bottom of the main body container.
At least one of the top wall of the lid and the lower position of the engaging portion in the main body container is provided with a pressing portion provided corresponding to the position of the engaging protrusion in a plan view. And
At least one of the pressing portion and the engaging protrusion is provided with an inclined surface that inclines upward in the protruding direction of the engaging protrusion.
The pressing portion has a structure in which an inclined surface that inclines upward in the radial direction and a supporting portion that extends in the vertical direction are connected at the upper end to form a hollow container. Is.

Further, the engaging protrusion is provided on the engaging wall extending downward from the bottom wall.
The engaging portion is preferably an engaging hole provided at the bottom of the main body container.

Further, it is preferable that the engaging protrusion protrudes outward in the radial direction and the inclined surface is inclined upward in the radial direction.

Further, it is preferable that the pressing portion is provided on a pressing member fixed to the bottom portion of the main body container.

Further, it is preferable that the engaging protrusions are intermittently provided at a plurality of locations in the circumferential direction.

According to the present invention, it is possible to propose a double container in which the refill container can be replaced without using a removal jig.

It is a partial front sectional view of the refill container and the lid which constitute the double container which concerns on 1st Embodiment of this invention. (A) is a partial front sectional view showing the double container according to the first embodiment of the present invention in which the refill container of FIG. 1 is housed in the main body container, and (b) is the second cross-sectional view shown in (a). It is a bottom view of a heavy container. It is a front partial sectional view which shows the state when the refill container is removed from the main body container in the double container which concerns on 1st Embodiment of this invention. It is a partial front sectional view of a refill container and a lid body which is a modification of FIG. It is a front partial cross-sectional view which shows the state in which the refill container shown in FIG. 4 is housed in the main body container. It is a partial front sectional view of the refill container and the lid which constitute the double container which concerns on 2nd Embodiment of this invention. (A) is a partial front sectional view showing the double container according to the second embodiment of the present invention in which the refill container of FIG. 6 is housed in the main body container, and (b) is the second cross-sectional view shown in (a). It is a bottom view of a heavy container. It is a front partial sectional view which shows the state when the refill container is removed from the main body container in the double container which concerns on 2nd Embodiment of this invention. It is a front sectional view of the refill container which constitutes the double container which concerns on 3rd Embodiment of this invention, and a lid body. 9 is a front sectional view showing a state in which the refill container of FIG. 9 is housed in the main body container. It is a front half cross-sectional view which shows the state at the time of use of the double container which concerns on 3rd Embodiment of this invention. It is a front sectional view which shows the process of removing a refill container from the double container which concerns on 3rd Embodiment of this invention. It is a front partial sectional view of the refill container which constitutes the double container which concerns on 4th Embodiment of this invention, and a lid body. FIG. 3 is a front sectional view showing a state in which the refill container of FIG. 13 is housed in the main body container. It is a front half cross-sectional view which shows the state at the time of use of the double container which concerns on 4th Embodiment of this invention. It is a front sectional view which shows the process of removing a refill container from the double container which concerns on 4th Embodiment of this invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a front sectional view of a refill container 20 and a lid 30 constituting the double container 100 according to the first embodiment of the present invention. The double container 100 according to the present embodiment has a main body container 10 in addition to the refill container 20 and the lid 30, which will be described in detail later with reference to FIG. 2 and the like. Further, FIG. 1 shows an example in which a pump 40, which is not an essential configuration for the double container 100, is attached to the upper opening 21a of the refill container 20. In the present specification, claims, abstract and drawings, the side where the lid 30 is located is on the upper side (upper side in FIG. 1), and the side where the bottom wall 22 of the refill container 20 is located is on the lower side (FIG. 1). (Lower side in). Further, the radial outer side is a direction toward the outside along a straight line perpendicular to the central axis O1 through the central axis O1 of the refill container 20 in FIG. 1, and the radial inner side is a central axis line along the straight line. It shall point in the direction toward O1.

The refill container 20 has a cylindrical peripheral wall 21 and a bottom wall 22 that closes the lower end of the peripheral wall 21, and accommodates the contents in the accommodation space S1. A male screw portion 27 is provided on the upper part of the outer peripheral surface of the peripheral wall 21. The upper end of the peripheral wall 21 constitutes the upper opening 21a and is closed by being covered with the lid 30 from above. In the present embodiment, the pump 40, which is not essential for the double container 100, is attached to the upper opening 21a of the refill container 20, and the upper opening 21a is covered by the lid 30 via the pump 40. There is. More specifically, the pump 40 is refilled by screw-engagement of the female screw portion 42a provided on the inner peripheral surface of the base cap 42 of the pump 40 with the male screw portion 27 provided on the upper outer peripheral surface of the refill container 20. It is fixed to the container 20 and covers the upper opening 21a. Further, the lower end portion of the lid 30 is fitted to the fitting portion 42b provided on the outer peripheral surface of the base cap 42, so that the lid 30 is attached to the pump 40 and covers the nozzle head 44.

The engaging wall 23 hangs downward from the bottom wall 22. An engaging protrusion 23a projects radially outward on the outer peripheral surface of the lower end of the engaging wall 23. Further, an inclined surface 23b that inclines upward toward the outer side in the radial direction is provided at the lower end portion of the engaging wall 23. In the present embodiment, as shown in FIG. 2B, the engaging walls 23 are intermittently arranged at four locations in the circumferential direction at equal intervals. Therefore, each engaging wall 23 can be elastically deformed independently in the radial direction.

The pump 40 includes a pipe 41 that guides the contents in the accommodation space S1 to the pump main body 43, a pump main body 43 that connects to the upper end of the pipe 41 and pumps the contents from the pipe 41 to the nozzle head 44, and a pump main body 43. A base cap 42 for fixing the pump body 43 to the refill container 20 by sandwiching a flange 43a extending radially outward between the peripheral wall 21 and a discharge hole 44a covering the upper end of the pump body 43 and pressing downward. This includes a nozzle head 44 that operates the pump body 43 to discharge the contents from the discharge hole 44a.

As shown in FIG. 1, the lower end portion of the lid 30 is fitted and fixed to the fitting portion 42b provided on the outer peripheral surface of the base cap 42. The lid 30 includes a top wall 35 and a side wall 31 that hangs downward from the outer peripheral end of the top wall 35, and covers the upper opening 21a and the nozzle head 44 from above.

FIG. 2A is a partial front sectional view showing a state in which the refill container 20 of FIG. 1 is housed in the main body container 10. The main body container 10 has an outer peripheral wall 11 that covers the peripheral wall 21 of the refill container 20 from the outer side in the radial direction, and a bottom portion 12 that is connected to the lower end of the outer peripheral wall 11 and extends inward in the radial direction. The bottom portion 12 includes an annular portion 12a extending inward in the circumferential direction from the outer peripheral wall 11, a bottom tubular wall 12b extending upward from the inner peripheral end of the annular portion 12a, and extending radially inward from the upper end of the bottom tubular wall 12b. A bottom inner wall 12c is provided. The bottom inner wall 12c is provided with an engaging hole 12d for engaging the engaging protrusion 23a on the refill container 20 side. As shown in FIG. 2B, the engaging holes 12d are intermittently provided at four locations in the circumferential direction at equal intervals, similarly to the engaging protrusions 23a. Then, when the refill container 20 shown in FIG. 1 is inserted into the main body container 10 from above, the lower surface of the protrusion 26 provided on the outer peripheral surface of the refill container 20 comes into contact with and engages with the upper end portion 11a of the outer peripheral wall 11. The protrusion 23a passes through the engagement hole 12d and engages with the outer peripheral end thereof. More specifically, when the engaging protrusion 23a abuts on the outer peripheral end of the engaging hole 12d, the lower end of the engaging wall 23 is once elastically deformed inward in the radial direction, and then the engaging protrusion 23a is moved to the engaging hole 12d. The engaging wall 23 is restored to its original shape, and the engaging protrusion 23a engages with the outer peripheral end of the engaging hole 12d. As a result, the refill container 20 is fixed to the main body container 10 in a state in which it cannot be pulled out upward.

From the state shown in FIG. 2A, the user lifts the lid 30 upward and pulls it out from the fitting portion 42b of the base cap 42, and puts the nozzle head 44 in a state where the discharge hole 44a is oriented toward the object. Press down. As a result, the pump main body 43 operates, and the contents in the accommodation space S1 pumped via the pipe 41 are discharged from the discharge hole 44a. The user attaches the lid 30 to the base cap 42 again after use.

FIG. 3 is a partial front sectional view showing a step of removing the refill container 20 from the double container 100 according to the present embodiment. When the contents in the storage space S1 of the refill container 20 are used up, the user needs to remove the empty refill container 20 from the main body container 10. The user rotates the base cap 42 in the circumferential direction in the double container 100 of FIG. 2, disengages the screw engagement between the male screw portion 27 and the female screw portion 42a, and puts the pump 40 with the lid 30 into the double container. Remove from 100. Next, as shown in FIG. 3, the user presses the upper surface of the top wall 35 of the removed lid 30 from below against the used refill container 20 to which the main body container 10 is mounted. As shown in FIG. 3, the top wall 35 of the lid 30 is provided with a pressing portion 37 that projects upward. The pressing portion 37 is elastically deformed with respect to a pressing force in the radial direction because the inclined surface 37a that inclines upward in the radial direction and the supporting portion 37b extending in the vertical direction are connected at the upper end. It is difficult to configure. Then, by pressing the engaging wall 23 of the refill container 20 housed in the main body container 10 upward by the inclined surface 37a of the pressing portion 37, the engaging wall 23 is pushed upward and inward in the radial direction. Under pressure, it elastically deforms inward in the radial direction as shown in FIG. As a result, the engagement between the engaging protrusion 23a and the engaging hole 12d is released, so that the refill container 20 can be easily taken out from the main body container 10 upward as shown by the thick arrow.

After removing the refill container 20 whose contents have been used up from the main body container 10, the user can use a new refill container 20 in which the contents have been filled in the main body container 10 which has been used so far, as shown in FIG. Contain. As a result, the contents can be replenished while using the same main body container 10 repeatedly.

In the present embodiment, as shown in FIG. 3, the pressing portion 37 is provided with an inclined surface 37a, and the engaging wall 23 is also provided with an engaging protrusion 23a at the lower end portion, so that the inclined surface 23b is provided. Is formed. Then, when the inclined surfaces 37a and 23b that incline upward in the radial direction come into contact with each other, the engaging wall 23 is elastically deformed inward in the radial direction under the pressing force upward and inward in the radial direction. However, the present invention is not limited to this mode, and for example, when the pressing portion 37 having no inclined surface abuts on the inclined surface 23b of the engaging wall 23, the engaging wall 23 is elastically deformed inward in the radial direction to engage. It may be configured to disengage the protrusion 23a and the engagement hole 12d. Further, the inclined surface 37a may elastically deform the engaging wall 23 having no inclined surface inward in the radial direction by pressing upward and inward in the radial direction.

Further, in the present embodiment, the pump 40 is configured to be fixed to the refill container 20 by screw engagement, but the present invention is not limited to this embodiment, and the pump 40 may be fixed by other methods such as plug engagement. ..

Further, in the present embodiment, the lid 30 is configured to be fixed to the base cap 42 of the pump 40 by fitting, but the present embodiment is not limited to this embodiment. The lid 30 may be configured to be fixed to the pump 40 by undercut engagement, screw engagement, or the like. Further, when the double container 100 does not have the pump 40 or the like, the lid 30 may be directly fixed to the refill container 20.

Further, in the present embodiment, the engaging wall 23 and the engaging hole 12d are provided intermittently at four locations at equal intervals in the circumferential direction as shown in FIG. 2 (b). Is not limited. For example, the engaging wall 23 and the engaging holes 12d may be provided at different intervals so that the refill container 20 can be attached to the main body container 10 in a predetermined direction. Further, it is not necessary to provide the engaging walls 23 and the engaging holes 12d at four locations each, and an arbitrary number can be provided. However, it is desirable that the engaging walls 23 are intermittently provided at a plurality of locations so as to be easily elastically deformed in the radial direction.

Further, in the present embodiment, the engaging hole 12d is adopted as the configuration of the engaging portion with which the engaging protrusion 23a is engaged, but the present invention is not limited to this embodiment. When the engaging protrusion 23a is configured to protrude outward in the radial direction as in the present embodiment, the engaging portion may be, for example, a protrusion protruding inward in the radial direction.

Further, in the present embodiment, the engaging protrusions 23a are provided so as to project outward in the radial direction, and the inclined surfaces 37a and 23b are configured to incline upward in the radial direction. Not limited. The engaging protrusions 23a may be provided so as to project inward in the radial direction, and the inclined surfaces 37a and 23b may be configured to incline upward in the radial direction. Further, the engaging protrusion 23a can be projected in an arbitrary direction orthogonal to the central axis O1, and the inclined surfaces 37a and 23b can be configured to be inclined upward toward the protruding direction. preferable.

Further, in the present embodiment, the engaging wall 23 and the engaging hole 12d are configured to have an arc shape in a plan view as shown in FIG. 2B, but the present embodiment is not limited to this. The engaging wall 23 and the engaging hole 12d may be formed in a straight line, for example, so that the engaging wall 23 and the engaging hole 12d have a rectangular shape as a whole.

As described above, in the present embodiment, the engaging protrusion 23a provided on the bottom wall 22 of the refill container 20 is engaged with the engaging portion (engagement hole 12d) arranged on the bottom 12 of the main body container 10. By combining, the refill container 20 is prevented from easily coming off from the main body container 10 during use. Further, after the contents in the refill container 20 are used up, as shown in FIG. 3, the used refill container 20 is inclined upward with respect to the protruding direction of the engaging protrusion 23a, the inclined surfaces 37a and 23b. By pressing upward via the above, a force in the direction opposite to the protruding direction is applied to displace the engaging protrusion 23a. As a result, the engagement between the engaging protrusion 23a and the engaging portion is easily disengaged, so that the used refill container 20 can be easily removed from the main body container 10 without using a new jig or the like.

Further, in the present embodiment, the engaging protrusion 23a is provided at the lower end of the engaging wall 23 hanging from the bottom wall 22 of the refill container 20, and the engaging hole 12d is provided in the bottom 12 of the main body container 10 as the engaging portion. I did. As a result, the engaging wall 23 pressed by the inclined surfaces 37a and 23b is easily elastically deformed in the direction opposite to the protruding direction of the engaging protrusion 23a, and the engaging protrusion 23a is displaced to engage the two. It can be released.

Further, in the present embodiment, the engaging protrusion 23a is projected outward in the radial direction, and the pressing portion 37 provided on the upper surface of the lid 30 has an inclined surface 37a that inclines upward in the radial direction. It was configured in. As a result, the engagement between the refill container 20 and the main body container 10 can be easily disengaged by using the pressing portion 37 of the lid body 30 without introducing a new jig or the like.

Further, in the present embodiment, the engaging protrusions 23a are configured to be intermittently provided at a plurality of locations (4 locations) in the circumferential direction. As a result, the plurality of engaging protrusions 23a can be easily displaced in the radial direction to disengage from the engaging portions.

4 and 5 show a modification of this embodiment in which the double container 100 does not have a pump 40. In comparison with FIG. 1, in the refill container 20 of FIG. 4, the pump 40 is not attached to the upper opening 21a, and instead, the female screw portion 51a of the lid 50 is screw-engaged with the male screw portion 27 of the refill container 20. As a result, the lid 50 directly covers the upper opening 21a of the refill container 20. In this modified example as well, a pressing portion 57 having an inclined surface 57a is arranged on the top wall 55 of the lid body 50.

The user mounts the refill container 20 of FIG. 4 in the main body container 10 as shown in FIG. The refill container 20 can be attached to the main body container 10 in the same manner as in the first embodiment. That is, when the refill container 20 shown in FIG. 4 is inserted into the main body container 10 from above, the lower surface of the protrusion 26 provided on the outer peripheral surface of the refill container 20 comes into contact with and engages with the upper end portion 11a of the outer peripheral wall 11. The protrusion 23a passes through the engagement hole 12d and engages with the outer peripheral end thereof. More specifically, the engaging protrusion 23a abuts on the outer peripheral end of the engaging hole 12d, so that the engaging wall 23 is once elastically deformed to the inner peripheral side, and then the engaging protrusion 23a passes through the engaging hole 12d. Then, the engaging protrusion 23a engages with the outer peripheral end of the engaging hole 12d while the engaging wall 23 is restored to its original shape. As a result, as shown in FIG. 5, the refill container 20 is fixed in a state where it cannot be pulled out upward with respect to the main body container 10.

The user can pour and use the contents in the accommodation space S1 by removing the lid 50 by rotating it in the circumferential direction from the state shown in FIG. 5 and tilting the refill container 20 and the main body container 10. After use, the lid 50 is reattached to the refill container 20. Further, after removing the lid 50, the user attaches the pump 40 and the lid 30 shown in FIGS. 1 and 2, and operates the pump body 43 to discharge the contents from the discharge hole 44a for use. You may.

When the contents in the storage space S1 of the refill container 20 are used up, the user needs to remove the empty refill container 20 from the main body container 10. When the pump 40 is not used, the user rotates the lid body 50 in the circumferential direction to release the screw engagement between the male screw portion 27 and the female screw portion 51a, and removes the lid body 50 from the double container 100. Next, the user presses the upper surface of the removed lid 50 from below against the used refill container 20 to which the main body container 10 is mounted. The top wall 55 of the lid 50 is provided with a pressing portion 57 that projects upward. The pressing portion 57 has an inclined surface 57a that inclines upward in the radial direction. Then, by pressing the engaging wall 23 of the refill container 20 upward by the inclined surface 57a of the pressing portion 57, the engaging wall 23 receives a pressing force upward and radially inward and is radially inward. And elastically deform. As a result, the engagement between the engaging protrusion 23a and the engaging hole 12d is released, so that the user can easily take out the refill container 20 upward from the main body container 10.

When the pump 40 and the lid 30 are used instead of the lid 50, the refill container 20 can be easily taken out from the main body container 10 by using the pressing portion 37 on the lid 30 side.

FIG. 6 is a front sectional view of the refill container 120 and the lid 130 constituting the double container 200 according to the second embodiment of the present invention. The double container 200 according to the present embodiment has a main body container 110 in addition to the refill container 120 and the lid 130, which will be described in detail later with reference to FIG. 7 and the like. Further, FIG. 6 shows an example in which a pump 140, which is not an essential configuration for the double container 200, is attached to the upper opening 121a of the refill container 120.

This embodiment is not significantly different from the first embodiment except that the shape of the lid 130 and the configuration of the bottom 112 of the main container 110 are different from those of the first embodiment. Therefore, here, the differences from the first embodiment will be mainly described.

The refill container 120 has a cylindrical peripheral wall 121 and a bottom wall 122 that closes the lower end of the peripheral wall 121, and accommodates the contents in the accommodation space S2. A male screw portion 127 is provided on the upper part of the outer peripheral surface of the peripheral wall 121. The upper end of the peripheral wall 121 constitutes the upper opening 121a and is closed by being covered with the lid 130 from above. In the present embodiment, the pump 140, which is not essential for the double container 200, is attached to the upper opening 121a of the refill container 120, and the upper opening 121a is covered by the lid 130 via the pump 140. There is. More specifically, the pump 140 is refilled by screwing the female screw portion 142a provided on the inner peripheral surface of the base cap 142 of the pump 140 with the male screw portion 127 provided on the upper outer peripheral surface of the refill container 120. It is fixed to the container 120 and covers the upper opening 121a. Further, the lower end portion of the lid body 130 is fitted to the fitting portion 142b of the base cap 142, so that the lid body 130 covers the nozzle head 144 of the pump 140.

The engaging wall 123 hangs downward from the bottom wall 122. Then, the engaging protrusion 123a protrudes outward in the radial direction on the outer peripheral surface at the lower end of the engaging wall 123. Further, an inclined surface 123b that inclines upward toward the outer side in the radial direction is provided at the lower end portion of the engaging wall 123. In the present embodiment, as shown in FIG. 7B, the engaging walls 123 are intermittently arranged at four locations in the circumferential direction at equal intervals. Therefore, each engaging wall 123 can be elastically deformed independently in the radial direction.

As shown in FIG. 6, the lower end portion of the lid 130 is fitted and fixed to the fitting portion 142b provided on the outer peripheral surface of the base cap 142. The lid body 130 includes a top wall 135 and a side wall 131 that hangs downward from the outer peripheral end of the top wall 135, and covers the upper opening 121a and the nozzle head 144 from above.

FIG. 7A is a partial front sectional view showing a state in which the refill container 120 of FIG. 6 is housed in the main body container 110. The main body container 110 has an outer peripheral wall 111 that covers the peripheral wall 121 of the refill container 120 from the outside in the radial direction, and a bottom portion 112 that closes the lower end of the outer peripheral wall 111. The bottom portion 112 is provided with a bottom wall 112c extending inward in the circumferential direction from the lower end of the outer peripheral wall 111. The bottom wall 112c is provided with an engaging hole 112d for engaging the engaging protrusion 123a on the refill container 120 side and a fitting hole 112a for fitting and fixing the pressing member 150 described later. Has been done. As shown in FIG. 7B, the engaging holes 112d are intermittently provided at four locations in the circumferential direction at equal intervals, similarly to the engaging protrusions 123a. Further, in the present embodiment, the fitting holes 112a are also provided at four locations in the circumferential direction, and the fitting protrusions 159a provided at the upper end of the fitting wall 159 of the pressing member 150 are provided at the inner peripheral ends of the fitting holes 112a. By engaging, the pressing member 150 is fixed to the main body container 110. Then, when the refill container 120 shown in FIG. 6 is inserted into the main body container 110 from above, the lower surface of the protrusion 126 provided on the outer peripheral surface of the refill container 120 comes into contact with and engages with the upper end 111a of the outer peripheral wall 111. The protrusion 123a passes through the engagement hole 112d and engages with the outer peripheral end thereof. More specifically, the engaging wall 123 is once elastically deformed inward in the radial direction by the engaging protrusion 123a abutting on the outer peripheral end of the engaging hole 112d, and then the engaging protrusion 123a passes through the engaging hole 112d. Then, the engaging wall 123 is restored to its original shape, and the engaging protrusion 123a engages with the outer peripheral end of the engaging hole 112d. As a result, the refill container 120 is fixed in a state where it cannot be pulled out upward with respect to the main body container 110.

From the state shown in FIG. 7A, the user lifts the lid 130 upward, pulls it out from the fitting portion 142b of the base cap 142, and directs the nozzle head 144 toward the object with the discharge hole 144a. Press down. As a result, the pump main body 143 operates, and the contents in the accommodation space S2 pumped via the pipe 141 are discharged from the discharge hole 144a.

FIG. 8 is a partial front sectional view showing a step of removing the refill container 120 from the double container 200 according to the present embodiment. When the contents in the storage space S2 of the refill container 120 are used up, the user needs to remove the empty refill container 120 from the main body container 110. The user rotates the base cap 142 in the circumferential direction in the double container 200 of FIG. 7, disengages the screw engagement between the male screw portion 127 and the female screw portion 142a, and puts the pump 140 with the lid 130 into the double container. Remove from 200. Next, as shown by the black arrow in FIG. 8, the user presses the pressing member 150 provided below the bottom 112 of the main body container 110 with respect to the used refill container 120 to which the main body container 110 is mounted. Press from below. As shown in FIG. 8, the pressing member 150 is provided with a pressing portion 157 that projects upward. The pressing portion 157 has a configuration in which an inclined surface 157a that inclines upward in the radial direction and a supporting portion 157b that extends in the vertical direction are connected at the upper end. Then, when the user presses the pressing member 150 upward, the inclined surface 157a of the pressing portion 157 presses the engaging wall 123 of the refill container 120 housed in the main body container 110 upward. The abutment wall 123 is elastically deformed inward in the radial direction by receiving a pressing force upward and inward in the radial direction. As a result, the engagement between the engaging protrusion 123a and the engaging hole 112d is released, so that the refill container 120 can be easily taken out from the main body container 110 upward as shown by the white arrow.

After removing the refill container 120 whose contents have been used up from the main body container 110, the user installs a new refill container 120 in which the contents have been filled in the main body container 110 which has been used so far, as shown in FIG. Contain. As a result, the contents can be replenished while using the same main body container 110 repeatedly.

In the present embodiment, as shown in FIG. 8, the pressing portion 157 is provided with an inclined surface 157a, and the engaging wall 123 is also provided with an engaging protrusion 123a at the lower end portion, so that the inclined surface 123b is provided. Is formed. Then, when the inclined surfaces 157a and 123b that incline upward in the radial direction come into contact with each other, the engaging wall 123 is elastically deformed inward in the radial direction under the pressing force upward and inward in the radial direction. However, the present invention is not limited to this embodiment, and for example, when the pressing portion 157 having no inclined surface abuts on the inclined surface 123b of the engaging wall 123, the engaging wall 123 is elastically deformed inward in the radial direction and engaged. It may be configured to disengage the protrusion 123a and the engagement hole 112d. Further, the inclined surface 157a may elastically deform the engaging wall 123 having no inclined surface inward in the radial direction by pressing upward and inward in the radial direction.

Further, in the present embodiment, the pressing portion 157 is provided on the bottom 112 of the main body container 110, but the pressing portion may be provided on the lid 130 side in addition to the bottom 112.

Further, in the present embodiment, the pump 140 is operated to discharge the contents, but the present embodiment is not limited to this mode. Similar to the modified examples (FIGS. 4 and 5) of the first embodiment, the contents in the accommodation space S2 are obtained by removing the lid and tilting the refill container 120 and the main body container 110 without using the pump 140. May be used by pouring.

As described above, in the present embodiment, the pressing member 150 is fitted and fixed to the bottom portion 112 of the main body container 110, the pressing member 150 is provided with the pressing portion 157 protruding upward, and the pressing portion 157 is provided in the radial direction. It is configured to have an inclined surface 157a that inclines upward toward the outside. As a result, the refill container 120 and the main body container 110 can be easily disengaged by pressing the engaging wall 123 by the pressing portion 157 without introducing a new jig or the like.

FIG. 9 is a front sectional view of the refill container 220 and the lid 230 constituting the double container 300 according to the third embodiment of the present invention. The double container 300 according to the present embodiment has a main body container 210 and a main body lid 240 in addition to the refill container 220 and the lid 230, which will be described in detail later with reference to FIG. 11 and the like.

The refill container 220 has a cylindrical peripheral wall 221 and a bottom wall 222 that closes the lower end of the peripheral wall 221 and accommodates the contents in the accommodation space S3. Immediately below the male threaded portion 227 on the upper outer peripheral surface of the peripheral wall 221, an engaging projection 226 for fixing the lid 230 to the refill container 220 by undercut engagement is provided so as to project outward in the radial direction. The upper end of the peripheral wall 221 constitutes an upper opening 221a and is closed by being covered with a lid 230 from above. At the lower end of the peripheral wall 221, a bottom peripheral wall 224 extending further downward beyond the bottom wall 222 is disposed, and ribs 224a are provided on the inner peripheral surface of the bottom peripheral wall 224 at regular intervals in the circumferential direction. There is. Further, the engaging wall 223 hangs downward from the bottom wall 222 on the radial inside of the bottom peripheral wall 224. Then, the fitting claw 223a projects outward in the radial direction on the outer peripheral surface of the lower end portion of the engaging wall 223. In the present embodiment, the engaging walls 223 are intermittently arranged at four locations in the circumferential direction at equal intervals. Therefore, each engaging wall 223 can be elastically deformed independently in the radial direction.

As shown in FIG. 9, a lid 230 is attached to the upper opening 221a of the refill container 220 by undercut engagement. The lid 230 has a top wall 235 that covers the upper opening 221a and a side wall 231 that hangs downward from the outer peripheral end of the top wall 235. A seal wall 236 hangs down from the lower surface of the top wall 235 and is fitted to the inner peripheral surface of the peripheral wall 221 of the refill container 220. The lower end portion 232 of the side wall 231 is provided with a flange portion 233 extending radially outward and downward. Most of the flange portion 233 is configured as an outer flange portion 233a extending radially outward from the side wall 231, but a part constitutes an inner flange portion 233b extending radially inward from the side wall 231. In the present embodiment, as shown in FIG. 9, the lid 230 can be engaged and fixed to the refill container 220 by undercut engaging the inner flange portion 233b with the engaging protrusion 226 described above.

As shown in FIG. 9, the refill container 220 is shipped and sold with the upper opening 221a closed by the lid 230 with the contents housed in the storage space S3. The lid 230 is fixed by undercut engagement while covering the upper opening 221a of the refill container 220. Therefore, even if the refill container 220 of FIG. 9 is placed in the distribution process without any packaging, the undercut engagement cannot be easily released, so that the lid 230 is intentionally or accidentally opened. It is possible to reduce the possibility of being damaged.

FIG. 10 is a front sectional view showing a state in which the refill container 220 of FIG. 9 is housed in the main body container 210. The main body container 210 includes an outer peripheral wall 211 that covers the peripheral wall 221 of the refill container 220 from the outside in the radial direction, a main body bottom wall 214 that is connected to the lower end of the outer peripheral wall 211 and extends inward in the radial direction, and an inner peripheral end of the main body bottom wall 214. It has a bottom tubular wall 213 extending upward. A protruding ring 213a is provided from the inner peripheral surface of the bottom tubular wall 213 toward the inside in the radial direction. On the other hand, a lid pressing portion 212 capable of upwardly pressing the flange portion 233 of the lid 230 in the state of FIG. 10 is provided near the outer periphery at the upper end of the outer peripheral wall 211. The lid pressing portion 212 has an inclined surface 212a that inclines upward in the radial direction.

In the present embodiment, the lower end portion 232 of the side wall 231 of the lid 230 is formed to be thinner than the flange portion 233. As a result, the flange portion 233 is configured to tilt by elastically deforming the lower end portion 232 when an external force is applied. Therefore, the flange portion 233 presses the lid while the refill container 220 is housed in the main body container 210 along the white arrow in FIG. 10 until the lower surface of the engaging protrusion 226 abuts on the upper end portion of the outer peripheral wall 211. It is pressed upward by the portion 212, and is oriented so as to incline upward in the radial direction following the inclined surface 212a. Due to such tilting of the flange portion 233, the inner flange portion 233b rotates around the lower end portion 232 and moves outward in the radial direction. As a result, the engagement between the inner flange portion 233b and the engaging protrusion 226 is released, so that the user can easily lift and remove the lid 230 upward in FIG. 10.

In the state of FIG. 10 in which the refill container 220 is housed in the main body container 210, the lower end portion of the bottom peripheral wall 224 is inserted into the space between the outer peripheral wall 211 and the bottom cylinder wall 213. Then, the rib 224a provided on the bottom peripheral wall 224 enters between the detent ribs 213b of the bottom tubular wall 213, so that the refill container 220 is fixed to the main body container 210 in a non-rotatable state in the circumferential direction. Further, the fitting claw 223a of the engaging wall 223 hanging from the bottom wall 222 of the refill container 220 undercut engages with the protruding ring 213a, so that the refill container 220 cannot be pulled out upward.

FIG. 11 is a front half cross-sectional view showing a state of the double container 300 according to the present embodiment when used. The user uses the main body lid 240 shown in FIG. 11 after removing the lid 230 that is disengaged from the refill container 220 in FIG. The main body lid 240 has a top wall 243 and a side wall 241 hanging from the outer peripheral end of the top wall 243. The main body lid 240 is attached by screw-engaging the female screw portion 241a provided on the inner peripheral surface of the side wall 241 with the male screw portion 227 arranged on the outer peripheral surface of the upper peripheral surface of the peripheral wall 221 of the refill container 220. In the present embodiment, the outer diameter of the male screw portion 227 is set to be smaller than the outer diameter of the engaging protrusion 226 so that the inner flange portion 233b does not strongly hit the male screw portion 227 when the lid 230 is removed. ing.

FIG. 12 is a front sectional view showing a step of removing the refill container 220 from the double container 300 according to the present embodiment. When the contents in the storage space S3 of the refill container 220 are used up, the user needs to remove the empty refill container 220 from the main body container 210. As shown by the white arrow in FIG. 12, the user presses the main body container 210 containing the used refill container 220 from above against the unused refill container 220 with the lid 230. As shown in FIG. 12, the top wall 235 of the lid 230 is provided with a pressing portion 237 that projects upward. The pressing portion 237 is elastically deformed with respect to a radial pressing force because it has a configuration in which an inclined surface 237a inclined upward in the radial direction and a supporting portion 237b extending in the vertical direction are connected at the upper end. It is difficult to configure. Then, by pressing the engaging wall 223 of the refill container 220 housed in the main body container 210 from below by the inclined surface 237a of the pressing portion 237, the engaging wall 223 exerts a pressing force upward and inward in the radial direction. In response, it elastically deforms inward in the radial direction as shown in FIG. As a result, the engagement between the fitting claw 223a and the protruding ring 213a is released, so that the refill container 220 can be easily taken out from the main body container 210 upward as shown by the thick arrow.

After taking out the used refill container 220 from the main body container 210, the user can use a new refill container 220 in which the contents have been filled in the main body container 210 that has been used so far, as shown in FIG. To accommodate. As a result, the contents can be replenished while repeatedly using the same main body container 210 and main body lid 240.

In the present embodiment, as shown in FIG. 12, the pressing portion 237 is provided with an inclined surface 237a, and the engaging wall 223 is also provided with a fitting claw 223a at the lower end portion so that the inclined surface 223b is provided. It is formed. Then, when the inclined surfaces 237a and 223b that incline upward in the radial direction come into contact with each other, the engaging wall 223 elastically deforms inward in the radial direction under the pressing force upward and inward in the radial direction. However, the present invention is not limited to this mode, and for example, the engaging wall 223 is elastically deformed and fitted inward in the radial direction by abutting the pressing portion 237 having no inclined surface on the inclined surface 223b of the engaging wall 223. It may be configured to disengage the joint claw 223a and the protruding ring 213a. Further, the inclined surface 237a may elastically deform the engaging wall 223 having no inclined surface inward in the radial direction by pressing upward and inward in the radial direction.

Further, in the present embodiment, the main body lid 240 and the refill container 220 are fixed by screw engagement, but the present embodiment is not limited to this embodiment. The main body lid 240 may also be configured to be fixed by an undercut engagement having a small plugging force. In that case, it is preferable that the protrusion that engages with the main body lid 240 is configured so that the amount of protrusion is smaller than that of the engaging protrusion 226 for fixing the lid 230 so as not to hinder the removal of the lid 230.

Further, in the present embodiment, the lid pressing portion 212 is configured to have an inclined surface 212a, but the present embodiment is not limited to this aspect. The lid pressing portion 212 may be a protrusion or the like that projects upward as long as it can press the portion of the flange portion 233 that is closer to the outer side in the radial direction upward.

Further, in the present embodiment, as shown in FIG. 9 and the like, the flange portion 233 is configured to be inclined downward toward the outer side in the radial direction, but the present invention is not limited to this embodiment. The flange portion 233 may be configured to extend horizontally, for example, outward in the radial direction. By pressing the flange portion 233 from the lid pressing portion 212, a constant tilt angle can be secured around the lower end portion 232, and the inner flange portion 233b and the engaging protrusion 226 are changed from the engaged state to the disengaged state. It suffices if it can be transitioned.

As described above, in the present embodiment, when the lid 230 is fixed to the refill container 220 by undercut engagement and the refill container 220 with the lid 230 is housed in the main container 210, the lid pressing portion 212 By tilting the flange portion 233 of the lid 230, the engagement between the lid 230 and the refill container 220 is easily released. This makes it possible to reduce the possibility that the lid 230 is intentionally or accidentally opened even if the refill container 220 is placed in the distribution stage without being packaged. On the other hand, the lid 230 can be easily removed from the refill container 220 by a normal operation in the use stage of accommodating the refill container 220 in the main body container 210.

Further, in the present embodiment, the fitting claw 223a provided on the engaging wall 223 hanging from the bottom wall 222 of the refill container 220 undercut engages with the protruding ring 213a arranged at the bottom of the main body container 210. The refill container 220 was prevented from easily coming off from the main body container 210 during use. On the other hand, after using the contents in the refill container 220, as shown in FIG. 12, the main body container 210 containing the used refill container 220 is replaced with the new refill container 220 filled with the contents. By pressing against the lid 230 from above, the pressing portion 237 provided on the upper surface of the lid 230 elastically deforms the engaging wall 223 inward in the radial direction. As a result, the engagement between the fitting claw 223a and the protruding ring 213a can be easily disengaged, so that the used refill container 220 can be easily removed from the main body container 210 without using a new tool or the like.

Further, in the present embodiment, a male screw portion 227 (engagement portion) capable of engaging with the main body lid 240 is provided above the engagement protrusion 226, and the outer diameter of the male screw portion 227 is smaller than the outer diameter of the engagement protrusion 226. It was configured to be. As a result, the main body lid 240 can be attached to and detached from the refill container 220 in addition to the lid 230, and the male screw portion 227 can be prevented from becoming an obstacle when the lid 230 is removed.

Further, in the present embodiment, the pressing portion 237 provided on the upper surface of the lid 230 is configured to have an inclined surface 237a that inclines upward in the radial direction. As a result, the engaging wall 223 can be efficiently deformed inward in the radial direction by the pressing force from the pressing portion 237, and the engagement between the fitting claw 223a and the protruding ring 213a can be released.

Further, in the present embodiment, the lid pressing portion 212 is configured to have an inclined surface 212a that inclines upward in the radial direction. As a result, the flange portion 233 can be tilted so as to follow the inclined surface 212a, so that the flange portion 233 can be tilted at a more desired angle to ensure the engagement between the inner flange portion 233b and the engaging projection 226. It can be released.

FIG. 13 is a front sectional view of the refill container 320 and the lid 330 constituting the double container 400 according to the fourth embodiment of the present invention. The double container 400 according to the present embodiment has a main body container 310 and a main body lid 340 in addition to the refill container 320 and the lid 330, which will be described in detail later with reference to FIG. 15 and the like.

The refill container 320 has a cylindrical peripheral wall 321 and a bottom wall 322 that closes the lower end of the peripheral wall 321, and accommodates the contents in the accommodation space S4. Immediately below the male threaded portion 327 on the upper part of the outer peripheral surface of the peripheral wall 321, an engaging projection 326 for fixing the lid 330 to the refill container 320 by undercut engagement is provided so as to project outward in the radial direction. The upper end of the peripheral wall 321 constitutes an upper opening 321a and is closed by being covered with a lid 330 from above. At the lower end of the peripheral wall 321, a bottom peripheral wall 324 extending further downward beyond the bottom wall 322 is arranged, and ribs 324a are provided on the inner peripheral surface of the bottom peripheral wall 324 at regular intervals in the circumferential direction. There is. Further, the engaging wall 323 hangs downward from the bottom wall 322 on the radial inside of the bottom peripheral wall 324. Then, the fitting claw 323a protrudes outward in the radial direction on the outer peripheral surface of the lower end portion of the engaging wall 323. In the present embodiment, the engaging walls 323 are intermittently arranged at four locations in the circumferential direction at equal intervals. Therefore, each engaging wall 323 can be elastically deformed independently in the radial direction.

As shown in FIG. 13, a lid 330 is attached to the upper opening 321a of the refill container 320 by undercut engagement. The lid 330 has a top wall 335 that covers the upper opening 321a and a side wall 331 that hangs downward from the outer peripheral end of the top wall 335. A seal wall 336 hangs down from the lower surface of the top wall 335 and is fitted to the inner peripheral surface of the peripheral wall 321 of the refill container 320. An inner protrusion 332 is arranged on the inner peripheral surface of the side wall 331, and the lid 330 can be engaged and fixed to the refill container 320 by undercut engagement with the above-mentioned engaging protrusion 326.

The lower end portion 333 of the side wall 331 is formed in a triangular wave shape as shown in FIG. 13, and as will be described later, the lower end portion 333 and the lid pressing portion 312 of the main body container 310 have irregularities in the vertical direction in the circumferential direction. There is a complementary shape relationship that changes in synchronization. That is, the lid pressing portion 312 has a downward concave shape at the circumferential position where the lower end portion 333 has a downward convex shape, and the lid pressing portion 312 has a downward concave shape at the peripheral position where the lower end portion 333 has an upward concave shape. It has a convex shape on the top.

As shown in FIG. 13, the refill container 320 is shipped and sold with the upper opening 321a closed by the lid 330 in a state where the contents are housed in the storage space S4. The lid 330 is fixed by undercut engagement while covering the upper opening 321a of the refill container 320. Therefore, even if the refill container 320 of FIG. 13 is placed in the distribution process without any packaging, the undercut engagement cannot be easily released, so that the lid 330 is intentionally or accidentally opened. It is possible to reduce the possibility of being damaged.

FIG. 14 is a front sectional view showing a state in which the refill container 320 of FIG. 13 is housed in the main body container 310. The main body container 310 includes an outer peripheral wall 311 that covers the peripheral wall 321 of the refill container 320 from the outside in the radial direction, a main body bottom wall 314 that is connected to the lower end of the outer peripheral wall 311 and extends inward in the radial direction, and an inner peripheral end of the main body bottom wall 314. It has a bottom tubular wall 313 extending upward. A protruding ring 313a is provided from the inner peripheral surface of the bottom tubular wall 313 toward the inside in the radial direction.

In the state of FIG. 14 in which the refill container 320 is housed in the main body container 310, the lower end portion of the bottom peripheral wall 324 is inserted into the space between the outer peripheral wall 311 and the bottom tubular wall 313. Then, the rib 324a provided on the bottom peripheral wall 324 enters between the detent ribs 313b of the bottom tubular wall 313, so that the refill container 320 is fixed to the main body container 310 in a non-rotatable state in the circumferential direction. Further, the fitting claw 323a of the engaging wall 323 hanging from the bottom wall 322 of the refill container 320 undercuts and engages with the protruding ring 313a, so that the refill container 320 cannot be pulled out upward.

A lid pressing portion 312 capable of upwardly pressing the lower end portion 333 of the side wall 331 of the lid 330 is provided at the upper end of the outer peripheral wall 311. The lid pressing portion 312 is formed in a triangular wavy shape, and as described above, has a complementary shape with the lower end portion 333 of the side wall 331 of the lid 330 in which the unevenness in the vertical direction changes in synchronization with the circumferential direction. There is a relationship. Then, when the refill container 320 to which the lid body 330 is mounted is housed in the main body container 310, the rib 324a and the detent rib 313b are fitted so that the phases of the complementary shapes match, so that the lower end of the side wall 331 is fitted. The portion 333 and the lid pressing portion 312 are in a state of being close to each other at a distance shorter than the length of the triangular wave in the vertical direction.

The user grips the lid 330, for example, the side wall 331 in the state of FIG. 14 in which the lower end 333 of the side wall 331 and the triangular wave of the lid pressing portion 312 mesh with each other and the two are closer than the vertical length of the triangular wave. While rotating in the circumferential direction. At this time, since the rib 324a meshes with the detent rib 313b and does not rotate relative to the refill container 320 and the main body container 310, only the lid 330 rotates in the circumferential direction with respect to the main body container 310 and the refill container 320. Then, the triangular wave of the lid pressing portion 312 and the triangular wave of the lower end portion 333 of the side wall 331 are out of phase in the circumferential direction, so that the triangular wave on the lower end portion 333 side is upward along the oblique side of the triangular wave on the lid pressing portion 312 side. The refill container 320 and the lid 330 are separated from each other in the vertical direction. At this time, since the inner protrusion 332 gets over the engaging protrusion 326 and moves upward, the undercut engagement between the two is released. As a result, the user can easily lift and remove the lid 330 upward.

In this embodiment, the lower end portion 333 of the side wall 331 and the lid pressing portion 312 are configured to be close to each other at a distance shorter than the vertical length of the triangular wave. When the distance between the two is longer than the vertical length of the triangular wave, even if the lid 330 is rotated in the circumferential direction, the lower end 333 and the lid pressing portion 312 do not come into contact with each other, so that the lid 330 is pressed upward. This is because force does not work.

FIG. 15 is a front half cross-sectional view showing a state of the double container 400 according to the present embodiment when used. The user uses the main body lid 340 shown in FIG. 15 after removing the lid 330 that is disengaged from the refill container 320 in FIG. The main body lid 340 has a top wall 343 and a side wall 341 hanging from the outer peripheral end of the top wall 343. The main body lid 340 is attached by screw-engaging the female screw portion 341a provided on the inner peripheral surface of the side wall 341 with the male screw portion 327 arranged on the outer peripheral surface of the upper peripheral surface of the peripheral wall 321 of the refill container 320. In the present embodiment, the outer diameter of the male screw portion 327 is set to be smaller than the outer diameter of the engaging protrusion 326 so that the inner protrusion 332 does not strongly hit the male screw portion 327 when the lid 330 is removed. ing.

FIG. 16 is a front sectional view showing a step of removing the refill container 320 from the double container 400 according to the present embodiment. When the contents in the storage space S4 of the refill container 320 are used up, the user needs to remove the empty refill container 320 from the main body container 310. As shown by the white arrow in FIG. 16, the user presses the main body container 310 containing the used refill container 320 from above against the unused refill container 320 with the lid 330. As shown in FIG. 16, the top wall 335 of the lid 330 is provided with a pressing portion 337 that projects upward. The pressing portion 337 is elastically deformed with respect to a pressing force in the radial direction because it has a configuration in which an inclined surface 337a inclined upward in the radial direction and a supporting portion 337b extending in the vertical direction are connected at the upper end. It is difficult to configure. Then, by pressing the engaging wall 323 of the refill container 320 housed in the main body container 310 from below by the inclined surface 337a of the pressing portion 337, the engaging wall 323 exerts a pressing force upward and inward in the radial direction. In response, it elastically deforms inward in the radial direction as shown in FIG. As a result, the engagement between the fitting claw 323a and the protruding ring 313a is released, so that the refill container 320 can be easily taken out from the main body container 310 upward as shown by the thick line arrow.

After removing the used refill container 320 from the main body container 310, the user can use a new refill container 320 in which the contents have been filled in the main body container 310 that has been used so far, as shown in FIG. To accommodate. As a result, the contents can be replenished while repeatedly using the same main body container 310 and main body lid 340.

In the present embodiment, as shown in FIG. 16, the pressing portion 337 is provided with an inclined surface 337a, and the engaging wall 323 is also provided with a fitting claw 323a at the lower end portion so that the inclined surface 323b is provided. It is formed. Then, when the inclined surfaces 337a and 323b that incline upward in the radial direction come into contact with each other, the engaging wall 323 elastically deforms inward in the radial direction under the pressing force upward and inward in the radial direction. However, the present invention is not limited to this mode, and for example, the engaging wall 323 is elastically deformed and fitted inward in the radial direction by abutting the pressing portion 337 having no inclined surface on the inclined surface 323b of the engaging wall 323. It may be configured to disengage the joint claw 323a and the protruding ring 313a. Further, the inclined surface 337a may elastically deform the engaging wall 323 having no inclined surface inward in the radial direction by pressing upward and inward in the radial direction.

Further, in the present embodiment, the main body lid 340 and the refill container 320 are fixed by screw engagement, but the present embodiment is not limited to this embodiment. The main body lid 340 may also be configured to be fixed by an undercut engagement having a small plugging force. In that case, it is preferable that the protrusion that engages with the main body lid 340 is configured so that the amount of protrusion is smaller than that of the engaging protrusion 326 for fixing the lid 330 so as not to hinder the removal of the lid 330.

Further, in the present embodiment, the lid pressing portion 312 and the lower end portion 333 of the side wall 331 of the lid 330 are both configured to have a triangular wave shape, but the present embodiment is not limited to this embodiment. For example, both may be configured to have a sinusoidal shape. Further, it is not necessary that the lid pressing portion 312 and the lower end portion 333 of the side wall 331 have a strictly complementary shape. Even if the shapes of the two are different, the underket engagement can be released by the rotation operation of the lid 330 as long as they have substantially the same vertical length and phase. Therefore, for example, it may be a combination of a triangular wave and a sine wave.

Further, in the present embodiment, the triangular wave shape on the lid 330 side and the main body container 310 side is provided over the entire circumference, but the present embodiment is not limited to this embodiment. The triangular wave shape may be configured to be provided only in a part in the circumferential direction. However, since the force for lifting the lid 330 upward with respect to the refill container 320 is generated by this triangular wave shape, when the triangular wave shape is provided in a part in the circumferential direction, at least two places facing each other from the viewpoint of balance. It is preferable to provide in. This is the same even if the complementary shape is a shape other than the triangular wave.

As described above, in the present embodiment, when the lid 330 is fixed to the refill container 320 by undercut engagement and the refill container 320 with the lid 330 is housed in the main container 310, the lid 330 side and the lid 330 side are formed. The complementary shapes on the main body container 310 side are configured to face each other in close proximity. This makes it possible to reduce the possibility that the lid 330 is intentionally or accidentally opened even if the refill container 320 is placed in the distribution stage without being packaged. On the other hand, during the normal operation in the stage of use in which the refill container 320 is housed in the main container 310, the lid 330 can be easily removed from the refill container 320 only by rotating the lid 330 in the circumferential direction.

Further, in the present embodiment, the fitting claw 323a provided on the engaging wall 323 hanging from the bottom wall 322 of the refill container 320 undercut engages with the protruding ring 313a arranged at the bottom of the main body container 310. The refill container 320 was prevented from easily coming off from the main body container 310 during use. On the other hand, after using the contents in the refill container 320, as shown in FIG. 16, the main body container 310 containing the used refill container 320 is replaced with the new refill container 320 filled with the contents. By pressing against the lid 330 from above, the pressing portion 337 provided on the upper surface of the lid 330 elastically deforms the engaging wall 323 inward in the radial direction. As a result, the engagement between the fitting claw 323a and the protruding ring 313a is easily disengaged, so that the used refill container 320 can be easily removed from the main body container 310 without using a new instrument or the like.

Further, in the present embodiment, a male screw portion 327 (engagement portion) capable of engaging with the main body lid 340 is provided above the engagement protrusion 326, and the outer diameter of the male screw portion 327 is smaller than the outer diameter of the engagement protrusion 326. It was configured to be. As a result, the main body lid 340 can be attached to and detached from the refill container 320 in addition to the lid 330, and the male screw portion 327 can be prevented from becoming an obstacle when the lid 330 is removed.

Further, in the present embodiment, the pressing portion 337 provided on the upper surface of the lid 330 is configured to have an inclined surface 337a that inclines upward in the radial direction. As a result, the engaging wall 323 can be efficiently deformed inward in the radial direction by the pressing force from the pressing portion 337, and the engagement between the fitting claw 323a and the protruding ring 313a can be released.

Further, in the present embodiment, the lower end portion 333 of the side wall 331 of the lid body 330 and the lid body pressing portion 312 of the main body container 310 are configured to have a triangular wave or a sine wave shape. As a result, by rotating the lid 330 in the circumferential direction from the state shown in FIG. 14, a force for releasing the undercut engagement between the lid 330 and the refill container 320 can be efficiently generated.

Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and modifications based on the present disclosure. Therefore, it should be noted that these modifications and modifications are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to be logically inconsistent, and a plurality of components can be combined or divided into one. It should be understood that these are also included in the scope of the present invention.

10,110 Main container 11,111 Outer wall 11a, 111a Upper end 12,112 Bottom 12a Ring 12b Bottom tubular wall 12c Bottom inner wall 12d, 112d Engagement hole (engagement part)
20,120 Refill container 21,121 Peripheral wall 21a, 121a Top opening 22,122 Bottom wall 23,123 Engagement wall 23a, 123a Engagement protrusion 23b, 123b Inclined surface 26,126 Protrusion 27,127 Male thread portion 30,130 Closure 31,131 Side wall 35,135 Top wall 37 Pressing part 37a Inclined surface 37b Support part 40,140 Pump 41,141 Pipe 42,142 Base cap 42a, 142a Female threaded part 42b, 142b Fitting part 43,143 Pump body 43a , 143a Flange 44,144 Nozzle head 44a, 144a Discharge hole 50 Lid 51a Female thread 55 Top wall 100, 200, 300, 400 Double container 112a Fitting hole 112c Bottom wall 150 Pressing member 155 Central wall 157 Pressing part 157a Inclined Surface 157b Support 158 Ring wall 159 Fitting wall 159a Fitting protrusion 210 Main body container 211 Outer wall 212 Lid pressing part 212a Inclined surface 213 Bottom tubular wall 213a Protruding ring 213b Anti-rotation rib 214 Main body bottom wall 220 Refill container 221 Circumferential wall 221a Top opening 222 Bottom wall 223 Engagement wall 223a Fitting claw 223b Inclined surface 224 Bottom peripheral wall 224a Rib 226 Engagement protrusion 227 Male screw part 230 Lid 231 Side wall 232 Lower end part 233 Flange part 233a Outer flange part 233b Inner flange part 235 Wall 237 Pressing part 237a Inclined surface 237b Support part 240 Main body lid 241 Side wall 241a Female thread part 243 Top wall 310 Main body container 311 Outer wall 312 Lid body Pressing part 312a Inclined surface 313 Bottom cylinder wall 313a Protruding ring 313b 320 Refill container 321 Peripheral wall 321a Top opening 322 Bottom wall 323 Engagement wall 323a Fitting claw 323b Inclined surface 324 Bottom peripheral wall 324a Rib 326 Engagement protrusion 327 Male screw part 330 Lid 331 Side wall 332 Inner protrusion 333 Pressing part 337a Inclined surface 337b Support part 340 Main body lid 341 Side wall 341a Female thread part 343 Top wall O1, O2, O3, O4 Center axis S1, S2, S3, S4 Space

Claims (5)

A refill container having a cylindrical peripheral wall and a bottom wall that closes the lower end of the peripheral wall and accommodating the contents.
A lid covering the upper opening of the refill container and
A double container having an outer peripheral wall that covers the peripheral wall from the outside in the radial direction and a main body container that houses the refill container in a detachable and replaceable manner.
The refill container has an engaging protrusion that protrudes below the bottom wall in a direction orthogonal to the central axis.
An engaging portion with which the engaging protrusion is engaged is provided on the bottom of the main body container.
At least one of the top wall of the lid and the lower position of the engaging portion in the main body container is provided with a pressing portion provided corresponding to the position of the engaging protrusion in a plan view. And
At least one of the pressing portion and the engaging protrusion is provided with an inclined surface that inclines upward in the protruding direction of the engaging protrusion.
The pressing portion has a structure in which an inclined surface that inclines upward in the radial direction and a supporting portion that extends in the vertical direction are connected at the upper end to form a hollow container. .. The engaging protrusion is provided on the engaging wall extending downward from the bottom wall.
The double container according to claim 1, wherein the engaging portion is an engaging hole provided at the bottom of the main body container. The double container according to claim 1 or 2, wherein the engaging protrusion protrudes outward in the radial direction, and the inclined surface inclines upward in the radial direction. The double container according to any one of claims 1 to 3, wherein the pressing portion is provided on a pressing member fixed to the bottom of the main body container. The double container according to any one of claims 1 to 4, wherein the engaging protrusions are intermittently provided at a plurality of locations in the circumferential direction.

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