JP6442324B2 - Double container - Google Patents

Description

  The present invention relates to a double container.

  As a double container, for example, as shown in Patent Document 1 below, a bottomed cylindrical inner container in which contents are stored, a bottomed cylindrical outer container in which the inner container is stored, and a mouth of the inner container There is known a double container including a discharger attached to the part and a cover that covers the inner container from above with the discharger exposed and is attached to the outer container.

  A plurality of locking recesses are formed on the opening edge of the outer container at intervals in the circumferential direction. A plurality of guide grooves arranged at intervals in the circumferential direction are formed on the outer peripheral surface of the outer container. The inner container is formed with a plurality of locking projections that protrude toward the outer container and that are locked to the locking recesses in the circumferential direction. The cover is formed with a plurality of guide projections that are fitted in the guide groove and locked to the guide groove by rotation around the container axis with respect to the outer container at intervals in the circumferential direction.

  Therefore, when this double container is assembled, the inner container is accommodated in the outer container while the locking convex part is locked in the locking concave part. Thereby, an inner container and an outer container can be combined in the state positioned in the circumferential direction. Thereafter, the guide protrusion is fitted into the guide groove, and is rotated so as to screw the cover into the outer container. Thereby, a cover can be attached to the outer container, and the inner container can be prevented from coming off by the cover. For example, the discharger is attached to the inner container before the inner container is accommodated in the outer container or after the cover is attached.

JP 2004-106939 A

  However, in the conventional double container, when combining the outer container and the inner container, it is necessary to align the locking convex part of the inner container and the locking concave part of the outer container in the circumferential direction, The assembly workability (setability) was poor and there was room for improvement.

  This invention is made | formed in view of such a situation, The objective is to provide the double container excellent in assembly workability | operativity.

In order to achieve the above object, the present invention provides the following means.
(1) The double container according to the present invention includes an inner container in which contents are accommodated, an outer container in which the inner container is accommodated, and a first locked portion formed in a mouth portion of the inner container. A first locking portion that is locked by rotation, and a second locking portion that is locked by rotation on a second locked portion formed in the mouth of the outer container, with the container axis as the center And a top-mounted mounting cap that fixes the inner container to the outer container in accordance with a rotation operation from one side to the other side in the circumferential direction, the inner container and the outer container, With the relative rotation operation of the mounting cap to the other side with respect to the inner container and the outer container, the mounting cap is mounted on the opening cap, and the opening edge of the mouth portion of the outer container has a circumferential direction. An inclined wall that gradually becomes deeper along the container axial direction from the one side to the other side. Wherein among the circumferential direction of the inclined wall disposed on the other side, the circumferential direction of the one facing the side engagement surface, the recess is formed with a, the inner container is housed in the recess portion, In addition, a locking projection that protrudes on the locking surface by moving on the inclined wall as the mounting cap rotates to the other side is provided.

According to this double container, with the inner container accommodated in the outer container, the mounting cap is rotated around the container axis from one side in the circumferential direction to the other side with respect to the outer container and the inner container. The first locking portion starts to be locked to the first locked portion of the inner container, and the second locking portion starts to lock to the second locked portion of the outer container. It is possible to start locking the outer container and the inner container together. At this time, in the initial stage of rotation of the mounting cap, the inner container is rotated around the container axis along with the rotation of the mounting cap while being slightly locked to the mounting cap (sweet bite state). Move toward the other side in the circumferential direction. As a result, the locking protrusion of the inner container moves on the inclined wall to the other side in the circumferential direction along the inclined wall, and then locks to the locking surface while being accommodated in the recess. Thereby, the movement to the other side of the circumferential direction of the inner container with respect to an outer container is controlled.
Therefore, since the inner container can be prevented from co-rotating with the mounting cap thereafter, the mounting cap can be moved to the other side in the circumferential direction with respect to the inner container with further rotation operation of the mounting cap. Locking can be performed reliably by tightening or the like. Thereby, mounting | wearing of the mounting cap with respect to an inner container can be completed.

  In addition, since the mounting cap is attached to the outer container along with the mounting of the mounting cap on the inner container, the mounting of the mounting cap onto the outer container can be completed when the mounting of the mounting cap onto the inner container is completed. Thereby, an inner container, an outer container, and a mounting cap can be combined with each other, and a double container in which the inner container is fixed to the outer container via the mounting cap can be obtained.

In particular, the inner container can be rotated together with the rotation operation of the mounting cap, and the locking protrusion of the inner container can be moved on the inclined wall to be locked to the locking surface. Relative circumferential positioning can be performed. Accordingly, when the inner container is accommodated in the outer container, the outer container and the inner container can be combined without being aligned with each other in the circumferential direction, so that the assembly workability of the double container can be improved.
Furthermore, by simply rotating the mounting cap, the mounting operation for mounting the mounting cap on the inner container and the mounting operation for mounting the mounting cap on the outer container can be performed simultaneously in a series of flows. This also improves the assembly workability of the double container.

(2) The inclined wall may be formed such that an inclination gradient is equal to a ratio of a movement amount in the container axial direction to a relative movement amount of the outer container and the mounting cap in the circumferential direction.

  In this case, since the inclination of the inclined wall is equal to the above ratio, the attaching operation of the attaching cap to the outer container and the movement operation of the locking projection on the inclined wall due to the co-rotation of the inner container are less likely to be caught. The assembly work of the double container can be performed more smoothly.

(3) The inner container and the outer container may be formed with a restricting portion that restricts the locking protrusion from moving from the locking surface to the one side in the circumferential direction.

  In this case, when the mounting cap is removed by rotating the mounting cap relative to the inner container and the outer container from the other side in the circumferential direction, the locking projection is separated from the locking surface. Can be restricted to move to. Thereby, it is possible to smoothly remove only the mounting cap from the inner container and the outer container without rotating the inner container relative to the outer container. Therefore, for example, the contents can be easily filled in the inner container accommodated in the outer container, and the convenience can be improved.

  According to the double container of the present invention, the mounting operation of the mounting cap on the inner container and the mounting operation of the mounting cap on the outer container can be performed simultaneously in a series of flows. Further, even if the inner container is accommodated in the outer container without positioning the outer container and the inner container in the circumferential direction, the relative positioning of the outer container and the inner container is finally performed. be able to. Therefore, the assembly workability of the double container can be improved.

It is a longitudinal section showing a 1st embodiment of a double container concerning the present invention. It is a top view of the outer container shown in FIG. It is a partial side view of an outer container which shows the state which the latching protrusion in an inner container has latched to the latching surface in the outer container shown in FIG. It is a top view of the inner container shown in FIG. It is a longitudinal cross-sectional view which shows 1 process at the time of assembling the double container shown in FIG. 1, Comprising: The state which accommodated the inner container in the outer container, and covered the discharge device containing a mounting cap from the upper direction of an inner container. FIG. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the double container which concerns on this invention. It is a side view of the outer container which shows the state which the latching protrusion in an inner container has latched to the latching surface in the outer container shown in FIG. It is sectional drawing along the arrow AA shown in FIG. It is a figure which shows the state before the latching protrusion shown in FIG. 8 latches to a latching surface. It is a figure which shows the modification of the double container which concerns on this invention. It is a figure which shows another modification of the double container which concerns on this invention. It is a figure which shows another modification of the double container which concerns on this invention. FIG. 13 is a diagram showing a state before the locking projection shown in FIG. 12 is locked to the locking surface, and a state in which the convex portion is accommodated in the concave portion of the locking projection.

(First embodiment)
Hereinafter, a first embodiment of a double container according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the double container 1 of the present embodiment includes a bottomed cylindrical inner container 2 in which contents are accommodated, a bottomed cylindrical outer container 3 in which the inner container 2 is accommodated, A discharger 5 having a cap-shaped mounting cap 4 for fixing the inner container 2 to the outer container 3.
In the present embodiment, a case where the mounting cap 4 is coupled (screwed) to the inner container 2 and the outer container 3 by a screwing method will be described as an example.

  In addition, the inner container 2, the outer container 3, and the mounting cap 4 are disposed in a state where the central axes thereof are located on a common axis. In the present embodiment, this common axis is referred to as a container axis O, the mounting cap 4 side along the container axis O is referred to as the upper side, and the bottom 3a side of the outer container 3 is referred to as the lower side. Further, in a plan view viewed from the container axis O direction, a direction orthogonal to the container axis O is referred to as a radial direction, and a direction around the container axis O is referred to as a circumferential direction. Further, in the circumferential direction, the direction in which the container axis O rotates clockwise in the top view of the double container 1 is the first direction L1 (the direction from one side of the circumferential direction toward the other side), and the opposite side is the second direction. It is referred to as direction L2.

The outer container 3 will be described first.
As shown in FIG. 1, the outer container 3 is formed in a bottomed cylindrical shape having a bottom portion 3a, a trunk portion 3b, and a mouth portion 3c. In the illustrated example, the body portion 3b and the mouth portion 3c are formed in a circular shape in a cross-sectional view. However, the shape of the body portion 3b is not limited to this case, and may be formed in an elliptical shape or a polygonal shape in cross section.

The mouth portion 3c has a smaller diameter than the outer diameter of the body portion 3b. However, the inner diameter of the mouth portion 3c is equal to the inner diameter of the trunk portion 3b. A male screw part (second locked part) 10 to which the mounting cap 4 is screwed is formed on the outer peripheral surface of the mouth part 3c.
At this time, the male screw portion 10 is formed in a spiral shape so that the mounting cap 4 is tightened when the mounting cap 4 is rotated relative to the outer container 3 in the first direction L1.

As shown in FIGS. 2 and 3, a recess 15 having an inclined wall 16 inclined along the circumferential direction is formed at the opening edge of the mouth 3 c.
The recess 15 is formed over a portion of the opening edge of the mouth portion 3c except for the horizontal portion 12 that maintains a part of the opening edge horizontally.

The inclined wall 16 extends along the first direction L1 from the first peripheral end portion 12a located on the first direction L1 side in the horizontal portion 12, and the second circumference located on the second direction L2 side in the horizontal portion 12. It forms so that it may become deep toward the downward direction gradually toward the edge part 12b.
Therefore, the side surface of the second peripheral end portion 12b in the horizontal portion 12 is a vertical surface facing the first peripheral end portion 12a side. A side surface of the second peripheral end portion 12b is disposed on the inclined wall 16 on the second direction L2 side, functions as a locking surface 13 facing the first peripheral end portion 12a side, and defines a recessed portion 15. It is a part of the wall.

  The inclined wall 16 is inclined so as to be substantially parallel to the male screw portion 10 formed on the outer peripheral surface of the mouth portion 3c. Thereby, the gradient of the inclined wall 16 (the ratio of the change in depth with respect to the length along the circumferential direction) is moved in the container axis O direction with respect to the relative circumferential movement amount of the outer container 3 and the mounting cap 4. It is equivalent to the proportion of quantity.

As shown in FIGS. 1 and 4, the inner container 2 is formed in a bottomed cylindrical shape having a bottom part 2 a, a body part 2 b, and a mouth part 2 c, and in a state where a gap is provided between the inner container 2 and the outer container 3. 3 is housed inside. In the illustrated example, the body portion 2b and the mouth portion 2c are formed in a circular shape in a cross-sectional view.
However, the shape of the body portion 2b is not limited to this case, and may be formed in, for example, an elliptical shape or a polygonal shape in cross section.

The mouth portion 2 c has a smaller diameter than the body portion 2 b and is located above the mouth portion 3 c of the outer container 3. A male screw portion (first locked portion) 20 to which the mounting cap 4 is screwed is formed on the outer peripheral surface of the mouth portion 2c.
At this time, the male screw portion 20 is formed in a spiral shape so that the mounting cap 4 is tightened when the mounting cap 4 is rotated relative to the inner container 2 in the first direction L1. Therefore, the male screw portion 20 of the inner container 2 and the male screw portion 10 of the outer container 3 have the same spiral direction.

  An annular neck ring 21 protruding outward in the radial direction is formed at the lower end of the mouth 2c. The outer diameter of the neck ring 21 is equal to or less than the inner diameter of the mouth portion 3 c in the outer container 3. Further, the neck ring 21 is formed with a locking projection 22 that protrudes further outward in the radial direction from the outer peripheral edge of the neck ring 21 and is located on the opening edge of the mouth portion 3 c in the outer container 3. .

As shown in FIGS. 3 and 4, the locking protrusion 22 has a thickness that is accommodated in a recess 15 formed in the outer container 3 and is locked to the locking surface 13. . In the illustrated example, the locking projection 22 is formed in a rectangular shape in plan view with a longer circumferential length along the circumferential direction and slightly longer than a protruding amount from the neck ring 21 outward in the radial direction. Further, the first peripheral end surface 22 a located on the first direction L <b> 1 side of the locking protrusion 22 is a vertical surface and is in contact with the locking surface 13. On the other hand, the second peripheral end surface 22b located on the second direction L2 side of the locking projection 22 becomes gradually thicker toward the first direction L1 and is an inclined surface facing the inclined wall 16 side. ing.
Note that the locking projection 22 is formed on the locking surface 13 after the inner container 2 rotates together with the rotation of the mounting cap 4 in the first direction L1 and moves on the inclined wall 16 in the first direction L1. Locked.

  As shown in FIG. 1, the discharger 5 includes the mounting cap 4 and a pump body 30 that is fixed to the mounting cap 4 and discharges the contents stored in the inner container 2.

  The mounting cap 4 is disposed below the first mounting cylinder 41 and the first mounting cylinder 41 surrounding the mouth 2c of the inner container 2 from the radially outer side, and the mouth 3c of the outer container 3 from the radially outer side. The surrounding second mounting cylinder 42, the lower end portion of the first mounting cylinder 41 and the upper end portion of the second mounting cylinder 42 are connected, and the annular flange portion 43 is in contact with the neck ring 21 of the inner container 2 from above. And a guide cylinder 44 that protrudes upward from the upper end of the first mounting cylinder 41 and guides the movement (vertical movement) of the pump head 32, which will be described later, along the container axis O direction.

On the inner peripheral surface of the first mounting cylinder 41, a female screw portion (first locking portion) 45 that is screwed into the male screw portion 20 formed in the mouth portion 2c of the inner container 2 is formed. The male threaded portion 20 of the inner container 2 and the female threaded portion 45 of the mounting cap 4 function as first rotation locking means that locks the inner container 2 and the mounting cap 4 together by rotation.
Further, on the inner peripheral surface of the second mounting cylinder 42, a female screw portion (second locking portion) 46 that is screwed into the male screw portion 10 formed in the mouth portion 3c of the outer container 3 is formed. The male screw portion 10 of the outer container 3 and the female screw 46 of the mounting cap 4 function as second rotation locking means that locks the outer container 3 and the mounting cap 4 together by rotation.

By the first rotation locking means and the second rotation locking means described above, the inner container 2 and the outer container 3 can be rotated relative to the inner container 2 and the outer container 3 in the first direction L1. Accordingly, it is screwed to the mounting cap 4.
That is, by the rotation of the mounting cap 4, the female screw portion 45 is locked to the male screw portion 20 of the inner container 2 by screwing, and the female screw portion 46 is locked to the male screw portion 10 of the outer container 3 by screwing. Thereby, the inner container 2 and the outer container 3 are mounted (screwed) on the mounting cap 4.

An annular wall 47 that protrudes radially inward is formed at a connection portion between the first mounting cylinder 41 and the guide cylinder 44. A support cylinder 48 that supports a pump body 31 described later is formed at the inner end of the annular wall 47. The annular wall 47 is disposed on the opening edge of the mouth portion 2 c of the inner container 2 with the packing 49 interposed therebetween. Thereby, between the inner container 2 and the mounting | wearing cap 4 is sealed airtight or liquid-tight, for example.
Instead of the packing 49, for example, an annular seal cylinder (inner ring) is formed on the annular wall 47, which protrudes downward from the annular wall 47 and fits inside the mouth portion 2c of the inner container 2. Thus, the space between the inner container 2 and the mounting cap 4 may be sealed.

The pump body 30 includes a cylindrical pump body 31 supported by a support cylinder 48 in the mounting cap 4, and a pump head 32 mounted on the upper end portion of the pump body 31.
The pump body 31 is disposed in the mounting cap 4 and the inner container 2. An introduction path (not shown) through which the contents accommodated in the inner container 2 circulate is formed inside the pump body 31. The introduction path has a lower end side communicating with the inside of the inner container 2 via the suction cylinder 33 and an upper end side communicating with a discharge port 32a (described later) of the pump head 32.

  The pump head 32 is disposed at the upper end of the pump head 32 so as to be pushed down in an upwardly biased state. The outer diameter of the pump head 32 is smaller than the inner diameter of the guide tube 44. Thereby, the pump head 32 can be moved along the container axis O inside the guide tube 44. The pump head 32 is formed with a discharge port 32a for discharging the contents introduced into the introduction passage of the pump body 31 to the outside.

The mounting cap 4 is mounted with a decorative cover 50 that covers a part of the guide tube 44, the first mounting tube 41, and the flange portion 43 from the outside in the radial direction.
The decorative cover 50 covers the opening end edge of the guide tube 44 and is attached so as to be mainly covered on the outer peripheral surface of the first mounting tube 41. An annular engagement protrusion 51 that protrudes radially outward is formed on a portion of the decorative cover 50 that is positioned radially outward with respect to the first mounting cylinder 41.
A head cover 55 having a cylindrical shape covering the pump head 32 is detachably attached to the decorative cover 50 and is undercut fitted to the engagement protrusion 51.

  The decorative cover 50 is not essential and may not be provided. In this case, for example, the engagement protrusion 51 may be formed on the first mounting cylinder 41 and the head cover 55 may be undercut fitted. Further, the head cover 55 itself is not essential and may not be provided.

(Operation of double container)
Next, the operation of the double container 1 configured as described above will be described. In the following description, the assembly of the double container 1 will be mainly described.

  First, as shown in FIG. 5, the inner container 2 is accommodated in the outer container 3 from above. At this time, it is not necessary to align the outer container 3 and the inner container 2 in the circumferential direction. Therefore, the engagement protrusion 51 of the inner container 2 is disposed at an arbitrary position on the opening edge of the mouth portion 3 c in the outer container 3. In the illustrated example, the case where the locking protrusion 22 is disposed on the horizontal portion 12 is taken as an example. However, the locking protrusion 22 may be disposed at any position on the inclined wall 16 in the outer container 3.

  Next, the discharge device 5 in which the mounting cap 4 and the pump body 30 are combined is covered from above the inner container 2, and the mounting cap 4 is rotated relative to the inner container 2 and the outer container 3 in the first direction L1. . As a result, the female screw portion 45 of the mounting cap 4 and the male screw portion 20 of the inner container 2 begin to be screwed (locked), and the female screw portion 46 of the mounting cap 4 and the male screw portion 10 of the outer container 3 are screwed together ( Start to lock).

At this time, at the initial stage of rotation of the mounting cap 4, the inner container 2 is slightly screwed with the mounting cap 4 (sweet bite state), and rotates around the container axis O as the mounting cap 4 rotates. It rotates together and moves toward the first direction L1 relative to the outer container 3.
As a result, as shown in FIG. 3, the locking protrusion 22 of the inner container 2 moves on the inclined wall 16 along the inclined wall 16 in the first direction L1. When the inner container 2 further moves in the first direction L <b> 1 together with the mounting cap 4, the first peripheral end surface 22 a of the locking projection 22 contacts the locking surface 13. Thereby, the locking protrusion 22 is locked to the locking surface 13 in a state of being accommodated in the recess 15. Therefore, the movement of the inner container 2 with respect to the outer container 3 in the first direction L1 is restricted.

Accordingly, since the inner container 2 can be prevented from co-rotating with the mounting cap 4 thereafter, the mounting cap 4 is moved in the first direction L1 with respect to the inner container 2 as the mounting cap 4 is further rotated. Can be tightened. Thereby, mounting | wearing (screwing) of the mounting cap 4 with respect to the inner container 2 can be completed.
Therefore, as shown in FIG. 1, the packing 49 can be reliably sandwiched between the mounting cap 4 and the opening edge of the inner container 2, and the sealing performance between the mounting cap 4 and the inner container 2 is ensured. can do.

Further, since the mounting cap 4 is screwed to the outer container 3 together with the mounting of the mounting cap 4 to the inner container 2 described above, the mounting cap to the outer container 3 is completed when the mounting of the mounting cap 4 to the inner container 2 is completed. 4 (screwing) can be completed.
Accordingly, the discharge container 5 having the inner container 2, the outer container 3, and the mounting cap 4 can be combined with each other, and the double container 1 in which the inner container 2 is fixed to the outer container 3 through the mounting cap 4. Can be obtained.
It should be noted that screwing of the mounting cap 4 to the outer container 3 does not need to be completely tightened, and can be at least so that the outer container cannot be removed from the mounting cap 4.

In particular, the inner container 2 can be rotated together with the rotation operation of the mounting cap 4, and the locking projection 22 of the inner container 2 can be moved on the inclined wall 16 to be locked to the locking surface 13, so that the outer The relative circumferential positioning of the container 3 and the inner container 2 can be performed.
Therefore, when the inner container 2 is accommodated in the outer container 3, the outer container 3 and the inner container 2 can be combined with each other without extra care without aligning the outer container 3 and the inner container 2 with each other in the circumferential direction. The assembly workability of the double container 1 can be improved.

Furthermore, the mounting operation of the mounting cap 4 to the inner container 2 and the mounting operation of the mounting cap 4 to the outer container 3 can be performed simultaneously in a series of flows only by rotating the mounting cap 4. Also by this, the assembly workability | operativity of the double container 1 can be improved.
In addition, the mounting operation of the mounting cap 4 with respect to the inner container 2 and the mounting operation of the mounting cap 4 with respect to the outer container 3 can be performed simultaneously in a series of flows only by rotating the mounting cap 4. The double container 1 can be assembled simply by housing the inner container 2 in the container 3 and then rotating the mounting cap 4. Accordingly, the replacement (exchange) of the inner container 2 can be performed easily and reliably, and the convenience can be improved.

In addition, since the inclined wall 16 is inclined so as to be substantially parallel to the male screw portion 10 formed in the mouth portion 3 c of the outer container 3, the inclination of the inclined wall 16 can be reduced between the outer container 3 and the mounting cap 4. It is equivalent to the ratio of the movement amount in the container axis O direction to the relative movement amount in the circumferential direction.
Accordingly, the screwing operation (mounting operation) of the mounting cap 4 with respect to the outer container 3 and the movement operation of the locking projection 22 on the inclined wall 16 due to the co-rotation of the inner container 2 can be smoothly performed with little catch. Therefore, the assembly operation of the double container 1 can be performed more smoothly.

In addition, according to the double container 1 of the present embodiment, even if the inner container 2 is accommodated in the outer container 3 without aligning the outer container 3 and the inner container 2 in the circumferential direction as described above, Finally, the relative circumferential positioning of the outer container 3 and the inner container 2 can be performed.
Therefore, for example, when the outer container 3 is a transparent container and the inner container 2 and the outer container 3 are decorated, the double container 1 can be obtained by appropriately combining these decorated portions. Therefore, it can be set as the double container excellent in design property. Moreover, it is easy to cope with automation using an automatic assembly machine.

(Second Embodiment)
Next, a second embodiment of the double container according to the present invention will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 6-8, the double container 60 of this embodiment is further provided with the control protrusion 61 which protrudes toward the radial direction outer side from the outer periphery of the neck ring 21 of the inner container 2. As shown in FIG. The restricting protrusion 61 is disposed at a position slightly away from the locking protrusion 22 in the first direction L1, and both the protrusion amount toward the radially outer side and the circumferential length along the circumferential direction are both the locking protrusion 22. Shorter than.

Further, an annular engaging portion 62 that protrudes downward and engages with the inside of the mouth portion 3 c in the outer container 3 is provided on the outer peripheral edge of the neck ring 21 of the inner container 2.
Note that the engaging portion 62 does not need to be annular (cylindrical), and may be formed in, for example, a protruding shape and spaced apart in the circumferential direction.

Further, when the locking projection 22 is locked to the locking surface 13 on the inner peripheral surface of the horizontal portion 12 in the outer container 3, the locking hole into which the restriction projection 61 of the inner container 2 enters and is locked. 63 is formed. When the restricting protrusion 61 is engaged with the engaging hole 63, the engaging protrusion 22 is restricted from moving in the second direction L2 from the engaging surface 13.
Therefore, the restriction protrusion 61 and the engagement hole 63 described above function as a restriction portion 64 that restricts the movement of the engagement protrusion 22 from the engagement surface 13 in the second direction L2.

According to the double container 60 configured as described above, the same operational effects as those of the first embodiment can be achieved when the assembling work is performed. In addition, the following effects can be achieved.
That is, when the inner container 2 rotates together with the rotation of the mounting cap 4, as shown in FIG. 9, the locking projection 22 and the regulation projection 61 move on the inclined wall 16 in the first direction L1. Then, as shown in FIG. 8, when the locking projection 22 is locked to the locking surface 13, the regulation projection 61 enters the locking hole 63 and is locked.

Accordingly, when the mounting cap 4 is rotated relative to the inner container 2 and the outer container 3 in the second direction L2 to remove the entire dispenser 5 including the mounting cap 4, the locking hole 63 and the restriction projection By the locking with 61, it is possible to restrict the movement of the locking projection 22 in the direction away from the locking surface 13 (second direction L2).
Thereby, only the mounting cap 4 can be smoothly removed from the inner container 2 and the outer container 3 without rotating the inner container 2 with respect to the outer container 3. As a result, for example, after the contents are discharged, the inner container 2 can be removed from the outer container 3, and unlike the case where the inner container 2 is removed together with the discharge device 5 including the mounting cap 4, The trouble of removing the inner container 2 becomes unnecessary. Therefore, the inner container 2 can be quickly removed, and the replacement work of the inner container 2 is further facilitated, so that convenience can be further improved.

  Furthermore, according to the double container 60 of the present embodiment, the engaging portion 62 of the inner container 2 can be engaged with the inside of the mouth portion 3c in the outer container 3, so that when the mounting cap 4 is removed, The sliding resistance of the engaging portion 62 with respect to the container 3 also makes it difficult for the inner container 2 to move in the second direction L2 with respect to the outer container 3. Therefore, this also facilitates removal of only the mounting cap 4 from the inner container 2 and the outer container 3.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in each of the above-described embodiments, the case where the mounting cap 4 is coupled (screwed) to the inner container 2 and the outer container 3 by a screwing method has been described as an example, but the present invention is not limited to the screwing method. . For example, the mounting cap 4 may be bayonet coupled to the inner container 2 and the outer container 3.

In this case, for example, a key groove (first locked portion) is formed on the outer peripheral surface of the mouth portion 2c of the inner container 2, and a key groove (second engaged member) is formed on the outer peripheral surface of the mouth portion 3c of the outer container 3. A first locking pin (first locking pin) that is inserted into the key groove formed in the mouth portion 2c of the inner container 2 on the inner peripheral surface of the first mounting cylinder 41 of the mounting cap 4. A second locking pin (second engagement) inserted into the key groove formed in the mouth 3c of the outer container 3 on the inner peripheral surface of the second mounting cylinder 42 of the mounting cap 4. A stop portion) may be formed.
Then, by rotating the mounting cap 4 in the first direction relative to the inner container 2 and the outer container 3, the first locking pin and the second locking pin are screwed into the key grooves and locked. Just do it. Therefore, even in this case, the same effect can be achieved only by changing the way of wearing.

  When the mounting cap 4 is coupled (screwed) to the inner container 2 and the outer container 3 by a screwing method, each thread portion may be a single thread as in the above embodiment, but may be a multiple thread. good.

  In the above embodiment, the neck ring 21 is formed integrally with the inner container 2. However, the neck ring 21 is formed separately from the inner container 2, and the neck ring 21 is combined and fixed to the inner container 2. May be. In this case, it is easy to form the locking protrusion 22 on the neck ring 21 with higher accuracy.

  Moreover, in each said embodiment, you may employ | adopt the inner container rich in flexibility which carries out volume reduction deformation | transformation as the content of the inner container 2 decreases. In this case, for example, as shown in the first embodiment, a gap between the outer container 3 and the inner container 2 and the outer container 3 are formed between the mouth 3c of the outer container 3 and the neck ring 21 of the inner container 2. Air can be exchanged with the outside. Accordingly, the inner container 2 can be appropriately volume-reduced and deformed as the contents are reduced.

  In each of the above embodiments, a gap is ensured between the inner container 2 and the outer container 3, but for example, the outer container 3 so that the bottom 2 a and the body 2 b of the inner container 2 are in contact with the inner surface of the outer container 3. The inner container 2 may be accommodated inside. Even in this case, the same effect can be achieved. However, by securing a gap between the inner container 2 and the outer container 3, the inner container 2 can be easily rotated together with the mounting cap 4 with less resistance.

Moreover, in each said embodiment, the inner container 2 is accommodated in the outer container 3, and the discharge device 5 with which the mounting cap 4 and the pump body 30 were combined after that was covered from the upper direction of the inner container 2, and the inner container 2 The mounting cap 4 is rotated relative to the outer container 3 in the first direction L1, but the present invention is not limited to this case.
For example, the inner container 2 and the mounting cap 4 are screwed in advance, and then the inner container 2 combined with the discharge device 5 is accommodated in the outer container 3 via the mounting cap 4. The mounting cap 4 and the outer container 3 may be screwed together by rotating. Even in this case, the double container can be assembled with the outer container 3 and the inner container 2 positioned in the circumferential direction.
However, from the viewpoint of easily replacing the inner container 2, it is preferable that the inner container 2 is accommodated in the outer container 3 and then the mounting cap 4 is rotated.

Further, in each of the above embodiments, the mounting cap may be configured to be rotated while feeling a so-called click just before the locking projection is locked to the locking surface.
For example, as shown in FIG. 10, at least a part of the second peripheral end surface 22b of the locking protrusion 22 is formed on a vertical surface parallel to the first peripheral end surface 22a. Moreover, the arm part 70 which protruded toward the 2nd direction L2 from the upper part of the horizontal part 12 of the outer container 3 is formed. Furthermore, the convex part 71 which protrudes toward the front-end | tip part of the arm part 70 and is located in the 2nd direction L2 side rather than the 2nd peripheral end surface 22b of the latching protrusion 22 is formed.

In this case, when the inner container 2 rotates together with the mounting cap 4 in the first direction L1, and the locking projection 22 moves on the inclined wall 16 in the first direction L1, the locking projection 22 Engages with the engaging surface 13 while overcoming the convex portion 71. Therefore, resistance is applied to the locking protrusion 22 when it gets over the convex portion 71.
As a result, immediately before the locking projection 22 is locked to the locking surface 13, the mounting cap 4 can be rotated while capturing a so-called click feeling as a tactile sensation. Therefore, the operability can be improved and the mounting cap 4 can be rotated while obtaining a feeling of closing.

In this case, as shown in FIG. 11, a locking surface 71 a on which the second peripheral end surface 22 b of the locking projection 22 is locked may be formed on the convex portion 71. When configured in this manner, the following effects can be further achieved.
When the mounting cap 4 is rotated relative to the inner container 2 and the outer container 3 in the second direction L2 to remove the entire dispenser 5 including the mounting cap 4, the second peripheral end surface of the locking projection 22 It is possible to restrict the movement of the locking projection 22 from the locking surface 13 in the second direction L2 by locking the locking surface 22b and the locking surface 71a.

Therefore, only the mounting cap 4 can be removed from the inner container 2 and the outer container 3 without rotating the inner container 2 with respect to the outer container 3. Thus, the same effect as 2nd Embodiment can be achieved.
In addition, as for the 2nd peripheral end surface 22b of the latching protrusion 22, and the arm part 70 which has the convex part 71 in which the latching surface 71a was formed, the latching protrusion 22 moves to the 2nd direction L2 from the latching surface 13. It functions as a regulating unit 75 that regulates this.

Furthermore, you may comprise so that rotation operation of the mounting cap 4 can be performed, feeling the click feeling mentioned above twice.
For example, as shown in FIGS. 12 and 13, a convex portion 80 on which the locking projection 22 can get over is formed on the inclined wall 16. At this time, the convex portion 80 is located on the second direction L2 side with respect to the locking protrusion 22 locked to the locking surface 13. Further, in this case, the locking projection 22 has a second peripheral end surface 22b which is a vertical surface parallel to the first peripheral end surface 22a. A recess 81 is formed on the lower surface of the locking projection 22 in contact with the inclined wall 16.

  In this case, when the inner container 2 rotates together with the mounting cap 4 in the first direction L1, and the locking protrusion 22 moves on the inclined wall 16 in the first direction L1, the locking protrusion 22 is locked to the locking surface 13 while getting over the convex portion 80. At this time, as shown in FIG. 13, the locking protrusion 22 temporarily climbs over the convex portion 80 and accommodates the convex portion 80 in the concave portion 81, and then climbs over the convex portion 80 again as shown in FIG. 12. .

  Therefore, since the locking projection 22 gets over the convex portion 80 twice and is locked with the locking surface 13, the locking projection 22 is given two resistances when getting over the convex portion 80. As a result, immediately before the locking protrusion 22 is locked to the locking surface 13, the mounting cap 4 can be rotated while capturing the so-called two-click feeling as a tactile sensation. Therefore, the operability can be further improved.

O ... container shaft 1, 60 ... double container 2 ... inner container 2c ... mouth part of inner container 3 ... outer container 3c ... mouth part of outer container 4 ... mounting cap 10 ... male screw part (second locked part)
DESCRIPTION OF SYMBOLS 13 ... Locking surface 15 ... Indentation part 16 ... Inclined wall 20 ... Male screw part (1st to-be-latched part)
22 ... Locking protrusion 45 ... Female thread portion (second locking portion)
46 ... Female thread portion (first locking portion)
64, 75 ... Regulatory part

Claims (3)

An inner container for storing the contents;
An outer container in which the inner container is accommodated;
The first locking portion that is locked by rotation to the first locked portion formed at the mouth portion of the inner container and the second locked portion that is formed at the mouth portion of the outer container are rotated and engaged. A top-like cylindrical shape having a second locking portion to be stopped and fixing the inner container to the outer container in accordance with a rotation operation from one side of the circumferential direction around the container axis to the other side. And a mounting cap of
The inner container and the outer container are attached to the attachment cap in accordance with a relative rotation operation of the attachment cap to the other side with respect to the inner container and the outer container,
In the opening edge of the mouth in the outer container,
An inclined wall that gradually becomes deeper along the container axial direction from the one side in the circumferential direction toward the other side, and is disposed on the other side in the circumferential direction of the inclined walls and faces the one side in the circumferential direction. And a recess having a locking surface,
In the inner container,
A locking projection is provided so as to be accommodated in the recess and move on the inclined wall and locked to the locking surface as the mounting cap rotates to the other side. A double container. The double container according to claim 1,
The double wall is characterized in that the inclined wall is formed so that the inclination of the inclination is equal to the ratio of the movement amount in the container axial direction to the relative movement amount of the outer container and the mounting cap in the circumferential direction. container. In the double container according to claim 1 or 2,
The inner container and the outer container are formed with a restricting portion for restricting the locking protrusion from moving from the locking surface to the one side in the circumferential direction.

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