Double container

Abstract

To create a double container in which an inner container can be replaced by a simpler attaching / detaching operation.SOLUTION: A double container is configured by having: an outer container 10; an inner container 20 filled with a content liquid and housed within the outer container 10; an ejector attached on the inner container 20 and for ejecting the content liquid; and a shoulder part 40 fitted rotatably in a circumferential direction with respect to a short-cylinder portion 13 vertically provided in an upper part of the outer container 10. If the shoulder part 40 is rotated in one way, a locked state is set to restrict the disengagement of the inner container 20 from inside the outer container 10 by a fact that a fit member 45 provided on the shoulder part 40 locks the ejector. If the shoulder part 40 is rotated in the other way, a non-locked state is set to cancel the locking of the ejector by the fit member 45 and allow the disengagement of the inner container 20 from inside the outer container 10.SELECTED DRAWING: Figure 8

Description

Technical Field

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[0001] The present invention relates to a double container.

Background Art

[0002] A double container is known in which an inner container filled with a content liquid such as lotion is removably housed inside an outer container, and the content liquid can be discharged by operating a pump attached to the upper part of the inner container (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above conventional double container, as described in the "Operation" column in the same document, complicated attachment and detachment operations are required to replace the inner container, so it is desired to be able to replace the inner container with a simpler operation. An object of the present invention is to create a double container that can replace an inner container with a simpler attachment and detachment operation in order to solve the above problems in the prior art.

Means for Solving the Problems

[0005] Among the means for solving the above problems, the first means of the present invention is a double container comprising an outer container, an inner container filled with a content liquid and housed inside the outer container, a discharger attached to the inner container for discharging the content liquid, and a shoulder part rotatably fitted in the circumferential direction to a short cylindrical part erected on the upper part of the outer container, The shoulder part is provided with a plurality of fitting members arranged in the circumferential direction, and the arrangement position of the fitting members switches according to the rotational position of the shoulder part. the shoulder part Depending on the rotational position, the Insertion The connecting member locks the dispenser, thereby restricting the inner container from detaching from the outer container, creating a locked state. And, previously The locking of the dispenser by the fitting member is released, allowing the inner container to detach from the outer container in an unlocked state. It can be switched between and It is characterized by being such.

[0006] In the first method, the state of the double container can be set to locked or unlocked simply by rotating the shoulder part in one or the other direction in the circumferential direction, making it easy to switch between restricting the detachment of the inner container from the outer container and removing the inner container from the outer container.

[0007] Furthermore, the second means of the present invention is that, in addition to the first means described above, the inner circumferential surface of the short cylindrical portion on the outer container side is provided with a locking region having a pressing portion that protrudes radially inward and has stopper walls erected at both ends in the circumferential direction, and a non-locking region arranged adjacent to the pressing portion in the circumferential direction. The shoulder part is provided with a stopper piece that is movable in the circumferential direction between stopper walls erected at both ends in the circumferential direction within the non-locking area, and a plurality of fitting members that are arranged to be movable in the circumferential direction within the locking area and the non-locking area. In the second method described above, by rotating the shoulder part in one direction in the circumferential direction and bringing the stopper piece into contact with one stopper wall, the multiple fitting members are positioned within the non-locking area, setting the device to a non-locking state that allows the attachment and detachment of the inner container equipped with a dispenser. Conversely, by rotating the shoulder part in the other direction in the circumferential direction and bringing the stopper piece into contact with the other stopper wall, the multiple fitting members are positioned within the locking area, setting the device to a locked state that locks the inner container equipped with a dispenser and restricts its removal from the outer container.

[0008] Furthermore, the third means of the present invention is, in addition to the second means described above, when a coordinate plane with two orthogonal imaginary lines in the container axis as the X axis and Y axis is divided by the X axis and Y axis into four regions: the first quadrant, the second quadrant, the third quadrant and the fourth quadrant, This method adds the following: a stopper piece is positioned on the underside of the shoulder part at two locations on the Y-axis or X-axis that are axially symmetric, and multiple fitting members are positioned on the underside of the shoulder part within the first and third quadrants or the second and fourth quadrants that are axially symmetric. In the third method described above, each quadrant is divided into quarter-turn (90-degree) intervals in the circumferential direction, so the shoulder part can be switched between locked and unlocked states by rotating it circumferentially by a quarter turn in either the forward or reverse direction.

[0009] Furthermore, a fourth means of the present invention adds to the second or third means described above that the fitting member has a hanging portion extending downward from the lower surface of the shoulder part and a convex portion projecting radially inward from the hanging portion, and is integrally formed in a state that is elastically deformable in the radial direction. In the fourth means described above, the fitting member elastically deforms radially, thereby ensuring that the attachment and detachment of the inner container equipped with the dispenser is reliably permitted in the unlocked state, and restricting the detachment of the inner container equipped with the dispenser in the locked state.

[0010] Furthermore, a fifth means of the present invention is the first or second means described above, wherein the discharger is a pump member having a screw cap attached to the mouth portion of the inner container, a pushable push head, a cylinder member that compresses the liquid contents when the push head is pressed, and a nozzle portion that sprays the compressed liquid contents outwards. In the fifth method described above, a double container can be formed in which the inner container equipped with a pump member can be attached to and detached from the outer container. [Effects of the Invention]

[0011] In this invention, the shoulder part is rotated clockwise. Towards again It is counterclockwise times The inner container can be easily attached to and detached from the outer container by a simple operation of rotating it in the opposite direction. Furthermore, by rotating the shoulder parts and setting them in a locked position, it is possible to restrict the inner container from detaching from the outer container.

Brief Description of the Drawings

[0012] [Figure 1] It is a semi - sectional view of a double - wall container showing an embodiment of the present invention. [Figure 2] (a) is a plan view of the outer container, (b) is a semi - sectional view showing the outer container from the front side, and (c) is a bottom view of the outer container. [Figure 3] (a) is a plan view of the inner container, and (b) is a partial sectional view showing the inner container from the front side. [Figure 4] (a) is a semi - sectional view of the shoulder part, and (b) is a bottom view of the shoulder part. [Figure 5] (a) is a plan view showing the relationship between the shoulder part and the outer container in the unlocked state, and (b) is a semi - sectional view taken in the direction of the arrow along line Va - Va in (a). [Figure 6] (a) is a plan view showing the relationship between the shoulder part and the outer container in the locked state, and (b) is a semi - sectional view taken in the direction of the arrow along line VIa - VIa in (a). [Figure 7] (a) is a plan view showing the relationships among the shoulder part, the outer container, and the screw cap in the unlocked state, and (b) is a semi - sectional view taken in the direction of the arrow along line VIIa - VIIa in (a). [Figure 8] (a) is a plan view showing the relationships among the shoulder part, the outer container, and the screw cap in the locked state, and (b) is a semi - sectional view taken in the direction of the arrow along line VIIIa - VIIIa in (a). [Figure 9] It is a semi - sectional view of a double - wall container showing the state when the inner container is inserted into (or removed from) the outer container.

Modes for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Figure 1 is a half cross-sectional view of a double container showing an embodiment of the present invention, Figure 2(a) is a plan view of the outer container, Figure 2(b) is a half cross-sectional view of the outer container from the front, Figure 2(c) is a bottom view of the outer container, Figure 3(a) is a plan view of the inner container, Figure 3(b) is a partial cross-sectional view of the inner container from the front, Figure 4(a) is a half cross-sectional view of the shoulder part, and Figure 4(b) is a bottom view of the shoulder part. In the following explanation, "radial direction" refers to the direction perpendicular to the container axis O, "circumferential direction" refers to the direction around the container axis O, and "height direction" refers to the direction along the container axis O.

[0014] As shown in Figure 1, the double-walled container 1 comprises an outer container 10, an inner container 20 housed within the outer container 10, a pump member (dispenser) 30 equipped with a screw cap 31 that can be screwed onto the inner container 20 for dispensing the liquid contents, a shoulder part 40 for attachment and detachment, and an overcap 50 covering the pump member 30 and the shoulder part 40. All of these are formed from synthetic resin material. The overcap 50 is not an essential component, and the container can be configured without it.

[0015] As shown in Figures 2(a), (b), and (c), the outer container 10 is formed by a cylindrical outer container body 11 with the container axis O as its central axis. A cylindrical short section 13 is erected on the upper part of the outer container body 11, with a convex portion 12 forming an undercut portion on its outer circumference. At two axially symmetrical positions on the lower end of the inner circumference of the short section 13, a pair of pressing portions 14 are formed, projecting radially in an arc shape, over a range of 1 / 4 of a turn (90 degrees) in the circumferential direction (hereinafter referred to as the "locked area L"). Stopper walls 15 having the same height dimension as the short section 13 are erected at both ends of the pair of pressing portions 14 in the circumferential direction. The space radially inside (towards the container axis O) of the pair of pressing portions 14 is an upper opening 17 through which the pump member 30 can pass, and a non-locked area UL continuous with the upper opening 17 is provided between one circumferentially adjacent pressing portion 14 and the other pressing portion 14 (between the locked areas L).

[0016] Furthermore, a pair of positioning protrusions 16 projecting radially inward are provided on the inner circumferential surface of the upper end of the outer container 10 at two axially symmetrical positions. The lower end of the outer container body 11 has an open end. and others A bottom opening 19 is provided.

[0017] Furthermore, it is preferable that the outer surface of the outer container body 11 is decorated with letters, figures, symbols, three-dimensional shapes or colors, or combinations thereof, in order to enhance its commercial value as a double-walled cosmetic container 1. Alternatively, the outer container body 11 may be molded from a transparent or translucent resin, so that the decorations consisting of letters, figures, symbols, three-dimensional shapes or colors, or combinations thereof, formed on the outer surface of the inner container 20 housed inside the outer container 10 can be seen through the outer container body 11.

[0018] As shown in Figures 3(a) and 3(b), the inner container 20 has a body portion 22 attached to the bottom portion 21, and an upper body portion 24 attached to the upper part of the body portion 22, with a constricted portion 23 in between. Furthermore, a mouth portion 26 is erected on the upper part of the upper body portion 24 via a shortened shoulder portion 25. Positioning recesses 27 that can engage with positioning protrusions 16 on the outer container 10 side are provided at both axially symmetrical positions of the upper body portion 24, and male threads 28 are formed on the outer circumferential surface of the mouth portion 26.

[0019] The pump member 30 includes a screw cap 31 that screws onto the outer surface of the mouth section 26, and a cylinder member 32 in which a piston member (not shown) is arranged inside. Inside, an introduction passage (not shown) is formed along the container axis O that allows the liquid contents filled in the inner container 20 to flow through.

[0020] The screw cap 31 is integrally constructed with an upper cylindrical portion 31A and a lower cylindrical portion 31B formed at its lower end, having a larger diameter than the upper cylindrical portion 31A. A push-down head 33 is attached to the upper cylindrical portion 31A. Furthermore, a female thread 31a is formed on the inner circumferential surface of the lower cylindrical portion 31B, which can be screwed onto the male thread 28 formed on the outer circumferential surface of the mouth cylindrical portion 26 on the inner container 20 side.

[0021] A nozzle portion 34 is provided on the side of the push head 33 to eject the liquid contents introduced into the introduction passage to the outside. The outer diameter of the push head 33 is smaller than the inner diameter of the upper cylindrical portion 31A of the screw cap 31. This allows the push head 33 to move up and down along the container axis O inside the upper cylindrical portion 31A of the screw cap 31.

[0022] The pump member 30 is configured such that a piston member (not shown), biased upward within the cylinder member 32, slides downward along with the downward movement of the push head 33, compressing the liquid inside the cylinder member 32 and allowing it to be ejected to the outside from the nozzle 34. Furthermore, by creating negative pressure inside the cylinder member 32 through the return movement of the push head 33 and the piston member, it is possible to introduce the liquid filled in the inner container 20 into the cylinder member 32. This pump member 30 is attached to the mouth portion 26 of the inner container 20 via a screw cap 31.

[0023] As shown in Figure 4(a), the shoulder part 40 is integrally connected to a short cylindrical outer cylinder portion 41 and an inner cylinder portion 43 with a shorter diameter via an inner flange portion 42 on its upper part. The inner circumferential surface of the outer cylinder portion 41 has a circumferential protrusion 41a that can engage with a protrusion 12 provided on the outer circumferential surface of the outer container 10. The outer circumferential surface of the inner cylinder portion 43 has an annular protrusion 43a that can engage with the overcap 50.

[0024] Here, as shown in Figure 4(b), for convenience, we define a coordinate plane with two orthogonal imaginary lines at the container axis O as the X and Y axes, and divide it into four regions: the first quadrant α1, the second quadrant α2, the third quadrant α3, and the fourth quadrant α4, for explanation purposes. In this embodiment, a pair of stopper pieces 44 are suspended from the lower surface of the inner circumference of the inner flange portion 42 at two positions on the Y-axis that are axially symmetric. Multiple (four in this embodiment) fitting members 45 are suspended from the stopper pieces 44 at predetermined intervals in the circumferential direction within the regions of the first quadrant α1 and the third quadrant α3, on the lower surface of the inner circumference of the inner flange portion 42. Fitting members 45 are not formed in the second quadrant α2 and the fourth quadrant α4. Alternatively, a configuration may be provided in which a pair of stopper pieces 44 are suspended at two positions on the X-axis, and multiple (four in this embodiment) fitting members 45 are arranged within the regions of the second quadrant α2 and the fourth quadrant α4.

[0025] The fitting member 45 has a hanging piece 45a extending downward from the lower surface of the inner flange portion 42 and a convex piece 45b projecting radially inward from the hanging piece 45a, and is integrally formed in a state that is elastically deformable in the radial direction. The fitting member 45 is formed to have the same height dimension as the outer cylinder portion 41 or slightly longer, but the pair of stopper pieces 44 are formed to be shorter than the height dimension of the outer cylinder portion 41.

[0026] The shoulder part 40 is fitted to the upper part of the outer container 10 in a manner that allows it to rotate in the circumferential direction by engaging its circumferential protrusion 41a with a protrusion 12 provided on the outer circumferential surface of the short cylindrical portion 13 of the outer container 10. Specifically, a clearance is formed in the height direction between the stopper piece 44 on the shoulder part 40 side and the retaining portion 14 on the outer container 10 side, and a small clearance is formed in the radial direction between the outer circumferential surface of the stopper piece 44 and the inner circumferential surface of the short cylindrical portion 13 (see Figure 6(a)). Furthermore, the fitting member 45 is located slightly radially inward from the retaining portion 14 (see Figure 6(b)), and the shoulder part 40 is set to rotate in the circumferential direction within a certain range on the upper part of the outer container 10.

[0027] Figure 5(a) is a plan view showing the relationship between the shoulder part and the outer container in the unlocked state, Figure 5(b) is a half cross-sectional view taken from the direction of the Va-Va arrow in Figure 5(a), Figure 6(a) is a plan view showing the relationship between the shoulder part and the outer container in the locked state, and Figure 6(b) is a half cross-sectional view taken from the direction of the VIa-VIa arrow in Figure 6(a). Note that in Figures 5(a) and 6(a), the members on the shoulder part 40 side are shown with dashed lines.

[0028] When the shoulder part 40, which is in a fitted state, is rotated circumferentially on the outer container 10, the stopper piece 44 can be brought into contact with the stopper wall 15 on the outer container 10 side. Here, the shoulder part 40 is rotated counterclockwise by 1 / 4 of a turn from the locked state, the stopper piece 44 contacts the stopper wall 15 from the counterclockwise direction, and the state in which the multiple fitting members 45 are stopped within the unlocked region UL is the unlocked state. Figure 5(a) (See reference). On the other hand, when the shoulder part 40 is rotated clockwise, the stopper piece 44 contacts the stopper wall 15 from the clockwise direction, and the multiple fitting members 45 are stopped within the locking region L, which is the locked state. Figure 6(a) reference).

[0029] As shown in Figures 5(a) and 5(b), in the unlocked state, the multiple fitting members 45 are positioned within the unlocked region UL and are therefore in a state where they can be elastically deformed radially outward. On the other hand, as shown in Figures 6(a) and 6(b), in the locked state, the multiple fitting members 45 are positioned within the lock region L near the inner edge of the retaining portion 14, and the protruding portion 45b faces the retaining portion 14, so the fitting members 45 are in a state where they cannot be elastically deformed radially outward. The protruding portion 45b of the fitting members 45 protrudes into the upper opening 17.

[0030] (Setting up the inner container) Next, the procedure for setting up the inner container 20 equipped with the pump component 30 and installing it inside the outer container 10 will be described. Figure 7(a) is a plan view showing the relationship between the shoulder part, outer container, and screw cap in the unlocked state, Figure 7(b) is a half cross-sectional view taken from the direction of the VIIa-VIIa arrow in Figure 7(a), Figure 8(a) is a plan view showing the relationship between the shoulder part, outer container, and screw cap in the locked state, Figure 8(b) is a half cross-sectional view taken from the direction of the VIIIa-VIIIa arrow in Figure 8(a), and Figure 9 is a half cross-sectional view of the double container showing the state when the inner container is attached to (or detached from) the outer container. Note that in Figures 7(a) and 8(a), the components on the shoulder part 40 side are shown with dashed lines.

[0031] As shown in Figure 9, the inner container 20, which has a pump member 30 at its top, is installed inside the outer container 10 by inserting it through the bottom opening 19 of the outer container 10 with the pump member 30 facing upwards. The installation is performed with the shoulder part 40 rotated counterclockwise by 1 / 4 turn to set the double container 1 in an unlocked state (see Figure 5(b)).

[0032] As shown in Figure 7(a), in the unlocked state, when the pump member 30 provided on the upper part of the inner container 20 passes through the upper opening 17 of the outer container 10, the lower cylindrical portion 31B of the screw cap 31 can come into contact with the convex portion 45b of the fitting member 45, thereby allowing multiple fitting members 45 within the unlocked region UL to be elastically deformed radially outward. Also, as shown in Figures 7(a) and 7(b), within the unlocked region UL, a small gap is provided between the outer circumferential surface of the lower cylindrical portion 31B of the screw cap 31 and the inner circumferential surface of the stopper piece 44. Therefore, the pump member 30 can pass through the upper opening 17.

[0033] Furthermore, when the positioning recess 27 on the inner container 20 and the positioning projection 16 on the outer container 10 are aligned in the circumferential direction during installation, the positioning projection 16 can be engaged with the positioning recess 27.

[0034] After engagement, when the shoulder part 40 is rotated clockwise to lock the double container 1, as shown in Figures 8(a) and 8(b), within the locking region L, the protruding piece 45b of the fitting member 45 is sandwiched between the outer surface of the lower cylindrical portion 31B of the screw cap 31 and the inner edge of the retaining portion 14. In this locked state, the multiple fitting members 45 are unable to elastically deform radially outward, and the protruding pieces 45b of the fitting members 45 protrude into the upper opening 17. Therefore, when attempting to pull the inner container 20 towards the bottom opening 19, the lower end of the lower cylindrical portion 31B of the screw cap 31 comes into contact with the protruding piece 45b of the fitting member 45. However, since the multiple fitting members 45 are unable to elastically deform radially outward, the multiple fitting members 45 lock the lower cylindrical portion 31B of the screw cap 31 that constitutes the pump member 30. Therefore, the pump member 30 cannot pass through the upper opening 17, and the inner container 20 can be reliably prevented from detaching from the bottom opening 19 of the outer container 10.

[0035] (Inner container reset procedure) Next, the procedure for the reset operation, which involves removing the inner container 20 equipped with the pump component 30 from inside the outer container 10, will be described. To replace the inner container 20 with a new one, a reset procedure is performed in which the inner container 20, which has used up its contents, is removed from the outer container 10 through the bottom opening 19. This procedure is the reverse of the setup procedure described above.

[0036] In other words, the shoulder part 40 is rotated counterclockwise by 1 / 4 of a turn, transitioning the double container 1 from a locked state to an unlocked state. As described above, in the unlocked state, multiple fitting members 45 are positioned within the unlocked region UL and are in a state where they can be elastically deformed radially outward (see Figure 7(a)). Therefore, when the pump member 30 passes through the upper opening 17, the protruding piece 45b of the fitting member 45 comes into contact with the outer circumferential surface of the lower cylindrical portion 31B of the screw cap 31, causing the fitting member 45 itself to elastically deform radially outward, releasing the locking to the pump member 30. As a result, the pump member 30 is allowed to pass through the upper opening 17, and the inner container 20 equipped with the pump member 30 can be removed from the outer container 10 through the bottom opening 19.

[0037] Therefore, in the unlocked state, by holding the outer container body 11 of the outer container 10 with one hand, inserting the other hand into the outer container 10 through the bottom opening 19, and holding the bottom 21 of the inner container 20 and pulling it downwards, the inner container 20 equipped with the pump member 30 can be easily removed to the outside through the bottom opening 19 (see Figure 9).

[0038] As described above, in this invention, the shoulder part 40 is rotated clockwise or counterclockwise in the circumferential direction. times By rotating it in the opposite direction, the inner container 20 can be easily attached to and detached from the outer container 10. To install a new inner container 20 into the outer container 10, simply perform the same procedure as for setting the inner container.

[0039] The configuration and effects of the present invention have been described above in accordance with the examples, but the embodiments of the present invention are not limited to the above examples.

[0040] For example, in the above embodiment, a configuration having a push-type pump member 30 as a dispenser for dispensing the liquid contents was described, but other configurations are also possible, such as a configuration in which the outer container 10 and inner container 20 are made of elastically deformable containers, and when the outer container body 11 is squeezed, the inner container 20 elastically deforms and the liquid contents are dispensed from the mouth tube portion 26 of the inner container 20, or a shakeable container configuration in which tablets or the like are contained in the inner container 20.

[0041] Furthermore, in the above embodiment, the stopper piece 44 and the plurality of fitting members 45 were described in terms of being arranged in two regions that form axial symmetry, the first quadrant α1 and the third quadrant α3, or the second quadrant α2 and the fourth quadrant α4. However, the present invention is not limited to the above embodiment, and it is also possible to arrange them in only one of the regions. However, considering the balance when the shoulder part 40 rotates, the configuration of the above embodiment is preferred.

[0042] Furthermore, although the above embodiment described a case where there are four fitting members 45, the number of fitting members 45 is not limited to four. [Industrial applicability]

[0043] This invention can expand the range of applications in the field of double-walled containers with replaceable inner containers to an even broader range. [Explanation of Symbols]

[0044] 1:Double container 10: Outer container 11: Outer container body 12: Convex part 13: Short tube part 14: Pressing part 15: Stopper Wall 16: Positioning protrusion 17: Upper opening 19: Bottom opening 20: Inner container 21: Bottom 22: Torso 23: Waist area 24: Upper torso 25:Shoulder 26: Mouth part 27: Positioning recess 28: Male screw 30: Pump components 31: Screw cap 31A: Upper cylinder part 31B: Lower cylinder part 31a: Female thread 32: Cylinder member 33: Press head 34: Nozzle section 40: Shoulder parts 41: Outer cylinder 41a: Peripheral convex part 42: Inner flange section 43: Inner cylinder 43a: Annular protrusion 44: Stopper piece 45: Fitting member 45a: Hanging piece 45b: Convex piece 50: Overcap O: Container axis L: Lock area UL: Unlocked area α1 :1st quadrant α2 :2nd quadrant α3 :3rd quadrant α4: 4th quadrant

Claims

1. A double container comprising an outer container (10), an inner container (20) filled with liquid contents and housed inside the outer container (10), a dispenser attached to the inner container (20) for dispensing the liquid contents, and a shoulder part (40) rotatably fitted in the circumferential direction to a short cylindrical portion (13) erected on the upper part of the outer container (10), The shoulder part (40) is provided with a plurality of fitting members (45) arranged in the circumferential direction, and the position of the fitting members (45) is switched according to the rotational position of the shoulder part (40). A double container characterized in that, depending on the rotational position of the shoulder part (40), the fitting member (45) can be switched between a locked state in which the dispensing device is locked, thereby restricting the removal of the inner container (20) from the outer container (10), and an unlocked state in which the locking of the dispensing device by the fitting member (45) is released, allowing the removal of the inner container (20) from the outer container (10).

2. The inner circumferential surface of the short cylindrical portion (13) on the outer container (10) side is provided with a locking region (L) where a retaining portion (14) is positioned, which protrudes radially inward and has stopper walls (15) erected at both ends in the circumferential direction, and a non-locking region (UL) is positioned adjacent to the retaining portion (14) in the circumferential direction. The double container according to claim 1, wherein the shoulder part (40) is provided with a stopper piece (44) that is circumferentially movable between stopper walls (15) erected at both ends in the circumferential direction within the non-locking area (UL), and a plurality of fitting members (45) that are circumferentially movable within the locking area (L) and the non-locking area (UL).

3. When a coordinate plane with two orthogonal imaginary lines on the container axis (O) as the X and Y axes is divided along the X and Y axes into four regions: the first quadrant (α1), the second quadrant (α2), the third quadrant (α3), and the fourth quadrant (α4), The double container according to claim 2, wherein the stopper piece (44) is positioned at two locations on the Y-axis or X-axis that are axially symmetric on the lower surface of the shoulder part (40), and the plurality of fitting members (45) are positioned on the lower surface of the shoulder part (40) within the first quadrant (α1) and the third quadrant (α3) or within the second quadrant (α2) and the fourth quadrant (α4) that are axially symmetric.

4. The double container according to claim 2 or 3, wherein the fitting member (45) has a hanging portion (45a) extending downward from the lower surface of the shoulder part (40) and a convex portion (45b) projecting radially inward from the hanging portion (45a), and is integrally formed in a manner that allows for elastic deformation in the radial direction.

5. A double-walled container according to any one of claims 1 to 3, wherein the dispenser is a pump member (30) having a screw cap (31) attached to the mouth tube portion (26) of the inner container (20), a pushable push head (33), a cylinder member (32) that compresses the liquid contents when the push head (33) is pressed, and a nozzle portion (34) that sprays the compressed liquid contents outwards.

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