Insulated container

Abstract

To improve the heat retention and cooling capabilities of insulated containers. [Solution] In the insulated container, the substantially cylindrical first wall portion 120 of the first container 100 has a vacuum insulation space 123 between the first inner plate 121 and the first outer plate 122, and the substantially cylindrical second wall portion of the second container 200 has a vacuum insulation space 223 between the second inner plate 221 and the second inner plate. The first outer plate 122 is provided with a first threaded portion S1, and the second inner plate 221 is provided with a first second threaded portion S21 and a second second threaded portion S22. During the first rotation of the first wall portion 120 within the second wall portion, the first threaded portion S11 is fastened to the first second threaded portion S21 and the second second threaded portion S22 in that order. Meanwhile, with the first threaded portion S11 fastened to the second second threaded portion S22, during the second rotation of the first wall portion 120 within the second wall portion, the first threaded portion S11 is fastened to the first second threaded portion S21.

Description

Technical Field

[0001] The present invention relates to a heat-insulating container.

Background Art

[0002] Patent Document 1 below describes a conventional storage container for storing beverage containers such as PET bottles. This storage container includes a solid metal bottomed cylindrical container body and a solid covered cylindrical cap. The container body has a bottom and a cylindrical first peripheral wall portion extending upward from the peripheral edge of the bottom. A male screw portion is provided at the upper end of the outer peripheral surface of the first peripheral wall portion. The cap has a ceiling portion having an opening and a cylindrical second peripheral wall portion extending downward from the peripheral edge of the ceiling portion. The inner diameter of the second peripheral wall portion is larger than the inner diameter of the first peripheral wall portion. A female screw portion is formed on the inner peripheral surface of the second peripheral wall portion.

[0003] With the beverage container placed inside the container body, the first wall portion of the container body is inserted into the second wall portion of the cap, and while rotating the cap circumferentially with respect to the container body, the male screw portion of the container body is engaged with the female screw portion of the cap. As the male screw portion advances from bottom to top with respect to the female screw portion, the cap moves from top to bottom with respect to the container body, and the lid portion of the beverage container protrudes upward from the opening of the cap. In this way, when accommodating the beverage container in the inner space of the conventional storage container, the height of the inner space of the conventional storage container is adjusted to match the linear distance in the height direction from the bottom to the shoulder of the beverage container.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Conventional storage containers do not have a vacuum insulation structure in their container body or cap. Therefore, conventional storage containers have poor heat retention and cold retention capabilities.

[0006] This invention provides an insulated container that can improve heat retention and cooling performance. [Means for solving the problem]

[0007] An insulated container according to one aspect of the present invention comprises a substantially bottomed cylindrical first container and a substantially topped cylindrical second container. The first container has a bottom and a substantially cylindrical first wall portion extending from the periphery of the bottom in one direction in a first direction. The first direction is the height direction of the first container. The first wall portion has a substantially cylindrical first inner plate, a substantially cylindrical first outer plate disposed with a gap between it and the first inner plate radially outward from the first wall portion, and a first vacuum insulation space between the first inner plate and the first outer plate. The second container has a top and a substantially cylindrical second wall portion extending from the periphery of the top portion in the other direction in the first direction. The second wall portion has a substantially cylindrical second inner plate, a substantially cylindrical second outer plate disposed with a gap between it and the second inner plate radially outward from the second inner plate, and a second vacuum insulation space between the second inner plate and the second outer plate.

[0008] When the first wall portion is housed within the second wall portion so as to be removable from the other side in the first direction, one of the first outer plate and the second inner plate is provided with at least one first threaded portion having a series of continuous threads or grooves, and the other is provided with a series of second threaded portions, each having a series of continuous threads or grooves. The series of second threaded portions are spaced apart in the first direction.

[0009] When the second wall portion is housed within the first wall portion so as to be removable from one side in the first direction, one of the first inner plate and the second outer plate is provided with at least one first threaded portion having a series of continuous threads or grooves, and the other is provided with a series of second threaded portions, each having a series of continuous threads or grooves. The series of second threaded portions are spaced apart in the first direction.

[0010] At least one first threaded portion includes a first first threaded portion, and a plurality of second threaded portions include a first second threaded portion and a second second threaded portion.

[0011] The first threaded portion is fastened to the first second threaded portion and the second second threaded portion in this order by the first wall portion being rotated relative to the second wall portion in one circumferential direction within the second wall portion, or by the second wall portion being rotated relative to the first wall portion in one circumferential direction within the first wall portion, thereby moving the second wall portion to the other in the first direction relative to the first wall portion. Meanwhile, with the first threaded portion fastened to the second second threaded portion, the first threaded portion is fastened to the first second threaded portion by the first wall portion being rotated relative to the second wall portion in the other circumferential direction within the second wall portion, or by the second wall portion being rotated relative to the first wall portion in the other circumferential direction within the first wall portion, thereby moving the second wall portion to one in the first direction relative to the first wall portion. [Effects of the Invention]

[0012] In the case of an insulated container according to one aspect of the present invention, its heat retention and cooling capacity can be improved. The reason is as follows: The first wall of the first container has a first vacuum insulation space, and the second wall of the second container has a second vacuum insulation space. By housing the first wall within the second wall from the other side in the first direction, or housing the second wall within the first wall from one side in the first direction, the first vacuum insulation space of the first wall and the second vacuum insulation space of the second wall can be arranged to overlap in the radial direction. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view of an insulated container according to Example 1 of the present invention. [Figure 2] This is a front view of the insulated container of Example 1. [Figure 3] This is a plan view of the insulated container of Example 1. [Figure 4] This is a bottom view of the insulated container of Example 1. [Figure 5] This is a right side view of the insulated container of Example 1. [Figure 6] Figure 5 shows an enlarged cross-sectional view of the insulated container of Example 1, specifically section 6-6, illustrating the container with a beverage container, indicated by the dashed line, inside. [Figure 7] This is an enlarged front view of the disassembled portion of the insulated container of Example 1. [Figure 8] This is an enlarged cross-sectional view of section 6-6 in Figure 5 of the insulated container of Example 1. [Figure 9] This is an enlarged cross-sectional view corresponding to Figure 6 of the heat-insulating container according to Embodiment 2 of the present invention, showing the container with a beverage container indicated by a dashed line inside. [Modes for carrying out the invention]

[0014] The following describes several embodiments of the present invention, including Embodiments 1 and 2 and their design modifications. It should be noted that the components of the embodiments and design modifications described below can be combined with each other, as long as they do not contradict each other. Furthermore, the materials, shapes, dimensions, numbers, and arrangements of the components in each embodiment and design modification described below are merely illustrative examples, and can be arbitrarily modified as long as similar functions can be achieved. [Examples]

[0015] The following describes several embodiments of the present invention, including Embodiment 1 and its design modifications, with reference to Figures 1 to 8. Figures 1 to 8 show the thermal insulation container T1 of Embodiment 1. Figures 1 to 2 and Figures 6 to 8 show the Z-Z' direction (first direction), which includes the Z direction (the other of the first direction) and the Z' direction (one of the first directions).

[0016] The heat-insulating container T1 is a container for accommodating a beverage container P (see Fig. 6). As the beverage container P, for example, a beverage container made of synthetic resin or bioplastic (e.g., a PET bottle, etc.), a beverage can made of aluminum or steel, etc., or a beverage container made of paper, food fiber (e.g., bamboo, sugarcane, etc.), glass or pottery, etc.

[0017] The heat-insulating container T1 includes a substantially bottomed cylindrical first container 100. At least a part (a part or all of the Z-direction side portion) of the beverage container P can be accommodated in the first container 100 from the Z-direction side. The first container 100 has a bottom portion 110 and a substantially cylindrical first wall portion 120 extending in the Z-direction from the peripheral edge of the bottom portion 110. The Z-Z' direction is the height direction of the first container 100. Hereinafter, for convenience of explanation, the radial direction of the first wall portion 120 is simply referred to as the "radial direction" and the circumferential direction of the first wall portion 120 is simply referred to as the "circumferential direction".

[0018] The bottom portion 110 has the following configuration of (1-1) or (1-2).

[0019] (1-1) The bottom portion 110 has a substantially disc-shaped first upper plate 111 as viewed from the Z' direction, a substantially disc-shaped first lower plate 112 as viewed from the Z' direction, and a first vacuum heat-insulating space 113 (see Figs. 1 to 8). The first upper plate 111 and the first lower plate 112 are made of a metal plate such as stainless steel or titanium. The first lower plate 112 is arranged with a gap on the Z'-direction side with respect to the first upper plate 111. The first upper plate 111 and the first lower plate 112 have a ring-shaped outer edge.

[0020] (1-2) The bottom portion 110 is made of a metal plate such as stainless steel or titanium that is substantially disc-shaped as viewed from the Z' direction. The bottom portion 110 is solid (not shown).

[0021] The first wall portion 120 has a substantially cylindrical first inner plate 121, a substantially cylindrical first outer plate 122, and a first vacuum insulation space 123. The first inner plate 121 and the first outer plate 122 are made of metal plates such as stainless steel or titanium. The first outer plate 122 is positioned radially outward from the first inner plate 121 with a substantially cylindrical gap between them. The inner diameter of the first outer plate 122 is larger than the outer diameter of the first inner plate 121. The first inner plate 121 and the first outer plate 122 have a ring-shaped upper end on the Z-direction side and a ring-shaped lower end on the Z'-direction side.

[0022] When the bottom portion 110 has the configuration described in (1-1) above (see Figures 1 to 8), the upper end of the first inner plate 121 of the first wall portion 120 is connected to the upper end of the first outer plate 122, the lower end of the first inner plate 121 of the first wall portion 120 is connected to the outer edge of the first upper plate 111 of the bottom portion 110, and the lower end of the first outer plate 122 of the first wall portion 120 is connected to the outer edge of the first lower plate 112 of the bottom portion 110. With this structure, the gap between the first inner plate 121 and the first outer plate 122 forms the first vacuum insulation space 123, and the gap between the first upper plate 111 and the first lower plate 112 of the bottom portion 110 is continuous with the first vacuum insulation space 123 and forms the first vacuum insulation space 113.

[0023] When the bottom portion 110 has the configuration described in (1-2) above (not shown), the upper end of the first inner plate 121 of the first wall portion 120 is connected to the upper end of the first outer plate 122, and the lower end of the first inner plate 121 of the first wall portion 120 is connected to the lower end of the first outer plate 122 of the first wall portion 120 to the periphery of the bottom portion 110. With this structure, the gap between the first inner plate 121 and the first outer plate 122 forms the first vacuum insulation space 123.

[0024] The insulated container T1 further comprises a substantially cylindrical second container 200. The second container 200 is detachably attached to the first container 100. With at least a portion (the portion or all of the portion on the Z-direction side) of the beverage container P contained within the first container 100, the second container 200, by being attached to the first container 100, partially covers the beverage container P contained within the first container 100 from the Z-direction side. The second container 200 has a ceiling portion 210 and a substantially cylindrical second wall portion 220 extending in the Z' direction from the periphery of the ceiling portion 210.

[0025] The ceiling section 210 has the following configurations: (2-1), (2-2), (2-3), or (2-4).

[0026] (2-1) The ceiling portion 210 has a second lower plate 211 which is substantially annular when viewed from the Z direction, a second upper plate 212 which is substantially annular when viewed from the Z direction, and a second vacuum insulation space 213 (see Figures 1 to 8). The second lower plate 211 and the second upper plate 212 are made of metal plates such as stainless steel or titanium. The second upper plate 212 is positioned with a gap in the Z direction relative to the second lower plate 211. The second lower plate 211 and the second upper plate 212 have a ring-shaped inner edge and a ring-shaped outer edge. The inner edge of the second lower plate 211 and the inner edge of the second upper plate 212 are connected. An opening 230 is provided on the radially inner side of the inner edge of the second lower plate 211 and the inner edge of the second upper plate 212.

[0027] (2-2) The ceiling portion 210 has a second lower plate 211 which is roughly disc-shaped when viewed from the Z direction, a second upper plate 212 which is roughly disc-shaped when viewed from the Z direction, and a second vacuum insulation space 213 (not shown). The second lower plate 211 and the second upper plate 212 are made of metal plates such as stainless steel or titanium. The second upper plate 212 is positioned with a gap between it and the second lower plate 211 on the Z' side. The second lower plate 211 and the second upper plate 212 have ring-shaped outer edges. Note that there is no opening 230 in the ceiling portion 210.

[0028] (2-3) The ceiling portion 210 is made of a metal plate such as stainless steel or titanium that is roughly annular when viewed from the Z direction (not shown). An opening 230 is provided in the ceiling portion 210.

[0029] (2-4) The ceiling portion 210 is made of a metal plate such as stainless steel or titanium that is roughly disc-shaped when viewed from the Z direction (not shown). The ceiling portion 210 is solid and does not have an opening 230.

[0030] The inner diameter of the second wall portion 220 is slightly larger than the outer diameter of the first wall portion 120. The first wall portion 120 is housed within the second wall portion 220 so as to be insertable and removable from the Z' direction side. In other words, the second wall portion 220 is positioned around the first wall portion 120. The Z-Z' dimension of the second wall portion 220 may be approximately the same as, larger than, or smaller than the Z-Z' dimension of the first wall portion 120. With the first wall portion 120 housed within the second wall portion 220, the second wall portion 220 is positioned radially outward from at least a portion (the portion or all of the portion on the Z direction side) of the first wall portion 120.

[0031] The second wall portion 220 has a substantially cylindrical second inner plate 221, a substantially cylindrical second outer plate 222, and a second vacuum insulation space 223. The second inner plate 221 and the second outer plate 222 are made of metal plates such as stainless steel or titanium. The second outer plate 222 is positioned radially outward from the second inner plate 221 with a substantially cylindrical gap between them. The inner diameter of the second outer plate 222 is larger than the outer diameter of the second inner plate 221. The inner diameter of the second inner plate 221 is slightly larger than the outer diameter of the first outer plate 122 of the first wall portion 120. The second inner plate 221 and the second outer plate 222 have a ring-shaped upper end on the Z-direction side and a ring-shaped lower end on the Z'-direction side.

[0032] When the ceiling portion 210 has the configuration of (2-1) or (2-2) above, the lower end of the second inner plate 221 of the second wall portion 220 is connected to the lower end of the second outer plate 222, the upper end of the second inner plate 221 of the second wall portion 220 is connected to the outer edge of the second lower plate 211 of the ceiling portion 210, and the upper end of the second outer plate 222 of the second wall portion 220 is connected to the outer edge of the second upper plate 212 of the ceiling portion 210. With this structure, the gap between the second inner plate 221 and the second outer plate 222 forms a second vacuum insulation space 223, and the gap between the second lower plate 211 and the second upper plate 212 of the ceiling portion 210 is continuous with the second vacuum insulation space 223 and forms a second vacuum insulation space 213.

[0033] When the ceiling portion 210 has the configuration of (2-3) or (2-4) above, the lower end of the second inner plate 221 of the second wall portion 220 is connected to the lower end of the second outer plate 222, and the upper end of the second inner plate 221 of the second wall portion 220 is connected to the periphery of the ceiling portion 210. With this structure, the gap between the second inner plate 221 and the second outer plate 222 forms the second vacuum insulation space 223.

[0034] One of the first outer plate 122 and the second inner plate 221 is provided with at least one first threaded portion S1, and the other plate is provided with a plurality of second threaded portions S2. At least one first threaded portion S1 has a continuous set of threads or grooves. Each of the plurality of second threaded portions S2 has a continuous set of threads or grooves.

[0035] At least one first threaded portion S1 further has the following configuration (3-1) or (3-2).

[0036] (3-1) When there is at least one first threaded portion S1 (not shown), at least one first threaded portion S1 includes a first first threaded portion S11. The threads or grooves of the first first threaded portion S11 over multiple turns are formed by bending a first part of one of the plates. The threads or grooves of the first first threaded portion S11 over multiple turns may be formed over one of the plates over two to three turns, but it is possible to have more than that.

[0037] (3-2) When there are multiple first threaded portions S1 (see Figures 6 to 8), the multiple first threaded portions S1 are arranged in the Z-Z' direction at approximately the same interval as the multiple second threaded portions S2. The dimensions of each of the multiple first threaded portions S1 in the Z-Z' direction (the straight-line distance in the Z-Z' direction from the Z-side end to the Z'-side end of the continuous multiple turns of threads or grooves of the first threaded portion S1) are the same. The multiple first threaded portions S1 include the first first threaded portion S11 and the second first threaded portion S12.

[0038] The threads or grooves of the second first threaded portion S12 are formed by bending the second portion of one of the plates. The threads or grooves of the second first threaded portion S12 are preferably formed to go around one of the plates two to three times (see Figures 6 to 8), but may be more than that (not shown).

[0039] (3-2-1) When the first threaded portion S11 and the second threaded portion S12 are provided on the first outer plate 122 (see Figures 6 to 8), the first threaded portion S11 is positioned furthest towards the Z direction among the plurality of first threaded portions S1, and the second threaded portion S12 is positioned adjacent to the first threaded portion S11 in the Z' direction with a gap between them.

[0040] (3-2-2) When the first threaded portion S11 and the second threaded portion S12 are provided on the second inner plate 221 (not shown), the first threaded portion S11 is positioned furthest towards the Z' direction among the plurality of first threaded portions S1, and the second threaded portion S12 is positioned adjacent to the first threaded portion S11 in the Z direction with a gap between them.

[0041] Furthermore, it is possible to have three or more first threaded portions S1.

[0042] Multiple second threaded portions S2 are arranged at intervals in the Z-Z' direction. The spacing between each of the multiple second threaded portions S2 may be approximately the same as the Z-Z' dimension of the first threaded portion S11 (see Figures 6-8), smaller (not shown), or larger (not shown). The Z-Z' dimension of each of the multiple second threaded portions S2 (the straight-line distance in the Z-Z' direction from the Z-direction end to the Z'-direction end of the continuous multiple turns of threads or grooves of each of the multiple second threaded portions S2) is approximately the same as the Z-Z' dimension of the first threaded portion S11. The multiple second threaded portions S2 further have the following configurations (4-1) or (4-2).

[0043] (4-1) The multiple second threaded portions S2 include a first second threaded portion S21 and a second second threaded portion S22. Multiple threads or grooves of the first second threaded portion S21 are formed by bending a first portion of the other plate. The multiple threads or grooves of the first second threaded portion S21 are preferably formed to wrap around the other plate 2 to 3 times (see Figures 6 to 8), but may be more than that (not shown). Multiple threads or grooves of the second second threaded portion S22 are formed by bending a second portion of the other plate. The multiple threads or grooves of the second second threaded portion S22 are preferably formed to wrap around the other plate 2 to 3 times (see Figures 6 to 8), but may be more than that (not shown).

[0044] (4-1-1) When the first second thread portion S21 and the second second thread portion S22 are provided on the second inner plate 221 (see Figures 6 to 8), the first second thread portion S21 is positioned furthest towards the Z' direction among the multiple second thread portions S2, and the second second thread portion S22 is positioned adjacent to the first second thread portion S21 in the Z direction with a gap between them.

[0045] (4-1-2) When the first second threaded portion S21 and the second second threaded portion S22 are provided on the first outer plate 122 (not shown), the first second threaded portion S21 is positioned furthest towards the Z direction among the plurality of second threaded portions S2, and the second second threaded portion S22 is positioned adjacent to the first second threaded portion S21 in the Z' direction with a gap between them.

[0046] (4-2) The multiple second threaded portions S2 further include a third second threaded portion S23 and a fourth second threaded portion S24 (see Figures 6 to 8). The third second threaded portion S23 and the fourth second threaded portion S24 have multiple continuous threads or grooves. The multiple threads or grooves of the third second threaded portion S23 are formed by bending the third portion of the other plate. The multiple threads or grooves of the third second threaded portion S23 are preferably formed to wrap around the other plate 2 to 3 times (see Figures 6 to 8), but may be more than that (not shown). The multiple threads or grooves of the fourth second threaded portion S24 are formed by bending the fourth portion of the other plate. The multiple threads or grooves of the fourth second threaded portion S24 are preferably formed to wrap around the other plate 2 to 3 times (see Figures 6 to 8), but may be more than that (not shown).

[0047] (4-2-1) When the first second thread portion S21, the second second thread portion S22, and the third second thread portion S23 are provided on the second inner plate 221 (see Figures 6 to 8), the first second thread portion S21 and the second second thread portion S22 have the configuration described in (4-1-1) above, the third second thread portion S23 is positioned adjacent to the second second thread portion S22 on the Z-direction side with a gap between them, and the fourth second thread portion S24 is positioned adjacent to the third second thread portion S23 on the Z-direction side with a gap between them.

[0048] (4-2-2) When the first second thread portion S21, the second second thread portion S22, and the third second thread portion S23 are provided on the first outer plate 122 (not shown), the first second thread portion S21 and the second second thread portion S22 have the configuration as described in (4-1-2) above, the third second thread portion S23 is positioned adjacent to the second second thread portion S22 on the Z' side with a gap between them, and the fourth second thread portion S24 is positioned adjacent to the third second thread portion S23 on the Z' side with a gap between them.

[0049] The fourth second threaded portion S24 can be omitted. Alternatively, the third second threaded portion S23 and the fourth second threaded portion S24 can be omitted. Alternatively, the number of second threaded portions S2 can be five or more.

[0050] As the first wall portion 120 of the first container 100 is inserted into the second wall portion 220 of the second container 200 from the Z' direction side, the first wall portion 120 is rotated relative to the second wall portion 220 in one circumferential direction within the second wall portion 220, thereby fastening the first threaded portion S11 to the first second threaded portion S21 and the second second threaded portion S22 in that order, causing the second wall portion 220 to move in the Z' direction relative to the first wall portion 120. On the other hand, with the first threaded portion S11 fastened to the second second threaded portion S22, the first wall portion 120 is rotated relative to the second wall portion 220 in the other circumferential direction within the second wall portion 220, thereby fastening the first threaded portion S11 to the first second threaded portion S21, causing the second wall portion 220 to move in the Z direction relative to the first wall portion 120. The following provides a detailed explanation using examples of non-restrictive clauses.

[0051] For the sake of explanation, the insertion of the first wall portion 120 of the first container 100 into the second wall portion 220 of the second container 200 from the Z' direction side will be referred to as "initial insertion," the rotation of the first wall portion 120 relative to the second wall portion 220 in one circumferential direction within the second wall portion 220 will be referred to as "first rotation," and the rotation of the first wall portion 120 relative to the second wall portion 220 in the other circumferential direction within the second wall portion 220 will be referred to as "second rotation."

[0052] If at least one first threaded portion S1 has the configuration described in (3-1) and multiple second threaded portions S2 have the configuration described in (4-2-1) or (4-2-2), the second container 200 is attached to and detached from the first container 100 as described in (a-1), (a-2), or (a-3) below.

[0053] (a-1) When the spacing between each of the multiple second threaded portions S2 in the Z-Z' direction is approximately the same as the dimension of the first first threaded portion S11 in the Z-Z' direction (see Figures 6 to 8), the first first threaded portion S11 is fastened to the first second threaded portion S21 (from the start of fastening to the completion of fastening) by performing the first rotation while initially inserting it (a-1-1). Approximately simultaneously with the release of this fastening, the first first threaded portion S11 starts fastening to the second second threaded portion S22 and completes the fastening (a-1-2). Approximately simultaneously with the release of this fastening, the first first threaded portion S11 starts fastening to the third second threaded portion S23 and completes the fastening (a-1-3). Approximately simultaneously with the release of this fastening, the first first threaded portion S11 starts fastening to the fourth second threaded portion S24 and completes the fastening (a-1-4). In this way, the second wall portion 220 moves in the Z' direction relative to the first wall portion 120, and the second container 200 is attached to the first container 100.

[0054] On the other hand, when the first threaded portion S11 is fastened to the fourth threaded portion S24 (a-1-4), a second rotation causes the first threaded portion S11 to release from the fourth threaded portion S24, and almost simultaneously, the first threaded portion S11 to start fastening to the third threaded portion S23, and this fastening is completed (a-1-3). Almost simultaneously, the first threaded portion S11 to start fastening to the second threaded portion S22, and this fastening is completed (a-1-2). Almost simultaneously, the first threaded portion S11 to start fastening to the first threaded portion S21, and this fastening is completed (a-1-1). In this way, the second wall portion 220 moves in the Z direction relative to the first wall portion 120. With the first threaded portion S11 fastened to the first second threaded portion S21 (a-1-1), a second rotation releases the fastening of the first threaded portion S11 to the first second threaded portion S21, and the first wall portion 120 detaches from the second wall portion 220. In this way, the second container 200 is removed from the first container 100.

[0055] Furthermore, the relative positional relationship of the second wall portion 220 with respect to the first wall portion 120 in the Z-Z' direction can be adjusted as follows. From state (a-1-1) above, the state can be transitioned to state (a-1-2) above by the first rotation. From state (a-1-2) above, the state can be transitioned to state (a-1-3) above by the first rotation, and from state (a-1-2) above, the state can be transitioned to state (a-1-1) above by the second rotation. From state (a-1-3) above, the state can be transitioned to state (a-1-4) above by the first rotation, and from state (a-1-3) above, the state can be transitioned to state (a-1-2) above by the second rotation. Furthermore, from state (a-1-1) above, the second container 200 can be removed from the first container 100 as described above by the second rotation.

[0056] (a-2) If the spacing between each of the multiple second threaded portions S2 in the Z-Z' direction is smaller than the dimension of the first threaded portion S11 in the Z-Z' direction (not shown), the first threaded portion S11 is fastened to the first second threaded portion S21 by initial insertion and first rotation (from the start of fastening to the completion of fastening) (a-2-1), and before the fastening is released, the fastening of the first threaded portion S11 to the second second threaded portion S22 is started and completed (a-2-2), and between the start and completion of the fastening of the first threaded portion S11 to the second second threaded portion S22, the fastening of the first threaded portion S11 to the first second threaded portion S21 is released, and the first threaded portion S11 to the second second threaded portion S22 Before the fastening is released, the first threaded portion S11 is fastened to the third threaded portion S23, and the fastening is completed (a-2-3). Between the start and completion of the fastening of the first threaded portion S11 to the third threaded portion S23, the first threaded portion S11 is released from its fastening to the second threaded portion S22. Before the first threaded portion S11 is released from its fastening to the third threaded portion S23, the first threaded portion S11 is fastened to the fourth threaded portion S24, and the fastening is completed (a-2-4). Between the start and completion of the fastening of the first threaded portion S11 to the fourth threaded portion S24, the first threaded portion S11 is released from its fastening to the third threaded portion S23. In this way, the second wall portion 220 moves in the Z' direction relative to the first wall portion 120, and the second container 200 is attached to the first container 100.

[0057] On the other hand, with the first threaded portion S11 fastened to the fourth second threaded portion S24 (a-2-4), by a second rotation, before the fastening of the first threaded portion S11 to the fourth second threaded portion S24 is released, the fastening of the first threaded portion S11 to the third second threaded portion S23 is started and completed (a-2-3), and between the start and completion of the fastening of the first threaded portion S11 to the third second threaded portion S23, the fastening of the first threaded portion S11 to the fourth second threaded portion S24 is released, and before the fastening of the first threaded portion S11 to the third second threaded portion S23 is released, the second second threaded portion S11 Fastening to the threaded portion S22 is initiated and completed (a-2-2), and between the start and completion of fastening of the first threaded portion S11 to the second threaded portion S22, the fastening of the first threaded portion S11 to the third threaded portion S23 is released, and before the fastening of the first threaded portion S11 to the second threaded portion S22 is released, fastening of the first threaded portion S11 to the first threaded portion S21 is initiated and completed (a-2-1), and between the start and completion of fastening of the first threaded portion S11 to the first threaded portion S21, the fastening of the first threaded portion S11 to the second threaded portion S22 is released. In this way, the second wall portion 220 moves in the Z direction relative to the first wall portion 120. With the first threaded portion S11 fastened to the first second threaded portion S21 (a-2-1), a second rotation releases the fastening of the first threaded portion S11 to the first second threaded portion S21, and the first wall portion 120 detaches from the second wall portion 220. In this way, the second container 200 is removed from the first container 100.

[0058] Furthermore, the relative positional relationship of the second wall portion 220 with respect to the first wall portion 120 in the Z-Z' direction can be adjusted as follows. From state (a-2-1) above, the first rotation can transition to state (a-2-2) above as described above. From state (a-2-2) above, the first rotation can transition to state (a-2-3) above as described above, and from state (a-2-2) above, the second rotation can transition to state (a-2-1) above as described above. From state (a-2-3) above, the first rotation can transition to state (a-2-4) above as described above, and from state (a-2-3) above, the second rotation can transition to state (a-2-2) above as described above. Furthermore, from state (a-2-1) above, the second container 200 can be removed from the first container 100 by the second rotation as described above.

[0059] (a-3) If the spacing between each of the multiple second threaded portions S2 in the Z-Z' direction is greater than the dimension of the first threaded portion S11 in the Z-Z' direction (not shown), the first threaded portion S11 is fastened to the first second threaded portion S21 (from the start of fastening to the completion of fastening) (a-3-1) by initial insertion and first rotation, and then the fastening is released. After the release, the first threaded portion S11 is inserted between the first second threaded portion S21 and the second second threaded portion S22, but by moving the first wall portion 120 relative to the second wall portion 220 in the Z direction and first rotation, the fastening of the first threaded portion S11 to the second second threaded portion S22 is started and completed (a-3-2), and then the fastening is released. After the initial fastening is released, the first threaded portion S11 is inserted between the second threaded portion S22 and the third threaded portion S23. By rotating the first wall portion 120 while moving it relative to the second wall portion 220 in the Z direction, the initial fastening of the first threaded portion S11 to the third threaded portion S23 is initiated and completed (a-3-3), and then the fastening is released. After the initial fastening is released, the first threaded portion S11 is inserted between the third threaded portion S23 and the fourth threaded portion S24. By rotating the first wall portion 120 while moving it relative to the second wall portion 220 in the Z direction, the initial fastening of the first threaded portion S11 to the fourth threaded portion S24 is initiated and completed (a-3-4). In this way, the second wall portion 220 moves in the Z' direction relative to the first wall portion 120, and the second container 200 is attached to the first container 100.

[0060] Meanwhile, with the first threaded portion S11 fastened to the fourth threaded portion S24 (a-3-4), a second rotation releases the fastening of the first threaded portion S11 to the fourth threaded portion S24. After the release, the first threaded portion S11 is inserted between the fourth threaded portion S24 and the third threaded portion S23. However, by moving the first wall portion 120 relative to the second wall portion 220 in the Z' direction and performing a second rotation, the fastening of the first threaded portion S11 to the third threaded portion S23 begins and is completed (a-3-3), and then the fastening is released. After the initial release, the first threaded portion S11 is inserted between the third threaded portion S23 and the second threaded portion S22. By rotating the first wall portion 120 a second time while moving it relative to the second wall portion 220 in the Z' direction, the initial fastening of the first threaded portion S11 to the second threaded portion S22 is initiated and completed (a-3-2), and then released. After the initial release, the first threaded portion S11 is inserted between the second threaded portion S22 and the first threaded portion S21. By rotating the first wall portion 120 a second time while moving it relative to the second wall portion 220 in the Z' direction, the initial fastening of the first threaded portion S11 to the first threaded portion S21 is initiated and completed (a-3-1). In this way, the second wall portion 220 moves relative to the first wall portion 120 in the Z direction. With the first threaded portion S11 fastened to the first second threaded portion S21 (a-3-1), the first wall portion 120 is rotated a second time, and the fastening of the first threaded portion S11 to the first second threaded portion S21 is released, causing the first wall portion 120 to detach from the second wall portion 220. In this way, the second container 200 is removed from the first container 100.

[0061] Furthermore, the relative positional relationship of the second wall portion 220 with respect to the first wall portion 120 in the Z-Z' direction can be adjusted as follows. From state (a-2-1) above, the first rotation can transition to state (a-2-2) above as described above. From state (a-2-2) above, the first rotation can transition to state (a-2-3) above as described above, and from state (a-2-2) above, the second rotation can transition to state (a-2-1) above as described above. From state (a-2-3) above, the first rotation can transition to state (a-2-4) above as described above, and from state (a-2-3) above, the second rotation can transition to state (a-2-2) above as described above. Furthermore, from state (a-2-1) above, the second container 200 can be removed from the first container 100 by the second rotation as described above.

[0062] If at least one first threaded portion S1 has the configuration described in (3-2-1) or (3-2-2) above, and a plurality of second threaded portions S2 have the configuration described in (4-2-1) or (4-2-2) above, the second container 200 is attached to and detached from the first container 100 as described in (b-1), (b-2), or (b-3) below.

[0063] (b-1) When the spacing between each of the multiple second threaded portions S2 in the Z-Z' direction is approximately the same as the dimension of the first threaded portion S11 in the Z-Z' direction (see Figures 6 to 8), the first threaded portion S11 is fastened to the first second threaded portion S21 (from the start of fastening to the completion of fastening) by initial insertion and first rotation (b-1-1), and approximately simultaneously with the release of this fastening, the fastening of the first threaded portion S11 to the second second threaded portion S22 begins. The fastening of the second first threaded portion S12 to the first second threaded portion S21 begins, and as the fastening of the first first threaded portion S11 to the second second threaded portion S22 is completed, the fastening of the second first threaded portion S12 to the first second threaded portion S21 is also completed (b-1-2), and as the fastening of the first first threaded portion S11 to the second second threaded portion S22 is released, and approximately simultaneously as the fastening of the second first threaded portion S12 to the first second threaded portion S21 is released, As fastening of the first threaded portion S11 of 1 to the third second threaded portion S23 begins, fastening of the second first threaded portion S12 to the second second threaded portion S22 begins, and as fastening of the first first threaded portion S11 to the third second threaded portion S23 is completed, fastening of the second first threaded portion S12 to the second second threaded portion S22 is completed (b-1-3), and as fastening of the first first threaded portion S11 to the third second threaded portion S23 is released, fastening of the second first threaded portion Almost simultaneously with the release of the fastening of the threaded portion S12 to the second second threaded portion S22, the fastening of the first first threaded portion S11 to the fourth second threaded portion S24 begins, and the fastening of the second first threaded portion S12 to the third second threaded portion S23 begins. As the fastening of the first first threaded portion S11 to the fourth second threaded portion S24 is completed, the fastening of the second first threaded portion S12 to the third second threaded portion S23 is also completed (b-1-4) (see Figure 6). In this way, the second wall portion 220 moves relative to the first wall portion 120 in the Z' direction, and the second container 200 is attached to the first container 100.

[0064] Meanwhile, with the second first threaded portion S12 fastened to the third second threaded portion S23 and the first first threaded portion S11 fastened to the fourth second threaded portion S24 (b-1-4), a second rotation releases the fastening of the second first threaded portion S12 to the third second threaded portion S23 and the fastening of the first first threaded portion S11 to the fourth second threaded portion S24, almost simultaneously, the fastening of the second first threaded portion S12 to the second second threaded portion S22 begins, and the fastening of the first first threaded portion S11 to the third second threaded portion S23 begins, and the fastening of the second first threaded portion S12 to the second second threaded portion S22 is completed, as is the fastening of the first first threaded portion S11 to the third second threaded portion S23 (b-1-3), and the second first threaded portion S12 to the second second threaded portion S22 As the fastening to the first threaded portion S11 is released, and almost simultaneously the fastening of the first threaded portion S11 to the third threaded portion S23 is released, the fastening of the second threaded portion S12 to the first threaded portion S21 is started, and the fastening of the first threaded portion S11 to the second threaded portion S22 is started, and as the fastening of the second threaded portion S12 to the first threaded portion S21 is completed, the fastening of the first threaded portion S11 to the second threaded portion S22 is completed (b-1-2), and as the fastening of the second threaded portion S12 to the first threaded portion S21 is released, and almost simultaneously the fastening of the first threaded portion S11 to the second threaded portion S22 is released, the fastening of the first threaded portion S11 to the first threaded portion S21 is started, and that fastening is completed (b-1-1). In this way, the second wall portion 220 moves in the Z direction relative to the first wall portion 120. With the first threaded portion S11 fastened to the first second threaded portion S21 (b-1-1), a second rotation releases the fastening of the first threaded portion S11 to the first second threaded portion S21, and the first wall portion 120 detaches from the second wall portion 220. In this way, the second container 200 is removed from the first container 100.

[0065] Furthermore, the relative positional relationship of the second wall portion 220 with respect to the first wall portion 120 in the Z-Z' direction can be adjusted as follows. From state (b-1-1) above, the first rotation can transition to state (b-1-2) above as described above. From state (b-1-2) above, the first rotation can transition to state (b-1-3) above as described above, and from state (b-1-2) above, the second rotation can transition to state (b-1-1) above as described above. From state (b-1-3) above, the first rotation can transition to state (b-1-4) above as described above, and from state (b-1-3) above, the second rotation can transition to state (b-1-2) above as described above. Furthermore, from state (b-1-1) above, the second container 200 can be removed from the first container 100 by the second rotation as described above.

[0066] (b-2) If the spacing between each of the multiple second threaded portions S2 in the Z-Z' direction is smaller than the dimension of the first threaded portion S11 in the Z-Z' direction (not shown), the first threaded portion S11 is fastened to the first second threaded portion S21 (from the start of fastening to the completion of fastening) by initial insertion and first rotation (b-2-1), and before the fastening is released, the fastening of the first threaded portion S11 to the second second threaded portion S22 begins and the fastening of the second first threaded portion S12 to the first second threaded portion S21 begins and the second threaded portion S11 When fastening to the second threaded portion S22 is completed, the fastening of the second first threaded portion S12 to the first second threaded portion S21 is also completed (b-2-2), and during the period from the start to the completion of fastening of the first first threaded portion S11 to the second second threaded portion S22 and during the period from the start to the completion of fastening of the second first threaded portion S12 to the first second threaded portion S21, the fastening of the first first threaded portion S11 to the first second threaded portion S21 is released, and before the fastening of the first first threaded portion S11 to the second second threaded portion S22 and the first second threaded portion S12 Before the fastening to the threaded portion S21 is released, the fastening of the first threaded portion S11 to the third threaded portion S23 begins, and the fastening of the second threaded portion S12 to the second threaded portion S22 begins, and when the fastening of the first threaded portion S11 to the third threaded portion S23 is completed, the fastening of the second threaded portion S12 to the second threaded portion S22 is completed (b-2-3), and during the period from the start to the completion of the fastening of the first threaded portion S11 to the third threaded portion S23 and the second threaded portion S22 of the second threaded portion S12 Between the start and completion of fastening, the fastening of the first threaded portion S11 to the second threaded portion S22 is released, and the fastening of the second threaded portion S12 to the first threaded portion S21 is released, and before the fastening of the first threaded portion S11 to the third threaded portion S23 and before the fastening of the second threaded portion S12 to the second threaded portion S22 is released, fastening of the first threaded portion S11 to the fourth threaded portion S24 and fastening of the second threaded portion S12 to the third threaded portion S23 are started.When the fastening of the first threaded portion S11 to the fourth threaded portion S24 is completed, the fastening of the second threaded portion S12 to the third threaded portion S23 is also completed (b-2-4). During the period from the start to the completion of the fastening of the first threaded portion S11 to the fourth threaded portion S24 and during the period from the start to the completion of the fastening of the second threaded portion S12 to the third threaded portion S23, the fastening of the first threaded portion S11 to the third threaded portion S23 and the fastening of the second threaded portion S12 to the second threaded portion S22 are released. In this way, the second wall portion 220 moves in the Z' direction relative to the first wall portion 120, and the second container 200 is attached to the first container 100.

[0067] On the other hand, with the second first threaded portion S12 fastened to the third second threaded portion S23 and the first first threaded portion S11 fastened to the fourth second threaded portion S24 (b-2-4), by performing a second rotation, before the fastening of the second first threaded portion S12 to the third second threaded portion S23 and before the fastening of the first first threaded portion S11 to the fourth second threaded portion S24 is released, the fastening of the second first threaded portion S12 to the second second threaded portion S22 and the fastening of the first first threaded portion S11 to the third second threaded portion S23 are initiated, and the second first threaded portion S When fastening of 12 to the second second thread portion S22 is completed, the fastening of the first first thread portion S11 to the third second thread portion S23 is also completed (b-2-3), and during the period from the start to the completion of fastening of the second first thread portion S12 to the second second thread portion S22 and during the period from the start to the completion of fastening of the first first thread portion S11 to the third second thread portion S23, the fastening of the second first thread portion S12 to the third second thread portion S23 and the fastening of the first first thread portion S11 to the fourth second thread portion S24 are released, and the second first thread portion S12 to the second second thread portion Before the fastening to S22 is released and before the fastening of the first threaded portion S11 to the third second threaded portion S23 is released, the fastening of the second first threaded portion S12 to the first second threaded portion S21 and the fastening of the first first threaded portion S11 to the second second threaded portion S22 is started, and the fastening of the second first threaded portion S12 to the first second threaded portion S21 is completed and the fastening of the first first threaded portion S11 to the second second threaded portion S22 is completed (b-2-2), and the fastening of the second first threaded portion S12 to the first second threaded portion S21 is started and completed During the period between the start and completion of fastening of the first threaded portion S11 to the second second threaded portion S22, the fastening of the second first threaded portion S12 to the second second threaded portion S22 is released and the fastening of the first first threaded portion S11 to the third second threaded portion S23 is released, and before the fastening of the second first threaded portion S12 to the first second threaded portion S21 is released and before the fastening of the first first threaded portion S11 to the second second threaded portion S22 is released, the fastening of the first first threaded portion S11 to the first second threaded portion S21 is started and completed (b-2-1),During the process from the start to the completion of fastening the first threaded portion S11 to the first second threaded portion S21, the fastening of the second first threaded portion S12 to the first second threaded portion S21 and the fastening of the first first threaded portion S11 to the second second threaded portion S22 are released. In this way, the second wall portion 220 moves in the Z direction relative to the first wall portion 120. With the first first threaded portion S11 fastened to the first second threaded portion S21 (b-2-1), a second rotation releases the fastening of the first first threaded portion S11 to the first second threaded portion S21, and the first wall portion 120 detaches from the second wall portion 220. In this way, the second container 200 is removed from the first container 100.

[0068] Furthermore, the relative positional relationship of the second wall portion 220 with respect to the first wall portion 120 in the Z-Z' direction can be adjusted as follows. From state (b-2-1) above, the first rotation can transition to state (b-2-2) above as described above. From state (b-2-2) above, the first rotation can transition to state (b-2-3) above as described above, and from state (b-2-2) above, the second rotation can transition to state (b-2-1) above as described above. From state (b-2-3) above, the first rotation can transition to state (b-2-4) above as described above, and from state (b-2-3) above, the second rotation can transition to state (b-2-2) above as described above. Furthermore, from state (b-2-1) above, the second container 200 can be removed from the first container 100 by the second rotation as described above.

[0069] (b-3) If the spacing between each of the multiple second threaded portions S2 in the Z-Z' direction is greater than the dimension of the first threaded portion S11 in the Z-Z' direction (not shown), the first threaded portion S11 is fastened to the first second threaded portion S21 (from the start of fastening to the completion of fastening) by performing a first rotation while initially inserting it (b-3-1). After the fastening is released, the first threaded portion S11 is inserted between the first second threaded portion S21 and the second second threaded portion S22, and the first second threaded portion S21 is inserted between the first threaded portion S11 and the second first threaded portion S12, but by performing a first rotation while moving the first wall portion 120 relative to the second wall portion 220 in the Z direction, the fastening of the first threaded portion S11 to the second second threaded portion S22 is started and The fastening of the second first threaded portion S12 to the first second threaded portion S21 begins, and when the fastening of the first first threaded portion S11 to the second second threaded portion S22 is completed, the fastening of the second first threaded portion S12 to the first second threaded portion S21 is also completed (b-3-2), the fastening of the first first threaded portion S11 to the second second threaded portion S22 is released, and the fastening of the second first threaded portion S12 to the first second threaded portion S21 is also released. After the fastening is released, the first threaded portion S11 is inserted between the second threaded portion S22 and the third threaded portion S23, the second threaded portion S12 is inserted between the first threaded portion S21 and the second threaded portion S22, and the second threaded portion S22 is inserted between the first threaded portion S11 and the second threaded portion S12, but by rotating the first wall portion 120 in the Z direction relative to the second wall portion 220, the third threaded portion of the first threaded portion S11 As fastening to the second threaded portion S23 begins, fastening of the second first threaded portion S12 to the second second threaded portion S22 begins, and as fastening of the first first threaded portion S11 to the third second threaded portion S23 is completed, fastening of the second first threaded portion S12 to the second second threaded portion S22 is completed (b-3-3), the fastening of the first first threaded portion S11 to the third second threaded portion S23 is released, and the fastening of the second first threaded portion S12 to the second second threaded portion S22 is released.After the fastening is released, the first threaded portion S11 is inserted between the third threaded portion S23 and the fourth threaded portion S24, and the second threaded portion S12 is inserted between the second threaded portion S22 and the third threaded portion S23. However, by rotating the first wall portion 120 while moving it relative to the second wall portion 220 in the Z direction, fastening of the first threaded portion S11 to the fourth threaded portion S24 is initiated, and fastening of the second threaded portion S12 to the third threaded portion S23 is initiated, and fastening of the first threaded portion S11 to the fourth threaded portion S24 is completed, as is fastening of the second threaded portion S12 to the third threaded portion S23 (b-3-4). In this way, the second wall portion 220 moves relative to the first wall portion 120 in the Z' direction, and the second container 200 is attached to the first container 100.

[0070] On the other hand, with the second first threaded portion S12 fastened to the third second threaded portion S23 and the first first threaded portion S11 fastened to the fourth second threaded portion S24 (b-3-4), a second rotation releases the fastening of the second first threaded portion S12 to the third second threaded portion S23 and the fastening of the first first threaded portion S11 to the fourth second threaded portion S24. After the fastening is released, the second first threaded portion S12 is inserted between the third second threaded portion S23 and the second second threaded portion S22, the first first threaded portion S11 is inserted between the fourth second threaded portion S24 and the third second threaded portion S23, and the third second threaded portion S23 is inserted between the first first threaded portion S11 and the second first threaded portion S12, but by rotating the first wall portion 120 a second time while moving it relative to the second wall portion 220 in the Z' direction, the second first threaded portion of the second first threaded portion S12 As fastening to the second threaded portion S22 begins, fastening of the first threaded portion S11 to the third second threaded portion S23 begins, and as fastening of the second first threaded portion S12 to the second second threaded portion S22 is completed, fastening of the first first threaded portion S11 to the third second threaded portion S23 is completed (b-3-3), and as fastening of the second first threaded portion S12 to the second second threaded portion S22 is released, fastening of the first first threaded portion S11 to the third second threaded portion S23 is released. After the fastening is released, the second first threaded portion S12 is inserted between the second second threaded portion S22 and the first second threaded portion S21, the first first threaded portion S11 is inserted between the third second threaded portion S23 and the second second threaded portion S22, and the second second threaded portion S22 is inserted between the first first threaded portion S11 and the second first threaded portion S12, but by rotating the first wall portion 120 a second time while moving it relative to the second wall portion 220 in the Z' direction, the first first threaded portion of the second first threaded portion S12 As fastening to the 2 threaded portion S21 begins, fastening of the 1st threaded portion S11 to the 2nd threaded portion S22 begins, and as fastening of the 2nd threaded portion S12 to the 1st threaded portion S21 is completed, fastening of the 1st threaded portion S11 to the 2nd threaded portion S22 is completed (b-3-2), and as fastening of the 2nd threaded portion S12 to the 1st threaded portion S21 is released, fastening of the 1st threaded portion S11 to the 2nd threaded portion S22 is released.After the fastening is released, the first threaded portion S11 is inserted between the second threaded portion S22 and the first threaded portion S21, and the first threaded portion S21 is inserted between the first threaded portion S11 and the second threaded portion S12. However, by rotating the first wall portion 120 a second time while moving it relative to the second wall portion 220 in the Z' direction, the fastening of the first threaded portion S11 to the first threaded portion S21 is initiated and completed (b-3-1). In this way, the second wall portion 220 moves relative to the first wall portion 120 in the Z direction. With the first threaded portion S11 fastened to the first threaded portion S21, the fastening of the first threaded portion S11 to the first threaded portion S21 is released by rotating it a second time, and the first wall portion 120 comes out of the second wall portion 220. In this way, the second container 200 is removed from the first container 100.

[0071] Furthermore, the relative positional relationship of the second wall portion 220 with respect to the first wall portion 120 in the Z-Z' direction can be adjusted as follows. From state (b-3-1) above, the first rotation can transition to state (b-3-2) above as described above. From state (b-3-2) above, the first rotation can transition to state (b-3-3) above as described above, and from state (b-3-2) above, the second rotation can transition to state (b-3-1) above as described above. From state (b-3-3) above, the first rotation can transition to state (b-3-4) above as described above, and from state (b-3-3) above, the second rotation can transition to state (b-3-2) above as described above. Furthermore, from state (b-3-1) above, the second container 200 can be removed from the first container 100 by the second rotation as described above.

[0072] If the fourth second threaded portion S24 is omitted, in (a-1) above, the transition from state (a-1-4) to state (a-1-3) and the reverse transition may be omitted; in (a-2) above, the transition from state (a-2-4) to state (a-2-3) and the reverse transition may be omitted; in (a-3) above, the transition from state (a-3-4) to state (a-3-3) and the reverse transition may be omitted; in (b-1) above, the transition from state (b-1-4) to state (b-1-3) and the reverse transition may be omitted; in (b-2) above, the transition from state (b-2-4) to state (b-2-3) and the reverse transition may be omitted; and in (b-3) above, the transition from state (b-3-4) to state (b-3-3) and the reverse transition may be omitted.

[0073] If the third second thread portion S23 and the fourth second thread portion S24 are omitted, in (a-1) above, the transition from state (a-1-3) to state (a-1-2) and the reverse transition, and the transition from state (a-1-4) to state (a-1-3) and the reverse transition may be omitted, in (a-2) above, the transition from state (a-2-3) to state (a-2-2) and the reverse transition, and the transition from state (a-2-4) to state (a-2-3) and the reverse transition may be omitted, in (a-3) above, the transition from state (a-3-3) to state (a-3-2) and the reverse transition, and the transition from state (a-3-4) to state (a-3-3) and It is often acceptable to omit the transitions between the above states. For example, in (b-1) above, it is often acceptable to omit the transition from state (b-1-3) to state (b-1-2) and its reverse, as well as the transition from state (b-1-4) to state (b-1-3) and its reverse. In (b-2) above, it is often acceptable to omit the transition from state (b-2-3) to state (b-2-2) and its reverse, as well as the transition from state (b-2-4) to state (b-2-3) and its reverse. In (b-3) above, it is often acceptable to omit the transition from state (b-3-3) to state (b-3-2) and its reverse, as well as the transition from state (b-3-4) to state (b-3-3) and its reverse.

[0074] The insulated container T1 may further include a substantially U-shaped handle 300. The handle 300 may be provided on the second container 200. The handle 300 is optional.

[0075] The method for housing the beverage container P in the insulated container T1 described above will be explained in detail below. Prepare the first container 100 and the second container 200 of the insulated container T1. Prepare the beverage container P. With the first container 100 and the second container 200 removed, at least a part of the beverage container P (the part or all of the part on the Z-direction side) is placed inside the first container 100 from the Z-direction side. Then, attach the second container 200 to the first container 100 as described in (a-1) to (a-3) and (b-1) to (b-3) above. If the part of the beverage container P on the Z-direction side protrudes from the first container 100 in the Z-direction, adjust the attachment position of the second container 200 to the first container 100 by moving the second wall portion 220 of the second container 200 in the Z-Z' direction relative to the first wall portion 120 of the first container 100 as described above and in (b-1) to (b-3) above. If the second container 200 is provided with an opening 230, the upper end of the Z-side portion of the beverage container P protrudes in the Z-direction from the opening 230 by adjusting the mounting position of the second container 200 relative to the first container 100. If the second container 200 is not provided with an opening 230, the mounting position of the second container 200 relative to the first container 100 is adjusted so that the entire beverage container P is housed within the second container 200 and the first container 100. In this way, the beverage container P is housed in the insulated container T1.

[0076] Before placing at least a portion of the beverage container P into the first container 100 from the Z-direction side, one or more substantially disc-shaped raised bottom plates and / or one or more cooling agents may be placed into the first container 100 from the Z-direction side, and then at least a portion of the beverage container P may be placed into the first container 100 from the Z-direction side. In this case, the beverage container P is placed on one or more raised bottom plates and / or one or more cooling agents within the first container 100.

[0077] The insulated container T1 described above exhibits the following technical features and effects (1) to (5).

[0078] (1) Technical features and effects The heat retention and cooling capacity of the insulated container T1 is improved. The reason is as follows: The first wall portion 120 of the first container 100 has a first vacuum insulation space 123, and the second wall portion 220 of the second container 200 has a second vacuum insulation space 223. By housing the first wall portion 120 within the second wall portion 220 from the Z' direction side, the second wall portion 220 is positioned radially outward relative to the first wall portion 120. As a result, the second vacuum insulation space 223 of the second wall portion 220 and the first vacuum insulation space 123 of the first wall portion 120 are arranged to overlap radially, thus improving the heat retention and cooling capacity of the insulated container T1.

[0079] (2) Technical features and effects The inventors of the present invention have adopted a configuration in which the first wall portion 120 of the first container 100 has a first vacuum insulation space 123 between a first inner plate 121 and a first outer plate 122 made of metal plates such as stainless steel or titanium, and a configuration in which the second wall portion 220 of the second container 200 has a second vacuum insulation space 223 between a second inner plate 221 and a second outer plate 222 made of metal plates such as stainless steel or titanium. Since the first outer plate 122 and the second inner plate 221 are made of metal plates such as stainless steel or titanium, it has been found that it is difficult to form continuous screw threads or screw grooves of two to three turns or more while stretching the metal plates such as stainless steel or titanium when creating each of the first outer plate 122 and the second inner plate 221. If only one continuous thread or groove is formed on the first outer plate 122 and the second inner plate 221, the relative Z-Z' movement distance of the second wall portion 220 of the second container 200 with respect to the first wall portion 120 of the first container 100 will be small.

[0080] However, one of the plates, the first outer plate 122 and the second inner plate 221, is provided with at least one first threaded portion S1, and the other plate is provided with a plurality of second threaded portions S2 spaced apart in the Z-Z' direction. Therefore, when creating the other plate, a metal plate such as stainless steel or titanium can be stretched while creating the continuous threads or grooves of each of the plurality of second threaded portions S2 spaced apart in the Z-Z' direction. Thus, the continuous threads or grooves of each of the plurality of second threaded portions S2 can be easily created on the other plate with the plurality of second threaded portions S2. Even if one plate is provided with a plurality of first threaded portions S1 spaced apart in the Z-Z' direction, one plate with a plurality of first threaded portions S1 can be easily created in the same way as the other plate. Furthermore, since the multiple second threaded portions S2 are arranged at intervals in the Z-Z' direction, the relative movement distance of the second wall portion 220 of the second container 200 with respect to the first wall portion 120 of the first container 100 can be increased by sequentially fastening and unfastening of the multiple second threaded portions S2 by at least one first threaded portion S1 in the Z-Z' direction.

[0081] (3) Technical features and effects If the spacing between multiple second threaded portions S2 in the Z-Z' direction is approximately the same as the spacing between the first first threaded portion S11 in the Z-Z' direction, then by performing the first rotation while initially inserting, the first first threaded portion S11 is fastened to the first second threaded portion S21 (from the start of fastening to the completion of fastening), and almost simultaneously with the release of that fastening, fastening of the first first threaded portion S11 to the second second threaded portion S22 begins. Therefore, even if multiple second threaded portions S2 are spaced apart in the Z-Z' direction, when moving the second wall portion 220 of the second container 200 relative to the first wall portion 120 of the first container 100 in the Z' direction, the first first threaded portion S11 can be fastened sequentially and continuously to the first second threaded portion S21 and the second second threaded portion S22. On the other hand, when the first threaded portion S11 is fastened to the second threaded portion S22, a second rotation releases the fastening of the first threaded portion S11 to the second threaded portion S22, and almost simultaneously, the fastening of the first threaded portion S11 to the first threaded portion S21 begins. Therefore, even if multiple second threaded portions S2 are spaced apart in the Z-Z' direction, when moving the second wall portion 220 of the second container 200 relative to the first wall portion 120 of the first container 100 in the Z direction, the first threaded portion S11 can be fastened sequentially and continuously to the second threaded portion S22 and the first threaded portion S21.

[0082] (4) Technical features and effects If the spacing between multiple second threaded portions S2 in the Z-Z' direction is smaller than the spacing between the first threaded portion S11 in the Z-Z' direction, the first threaded portion S11 is fastened to the first second threaded portion S21 (from the start of fastening to the completion of fastening) by performing the first rotation while initially inserting it, and before that fastening is released, the fastening of the first threaded portion S11 to the second second threaded portion S22 is started. Therefore, even if multiple second threaded portions S2 are spaced apart in the Z-Z' direction, when moving the second wall portion 220 of the second container 200 relative to the first wall portion 120 of the first container 100 in the Z' direction, the first threaded portion S11 can be fastened sequentially and continuously to the first second threaded portion S21 and the second second threaded portion S22. On the other hand, when the first threaded portion S11 is fastened to the second threaded portion S22, a second rotation causes the first threaded portion S11 to begin fastening to the first threaded portion S21 before the fastening of the first threaded portion S11 to the second threaded portion S22 is released. Therefore, even if multiple second threaded portions S2 are spaced apart in the Z-Z' direction, when moving the second wall portion 220 of the second container 200 relative to the first wall portion 120 of the first container 100 in the Z direction, the first threaded portion S11 can be fastened sequentially and continuously to the second threaded portion S22 and the first threaded portion S21.

[0083] (5) Technical features and effects If the Z-Z' spacing between multiple second threaded portions S2 is greater than the Z-Z' spacing between the first first threaded portion S11, the first first threaded portion S11 is fastened to the first second threaded portion S21 (from the start to the completion of fastening) by performing the first rotation while initially inserting it, and after that fastening is released, the fastening of the first first threaded portion S11 to the second second threaded portion S22 is started. Therefore, even if multiple second threaded portions S2 are spaced apart in the Z-Z' direction, when moving the second wall portion 220 of the second container 200 relative to the first wall portion 120 of the first container 100 in the Z' direction, the first first threaded portion S11 can be fastened sequentially and intermittently to the first second threaded portion S21 and the second second threaded portion S22. On the other hand, when the first threaded portion S11 is fastened to the second threaded portion S22, a second rotation releases the fastening of the first threaded portion S11 to the second threaded portion S22, after which fastening of the first threaded portion S11 to the first threaded portion S21 begins. Therefore, even if multiple second threaded portions S2 are spaced apart in the Z-Z' direction, when moving the second wall portion 220 of the second container 200 relative to the first wall portion 120 of the first container 100 in the Z direction, the first threaded portion S11 can be fastened sequentially and intermittently to the second threaded portion S22 and the first threaded portion S21. [Examples]

[0084] The following describes several embodiments of the present invention, including Embodiment 2 and its design modifications, with reference to Figure 9. Figure 9 shows the thermal insulation container T2 of Embodiment 2. Figure 9 shows the Z-Z' direction (first direction).

[0085] The insulated container T2 has the same configuration as the insulated container T1, except that the second wall portion 220 of the second container 200 is removably housed within the first wall portion 120 of the first container 100. Below, only the differences will be explained in detail, and explanations that overlap with those for the insulated container T1 will be omitted.

[0086] The inner diameter of the first wall portion 120 of the first container 100 is slightly larger than the outer diameter of the second wall portion 220 of the second container 200. The inner diameter of the first inner plate 121 of the first wall portion 120 is slightly larger than the outer diameter of the second outer plate 222 of the second wall portion 220.

[0087] At least one first threaded portion S1 of the insulated container T2 has the same configuration as at least one first threaded portion S1 of the insulated container T1, except that it is provided on one of the plates, the first inner plate 121 and the second outer plate 222. The plurality of second threaded portions S2 have the same configuration as the plurality of second threaded portions S2 of the insulated container T1, except that they are provided on the other plate, the first inner plate 121 and the second outer plate 222.

[0088] The second wall portion 220 of the second container 200 is inserted into the first wall portion 120 of the first container 100 from the Z-direction side, and the second wall portion 220 is rotated relative to the first wall portion 120 in one circumferential direction within the first wall portion 120, thereby fastening the first threaded portion S11 to the first second threaded portion S21 and the second second threaded portion S22 in that order, thereby moving the second wall portion 220 in the Z' direction relative to the first wall portion 120. On the other hand, with the first threaded portion S11 fastened to the second second threaded portion S22, the second wall portion 220 is rotated relative to the first wall portion 120 in the other circumferential direction within the first wall portion 120, thereby fastening the first threaded portion S11 to the first second threaded portion S21, thereby moving the second wall portion 220 in the Z direction relative to the first wall portion 120.

[0089] Here, in each of (a-1) to (a-3) and (b-1) to (b-3) described above, "initial insertion" means that the second wall portion 220 of the second container 200 is inserted into the first wall portion 120 of the first container 100 from the Z-direction side; "first rotation" means that the second wall portion 220 is rotated relative to the first wall portion 120 in one circumferential direction within the first wall portion 120; and "second rotation" means that the second wall portion 220 is rotated relative to the first wall portion 120 in the other circumferential direction within the first wall portion 120. Apart from the above, the insulated container T2 is attached to and detached from the first container 100, and the relative positional relationship of the second wall portion 220 with respect to the first wall portion 120 in the Z-Z' direction is adjusted, similar to (a-1) to (a-3) and (b-1) to (b-3) of the insulated container T1.

[0090] The third second threaded portion S23 is optional. The third second threaded portion S23 and the fourth second threaded portion S24 are optional. There can be three or more first threaded portions S1. There can be five or more second threaded portions S2.

[0091] If the fourth second threaded portion S24 is omitted, in (a-1) above, the transition from state (a-1-4) to state (a-1-3) and the reverse transition may be omitted; in (a-2) above, the transition from state (a-2-4) to state (a-2-3) and the reverse transition may be omitted; in (a-3) above, the transition from state (a-3-4) to state (a-3-3) and the reverse transition may be omitted; in (b-1) above, the transition from state (b-1-4) to state (b-1-3) and the reverse transition may be omitted; in (b-2) above, the transition from state (b-2-4) to state (b-2-3) and the reverse transition may be omitted; and in (b-3) above, the transition from state (b-3-4) to state (b-3-3) and the reverse transition may be omitted.

[0092] If the third second thread portion S23 and the fourth second thread portion S24 are omitted, in (a-1) above, the transition from state (a-1-3) to state (a-1-2) and the reverse transition, and the transition from state (a-1-4) to state (a-1-3) and the reverse transition may be omitted, in (a-2) above, the transition from state (a-2-3) to state (a-2-2) and the reverse transition, and the transition from state (a-2-4) to state (a-2-3) and the reverse transition may be omitted, in (a-3) above, the transition from state (a-3-3) to state (a-3-2) and the reverse transition, and the transition from state (a-3-4) to state (a-3-3) and It is often acceptable to omit the transitions between the above states. For example, in (b-1) above, it is often acceptable to omit the transition from state (b-1-3) to state (b-1-2) and its reverse, as well as the transition from state (b-1-4) to state (b-1-3) and its reverse. In (b-2) above, it is often acceptable to omit the transition from state (b-2-3) to state (b-2-2) and its reverse, as well as the transition from state (b-2-4) to state (b-2-3) and its reverse. In (b-3) above, it is often acceptable to omit the transition from state (b-3-3) to state (b-3-2) and its reverse, as well as the transition from state (b-3-4) to state (b-3-3) and its reverse.

[0093] The insulated container T2, like the insulated container T1, can accommodate a beverage container P.

[0094] The insulated container T2 described above exhibits the same technical characteristics and effects as the insulated container T1 described in (1) to (5).

[0095] Furthermore, the above-described insulated container is not limited to the above-described embodiment, and can be arbitrarily designed and modified within the scope of the claims. Details are described below.

[0096] The first inner plate 121 and the first outer plate 122 of the first wall portion 120 of the first container 100 described above are not limited to being made of the metal plates described above, but can be made of resin, glass, or the like. The first upper plate 111 and the first lower plate 112 of the bottom portion 110 of the first container 100 described above are not limited to being made of the metal plates described above, but can be made of resin, glass, or the like.

[0097] The second inner plate 221 and the second outer plate 222 of the second wall portion 220 of the second container 200 described above are not limited to being made of the metal plates described above, but can be made of resin, glass, or the like. The second lower plate 211 and the second upper plate 212 of the ceiling portion 210 of the second container 200 described above are not limited to being made of the metal plates described above, but can be made of resin, glass, or the like.

[0098] Furthermore, the first wall portion 120 of the first container 100 described above can be made of solid metal, resin, glass, etc. Furthermore, the second wall portion 220 of the second container 200 described above can be made of solid metal, resin, glass, etc. When the first wall portion 120 is housed in the second wall portion 220 so as to be insertable and removable from the Z' direction side, at least one first threaded portion S1 is provided on either the outer surface of the solid first wall portion 120 or the inner surface of the solid second wall portion 220, and the plurality of second threaded portions S2 are provided on the other. When the second wall portion 220 is housed in the first wall portion 120 so as to be insertable and removable from the Z direction side, at least one first threaded portion S1 is provided on either the inner surface of the solid first wall portion 120 or the outer surface of the solid second wall portion 220, and the plurality of second threaded portions S2 are provided on the other.

[0099] The bottom 110 of the first container 100 described above can also be made of solid resin or glass. The top 210 of the second container 200 described above can also be made of solid resin or glass.

[0100] Although the above-described insulated container was explained as a container for housing a beverage container P, the above-described insulated container can also be used to house items to be kept warm or cold, such as beverages, food, frozen refrigerants, or medical supplies. In this case, it is advisable to omit the opening in the top of the second container or to provide a lid or the like that can be opened and closed to close the opening. [Explanation of symbols]

[0101] T1, T2: Insulated containers 100: 1st container 110: Bottom 111: First upper plate 112: First lower plate 113: First vacuum insulation space 120: First wall section 121: First inner panel 122: First outer panel 123: First vacuum insulation space S1: First threaded portion S11: First threaded portion S12: Second threaded portion 200:Second container 210: Ceiling section 211: Second lower plate 212: Second upper plate 213: Second vacuum insulation space 220: Second wall section 221: Second inner panel 222: Second outer panel 223: Second vacuum insulation space S2: Second thread section S21: First second thread section S22: Second second thread section S23: Third second thread section S24: Fourth second thread section 230:Aperture 300: Handle P: Beverage container

Claims

1. It comprises a first container that is roughly cylindrical with a bottom and a second container that is roughly cylindrical with a top. The first container has a bottom and a substantially cylindrical first wall portion extending from the peripheral edge of the bottom in one of the first directions, the first direction being the height direction of the first container. The first wall portion comprises a substantially cylindrical first inner plate and A substantially cylindrical first outer plate is positioned with a gap between it and the first inner plate, on the radially outer side of the first wall portion, It has a first vacuum insulation space between the first inner plate and the first outer plate, The second container has a ceiling portion and a substantially cylindrical second wall portion extending from the peripheral edge of the ceiling portion in the other direction of the first direction, and the first wall portion is housed within the second wall portion so as to be removable from the other side of the first direction. The second wall portion comprises a substantially cylindrical second inner plate and A substantially cylindrical second outer plate is positioned with a gap to the radially outer side of the second inner plate, It has a second vacuum insulation space between the second inner plate and the second outer plate, One of the first outer plate and the second inner plate is provided with at least one first threaded portion having a continuous set of threads or grooves, and the other is provided with a plurality of second threaded portions, each having a continuous set of threads or grooves, the at least one first threaded portion includes a first first threaded portion, and the plurality of second threaded portions are spaced apart in the first direction and include a first second threaded portion and a second second threaded portion. An insulating container wherein the first wall portion is rotated relative to the second wall portion in one circumferential direction within the second wall portion, thereby fastening the first first thread portion to the first second thread portion and the second second thread portion in that order, thereby moving the second wall portion to the other in the first direction relative to the first wall portion, while the first first thread portion is fastened to the second second thread portion, the first wall portion is rotated relative to the second wall portion in the other circumferential direction within the second wall portion, thereby fastening the first first thread portion to the first second thread portion, thereby moving the second wall portion to one in the first direction relative to the first wall portion.

2. In the heat-insulating container according to claim 1, Each of the intervals between the plurality of second threaded portions in the first direction is approximately the same as the dimension of the first threaded portion in the first direction. An insulating container in which the first wall portion is rotated relative to the second wall portion in one circumferential direction within the second wall portion, thereby fastening the first screw portion to the first second screw portion, and approximately simultaneously with the release of the fastening, the first screw portion to the second second screw portion begins to fasten; and while the first screw portion is fastened to the second second screw portion, the first wall portion is rotated relative to the second wall portion in the other circumferential direction within the second wall portion, thereby releasing the fastening of the first screw portion to the second second screw portion, and approximately simultaneously with the release of the fastening, the first screw portion to the first second screw portion begins to fasten.

3. In the heat-insulating container according to claim 2, The at least one first threaded portion is a plurality of portions, further including a second first threaded portion, and the plurality of first threaded portions are arranged in the first direction at approximately the same interval as the interval between the plurality of second threaded portions. Insulated container, the first wall portion is rotated relative to the second wall portion in one circumferential direction within the second wall portion, thereby fastening the first screw portion to the first second screw portion, and approximately simultaneously with the release of the fastening, the first screw portion to the second second screw portion begins to be fastened, and the second screw portion to the first second screw portion begins to be fastened, while the second screw portion to the first second screw portion is fastened, and with the first screw portion fastened to the second second screw portion, the first wall portion is rotated relative to the second wall portion in the other circumferential direction within the second wall portion, thereby releasing the fastening of the second screw portion to the first second screw portion, and approximately simultaneously with the release of the fastening of the first screw portion to the second second screw portion, the first screw portion to the first second screw portion begins to be fastened.

4. In the heat-insulating container according to claim 1, Each of the intervals between the plurality of second threaded portions in the first direction is smaller than the dimension of the first threaded portion in the first direction. An insulating container in which the first threaded portion is fastened to the first second threaded portion by rotating the first wall portion relative to the second wall portion in one circumferential direction within the second wall portion, and before the fastening is released, the fastening of the first threaded portion to the second second threaded portion begins; and while the first threaded portion is fastened to the second second threaded portion, the first wall portion is rotated relative to the second wall portion in the other circumferential direction within the second wall portion, and before the fastening of the first threaded portion to the second second threaded portion is released, the fastening of the first threaded portion to the first second threaded portion begins.

5. In the heat-insulating container according to claim 4, The at least one first threaded portion is a plurality of portions, further including a second first threaded portion, and the plurality of first threaded portions are arranged in the first direction at approximately the same interval as the interval between the plurality of second threaded portions. An insulating container in which the first threaded portion is fastened to the first second threaded portion by rotating the first wall portion relative to the second wall portion in one circumferential direction within the second wall portion, and before the fastening is released, the fastening of the first threaded portion to the second second threaded portion begins, and the fastening of the second threaded portion to the first second threaded portion begins, while the second threaded portion is fastened to the first second threaded portion, and the first wall portion is rotated relative to the second wall portion in the other circumferential direction within the second wall portion, so that the fastening of the first threaded portion to the first second threaded portion begins before the fastening of the first threaded portion to the first second threaded portion is released and before the fastening of the first threaded portion to the second second threaded portion is released.

6. In the heat-insulating container according to claim 1, Each of the intervals between the plurality of second threaded portions in the first direction is greater than the dimension of the first threaded portion in the first direction. An insulating container wherein the first wall portion is rotated relative to the second wall portion in one circumferential direction within the second wall portion, thereby fastening the first screw portion to the first second screw portion, and after the fastening is released, the fastening of the first screw portion to the second second screw portion begins; and while the first screw portion is fastened to the second second screw portion, the first wall portion is rotated relative to the second wall portion in the other circumferential direction within the second wall portion, thereby releasing the fastening of the first screw portion to the second second screw portion, and after the fastening is released, the fastening of the first screw portion to the first second screw portion begins.

7. In the insulated container according to claim 6, The at least one first threaded portion is a plurality of portions, further including a second first threaded portion, and the plurality of first threaded portions are arranged in the first direction at approximately the same interval as the interval between the plurality of second threaded portions. An insulating container in which the first wall portion is rotated relative to the second wall portion in one circumferential direction within the second wall portion, thereby fastening the first screw portion to the first second screw portion, and after the fastening is released, the fastening of the first screw portion to the second second screw portion begins, and the fastening of the second screw portion to the first second screw portion begins, while the second screw portion is fastened to the first second screw portion, and the fastening of the first screw portion to the second second screw portion is released, and after the fastening is released, the fastening of the first screw portion to the first second screw portion begins.

8. It comprises a first container that is roughly cylindrical with a bottom and a second container that is roughly cylindrical with a top. The first container has a bottom and a substantially cylindrical first wall portion extending from the peripheral edge of the bottom in one of the first directions, the first direction being the height direction of the first container. The first wall portion comprises a substantially cylindrical first inner plate and A substantially cylindrical first outer plate is positioned with a gap between it and the first inner plate, on the radially outer side of the first wall portion, It has a first vacuum insulation space between the first inner plate and the first outer plate, The second container has a ceiling portion and a substantially cylindrical second wall portion extending from the peripheral edge of the ceiling portion in the other direction in the first direction, and the second wall portion is housed in the first wall portion so as to be insertable and removable from one side in the first direction. The second wall portion comprises a substantially cylindrical second inner plate and A substantially cylindrical second outer plate is positioned with a gap to the radially outer side of the second inner plate, It has a second vacuum insulation space between the second inner plate and the second outer plate, One of the first inner plate and the second outer plate is provided with at least one first threaded portion having a continuous set of threads or grooves, and the other is provided with a plurality of second threaded portions, each having a continuous set of threads or grooves, the at least one first threaded portion includes a first first threaded portion, and the plurality of second threaded portions are spaced apart in the first direction and include a first second threaded portion and a second second threaded portion. An insulating container wherein the second wall portion is rotated relative to the first wall portion in one circumferential direction within the first wall portion, thereby fastening the first first thread portion to the first second thread portion and the second second thread portion in that order, thereby moving the second wall portion to the other in the first direction relative to the first wall portion, while the second wall portion is rotated relative to the first wall portion in the other circumferential direction within the first wall portion with the first first thread portion fastened to the first second thread portion, thereby fastening the first first thread portion to the first second thread portion, thereby moving the second wall portion to one in the first direction relative to the first wall portion.

9. In the heat-insulating container according to claim 8, Each of the intervals between the plurality of second threaded portions in the first direction is approximately the same as the dimension of the first threaded portion in the first direction. An insulating container wherein the second wall portion is rotated relative to the first wall portion in one circumferential direction within the first wall portion, thereby fastening the first screw portion to the first second screw portion, and approximately simultaneously with the release of the fastening, the first screw portion begins to fasten to the second screw portion, while the first screw portion is fastened to the second screw portion, the second wall portion is rotated relative to the first wall portion in the other circumferential direction within the first wall portion, thereby releasing the fastening of the first screw portion to the second second screw portion, and approximately simultaneously with the release of the fastening of the first screw portion to the second second screw portion, the first screw portion begins to fasten to the first second screw portion.

10. In the heat-insulating container according to claim 9, The at least one first threaded portion is a plurality of portions, further including a second first threaded portion, and the plurality of first threaded portions are arranged in the first direction at approximately the same interval as the interval between the plurality of second threaded portions. In a heat insulating container, the second wall is rotated relative to the first wall in one circumferential direction within the first wall, thereby fastening the first screw portion to the first second screw portion, and approximately simultaneously with the release of this fastening, the first screw portion begins to fasten to the second screw portion, while the second screw portion is fastened to the first second screw portion, and with the first screw portion fastened to the second screw portion, the second wall is rotated relative to the first wall in the other circumferential direction within the first wall, thereby releasing the fastening of the second screw portion to the first second screw portion, and approximately simultaneously with the release of the fastening of the first screw portion to the second second screw portion, the first screw portion begins to fasten to the first second screw portion.

11. In the heat-insulating container according to claim 8, Each of the intervals between the plurality of second threaded portions in the first direction is smaller than the dimension of the first threaded portion in the first direction. An insulating container in which the first wall portion is rotated relative to the second wall portion in one circumferential direction within the second wall portion, thereby fastening the first threaded portion to the first second threaded portion, and before the fastening is released, the fastening of the first threaded portion to the second second threaded portion begins; and while the first threaded portion is fastened to the second second threaded portion, the second wall portion is rotated relative to the first wall portion in the other circumferential direction within the first wall portion, thereby fastening of the first threaded portion to the first second threaded portion begins before the fastening of the first threaded portion to the second second threaded portion is released.

12. In the heat-insulating container according to claim 11, The at least one first threaded portion is a plurality of portions, further including a second first threaded portion, and the plurality of first threaded portions are arranged in the first direction at approximately the same interval as the interval between the plurality of second threaded portions. An insulating container in which the second wall portion is rotated relative to the first wall portion in one circumferential direction within the first wall portion, thereby fastening the first screw portion to the first second screw portion, and before the fastening is released, the fastening of the first screw portion to the second second screw portion begins, and while the second screw portion is fastened to the first second screw portion, and the first screw portion is fastened to the first second screw portion, the second wall portion is rotated relative to the first wall portion in the other circumferential direction within the first wall portion, thereby fastening of the first screw portion to the first second screw portion begins before the fastening of the second screw portion to the first second screw portion is released and before the fastening of the first screw portion to the second second screw portion is released.

13. In the heat-insulating container according to claim 8, Each of the intervals between the plurality of second threaded portions in the first direction is greater than the dimension of the first threaded portion in the first direction. An insulating container wherein the second wall portion is rotated relative to the first wall portion in one circumferential direction within the first wall portion, thereby fastening the first screw portion to the first second screw portion, and after the fastening is released, the fastening of the first screw portion to the second second screw portion begins; and while the first screw portion is fastened to the second second screw portion, the second wall portion is rotated relative to the first wall portion in the other circumferential direction within the first wall portion, thereby releasing the fastening of the first screw portion to the second second screw portion, and after the fastening is released, the fastening of the first screw portion to the first second screw portion begins.

14. In the heat-insulating container according to claim 13, The at least one first threaded portion is a plurality of portions, further including a second first threaded portion, and the plurality of first threaded portions are arranged in the first direction at approximately the same interval as the interval between the plurality of second threaded portions. An insulating container in which the second wall portion is rotated relative to the first wall portion in one circumferential direction within the first wall portion, thereby fastening the first screw portion to the first second screw portion, and after the fastening is released, the fastening of the first screw portion to the second second screw portion begins, and the fastening of the second screw portion to the first second screw portion begins, while the second screw portion is fastened to the first second screw portion, and the fastening of the first screw portion to the second second screw portion is released, and after the fastening is released, the fastening of the first screw portion to the first second screw portion begins.

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