JP7619628B2 - Partition assembly kit - Google Patents

Description

The present invention relates to a partition assembly kit.

Partitions are sometimes installed to divide large spaces such as offices, conference rooms, and gymnasiums into smaller spaces as needed. Partitions may also be made sound-absorbing to prevent sound from the divided spaces from leaking to the outside. These partitions are made of multiple rectangular boards that are connected together with connecting members, allowing them to divide spaces of various sizes according to purpose.

Patent Document 1 describes an invention relating to a fixed connection device for connecting rectangular plate materials to each other. The fixed connection device is made of an elastic and flexible material, and is configured by connecting two fixed devices via a hinge section. A fixed connection auxiliary protrusion is formed inside the fixed device. The fixed connection member can fix the corners of two plate materials together by inserting the fixed connection auxiliary protrusion into the connection auxiliary holes formed in the four corners of the plate materials. By sequentially connecting the corners of two plate materials together, it can be applied to a partition in which multiple plate materials are connected.

Utility Model Registration No. 3183035

However, when connecting two plate materials using the fixed connecting member described in Patent Document 1, the two plate materials must be held in an upright position until the fixed connecting auxiliary protrusions are inserted into the connecting auxiliary holes of the plate materials to connect them. This makes the assembly work time-consuming and labor-intensive.

In order to solve the above problem, the partition assembly kit of the present invention includes a plurality of side wall members each formed by attaching a long side frame to each of a pair of vertically extending side edges of a rectangular plate material, and a connecting member connecting the plurality of side wall members. The side frame has a groove-shaped retaining portion that accommodates the side edges, and a cylindrical inserted portion that is integrally connected to the retaining portion and opens up and down. The connecting member has an upper wall portion that covers the inserted portion of each of the side frames from above when the inserted portions of the side frames attached to the plurality of side wall members are butted against each other, and a plurality of inserting portions that protrude downward from the upper wall portion and are inserted into the inserted portions of the respective side frames. The inserted portion has an engaging wall portion that extends in the vertical direction, and the engaging wall portion has an engaging portion that extends in the vertical direction, and the engaging portion consists of a concave stripe formed on one side and a convex stripe formed on the other side, which are symmetrical with respect to an imaginary line extending in the vertical direction of the engaging wall portion.

In the above configuration, the engaging wall of the inserted portion of the side frame is formed with an engaging portion having a concave and convex stripes arranged in line symmetry and extending in the vertical direction. Therefore, when the inserted portions of the side frames attached to a pair of side wall members are butted against each other, the convex stripe formed on the engaging wall of one inserted portion engages with the concave stripe formed on the engaging wall of the other inserted portion, and the convex stripe formed on the engaging wall of the other inserted portion engages with the concave stripe formed on the engaging wall of one. This allows the two side wall members to be positioned before being connected with the connecting member, making it easier to connect the side wall members. In this state, when one of the multiple inserting portions of the connecting member is inserted into each of the inserted portions of the pair of side wall members, the pair of side wall members is connected. By connecting the side wall members sequentially in this manner, a partition of an appropriate size can be easily assembled. The partition is easy to assemble.

In addition, because the concave and convex strips of the side frames engage with each other in adjacent side wall members, gaps are less likely to form between adjacent side frames. This makes it less likely for gaps to form between adjacent side frames, and helps prevent sound leakage from between adjacent side wall members.

In the above configuration, it is preferable that the engagement wall portion extends in a thickness direction of the side wall member.
According to the above configuration, when the pair of side wall members are connected in a planar state, the engaging walls of the respective side frames can be easily engaged with each other.

In the above configuration, it is preferable that the recessed streaks and the protruding streaks are formed to have the same cross-sectional shape.
According to the above-mentioned configuration, a gap is unlikely to be formed between the engaging portion of one inserted portion and the engaging portion of the other inserted portion, and sound leakage from the space partitioned by the partition to the outside can be suppressed.

In the above configuration, the inserted portion has a pair of side wall portions extending in a direction along the main surface of the side wall member, and the engaging wall portion extending in the thickness direction of the side wall member and connecting the tips of the pair of side wall portions, and the outer surface of the side wall portion is formed with a side wall groove extending in the vertical direction, and the portion other than the side wall groove is formed as a flat surface, and it is preferable that the width dimension of the side wall groove is equal to or greater than the width dimension of the protrusion.

According to the above configuration, the protrusions formed on the engagement wall can be engaged with the side wall recesses formed on the side wall of the side frame. In other words, the side wall of the side frame attached to one of the pair of side wall members can be engaged with the engagement wall of the side frame attached to the other side wall member. Therefore, when connecting multiple side wall members at right angles, they can be positioned before being connected with the connecting members, making assembly easier. In addition, since gaps are unlikely to form between side frames connected at right angles, sound leakage from between adjacent side wall members can be suppressed.

In the above configuration, a concave inclined surface is formed on the imaginary line side of the concave stripe, inclined relative to the outer surface of the engagement wall portion, and a convex inclined surface is formed on the imaginary line side of the convex stripe, inclined relative to the outer surface of the engagement wall portion, and it is preferable that the concave inclined surface and the convex inclined surface are formed flush with each other.

According to the above-mentioned configuration, the side frames can be smoothly engaged with each other, and the partition can be easily assembled.
In the above configuration, it is preferable that the insertion portion is formed in a U-shaped cross section.

The above configuration allows for less material to be used for the connecting member compared to when the insertion section is tubular with a rectangular cross section, which is advantageous in terms of cost.

This invention makes it easy to assemble partitions.

FIG. 1A is a perspective view of a hollow plate material, FIG. 1B is a cross-sectional view taken along line bb in FIG. 1A, and FIG. 1C is a cross-sectional view taken along line cc in FIG. 1A. 1A is a perspective view of a sheet material constituting a core layer of a hollow plate material, FIG. 1B is a perspective view showing the sheet material in the middle of being folded, FIG. 1C is a perspective view showing the sheet material in the folded state, and FIG. 1D is a cross-sectional view showing the formation of the communicating holes in the hollow plate material. 1A is a perspective view of a side wall member, FIG. 1B is an enlarged perspective view of the dotted line portion in FIG. 1A, and FIG. 1C is an enlarged perspective view of the dashed-dotted line portion in FIG. 1A as viewed from the inside. FIG. 2 is an enlarged perspective view of the dotted line portion of FIG. 1 . FIG. 2 is an explanatory diagram of the dotted line portion in FIG. 1 . FIG. FIG. FIG. FIG. FIG. 2 is an explanatory diagram of the dashed dotted line portion in FIG. 1 . FIG. 2 is an explanatory diagram of the portion enclosed by the two-dot chain line in FIG. 1 . This is a cross-sectional view taken along line 13-13 in Figure 12. FIG. 4 is a perspective view of the L-shaped connecting member as viewed from below. FIG. FIG. 13 is an explanatory diagram of a case where one side wall member is used. 13A to 13G are top views of the side frames of the modified examples. FIG. 11 is a perspective view of a modified upper connecting member as viewed from below.

The partition assembly kit of the present invention will be described below together with an assembled partition. The partition assembly kit of this embodiment will be described as being for assembling partition 1 shown in Figure 1. Partition 1 has sound-absorbing properties to prevent sound from leaking from the partitioned space to the outside.

As shown in FIG. 1, the partition assembly kit for assembling the partition 1 of this embodiment includes sidewall members 10, connecting members 30, and cap members 50. The sidewall members 10 are rectangular plates measuring approximately 180 cm by approximately 90 cm. The partition 1 is formed by connecting five sidewall members 10 with connecting members 30. In the following description, the longitudinal direction of the sidewall members 10 is defined as the up-down direction.

As shown in Figures 2(a) and 4, the sidewall member 10 includes a hollow plate material 3, which is a plate-shaped hollow structure with multiple cells S arranged side by side inside, a sound-absorbing material 2 made of a porous material, and a frame member 20.

First, the hollow plate material 3 will be described.
As shown in Fig. 2(a), the hollow plate material 3 is composed of a core layer 4 in which a plurality of cells S are arranged side by side, and sheet-like skin layers 5 and 6 joined to both sides in the thickness direction of the core layer 4 (both the top and bottom sides in Fig. 2(a)). As shown in Fig. 2(b) and Fig. 2(c), the core layer 4 is formed by folding a sheet material made of thermoplastic resin molded into a predetermined shape. The core layer 4 is composed of a first wall portion 4a, a second wall portion 4b, and a side wall portion 4c that is erected between the first wall portion 4a and the second wall portion 4b and divides the cells S into a hexagonal column shape.

As shown in FIG. 2(b) and FIG. 2(c), the cells S formed inside the core layer 4 include a first cell S1 and a second cell S2 having different structures. As shown in FIG. 2(b), in the first cell S1, a first wall portion 4a having a two-layer structure is provided at one end of the side wall portion 4c. The layers of the first wall portion 4a having the two-layer structure are bonded to each other. In addition, in the first cell S1, a second wall portion 4b having a one-layer structure is provided at the other end of the side wall portion 4c. On the other hand, as shown in FIG. 2(c), in the second cell S2, a first wall portion 4a having a one-layer structure is provided at one end of the side wall portion 4c. In addition, in the second cell S2, a second wall portion 4b having a two-layer structure is provided at the other end of the side wall portion 4c. The layers of the second wall portion 4b having the two-layer structure are bonded to each other. As shown in Figures 2(b) and 2(c), adjacent first cells S1 and adjacent second cells S2 are partitioned by side walls 4c each having a two-layer structure.

As shown in FIG. 2(a), the first cells S1 are arranged in a row along the X direction, and when FIG. 2(a) is viewed from above, two adjacent first cells S1 share one side of a hexagon. Similarly, the second cells S2 are arranged in a row along the X direction, and when FIG. 2(a) is viewed from above, two adjacent second cells S2 share one side of a hexagon. The rows of first cells S1 and the rows of second cells S2 are alternately arranged in the Y direction perpendicular to the X direction. The first cells S1 and second cells S2 form a honeycomb structure as a whole in the core layer 4.

2(a) to (c), a skin layer 5, which is a sheet material made of a thermoplastic resin, is joined to the first wall portion 4a of the core layer 4 configured as described above. A skin layer 6, which is a sheet material made of a thermoplastic resin, is joined to the second wall portion 4b of the core layer 4. In this embodiment, one end of the side wall portion 4c in the core layer 4 is blocked by the first wall portion 4a and the skin layer 5 of the core layer 4. That is, the first wall portion 4a and the skin layer 5 constitute a first blocking wall 3a that divides the cell S from one end. Similarly, the other end of the side wall portion 4c in the core layer 4 is blocked by the second wall portion 4b and the skin layer 6 of the core layer 4. That is, the second wall portion 4b and the skin layer 6 constitute a second blocking wall 3b that divides the cell S from the other end.

As shown in Figures 2(b) and 2(c), the first blocking wall 3a of the hollow plate material 3 has a communication hole 7 that connects the inside and outside of the cell S. Specifically, as shown in Figure 2(b), in the first cell S1, the communication hole 7 penetrates the skin layer 5 and the first wall portion 4a of the two-layer structure. Also, as shown in Figure 2(c), in the second cell S2, the communication hole 7 penetrates the skin layer 5 and the first wall portion 4a of the one-layer structure.

As shown in FIG. 2(a), one communication hole 7 is provided for each cell S. In this embodiment, the communication hole 7 is located at the center of the hexagonal shape of each cell S when the hollow plate material 3 is viewed from the first blocking wall 3a side. As shown in FIG. 2(b) and FIG. 2(c), the opening diameter of each communication hole 7 is set to be equal to or less than the length of one side of the hexagon when the cell S is viewed from the first blocking wall 3a side. Specifically, the opening diameter of each communication hole 7 is set to a fraction of the distance P1 between the centers of adjacent cells S in the X direction (for example, about 0.5 to 3.0 mm).

Next, a method for manufacturing the hollow plate material 3 will be described with reference to FIG.
As shown in FIG. 3A, the first sheet material 100 is formed by forming a sheet made of thermoplastic resin into a predetermined shape. In the first sheet material 100, a band-shaped flat area 110 and a bulging area 120 are alternately arranged in the longitudinal direction (X direction) of the first sheet material 100. In the bulging area 120, a first bulging portion 121 having a cross section of a downward groove shape consisting of an upper surface and a pair of side surfaces is formed over the entire extension direction (Y direction) of the bulging area 120. Note that the angle between the upper surface and the side surface of the first bulging portion 121 is preferably 90 degrees, and as a result, the cross section of the first bulging portion 121 is a downward U-shape. In addition, the width of the first bulging portion 121 (the length of the short side of the upper surface) is set to be equal to the width of the flat area 110 and twice the length of the bulging height of the first bulging portion 121 (the length of the short side of the side surface).

In addition, in the bulging region 120, a plurality of second bulging portions 122, whose cross-sectional shape is a trapezoid obtained by bisecting a regular hexagon at its longest diagonal, are formed so as to be perpendicular to the first bulging portions 121. The bulging height of the second bulging portions 122 is set to be equal to the bulging height of the first bulging portions 121. In addition, the distance between adjacent second bulging portions 122 is equal to the width of the upper surface of the second bulging portions 122.

The first bulge 121 and the second bulge 122 are formed by partially bulging the sheet upwards using the plasticity of the sheet. The first sheet material 100 can be formed from a single sheet using a known forming method such as vacuum forming or compression forming.

3(a) and 3(b), the first sheet material 100 configured as described above is folded along the boundary lines P and Q to form the core layer 4. Specifically, the first sheet material 100 is folded in a valley at the boundary line P between the flat area 110 and the bulging area 120, and in a mountain at the boundary line Q between the top surface and side surface of the first bulging portion 121, and compressed in the X direction. Then, as shown in FIG. 3(b) and FIG. 3(c), the top surface and side surface of the first bulging portion 121 are folded over, and the end surface of the second bulging portion 122 and the flat area 110 are folded over, forming a rectangular column-shaped partition body 130 extending in the Y direction for one bulging area 120. Such partition bodies 130 are continuously formed in the X direction to form the hollow plate-shaped core layer 4. In this embodiment, the direction in which the first sheet material 100 is compressed to be folded is the direction in which the cells S are arranged side by side (X direction).

When the first sheet material 100 is compressed as described above, the first wall 4a of the core layer 4 is formed by the upper surface and side surface of the first bulge 121, and the second wall 4b of the core layer 4 is formed by the end surface of the second bulge 122 and the flat area 110. As shown in FIG. 2(c), the portion of the first wall 4a where the upper surface and side surface of the first bulge 121 are folded over to form a two-layer structure, and the portion of the second wall 4b where the end surface of the second bulge 122 and the flat area 110 are folded over to form a two-layer structure are overlapping portions 131.

The hexagonal columnar region formed by folding the second bulging portion 122 becomes the second cell S2, and the hexagonal columnar region formed between a pair of adjacent partitions 130 becomes the first cell S1. In this embodiment, the upper surface and side surface of the second bulging portion 122 constitute the side wall portion 4c of the second cell S2, and the side surface of the second bulging portion 122 and the flat portion located between the second bulging portions 122 in the bulging region 120 constitute the side wall portion 4c of the first cell S1. The contact portion between the upper surfaces of the second bulging portions 122 and the contact portion between the flat portions in the bulging region 120 constitute the side wall portion 4c having a two-layer structure. The upper portion of the first cell S1 is partitioned by a pair of overlapping portions 131, and the lower portion of the second cell S2 is partitioned by a pair of overlapping portions 131. In addition, when carrying out this folding process, it is preferable to heat-treat the first sheet material 100 so that it is softened.

A second sheet material made of a thermoplastic resin is bonded to both main surfaces of the core layer 4 obtained in this manner by thermal welding. The second sheet material bonded to the first wall portion 4a constituting one main surface of the core layer 4 becomes the skin layer 5, and together with the first wall portion 4a of the core layer 4, constitutes the first blocking wall 3a that blocks the cells S from one end side. The second sheet material bonded to the second wall portion 4b constituting the other main surface of the core layer 4 becomes the skin layer 6, and together with the second wall portion 4b of the core layer 4, constitutes the second blocking wall 3b that blocks the cells S from the other end side.

When the second sheet material (skin layers 5, 6) is heat welded to the core layer 4, the first wall portions 4a (overlapped portions 131) of the two-layer structure in the first cell S1 are heat welded to each other. Similarly, the second wall portions 4b (overlapped portions 131) of the two-layer structure in the second cell S2 are heat welded to each other.

Through the above steps, a hollow plate material 3 is obtained in which a large number of first cells S1 or second cells S2 are arranged in rows in the X direction, and a large number of first cells S1 and second cells S2 are arranged alternately in the Y direction.

After that, a number of communication holes 7 are formed in the skin layer 5 of the hollow plate material 3 and the first wall portion 4a (first blocking wall 3a) of the core layer 4. The communication holes 7 are formed by penetrating a penetrating tool T such as a drill, needle, or punch into the first blocking wall 3a of the hollow plate material 3. As shown in FIG. 3(d), the penetrating tools T are arranged at intervals approximately equal to the intervals between the centers of adjacent cells S. The hollow plate material 3 is placed and fixed below the multiple penetrating tools T, and the penetrating tool T is moved downward. In this way, a communication hole 7 is formed in each of the first blocking walls 3a of the hollow plate material 3, approximately in the center of each cell S. Through the above steps, a hollow plate material 3 having a number of communication holes 7 formed therein is manufactured. The hollow plate material 3 in this embodiment has a plate thickness of approximately 20 mm.

Next, as shown in FIG. 4(a), the obtained hollow plate material 3 is cut to a size of approximately 180 cm x approximately 90 cm. In addition, as shown in FIG. 4(b), rectangular cutouts 3c are formed in the four corners of the rectangular hollow plate material 3 when viewed from the front. The cutouts 3c are portions for inserting the insertion portion 52 of the cap member 50, which will be described later. The hollow plate material 3 obtained in this manner is applied to the side wall member 10.

As shown in FIG. 4(c), the sound-absorbing material 2 is formed in a rectangular plate shape and is attached in advance to the first blocking wall 3a side of the hollow plate material 3, which is the side where the communication hole 7 is formed. The sound-absorbing material 2 is partially attached to the first blocking wall 3a of the hollow plate material 3, for example, with an adhesive, double-sided tape, hook-and-loop fastener, etc. The size of the sound-absorbing material 2 is slightly smaller than the cut hollow plate material 3. The material of the sound-absorbing material 2 is not particularly limited, but examples include porous materials such as foamed resin material, felt material, and nonwoven fabric.

As shown in FIG. 4(a), the frame member 20 includes side frames 21 attached to a pair of opposing sides of the hollow plate material 3, and upper and lower frames 20a attached to the upper and lower sides. The frame members 20 are attached to each side of the hollow plate material 3 in advance.

The upper and lower frames 20a are elongated members with a U-shaped cross section. The upper and lower frames 20a are attached so that the upper or lower edge of the hollow plate material 3 is accommodated in a groove-shaped space inside the U-shaped cross section. As shown in FIG. 4(b), the longitudinal length of the upper and lower frames 20a is slightly shorter than the lateral length of the hollow plate material 3. Specifically, it is approximately equal to the length between a pair of notches 3c formed at the lateral ends of the hollow plate material 3.

7 and 8, the side frame 21 is an elongated member having a pair of side walls 22, an engagement wall 23, and a connecting wall 24. The pair of side walls 22 are formed parallel to each other. The engagement wall 23 and the connecting wall 24 are formed perpendicular to the side walls 22. As shown in Figs. 4(b) and 4(c), the space surrounded by the side walls 22 and the connecting wall 24 constitutes a holding section 25 that stores the side of the hollow plate material 3. The holding section 25 is formed with a U-shaped cross section extending in the vertical direction. The side frame 21 is attached in a state in which the pair of side walls 22 are aligned with the first blocking wall 3a and the second blocking wall 3b of the hollow plate material 3, and the side of the hollow plate material 3 is stored in the groove-shaped space inside the holding section 25.

The space surrounded by the side wall 22, the engagement wall 23, and the connecting wall 24 constitutes the inserted portion 26 into which the inserting portions 33, 43 of the connecting member 30, which will be described later, are inserted. The inserted portion 26 is formed in a cylindrical shape that extends in the vertical direction and has a substantially square cross section, and is open at the top and bottom. The inserting portions 33, 43 of the upper connecting member 30a, which will be described later, are inserted through the upper opening, and the inserting portion of the lower connecting member 30b, which will be described later, is inserted through the lower opening.

As shown in FIG. 8, an engagement portion 23a extending in the vertical direction is formed on the outer surface of the engagement wall portion 23. The engagement portion 23a is composed of a concave rib 27 formed on one side and a convex rib 28 formed on the other side, which are positioned so as to be line-symmetrical with respect to an imaginary line L extending in the vertical direction at the center of the width direction of the engagement wall portion 23. The concave rib 27 and the convex rib 28 are formed over the entire vertical length of the engagement wall portion 23.

8, the grooves 27 and the protrusions 28 are formed to have a substantially trapezoidal cross section. The outer surface of the engagement wall portion 23, except for the grooves 27 and the protrusions 28, is formed as a flat surface.
The concave stripe 27 has a concave stripe inclined surface 27a inclined with respect to the flat surface of the engagement wall portion 23 on the imaginary line L side. Also, the convex stripe 28 has a convex stripe inclined surface 28a inclined with respect to the flat surface of the engagement wall portion 23 on the imaginary line L side. The concave stripe inclined surface 27a and the convex stripe inclined surface 28a are formed from the position of the imaginary line L. Also, the inclination angle of the concave stripe inclined surface 27a and the inclination angle of the convex stripe inclined surface 28a are approximately equal. Therefore, the concave stripe inclined surface 27a and the convex stripe inclined surface 28a are formed flush with each other.

7 and 8, the outer surface of the pair of side wall portions 22 on the side of the inserted portion 26 is formed with a side wall groove 29 extending in the vertical direction. The outer surface of the side wall portion 22 on the side of the inserted portion 26 is formed as a flat surface except for the side wall groove 29. The width direction length of the side wall groove 29 is approximately equal to the width of the engaging portion 23a formed on the engaging wall portion 23. Specifically, as shown in FIG. 8, two grooves having a width approximately equal to the groove 27 are formed in a shape connected to each other at a position that is line-symmetrical with respect to a virtual line M extending in the vertical direction at the center of the width direction of the side wall portion 22 on the side of the inserted portion 26. The side wall groove 29 is formed over the entire length of the side wall portion 22 in the vertical direction. In addition, a side wall groove inclined surface 29a inclined with respect to the flat surface of the side wall portion 22 is formed at both ends of the side wall groove 29 in the width direction. The inclination angle of the side wall groove inclined surface 29a relative to the side wall portion 22 is approximately equal to the inclination angle of the groove inclined surface 27a and the protruding inclined surface 28a relative to the engagement wall portion 23.

As shown in FIG. 7, a pair of side walls 22 of the side frame 21 have circular mounting holes 22a on the inserted portion 26 side and the holding portion 25 side. The mounting holes 22a penetrate both ends of the side walls 22 in the vertical direction. Therefore, a total of eight mounting holes 22a penetrate one side frame 21. The mounting holes 22a are formed at positions that match the mounting holes 36 of the insertion portion 33 and the mounting holes 46 of the insertion portion 43 when the connecting member 30 and the cap member 50, which will be described later, are inserted into the inserted portion 26 and the holding portion 25 of the side frame 21.

As shown in FIG. 1, the connecting member 30 that connects the side wall members 10 includes an upper connecting member 30a and a lower connecting member 30b. The upper connecting member 30a is inserted from above the inserted portion 26 of the side frame 21 to connect the side wall members 10 at the upper portion of the side frame 21. The lower connecting member 30b is inserted from below the inserted portion 26 of the side frame 21 to connect the side wall members 10 at the lower portion of the side frame 21. The upper connecting member 30a corresponds to the connecting member defined in the claims.

As shown in Figures 14 and 15, the upper connecting member 30a and the lower connecting member 30b have the same basic shape. The lower connecting member 30b has a shape in which the legs 30c are attached to the upper wall portions 32, 42 of the upper connecting member 30a. The legs 30c are disk-shaped members made of hard rubber, and are attached via a hexagonal column-shaped connecting portion 30d. The shape of the lower connecting member 30b is the same as that of the upper connecting member 30a, except for the presence or absence of the legs 30c and the connecting portion 30d. Therefore, only the upper connecting member 30a will be described below.

As shown in Figures 9 and 14, the connecting member 30 of this embodiment has two different shapes. The connecting member 30 (upper connecting member 30a) shown in Figure 9 is an I-shaped connecting member 31 that is I-shaped when viewed from above. The connecting member 30 (upper connecting member 30a) shown in Figure 14 is an L-shaped connecting member 41 that is L-shaped when viewed from above.

As shown in Figures 5 and 6, the I-shaped connecting member 31 can be used to connect two side wall members 10 together in a planar manner. The I-shaped connecting member 31 is attached so as to straddle the two side frames 21 by butting the engaging wall portions 23 of the side frames 21 of the two side wall members 10 together and engaging the engaging portions 23a with each other.

As shown in FIG. 11, the I-shaped connecting member 31 can also be used to connect two side wall members 10 perpendicular to each other. The engaging portions 23a of the side frames 21 of the two side wall members 10 are butted against the side wall grooves 29, and the engaging portions 23a are engaged with the side wall grooves 29, and the connecting member is attached in such a way that it straddles the two side frames 21.

As shown in FIG. 9, the I-shaped connecting member 31 has a rectangular plate-shaped upper wall portion 32 and two insertion portions 33 that protrude vertically from the upper wall portion 32. The upper wall portion 32 is formed to a size that covers the two insertion portions 26 from above when the insertion portions 26 of the two side wall members 10 are butted against each other. In this state, the insertion portions 33 are inserted into each of the pair of insertion portions 26.

As shown in FIG. 9, the two insertion sections 33 are formed to have the same shape and size. The insertion section 33 is formed with a U-shaped cross section in which one end edges of a pair of rectangular side walls 34 are connected by a rectangular connecting wall 35. The two insertion sections 33 are formed with the open sides of the U-shaped cross section facing each other.

7 and 9, the width D1 of the side wall 34 of the insertion portion 33 is slightly shorter than the length D2 of the side wall member 10 in the short direction on the inner surface of the inserted portion 26 of the side frame 21. The width D3 of the connecting wall 35 of the insertion portion 33 is slightly shorter than the length D4 of the side wall member 10 in the thickness direction on the inner surface of the inserted portion 26 of the side frame 21. Furthermore, the distance D5 between the side walls 34 of the two insertion portions 33 is approximately equal to the sum of the thicknesses of the two engaging walls 23 when the engaging portions 23a of the two side wall members 10 are engaged with each other. Furthermore, the distance D5 between the side walls 34 of the two insertion portions 33 is approximately equal to the sum of the thicknesses of the engaging walls 23 and the side wall portions 22 when the engaging portions 23a of the two side wall members 10 are engaged with the side wall grooves 29.

As shown in FIG. 9, a circular mounting hole 36 is provided in the center of the pair of side walls 34 and the connecting wall 35. The size of the mounting hole 36 is approximately the same as the size of the mounting hole 22a formed in the side frame 21.

As shown in Figures 12 and 13, the L-shaped connecting member 41 can be used to connect three side wall members 10 together in a T-shape when viewed from above. In two of the three side wall members 10 connected by the L-shaped connecting member 41, the engaging portions 23a of the engaging wall portions 23 of the side frames 21 are engaged with each other and connected in a flat manner. In the remaining side wall member 10, the engaging portion 23a of the side frame 21 is engaged with the side wall groove 29 of one of the side frames 21 that is connected in a flat manner and connected vertically. In this state, the L-shaped connecting member 41 is attached in a manner that straddles the three side frames 21.

As shown in FIG. 14, the L-shaped connecting member 41 has an upper wall portion 42 that is an L-shaped plate when viewed from above, and three insertion portions 43 that protrude vertically from the upper wall portion 42. The upper wall portion 42 is formed to a size that covers the three insertion portions 26 from above when the insertion portions 26 of the three side wall members 10 are butted against each other. In this state, the insertion portions 43 are inserted into each of the pair of insertion portions 26.

As shown in FIG. 14, the three insertion sections 43 are formed to have the same shape and size. The insertion sections 43 are formed to have a U-shaped cross section with one end edge of a pair of rectangular side walls 44 connected by a rectangular connecting wall 45. Two of the three insertion sections 43 are arranged with the opening sides of the U-shaped cross section facing each other. The remaining insertion section 43 is arranged so that the opening side of the U-shaped cross section faces the side wall 44 of the other insertion section 43.

As shown in FIG. 14, the width of the side wall 44 of the insertion part 43 of the L-shaped connecting member 41 is equal to the width D1 of the side wall 34 of the insertion part 33 of the I-shaped connecting member 31. The width of the connecting wall 45 of the insertion part 43 of the L-shaped connecting member 41 is equal to the width D3 of the connecting wall 35 of the insertion part 33 of the I-shaped connecting member 31. Furthermore, the distance D6 between the side walls 44 of the two insertion parts 43 whose opening sides face each other is equal to the distance D5 between the side walls 34 of the two insertion parts 33 of the I-shaped connecting member 31. And the distance D7 between the remaining one insertion part 43 and the side wall 44 of the other insertion part 43 is also equal to the distance D5 between the side walls 34 of the two insertion parts 33 of the I-shaped connecting member 31.

As shown in FIG. 14, a circular mounting hole 46 is provided in the center of the side wall 44 and the connecting wall 45. The mounting hole 46 is formed in the side wall 44 and the connecting wall 45 located in the direction along the long side 42a and short side 42b of the upper wall portion 42. On the other hand, it is not formed in the connecting wall 45 located in the direction along the connecting side 42c connecting the long side 42a and short side 42b. The size of the mounting hole 46 is approximately the same as the size of the mounting hole 22a formed in the side frame 21.

As shown in Figures 5 and 6, the cap member 50 can be used to cover the holding portion 25 of the side frame 21 when two side wall members 10 are connected together in a flat shape. Also, as shown in Figures 11 and 12, when two side wall members 10 are connected together at a right angle or in a T-shape when viewed from above, the cap member 50 can be used to cover the holding portion 25 of the side frame 21. Furthermore, as shown in Figure 16, when only one side wall member 10 is used in an upright position, the cap member 50 can be used to cover the holding portion 25 and the inserted portion 26 of the side frame 21.

As shown in FIG. 10, the cap member 50 has a square plate-shaped upper wall portion 51 and an insertion portion 52 that protrudes vertically from the upper wall portion 51. The upper wall portion 51 is formed to a size that covers from above the holding portion 25 of the side frame 21 attached to the side wall member 10. In this state, the insertion portion 52 is inserted into the holding portion 25.

The insertion section 52 has a pair of rectangular side walls 53 arranged in parallel. The width of the side walls 53 is equal to the width D1 of the side wall 34 of the insertion section 33 of the I-shaped connecting member 31 and the width of the side wall 44 of the insertion section 43 of the L-shaped connecting member 41. The distance between the outer surfaces of the pair of side walls 53 is equal to the width D3 of the connecting wall 35 of the insertion section 33 of the I-shaped connecting member 31 and the width of the connecting wall 45 of the insertion section 43 of the L-shaped connecting member 41. The vertical length of the side walls 53 is equal to the vertical length of the insertion section 33 of the I-shaped connecting member 31 and the insertion section 43 of the L-shaped connecting member 41. The vertical length of the side walls 53 is slightly shorter than the vertical length of the notch 3c of the hollow plate material 3.

Next, a method for assembling the partition 1 will be described together with the function of the partition assembly kit.
First, five side wall members 10 shown in Fig. 4 are prepared. Furthermore, two I-shaped connecting members 31 and one L-shaped connecting member 41 are prepared as upper connecting members 30a. A lower connecting member 30b is prepared in such a shape that a leg portion 30c and a connecting portion 30d are attached to the I-shaped connecting member 31 and the L-shaped connecting member 41. Furthermore, a cap member 50 is prepared to be attached to a portion of the side frame 21 where the connecting members 30 cannot be attached.

As shown in FIG. 11, the side wall members 10 are assembled starting from the part where they are connected at a right angle. The two side wall members 10 are held in an upright position so that they are perpendicular to each other, and the inserted portions 26 of the side frames 21 of the side wall members 10 are butted against each other. At this time, the sound absorbing material 2 of the side wall members 10 is positioned on the inside. The side wall grooves 29 of the side frame 21 of one side wall member 10 are then fitted into the engaging portions 23a of the side frame 21 of the other side wall member 10.

In the side wall 22 on the side of the inserted portion 26 of the side frame 21, the portion other than the side wall groove 29 is a flat surface, and in the engaging wall 23, the portion other than the engaging portion 23a is a flat surface. The width of the side wall groove 29 is approximately the same as or slightly longer than the width of the engaging portion 23a. Furthermore, the inclination angle of the side wall groove inclined surface 29a with respect to the side wall 22 is approximately equal to the inclination angle of the groove inclined surface 27a and the convex inclined surface 28a with respect to the engaging wall 23. Therefore, the convex 28 is smoothly accommodated in the side wall groove 29. Then, the flat surface of the side wall 22 and the flat surface of the engaging wall 23 come into contact, and the convex 28 of the engaging portion 23a is engaged with the side wall groove 29.

In this state, the two insertion portions 33 of the I-shaped connecting member 31 are inserted from above into the insertion portions 26 of the side frames 21 of the two side wall members 10. This connects the two side wall members 10 with the engagement portions 23a and the side wall grooves 29 engaged. In addition, the lower connecting member 30b corresponding to the I-shaped connecting member 31 is inserted from below the insertion portions 26. This connects the two side wall members 10 from above and below, stabilizing the connection state.

When the I-shaped connecting member 31 is inserted into the side frame 21, the mounting hole 36 of the insertion portion 33 and the mounting hole 22a of the side wall portion 22 are aligned. Fasteners such as screws (not shown) are inserted into the mounting holes 22a and 36 to secure the member in place. The lower connecting member 30b is also secured in the same manner.

The width D1 of the side wall 34 of the insertion portion 33 of the I-shaped connecting member 31 is slightly shorter than the length D2 in the short direction of the side wall member 10 on the inner surface of the inserted portion 26 of the side frame 21. The width D3 of the connecting wall 35 of the insertion portion 33 of the I-shaped connecting member 31 is slightly shorter than the length D4 in the thickness direction of the side wall member 10 on the inner surface of the inserted portion 26 of the side frame 21. Furthermore, the distance D5 between the side walls 34 of the two insertion portions 33 is approximately equal to the sum of the thicknesses of the engagement wall portion 23 and the side wall portion 22 when the engagement portions 23a of the two side wall members 10 and the side wall grooves 29 are engaged. Therefore, the I-shaped connecting member 31 attached to the side frame 21 is in a state in which the outer surface of the insertion portion 33 abuts against the inner surface of the inserted portion 26. The rattle between the engagement portion 23a and the side wall groove 29 is suppressed, stabilizing the connection state of the two side wall members 10.

Next, as shown in Figures 5 and 6, a side wall member 10 is connected in a planar manner to one of the side wall members 10 connected at a right angle. One side wall member 10 is held in an upright position against one of the side wall members 10 connected at a right angle, and the inserted portions 26 of the respective side frames 21 are butted against each other. At this time, the sound absorbing material 2 of the side wall member 10 is also positioned on the inside. Then, the engaging portion 23a of one side frame 21 of the side wall members 10 connected in a planar manner is aligned with the engaging portion 23a of the other side frame 21. The convex rib 28 of one engaging portion 23a is accommodated in the concave rib 27 of the other engaging portion 23a, and the convex rib 28 of the other engaging portion 23a is accommodated in the concave rib 27 of the one engaging portion 23a. The concave rib 27 and the convex rib 28 are smoothly accommodated along the concave rib inclined surface 27a and the convex rib inclined surface 28a because the concave rib inclined surface 27a and the convex rib inclined surface 28a are flush with each other. Then, the flat surfaces of the engagement wall portion 23 come into contact with each other, and the convex rib 28 engages with the concave rib 27.

In this state, the two insertion portions 33 of the I-shaped connecting member 31 are inserted from above into the insertion portions 26 of the side frames 21 of the two side wall members 10. This connects the two side wall members 10 with the engagement portions 23a engaged with each other. In addition, the lower connecting member 30b corresponding to the I-shaped connecting member 31 is inserted from below the insertion portion 26. This connects the two side wall members 10 from above and below, stabilizing the connection state.

The width D1 of the side wall 34 of the insertion portion 33 of the I-shaped connecting member 31 is slightly shorter than the length D2 in the short direction of the side wall member 10 on the inner surface of the inserted portion 26 of the side frame 21. The width D3 of the connecting wall 35 of the insertion portion 33 of the I-shaped connecting member 31 is slightly shorter than the length D4 in the thickness direction of the side wall member 10 on the inner surface of the inserted portion 26 of the side frame 21. Furthermore, the distance D5 between the side walls 34 of the two insertion portions 33 is approximately equal to the sum of the thicknesses of the two engagement walls 23 when the engagement portions 23a of the two side wall members 10 are engaged with each other. Therefore, the I-shaped connecting member 31 attached to the side frame 21 is in a state in which the outer surface of the insertion portion 33 abuts against the inner surface of the inserted portion 26. The rattle between the engagement portions 23a is suppressed, and the connection state of the two side wall members 10 is stabilized.

When the I-shaped connecting member 31 is inserted into the side frame 21, the mounting hole 36 of the insertion portion 33 and the mounting hole 22a of the side wall portion 22 are aligned. Fasteners such as screws (not shown) are inserted into the mounting holes 22a and 36 to secure the member in place. The lower connecting member 30b is also secured in the same manner.

Next, as shown in Figures 12 and 13, a sidewall member 10 is connected in a planar manner to the other of the sidewall members 10 connected at right angles, and a sidewall member 10 is connected at a right angle. The two sidewall members 10 are held in an upright state against the other of the sidewall members 10 previously connected at right angles, with the inserted portions 26 of the respective side frames 21 butting against each other. The sidewall member 10 to be newly connected in a planar manner is held so that the engaging portion 23a of the side frame 21 engages with the other engaging portion 23a of the sidewall member 10. The sidewall member 10 to be newly connected at a right angle is held so that the engaging portion 23a of the side frame 21 engages with the other sidewall groove 29 of the sidewall member 10.

In this state, the three insertion portions 43 of the L-shaped connecting member 41 are inserted from above into the insertion portions 26 of the side frames 21 of the three side wall members 10. This connects the three side wall members 10 with their engagement portions 23a engaged with each other, or with the engagement portions 23a engaged with the side wall grooves 29. In addition, the lower connecting member 30b corresponding to the L-shaped connecting member 41 is inserted from below the insertion portions 26. This connects the three side wall members 10 from above and below, stabilizing the connection state.

The width of the side wall 44 of the insertion part 43 of the L-shaped connecting member 41 and the width of the connecting wall 45 are equal to those of the I-shaped connecting member 31. In addition, the distance D6 between the side walls 44 of the two insertion parts 43 whose opening sides face each other is equal to the distance D5 between the side walls 34 of the two insertion parts 33 of the I-shaped connecting member 31. The distance D7 between the remaining one insertion part 43 and the side wall 44 of the other insertion part 43 is also equal to the distance D5 between the side walls 34 of the two insertion parts 33 of the I-shaped connecting member 31. Therefore, the L-shaped connecting member 41 attached to the side frame 21 is in a state where the outer surface of the insertion part 43 abuts against the inner surface of the inserted part 26. The rattle between the engaging parts 23a and the rattle between the engaging parts 23a and the side wall grooves 29 is suppressed, and the connection state of the three side wall members 10 is stabilized.

When the L-shaped connecting member 41 is inserted into the side frame 21, the mounting hole 46 of the insertion portion 43 and the mounting hole 22a of the side wall portion 22 are aligned. Fasteners such as screws (not shown) are inserted into the mounting holes 22a and 46 to secure the L-shaped connecting member 41 in place. The lower connecting member 30b is also secured in the same manner.

As shown in FIG. 1, the upper and lower parts of the holding part 25 and the inserted part 26 of the side frame 21 of the five side wall members 10 that is not connected to the other side wall members 10 are open. A lower connecting member 30b, which is an I-shaped connecting member with legs 30c and connecting parts 30d attached, is attached to the lower part of the side frame 21 in this portion. The lower connecting member 30b is attached so that the two inserting parts are inserted into the holding part 25 and the inserted part 26 at the lower part of the side frame 21, respectively. This results in the lower connecting member 30b with the legs 30c and connecting parts 30d being attached to all the lower parts of the side frame 21. The lower part of each side edge of the side wall member 10 is supported by the disk-shaped legs 30c, so that the partition 1 is stable in an upright position.

Of the side frames 21 of the five side wall members 10, the side frames 21 that are connected to other side wall members 10 have an open upper portion of the holding portion 25. Also, of the side frames 21 of the five side wall members 10, the side frames 21 that are not connected to other side wall members 10 have an open upper portion of the holding portion 25 and the inserted portion 26. The cap members 50 are attached to these portions.

When the cap member 50 is inserted into the side frame 21, the mounting hole 54 of the insertion portion 52 and the mounting hole 22a of the side wall portion 22 are aligned. Fasteners such as screws (not shown) are inserted into the mounting holes 22a and 54 to secure them in place.

Through the above assembly operations, the partition 1 as shown in FIG. 1 is assembled.
According to the above embodiment, the following effects are achieved.
(1) The partition assembly kit of the above embodiment includes a side wall member 10 to which a long side frame 21 is attached, and a connecting member 30. The side wall member 10 is connected by the connecting member 30. The side frame 21 has an engagement wall portion 23 extending in the vertical direction. The engagement wall portion 23 has an engagement portion 23a having a recessed rib 27 formed on one side and a protruding rib 28 formed on the other side, the engagement portion 23 being line-symmetrical with respect to an imaginary line L extending in the vertical direction of the engagement wall portion 23.

Therefore, when the side frames 21 of the two side wall members 10 are butted together and connected with the connecting member 30, the concave ribs 27 and convex ribs 28 of one engaging wall portion 23 can be held in an engaged state with the convex ribs 28 and concave ribs 27 of the other engaging wall portion 23. The two side wall members 10 can be positioned before connecting with the connecting member 30, making it easier to connect the side wall members 10 together. This allows the partition 1 to be assembled efficiently.

(2) When the two side wall members 10 are connected by the connecting member 30, the engaging portions 23a engage with each other in a concave-convex relationship.
Therefore, gaps are unlikely to form between adjacent side frames 21, and sound leakage from between adjacent side wall members 10 can be suppressed.

(3) The engagement wall portion 23 extends in the thickness direction of the sidewall member 10. In other words, when two sidewall members 10 are connected in a planar manner, the engagement wall portion 23 extends perpendicular to the main surface of each sidewall member 10.

Therefore, when two side wall members 10 are connected in a planar state, the engaging walls 23 of the side frames 21 can easily engage with each other.
(4) The grooves 27 and the protrusions 28 of the engaging portion 23a are formed in the same shape, with their cross sections being generally trapezoidal.

Therefore, when the engaging portions 23a are engaged with each other, a gap is unlikely to form between one engaging portion 23a and the other engaging portion 23a. Sound leakage from between adjacent side wall members 10 can be suppressed.

(5) A sidewall groove 29 extending in the vertical direction is formed on the outer surface of the sidewall portion 22 of the side frame 21. The portion other than the sidewall groove 29 is formed as a flat surface, and the width dimension of the sidewall groove 29 is formed slightly longer than the width dimension of the engagement portion 23a.

Therefore, the side wall recesses 29 formed on the side wall portions 22 of the side frames 21 can be engaged with the protrusions 28 formed on the engagement wall portions 23. The side wall portions 22 of the side frames 21 attached to one of the pair of side wall members 10 can be engaged with the engagement wall portions 23 of the side frames 21 attached to the other side wall member. This allows the two side wall members 10 to be positioned at right angles, facilitating the assembly work when connecting multiple side wall members 10 at right angles.

(6) When processing the side wall members 10, the side wall members 10 may be stacked flat without the sound absorbing material 2 attached, or side wall members 10 to be used without the sound absorbing material 2 attached may be stacked flat for storage. In this case, the weight of the upper side wall member 10 is applied to the side wall portion 22 of the side frame 21 of the lower side wall member 10.

In this regard, the side wall portion 22 of the side frame 21 is formed as a flat surface other than the side wall groove 29, so the load is received on the flat surface. This suppresses deformation of the side frame 21.

(7) The widthwise length of the side wall groove 29 is approximately equal to the width of the engaging portion 23a formed in the engaging wall portion 23. The side wall groove 29 is shaped like two grooves of approximately the same width as the groove 27 connected to each other at a position that is line-symmetrical with respect to an imaginary line M that extends vertically at the center of the widthwise direction of the side wall portion 22 on the inserted portion 26 side.

Therefore, even if the side frame 21 has the recess 27 on the right side of the engagement portion 23a and the protruding strip 28 on the left side, or the side frame 21 has the recess 27 on the left side and the protruding strip 28 on the right side, the side frame 21 can easily engage with the side wall recess 29. In other words, as shown in FIG. 13, since the width of the side wall recess 29 is approximately equal to the width of the engagement portion 23a, the side wall portion 22 of the side frame 21 of one side wall member 10 connected at a right angle and the engagement wall portion 23 of the other side frame 21 can be positioned so as to be flush with each other, regardless of whether the protruding strip 28 is located on the left or right side. In this case, if the protruding strip 28 of the engagement portion 23a of the side wall member 10 shown in the lower part of FIG. 13 is located to the left of the side wall recess 29 of the upper left side wall member 10, the side wall portion 22 of the lower side frame 21 and the engagement wall portion 23 of the upper left side frame 21 will not be flush with each other. The side wall portion 22 of the lower side frame 21 and the engagement wall portion 23 of the upper left side frame 21 are flush when the convex ridge 28 of the engagement portion 23a of the lower side wall member 10 is located to the right of the side wall concave ridge 29 of the upper left side wall member 10.

(8) When the engaging portions 23a of the engaging wall portion 23 engage with each other, the flat surfaces other than the engaging portions 23a come into contact with each other. Also, when the engaging portions 23a of the engaging wall portion 23 engage with the side wall grooves 29 of the side wall portion 22, the flat surfaces other than the engaging portions 23a and the side wall grooves 29 come into contact with each other.

As a result, gaps are unlikely to form between the side frames 21 of the side wall members 10 that are connected in a flat shape. Also, gaps are unlikely to form between the side frames 21 of the side wall members 10 that are connected at right angles. Sound leakage from inside the partition 1 can be suppressed.

(9) The inclined concave surface 27a of the concave strip 27 of the engaging portion 23a and the inclined convex surface 28a of the convex strip 28 are formed flush with each other.
Therefore, the engagement between the engagement portions 23a of the side frames 21 can be smoothly performed, and the partition 1 can be easily assembled.

(10) The inclination angle of the concave inclined surface 27a relative to the engaging wall portion 23 and the inclination angle of the convex inclined surface 28a relative to the engaging wall portion 23 are approximately equal. In addition, the inclination angle of the side wall concave inclined surface 29a relative to the side wall portion 22 are also approximately equal.

Therefore, the engagement of the engagement portion 23a with the side wall groove 29 of the side frame 21 is smooth, and the assembly work of the partition 1 is easy.
(11) The insertion portion 33 of the I-shaped connecting member 31 and the insertion portion 43 of the L-shaped connecting member 41 are formed in a U-shaped cross section. The same is true for the lower connecting member 30b, which has the same basic structure as the upper connecting member 30a.

Therefore, the amount of material required for the connecting member 30 can be reduced compared to when the insertion portions 33, 43 are tubular and have a rectangular cross section, which is advantageous in terms of cost.
(12) The frame member 20 is attached to the side wall member 10 in advance.

Therefore, the partition 1 can be assembled simply by connecting the connecting members 30. The partition 1 can be assembled easily.
(13) The sound absorbing material 2 is attached to the side wall member 10 in advance.

Therefore, the partition 1 having excellent sound absorbing properties can be easily assembled.
(14) When the I-shaped connecting member 31 is attached, the outer surface of the insertion portion 33 abuts against the inner surface of the inserted portion 26 of the side frame 21 .

Therefore, the insertion portion 33 of the I-shaped connecting member 31 is held without rattling within the inserted portion 26 of the side frame 21. This stabilizes the engagement state between the side frames 21 when they are butted together, and stabilizes the connection state between the side wall members 10. The same applies to the L-shaped connecting member 41 and the lower connecting member 30b.

(15) The side wall members 10 can be connected by the I-shaped connecting member 31 whether they are connected in a flat plane or at a right angle.
This reduces the number of necessary parts, which is advantageous in terms of cost.

(16) The side wall member 10 uses the hollow plate material 3 having a plurality of cells S arranged side by side therein.
Therefore, the side wall member 10 is lightweight and has appropriate rigidity, which makes it easy to transport and assemble.

(17) A plurality of communication holes 7 are formed in the first closing wall 3a of the hollow plate material 3. In addition, the sound absorbing material 2 is attached to the first closing wall 3a side.
Therefore, the sound generated in the internal space partitioned by the partition 1 is attenuated and absorbed not only by the sound-absorbing material 2 but also by the cells S of the hollow board material 3. Here, in the sound-absorbing material 2 formed of a porous material, the sound is absorbed by propagating through the air in the gaps of the porous material, and the vibration of the air is consumed as heat energy due to friction of the air, viscous resistance, etc. On the other hand, in the hollow board material 3 having multiple cells S, the air vibrates violently near the communication holes 7 that connect the inside and outside of the cells S, and the air frictions with the peripheral parts of the communication holes 7, and the vibration of the air is consumed as heat energy. In other words, the sound-absorbing material 2 and the hollow board material 3 absorb noise using different principles. By using sound absorption based on different principles in combination in this way, a sound absorption effect can be expected in a wide frequency range.

The above embodiment can be modified as follows: The embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs.
In the above embodiment, the partition 1 is assembled by connecting five side wall members 10, but the number of side wall members 10 and the shape of the partition 1 are not particularly limited. For example, a plurality of side wall members 10 may be connected only in a planar manner to be used as a partition. Also, a partition 1 may be assembled to form a rectangular parallelepiped or cubic closed space by connecting a plurality of side wall members 10 in a planar manner and at right angles.

- As shown in Figure 16, the side wall members 10 can be used as a single piece as a partition 1 without being connected. In this case, as shown in the enlarged perspective view on the left side of Figure 16, cap members 50 may be attached to the holding portions 25 and inserted portions 26 of the side frames 21, respectively. Also, as shown in the enlarged perspective view on the right side of Figure 16, I-shaped connecting members 31 may be attached to the holding portions 25 and inserted portions 26 of the side frames 21. The same applies to the lower portions of the holding portions 25 and inserted portions 26 of the side frames 21.

- As shown in FIG. 17(a), an engagement portion 23a may be formed instead of the side wall groove 29 on the side wall portion 22 of the side frame 21. Also, the side wall groove 29 may be formed on one side wall portion 22, and the engagement portion 23a may be formed on the other side wall portion 22. If the engagement portion 23a is formed on both side wall portions 22, when the sound absorbing material 2 is removed from the side wall members 10 and stored in a stacked state, the engagement portion 23a of the lower side wall member 10 can engage with the engagement portion 23a of the upper side wall member 10. This makes it difficult for the side wall members 10 to shift when stacked.

- As shown in FIG. 17(b), the shape and size of the side wall groove 29 of the side frame 21 may be the same as the shape and size of the groove 27 of the engagement portion 23a. In other words, the width of the side wall groove 29 may be approximately the same as the width of the protrusion 28.

- As shown in FIG. 17(c), the grooves 27 and protrusions 28 of the engagement portion 23a of the side frame 21 may be formed at positions spaced apart. In this case, too, if the grooves 27 and protrusions 28 are formed at positions that are line-symmetrical with respect to an imaginary line L extending vertically at the center of the width of the engagement wall portion 23, the two side wall members 10 can be connected in a planar manner.

In addition, when the grooves 27 and the protrusions 28 are formed at positions spaced apart, it is preferable that the side wall grooves 29 of the side wall portion 22 are formed at positions corresponding to the protrusions 28 when the engagement wall portion 23 and the side wall portion 22 are butted together, as shown in FIG. 17(c).

When the side wall groove 29 as shown in FIG. 17( c ) is formed, the side wall groove 29 may be formed in one place on one side wall portion 22 , or may be formed in two places.
As shown in Figures 17(d) to (f), the side wall portion 22 of the side frame 21 may not be planar, and the inserted portion 26 may be narrower than the holding portion 25. In this case, the inserted portion 26 may be formed in the center of the width of the holding portion 25 as shown in Figure 17(d). Also, as shown in Figure 17(e), it may be formed biased to one side in the width direction. Furthermore, as shown in Figure 17(f), it may be formed on the side wall portion 22 side. Even with these shapes, as long as the engaging portion 23a is formed on the engaging wall portion 23 of the inserted portion 26 and the side wall groove 29 is formed on the side wall portion 22, the side wall member 10 can be connected in a planar shape or at a right angle.

- As shown in FIG. 17(g), the engagement wall portion 23 may extend in a direction intersecting with the side wall portion 22. In other words, with the side frame 21 attached, it may extend in a direction intersecting with the thickness direction of the side wall member 10.

In the above embodiment, the grooves 27 and the protrusions 28 are formed to have a substantially trapezoidal cross section, but the shape is not limited to this.
The cross-sectional shapes of the grooves 27 and the protrusions 28 may be different from each other. If the cross-sectional shape of the grooves 27 is larger than the cross-sectional shape of the protrusions 28, one of the protrusions 28 can be accommodated within the other groove 27 when the engagement walls 23 are butted against each other.

- In the above embodiment, the width of the side wall groove 29 is approximately the same as or slightly longer than the width of the engagement portion 23a, but is not limited to this. It may be longer than the width of the engagement portion 23a. If it is not shorter than the width of the ridge 28, the ridge 28 can be accommodated.

- In the above embodiment, the outer surface of the engaging wall portion 23 is formed as a flat surface other than the engaging portion 23a, but this is not limited to this. A recess or groove may be formed other than the engaging portion 23a. If no protruding portion such as a convex portion or groove is formed, when the engaging portions 23a engage with each other, the engaging wall portions 23 come into contact with each other, making it difficult for gaps to form.

- In the above embodiment, the outer surface of the side wall portion 22 is formed as a flat surface other than the side wall groove 29, but this is not limited to this. In addition to the side wall groove 29, a recess or groove may be formed. If no protruding portion such as a convex portion or a convex groove is formed, when the engaging portion 23a and the side wall groove 29 engage, the side wall portion 22 and the engaging wall portion 23 come into contact with each other, making it difficult for a gap to form.

The mounting holes 22a of the side frames 21 are formed in a circular shape, but the shape is not particularly limited. The same is true for the mounting holes 36 of the I-shaped connecting members 31 and the mounting holes 46 of the L-shaped connecting members 41.

The mounting holes 22a of the side frame 21 are formed through both ends of the pair of side wall portions 22 in the vertical direction, but are not limited to this. For example, they may be formed at the upper end of one side wall portion 22 and the lower end of the other side wall portion 22.

The insertion portion 26 of the side frame 21 does not have to be formed over the entire length of the side frame 21. For example, it may be formed in two locations, the top and bottom of the side frame 21, in a cylindrical shape that extends in the vertical direction.

The insertion portions 33, 43 of the connecting member 30 do not have to have a U-shaped cross section. For example, the connecting walls 35, 45 may not exist and the insertion portions 33, 43 may be formed only by the side walls 34, 44. The insertion portions 33, 43 may also have a rectangular cross section.

The insertion portions 33, 43 of the connecting member 30 may be cylindrical with a circular cross section. In this case, if the insertion portions 33, 43 are formed to a size such that the cylindrical outer peripheral surface of the insertion portions 33, 43 abuts against the inner surface of the inserted portion 26 of the side frame 21, the connection state by the connecting member 30 will be stable.

- Although the connecting member 30 has been described as an I-shaped connecting member 31 with two insertion portions 33 and an L-shaped connecting member 41 with three insertion portions 43, other shapes are also possible. For example, the connecting member 61 shown in FIG. 18 has a shape in which four insertion portions 63 protrude from an upper wall portion 62 that is T-shaped when viewed from above. A connecting member 61 of this shape can connect four side wall members 10 in a cross shape.

- The I-shaped connecting member 31 has a pair of side walls 34 and a connecting wall 35 all of which have circular mounting holes 36, but there may be side walls 34 or connecting walls 35 that do not have mounting holes 36. The same applies to the L-shaped connecting member 41.

- Multiple sidewall members 10 may be connected only by the upper connecting member 30a, and the lower portions of the sidewall members 10 may not be connected by the lower connecting member 30b. In this case, for example, the lower portions of the sidewall members 10 may be connected by a hook-and-loop fastener or the like that is stretched between adjacent sidewall members 10.

- In the above embodiment, the lower connecting member 30b is an upper connecting member 30a to which the leg portion 30c and the connecting portion 30d are attached, but this is not limited to this. The upper connecting member 30a may also be used for the lower portion of the partition 1.

- The shape of the leg 30c of the lower connecting member 30b is not limited to that shown in FIG. 15. It may be formed as a rod-shaped member extending in the thickness direction of the sidewall member 10. With such a shape, the sidewall member 10 is stably supported when the sidewall members 10 are connected in a planar manner or when a single sidewall member 10 is used.

The insertion portion 52 of the cap member 50 has a pair of rectangular side walls 53 arranged in parallel, but is not limited to this. For example, the ends of the side walls 53 may be connected to each other. Also, the insertion portion 52 may be formed with a U-shaped cross section like the insertion portions 33.43 of the I-shaped connecting member 31 and the L-shaped connecting member 41. With such a shape, deformation of the insertion portion 52 is suppressed.

- In the above embodiment, the cap member 50 is attached to the holding portion 25 and the inserted portion 26 that open to the upper portion of the side frame 21, to which the connecting member 30 is not attached. In addition, the cap member 50 may be attached to the holding portion 25 and the inserted portion 26 that open to the lower portion of the side frame 21.

- The side wall member 10 has the side frame 21, upper and lower frames 20a, and sound absorbing material 2 attached in advance, but each may be provided separately. Each member may be attached to the hollow plate material 3 prior to the assembly work.

The sound absorbing material 2 may be made detachable. In this way, the sound absorbing material 2 can be easily replaced when it becomes dirty.
In the above embodiment, the sound absorbing material 2 is attached to the first blocking wall 3a side. However, the sound absorbing material 2 may be attached to both the first blocking wall 3a and the second blocking wall 3b.

The upper and lower frames 20a do not have to be attached. In this case, for example, if strip-shaped sealing members are attached to the upper and lower end faces of the hollow plate material 3, the intrusion of dust, dirt, etc. into the cells S inside the hollow plate material 3 is suppressed.

The side frames 21 and the upper and lower frames 20a may be attached by, for example, screws or adhesive.
The upper and lower frames 20a are attached so as to cover the upper and lower sides of the hollow plate material 3, but this is not limited thereto.

- In order to maintain the rigidity of the partition 1, frame members such as diagonal braces may be attached.
A handle may be attached to the side wall member 10. This makes it easier to transport the unit during assembly work.

- Other sheet materials may be joined to the outer surface of the hollow plate material 3. Examples of sheet materials include metal sheets (metal foils), steel plates, paper, and cloth. The skin layer 6 itself may also be made of metal sheets (metal foils), paper, and cloth.

In the above embodiment, the side wall member 10 is formed of the hollow plate material 3 as a hollow structure. However, the side wall member 10 does not have to be a hollow structure.
The hollow plate material 3 is not limited to a plate material in which the core layer 4 is formed by folding and molding one piece of the first sheet material 100, but may be a plate material in which the core layer 4 is formed by using a plurality of sheet materials.

The shape of the cells S in the hollow plate material 3 is not limited to a hexagonal prism. For example, the shape of the cells S may be a square prism or a cylinder. Cells S of different shapes may be mixed. Furthermore, in the hollow plate material 3, adjacent cells S may not only be in contact with each other, but there may be a gap between two adjacent cells S. If there is a gap between the cells S, in addition to the communication hole 7 that connects the inside and outside of the cells S, a communication hole that connects the inside and outside of the space between the cells S may be provided.

- In the hollow plate material 3, multiple communication holes 7 may be provided for one cell S. Also, the communication holes 7 do not have to be provided for all cells S, and may be provided for some of the cells S. It is also possible that no communication holes 7 are provided.

- Sound absorbing material 2 may be omitted.

L: imaginary line 10: side wall member 21: side frame 22: side wall portion 23: engaging wall portion 23a: engaging portion 25: holding portion 26: inserted portion 27: groove 27a: groove inclined surface 28: convex portion 28a: convex inclined surface 29: side wall groove 30: connecting member 30a: upper connecting member (connecting member)
30b...Lower connecting member 31...I-shaped connecting member (connecting member)
32, 42, 62: Upper wall portion 33, 43, 63: Insertion portion 41: L-shaped connecting member (connecting member)
61...Connecting member

Claims (6)

A partition assembly kit including a plurality of side wall members each formed by attaching a long side frame to each of a pair of vertically extending side edges of a rectangular plate material, and a connecting member for connecting the plurality of side wall members,
The side frame has a groove-shaped holding portion that receives the side edge, and a cylindrical insertion portion that is integrally connected to the holding portion and opens upward and downward,
the connecting member has an upper wall portion that covers the inserted portions of each of the side frames from above in a state in which the inserted portions of the side frames attached to the plurality of side wall members are butted against each other, and a plurality of insertion portions that protrude downward from the upper wall portion and are inserted into the inserted portions of the respective side frames,
The inserted portion has an engagement wall portion extending in a vertical direction,
The engaging wall portion is formed with an engaging portion extending in a vertical direction,
A partition assembly kit characterized in that the engagement portion consists of a concave strip formed on one side and a convex strip formed on the other side, the engagement portion being symmetrical with respect to an imaginary line extending in the vertical direction of the engagement wall portion. The partition assembly kit according to claim 1, characterized in that the engagement wall portion extends in the thickness direction of the side wall member. The partition assembly kit according to claim 1 or 2, characterized in that the concave and convex strips are formed to have the same cross-sectional shape. the insertion portion has a pair of side wall portions extending in a direction along a main surface of the side wall member, and the engagement wall portion connecting tips of the pair of side wall portions to each other,
A sidewall groove extending in a vertical direction is formed on an outer surface of the sidewall portion, and a portion other than the sidewall groove is formed as a flat surface,
The partition assembly kit according to any one of claims 1 to 3, characterized in that the width dimension of the side wall concave strip is equal to or greater than the width dimension of the convex strip. A concave inclined surface is formed on the imaginary line side of the concave stripe, the concave inclined surface being inclined with respect to the outer surface of the engagement wall portion, and a convex inclined surface is formed on the imaginary line side of the convex stripe, the convex inclined surface being inclined with respect to the outer surface of the engagement wall portion,
The partition assembly kit according to any one of claims 1 to 4, characterized in that the concave inclined surface and the convex inclined surface are formed flush with each other. The partition assembly kit according to any one of claims 1 to 5, characterized in that the insertion portion is formed in a U-shaped cross section.

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