JP2024005313A - Partition and space compartment structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a partition with excellent sound insulation performance without increasing thickness of the partition, and a space compartment structure formed by this partition.

SOLUTION: There is provided a partition 50, which is placed between a floor 61 and a ceiling 62 of interior space 60, having a partition wall 10 erected over a floor 61 to divide the interior space 60 and an overhang piece 20 that extends from the top of the partition wall 10 to a side.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to partitions and space partitioning structures.

In offices, offices, stores, etc., partitions are installed to divide the floor into a plurality of booths, and measures are sometimes taken to prevent or prevent conversations in each booth from leaking to other booths. Partitions can be fixed to the floor or can be moved freely using casters, but regardless of the format, multiple booths can be arranged in various ways by applying partitions. The floor can be provided with a space partitioning structure. Furthermore, by moving each partition, it becomes possible to rearrange the floor relatively easily.

In conventional partitions, in order to improve sound leakage reduction performance or sound insulation performance, it has been proposed that a sound absorbing material is provided inside or on the surface of the partition. For example, the partition described in Patent Document 1 includes a flat main body, and the main body has a first region and a higher sound absorption coefficient than the first region, and is erected on the floor. and a second area provided at a position closer to the floor surface than the first area when the first area is moved. The main body has a sound-absorbing material and a pair of surface members that sandwich the sound-absorbing material, and the surface member is made of steel plate, punched metal, etc., the sound-absorbing material is glass wool, and the sound absorbing material is made of glass wool. Sound is absorbed by sound-absorbing materials.

Japanese Patent Application Publication No. 2012-188904

Conventional partitions, including the partition described in Patent Document 1, generally have a sound-absorbing material applied to a flat core material, or a sound-absorbing material provided on the surface of a flat core material. be. By the way, the sound range of speech is generally said to be about 125 Hz to 500 Hz, which belongs to the low frequency range, but the sound-absorbing materials that are conventionally used in the thickness (about 5 cm at most) have high sound absorption performance in the speech range of conversation. It can not be said. Therefore, if an attempt is made to apply a sound absorbing material thick enough to absorb low-frequency sounds to the partition, the thickness of the partition will become too thick, which is undesirable because it may affect the space of the booth.

The present invention has been made in view of the above problems, and aims to provide a partition that has excellent sound insulation performance without increasing the thickness of the partition, and a space division structure formed by this partition.

In order to achieve the above object, one aspect of the partition according to the present invention is:
A partition placed between the floor and ceiling of an indoor space,
a partition wall erected on the floor to partition the indoor space;
It is characterized by having an overhanging piece that overhangs laterally from above the partition wall.

According to this aspect, by having the overhang piece that overhangs laterally from above the partition wall installed on the floor, the sound emitted from one side of the partition wall (the booth, etc.) is transmitted from above the partition wall to the partition wall. It is possible to increase the propagation path length (or detour length) when propagating to the other side (booth, etc.). In this way, by increasing the length of the audio propagation path, it becomes possible to reduce the audio (or volume). In other words, the partition of this embodiment changes the technical concept of improving sound insulation performance by absorbing sound with a sound absorbing material, and improves sound insulation performance by reducing sound while the sound propagates through the longest possible propagation path. It is a technical philosophy that enhances

Here, "overhanging from the top of the partition to the sides" refers to not only the form in which the overhang pieces overhang to the sides from the top of the partition, but also the position where the overhang pieces hang downward from the top of the partition (halfway above the partition). This includes a form in which the overhanging piece overhangs laterally from the position (position).

Furthermore, for example, in addition to the form in which one overhang piece overhangs to one side of the wide side of the partition wall, there is also a form in which a plurality of overhang pieces (for example, two) overhang to the side at intervals in the vertical direction. You can. For example, in a configuration in which two (two stages) overhanging pieces in a vertical relationship extend laterally, the length of the sound propagation path becomes even longer, and the sound insulation performance is further improved.

The partition walls constituting the partition have, for example, a flat plate shape, but from the viewpoint of ensuring a stable standing posture, the legs may widen toward the floor surface. It may also be movable, with casters etc. installed at the lower end of the bulkhead, but if there is a gap at the lower end of the bulkhead, sound leaks through this gap, so the casters are not suitable for the bulkhead. It is desirable to be rotatably embedded inside from the lower end, with a portion of the casters slightly exposed downward, so that it can be moved freely while suppressing sound leakage.

Further, other aspects of the partition according to the present invention include:
It is characterized in that a sound absorbing material is installed on the overhang piece.

According to this aspect, by installing the sound-absorbing material on the overhanging piece, in addition to the sound reduction effect due to the length of the sound propagation path lengthened by the overhanging piece, the sound-absorbing effect of the sound-absorbing material is added. This allows the sound insulation performance to be further improved. In addition, since the sound absorbing material can be placed above the side projecting pieces, there is no fear that the sound absorbing material will increase the thickness of the partition wall and affect the space of the booth. The sound absorbing material may be simply placed above the overhang, but it may also be fixed to the top of the overhang using an adhesive or placed upward from the top of the overhang. A configuration in which the sound absorbing material is fixed by being pierced by a protruding piercing member or the like is preferable because it is possible to prevent the sound absorbing material from shifting at the top end of the overhanging piece or falling from the top end.

Further, other aspects of the partition according to the present invention include:
At least a portion of the overhanging piece is inclined upward, curved upward, or bent upward, so that the sound absorbing material is housed inside the overhanging piece. Features.

According to this aspect, since at least a portion of the overhang piece has a shape that accommodates the sound absorbing material, such as being inclined upward, the sound absorbing material can be accommodated in the accommodation space of the overhang piece. The sound absorbing material can be placed above the overhanging piece in a stable state by preventing the sound absorbing material from shifting or falling.

Further, other aspects of the partition according to the present invention include:
The overhanging piece is characterized in that it overhangs from the partition wall in two directions, right and left.

According to this aspect, since the overhanging piece overhangs from the partition wall in two directions, left and right, the length of the sound propagation path is longer than that in a case where the overhanging piece overhangs from the partition wall in one direction, either left or right. Since the length is even longer, the sound insulation performance is further improved.

For example, since an accommodation space with a triangular cross section is formed by the overhanging pieces that are inclined diagonally upward in two directions, a triangular prism-shaped sound absorbing material can be applied to be accommodated in this triangular accommodation space. Furthermore, in the case of a box-shaped structure with an open top, in which projecting pieces extend horizontally in two directions, a horizontally elongated rectangular column-shaped sound absorbing material can be applied.

Further, other aspects of the partition according to the present invention include:
The thickness of the sound absorbing material is in a range of 15 cm to 70 cm.

According to this aspect, since the thickness of the sound absorbing material is in the range of 15 cm to 70 cm, the sound can be effectively absorbed by the sound absorbing material. Since the thickness of the sound absorbing material is in the range of 15 cm to 70 cm, it is much thicker than conventional general sound absorbing materials, but since the sound absorbing material is placed above the overhanging piece, the sound absorbing material There is no need to worry about increasing the thickness of the bulkhead and affecting the space in the booth.

Moreover, one aspect of the space division structure according to the present invention is
A space division structure in which an indoor space is divided into a plurality of sections by partitions,
The partition according to any one of claims 1 to 5 is installed on the floor of the indoor space,
The present invention is characterized in that an effective opening height for smoke evacuation is ensured between the ceiling of the indoor space and the top end of the partition.

According to this aspect, the partition of the present invention is installed on the floor of the indoor space, and an effective open height for smoke exhaust is ensured between the ceiling of the indoor space and the top of the partition. It is possible to form a spatial partition structure with high sound insulation performance while forming a legal smoke-proof partition. For example, according to the provisions of Article 126-2, Paragraph 1 of the Construction Order of the Building Standards Act, the upper part of the partition wall must be 50 cm from the ceiling surface to satisfy the condition that the upper part of the partition wall is effectively open for smoke exhaust. It is stipulated that the following areas shall be open at all times. Therefore, for example, 50 cm (or more) can be defined as the "effective opening height for smoke evacuation." In addition, since there are other similar provisions in the Fire Service Act, it is preferable to set the "effective opening height for smoke exhaust" based on the standards of both the Building Standards Act and the Fire Service Act, for example.

In this aspect, if the sound absorbing material is not placed on the overhang, the overhang is installed so that an effective open height for smoke exhaust is secured between the top surface of the overhang and the ceiling surface. The position is set. On the other hand, in the case where the sound absorbing material is placed on the overhanging piece, the installation position of the overhanging piece and the sound absorption The thickness of the material is set.

As can be understood from the above description, according to the partition and space division structure of the present invention, it is possible to provide a partition and space division structure with excellent sound insulation performance without increasing the thickness of the partition.

FIG. 2 is a perspective view of an example of a partition according to the first embodiment. FIG. 7 is a perspective view of another example of the partition according to the first embodiment. FIG. 7 is a perspective view of still another example of the partition according to the first embodiment. It is a perspective view of an example of the partition concerning a 2nd embodiment. FIG. 3 is a diagram showing a waveform of a sound wave for explaining a method of setting the thickness of a sound absorbing material. (a), (b), and (c) are all front views of other examples of the partition according to the second embodiment. FIG. 2 is a side view of an example of a space division structure according to the first embodiment. FIG. 7 is a side view of an example of a space division structure according to a second embodiment.

Partitions and space division structures according to each embodiment will be described below with reference to the accompanying drawings. Note that in this specification and the drawings, substantially the same constituent elements may be given the same reference numerals to omit redundant explanation.

[Partition according to embodiment]
<First embodiment>
First, multiple examples of partitions according to the first embodiment will be described with reference to FIGS. 1 to 3. Here, each of FIGS. 1 to 3 is a perspective view of an example of a partition according to the first embodiment.

The partition 50 shown in FIG. 1 is a partition arranged between the floor and ceiling of an indoor space, and includes a partition wall 10 that is erected on the floor and partitions the indoor space, and a partition wall 10 that extends from the upper side 13 of the partition wall 10. It has an overhang piece 20 that overhangs toward the side. In the partition 50, the upper part of the partition wall 10 is the upper end, but the overhanging piece may extend laterally from a position lowered from the upper end.

The partition wall 10 is a wall whose wide surfaces 11A and 11B are rectangular in plan view, and forms individual booths on the wide surface 11A side and the wide side 11B side. The partition wall 10 is a solid wall that does not easily transmit sound, and may be made of an inorganic board, a wooden board, a metal board, a resin board, or the like.

Inorganic boards include gypsum boards, calcium silicate boards, cement boards, and the like. Wood-based boards include structural plywood, solid wood, laminated wood, laminated veneer lumber (LVL), cross laminated timber (CLT), and the like. Metal boards include aluminum plates, steel plates, and the like. Resin boards include boards made of polyethylene, polypropylene, polystyrene, polyvinyl chloride, ethylene-vinyl acetate copolymer, polyurethane, thermoplastic elastomer, synthetic rubber, and the like. Alternatively, it may be a hybrid board in which two or more of an inorganic board, a wood board, a metal board, and a resin board are laminated in the thickness direction. Regardless of which material is used, the thickness of the partition wall 10 only needs to be set to such a thickness that the sound does not propagate or is difficult to propagate, and there is no need to set the thickness to be excessively thick.

On the other hand, the overhanging piece 20 may also be formed of a plate made of the same material as the partition wall 10. Although not shown, the overhang piece 20 may be placed on the upper end of the partition wall 10 and fixed with screws, nails, screws, bolts, etc. For example, the overhang piece 20 and the partition wall 10 may be made of the same metal. When made of resin, the entire partition 50 may be manufactured by integral molding.

In the partition 50, one projecting piece 20 is fixed to the upper end 13 of the partition wall 10 in such a manner that it projects evenly in two directions, right and left, and has a T-shape when viewed from the front. The height of the partition wall 10 is t1, and the length of the projecting piece 20 extending in two directions from the upper end 13 of the partition wall 10 is t3. Further, when the indoor space is divided into two spaces (booths) on the wide side 11A side and the wide side 11B side of the partition wall 10, the height position P1 in the space on one side is the conversation position of multiple booth users. (voice transmission position), and the height position P2 in the space on the other side is the position of the user who does desk work in the booth. Here, the lengths of the right and left sides of the overhang piece 20 may be different.

A conventional common partition has only a partition wall and does not have an overhang piece 20 as shown in FIG. Therefore, if the sound emitted at the height position P1 in the space on one side does not propagate horizontally through the partition wall, it will go around the top of the partition wall and reach the height position P2 in the space on the other side, as shown by the dotted line. The length of the propagation path is 2×t2.

On the other hand, in the partition 50, since there is an overhang piece 20 extending in two directions at the upper end 13 of the partition wall 10, the sound propagation path changes direction at the upper end 13 of the partition wall 10 and starts from the lower surface of the overhang piece 20. The propagation path of X1, shown by a solid line, is traced around the top end 21, passing through the width of the top end 21: 2×t3, and reaching the height position P2 in the space on the other side. The length of this propagation path is about 2×t2+3×t3, and the propagation path length is increased by at least the length of the overhang of the overhang piece 20 or more. In reality, as shown in FIGS. 7 and 8 below, since the sound is propagated while being reflected alternately between the ceiling and the overhanging piece, the length of the propagation path becomes even longer.

In this way, by increasing the length of the audio propagation path, it becomes possible to reduce the audio (or volume). That is, the partition 50 is a partition that exhibits sound insulation performance by reducing the sound while the sound propagates through the longest possible propagation path, unlike a partition that absorbs sound using a sound-absorbing material. In addition, in the partition 50, the thickness of the partition wall 10 only needs to be set to a thickness that can block transmitted sound, and there is no need to make it excessively thick. There is no fear that the booth space will be affected.

Here, the partition 50 has one overhang piece (one stage) overhanging piece 20 that overhangs on the left and right sides of the partition wall 10. For example, below the overhang piece 20, a second stage of separate overhang piece is attached to the partition wall. It may be fixed to either or both the left and right sides of 10 (not shown). According to this form, it is possible to further increase the length of the audio propagation path.

The partition 50A shown in FIG. 2 has an overhang piece 20A having a relatively longer overhang length than the partition 50.

In this way, by having the overhang piece 20A with a long overhang length, the length of the sound propagation path from one booth to the other booth can be further increased, and the sound insulation performance can be further improved. .

The partition 50B shown in FIG. 3 has an overhanging piece 20B that overhangs from the upper end 13 of the partition wall 10 to only one left or right side.

According to the partition 50B, although the length of the audio propagation path from one booth to the other booth is shorter than that of the partition 50, the length of the audio propagation path from one booth to the other is longer than that of a conventional partition having only a partition wall. In addition, since the size of the overhanging piece 20B is 1/2 that of the partition 50, the material cost can be reduced, and the manufacturing cost of the partition can be reduced.

<Second embodiment>
Next, multiple examples of partitions according to the second embodiment will be described with reference to FIGS. 4 to 6. Here, FIG. 4 is a perspective view of an example of a partition according to the second embodiment. Moreover, FIG. 5 is a diagram showing the waveform of a sound wave for explaining the method of setting the thickness of the sound-absorbing material, and FIGS. 6(a), (b), and (c) are all in accordance with the second embodiment. FIG. 3 is a front view of another example of such a partition.

The partition 50C shown in FIG. 4 differs from the partition 50 in that a sound absorbing material 30 is placed on the top end 21 of the overhanging piece 20 of the partition 50 shown in FIG. Hereinafter, each of the partitions shown in FIGS. 4 to 6 is a partition in which the length of the sound propagation path is lengthened by an overhanging piece, and in addition, sound absorbing performance is added by using a sound absorbing material.

In the partition 50C, the sound absorbing material 30 may be simply placed on the top end 21 of the overhang piece 20, but from the viewpoint of preventing the sound absorbing material from shifting laterally or falling, Preferably, the material 30 is fixed using an adhesive or double-sided tape, or a projection protrudes upward from the top end 21 of the overhanging piece 20, and the sound absorbing material 30 is stuck into the projection and fixed.

As the sound absorbing material 30, in addition to glass wool, porous sound absorbing materials such as urethane, polyurethane foam, melamine foam, sponge, felt, nonwoven fabric (polypropylene nonwoven fabric, etc.), fibrous sound absorbing material, etc. can be used.

The thickness of the sound absorbing material 30: t4 is set to a thickness that allows the sound absorbing material 30 to effectively absorb the low frequency range of 125 Hz to 500 Hz, which is the sound range of conversational voices.

Frequency: f is the speed of sound: v is 340 m/sec, wavelength: λ is from the relationship λ = v/f, and the length of one wavelength shown in Figure 5 in the case of 125 Hz is 340 ÷ 125 = 2.72 m. Therefore, the length of one wavelength in the case of 500 Hz is 340÷600=0.68 m.

If a sound absorbing material absorbs from the point of zero sound pressure to the peak of the sound, it only needs to have a thickness of 1/4 wavelength, which is the length to the peak of the sound, and in the case of 125 Hz, it is 272 cm ÷ 4=68cm, and in the case of 500Hz, 68cm÷4=17cm.

Therefore, in the partition 50C, the thickness: t4 of the sound absorbing material 30 is set in the range of 15 cm to 70 cm. Note that, considering that the thickness of the sound absorbing material applied to conventional partitions is approximately 5 cm at most, the thickness of the sound absorbing material 30 becomes significantly thicker.

However, in the partition 50C, since the sound absorbing material 30 is placed on the top end 21 of the overhanging piece 20, there is no fear that the sound absorbing material increases the thickness of the partition wall and affects the space of the booth.

According to the partition 50C, since the sound absorbing material 30 is installed on the overhanging piece 20, in addition to the sound reduction effect due to the length of the sound propagation path length by the overhanging piece 20 being increased, the sound absorption material 30 also reduces the sound. It has a sound absorption effect and can further improve sound insulation performance.

FIG. 6 shows three types of partitions. In all of these partitions, the shape of the overhanging piece is improved so that a sound absorbing material can be housed inside the overhanging piece.

The partition 50D shown in FIG. 6(a) is provided with an overhanging piece 20C that is inclined upwardly in two directions, right and left, from the upper end of the partition wall 10, and is complementary to a triangular storage space in front view formed by the overhanging piece 20C. A triangular prism-shaped sound absorbing material 30A having a shape when viewed from the front is accommodated.

Here, for example, the thickness of the center of the sound absorbing material 30A: t5 is set in the range of 15 cm to 70 cm.

According to the partition 50D, even when the sound absorbing material 30A is simply placed on the overhanging piece 20C, it is possible to prevent the sound absorbing material 30A from shifting laterally or falling from the overhanging piece 20C.

The partition 50E shown in FIG. 6(b) is provided with a semicircular overhanging piece 20D that is open upward in a front view at the upper end of the partition wall 10, and is complementary to the semicircular storage space formed by the overhanging piece 20D. A semi-cylindrical sound absorbing material 30B having a shape when viewed from the front is accommodated.

Here, for example, the radius thickness t6 of the sound absorbing material 30B is set in a range of 15 cm to 70 cm.

The partition 50E can also prevent the sound absorbing material 30B from shifting laterally or falling from the overhanging piece 20D when the sound absorbing material 30B is simply placed on the overhanging piece 20D.

The partition 50F shown in FIG. 6(c) is provided with a U-shaped overhanging piece 20E that opens upward in front view at the upper end of the partition wall 10, and has a U-shaped accommodation space formed by the overhanging piece 20E. A square columnar sound absorbing material 30C having a complementary shape when viewed from the front is housed in the housing.

Here, for example, the thickness t7 of the sound absorbing material 30C is set in the range of 15 cm to 70 cm.

The partition 50F can also prevent the sound absorbing material 30C from shifting laterally or falling from the overhanging piece 20E when the sound absorbing material 30C is simply placed on the overhanging piece 20E.

The partitions 50D, 50E, and 50F also provide a sound reduction effect due to the lengthening of the sound propagation path by the overhanging pieces 20C, 20D, and 20E, as well as a sound absorption effect by the sound materials 30A, 30B, and 30C. It is possible to further improve the sound insulation performance.

[Space division structure according to embodiment]
<First embodiment>
Next, an example of the space division structure according to the first embodiment will be described with reference to FIG. 7. Here, FIG. 7 is a side view of an example of the space division structure according to the first embodiment.

An indoor space 60 is formed between a floor 61 and a ceiling 62 on an arbitrary floor of an office building. A space division structure 70 is formed by dividing this indoor space 60 into two left and right booths 60B and 60A by a partition 50A shown in FIG. Here, two or more partitions 50A may be installed in the indoor space 60 to form three or more booths, or the partitions 50 and 50B shown in FIGS. 1 and 3 may be applied. However, two or more types of partitions 50, 50A, and 50B may be installed on the same floor.

An effective opening height: t8 is ensured between the top end 21 of the overhanging piece 20A and the ceiling 62 for smoke evacuation. The effective opening height t8 for smoke exhaust is set to 50 cm or more based on the provisions of the Building Standards Act (including the Building Standards Act Enforcement Order, etc.) and the Fire Service Act.

For example, a situation will be described in which a plurality of people (two people in the illustrated example) are having a conversation in the booth 60A, and the sounds emitted during the conversation are propagated to the people in the booth 60B across the partition 50A.

The sound emitted by the booth 60A goes around the overhang piece 20A and is propagated to the space between the ceiling 62 and the top end 21 of the overhang piece 20A. In this space, the sound passes through the space via a propagation path X2 that alternately reflects against the ceiling 62 and the top 21, and is propagated to the person in the booth 60B.

In the space division structure 70, the overhanging piece 20A of the partition 50A increases the length of the sound propagation path, thereby effectively reducing the sound. Therefore, the space division structure 70 forms a legal smoke-proof division and has a high sound insulation performance.

<Second embodiment>
Next, an example of the space division structure according to the second embodiment will be described with reference to FIG. 8. Here, FIG. 8 is a side view of an example of the space division structure according to the second embodiment.

The space division structure 70A is different from the space division structure 70 in that it includes a partition 50G in which a sound absorbing material 30D is placed on the top end 21 of the overhanging piece 20A of the partition 50A that constitutes the space division structure 70.

An effective opening height: t9 is ensured between the top end 31 of the sound absorbing material 30D and the ceiling 62 for smoke evacuation. The effective opening height for smoke evacuation: t9 is set to 50 cm or more as described above.

The sound emitted by the booth 60A goes around the overhanging piece 20A and the sound absorbing material 30D, and is propagated to the space between the ceiling 62 and the top end 31 of the sound absorbing material 30D. In this space, the sound passes through the space via a propagation path X3 that is alternately reflected against the ceiling 62 and the top 31, and is propagated to the person in the booth 60B.

In the space division structure 70A, the sound propagation path length is increased by the overhanging piece 20A of the partition 50G, and the sound is absorbed by the sound absorbing material 30D, so that the sound is effectively reduced. Therefore, the space division structure 70A forms a legal smoke-proof division and is a space division structure with high sound insulation performance.

It should be noted that other embodiments may be adopted in which other components are combined with the configurations listed in the above embodiments, and the present invention is not limited to the configurations shown here. In this regard, changes can be made without departing from the spirit of the present invention, and can be appropriately determined depending on the application form.

10: Partition 11A, 11B: Wide side 12: Leg 13: Upper end (upper)
20, 20A, 20B, 20C, 20D, 20E: Overhang piece 21: Top end 30, 30A, 30B, 30C, 30D: Sound absorbing material 31: Top end 50, 50A, 50B, 50C, 50D, 50E, 50F, 50G: Partition 60: Indoor space 61: Floor 62: Ceiling 60A, 60B: Booth 70, 70A: Space division structure

Claims (6)

A partition placed between the floor and ceiling of an indoor space,
a partition wall erected on the floor to partition the indoor space;
A partition characterized by having an overhang piece that overhangs laterally from above the partition wall. The partition according to claim 1, characterized in that a sound absorbing material is installed on the overhang piece. At least a portion of the overhanging piece is inclined upward, curved upward, or bent upward, so that the sound absorbing material is housed inside the overhanging piece. 3. Partition according to claim 2, characterized in that: 4. The partition according to claim 3, wherein the overhanging piece overhangs from the partition wall in two directions, right and left. Partition according to claim 2, characterized in that the thickness of the sound absorbing material is in the range of 15 cm to 70 cm. A space division structure in which an indoor space is divided into a plurality of sections by partitions,
The partition according to any one of claims 1 to 5 is installed on the floor of the indoor space,
A space division structure characterized in that an effective opening height for smoke evacuation is ensured between the ceiling of the indoor space and the top end of the partition.

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