Panel body and partition device

Abstract

To provide a panel body having excellent sound absorbing property and design property.SOLUTION: A panel body 11 comprises: a first face material 12A; a first cushion material 13A provided along an outer surface 12Aa of the first face material 12A; and a sound-absorbing material 60 arranged at the opposite side to the first cushion material 13A across the first face material 12A. A first through hole 18 is formed in the first face material 12A at a location between the first cushion material 13A and the sound absorbing material 60.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a panel body and a partitioning device.

Background Art

[0002] In spaces such as offices, public facilities, and commercial facilities, it is required to increase the degree of freedom in space utilization by partitioning a part of the large space formed in the facility into small spaces. Therefore, it is widely practiced to provide a partitioning device (partition) composed of panel bodies installed on the floor surface in the space. By providing the partitioning device, the line of sight and sound from the surroundings can be blocked to some extent.

[0003] Patent Document 1 discloses a panel having, as a sound-absorbing panel body, a base material formed of a hollow resin plate, a sound-absorbing plate having the same size as the base material when viewed from the normal direction of the surface and laminated on the base material, and a sound-absorbing plate cover portion that covers the surface exposed on the side opposite to the base material side of the sound-absorbing plate and has the property of allowing sound to pass through.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in recent years, it has been desired to improve the designability by adding accents to the outer surface of the panel body while suppressing a decrease in sound absorption with respect to the conventional panel body. However, the panel body described in Patent Document 1 is not assumed to add accents to the outer surface, and if unevenness is provided on the sound-absorbing material, the sound absorption may decrease as the volume of the sound-absorbing material decreases.

[0006] Therefore, the present invention provides a panel body excellent in sound absorption and design, and a partition device including the panel body.

Means for Solving the Problems

[0007] The panel body according to the first aspect of the present invention includes a first face material, a cushion material provided along at least a part of the first main surface of the first face material, and a sound absorption material disposed on the opposite side of the cushion material sandwiching the first face material, and a first through hole is formed in a portion between the cushion material and the sound absorption material in the first face material.

[0008] According to the first aspect, when sound enters the panel body from the first main surface side of the first face material, a part of the sound passes through the cushion material, then passes through the first through hole of the first face material without being reflected by the first face material, and is absorbed after passing through the sound absorption material. Therefore, it is possible to improve the sound absorption effect of the panel body without increasing the thickness of the cushion material in order to enhance the sound absorption effect on the sound incident on the panel body from the first main surface side of the first face material. In addition, since the degree of freedom in setting the thickness of the cushion material is improved, it is possible to form a panel body excellent in design, such as providing unevenness on the outer surface of the panel body by changing the thickness of the cushion material. Furthermore, since the strength of the panel body can be ensured by the first face material, the mechanical strength required for the cushion material and the sound absorption material can be suppressed. Therefore, it is possible to select various materials as the cushion material and the sound absorption material.

[0009] The panel body according to the second aspect of the present invention is the panel body according to the first aspect, and is installed in a state of standing on the floor surface, and the first through hole may be formed only in a part of the first face material in the vertical direction.

[0010] According to the second aspect, by providing the first through-hole near the height of the user's head in the panel body, it becomes easier to absorb the sound emitted by the user. Further, it is possible to suppress the sound other than the sound emitted by the user from being reflected at a location near the height of the user's head in the panel body and reaching the user. Furthermore, by not providing the first through-hole in a location far from the user's head in the panel body, it is possible to surely block the sound reaching from the opposite side of the user across the panel body by the panel body. Therefore, a panel body capable of providing a quiet environment for the user can be obtained.

[0011] The panel body according to the third aspect of the present invention is the panel body according to the first aspect or the second aspect, further comprising a skin material covering the cushion material, and a part of the skin material may be directly joined to the first facing material.

[0012] According to the third aspect, the cushion material between the first facing material and the skin material can be held by the mutually joined first facing material and skin material. Therefore, the degree of freedom in designing the material and shape of the cushion material can be further improved. Further, it is also possible to join the skin material to the first facing material in a state where the cushion material is compressed, and it is possible to form soft unevenness on the outer surface of the panel body.

[0013] The panel body according to the fourth aspect of the present invention may further include a second facing material disposed on the opposite side of the first facing material sandwiching the sound-absorbing material in the panel body according to any one of the first aspect to the third aspect.

[0014] According to the fourth aspect, the sound incident on the sound-absorbing material through the first through-hole can be reflected by the second facing material. Thereby, it is possible to suppress the sound incident on the panel body from the first main surface side of the first facing material from passing through the panel body, and to obtain a panel body with less sound leakage. Further, the sound incident on the sound-absorbing material can be repeatedly reflected between the first facing material and the second facing material and transmitted through the sound-absorbing material, and it is possible to surely absorb the sound by the sound-absorbing material.

[0015] The panel body according to the fifth aspect of the present invention is the panel body according to the fourth aspect, wherein a second through hole is formed in the second facing material, and the first through hole and the second through hole may be provided so as not to overlap each other when viewed from the thickness direction of the first facing material.

[0016] According to the fifth aspect, when sound is incident on the panel body from the side opposite to the first main surface of the first facing material, a part of the sound passes through the second through hole of the second facing material without being reflected by the second facing material and is absorbed by passing through the sound absorbing material. Therefore, a panel body with a high sound absorption effect for sound incident from both sides can be obtained. Moreover, since the first through hole and the second through hole are provided so as to be displaced from each other when viewed from the thickness direction of the first facing material, the distance from one of the first through hole and the second through hole to the other becomes long. Thereby, the volume of the sound passing through one of the first through hole and the second through hole and coming out from the other can be reduced, and a panel body with less sound leakage can be obtained.

[0017] The panel body according to the sixth aspect of the present invention is the panel body according to any one of the first aspect to the fifth aspect, and forms a booth surrounding a space, and the first main surface of the first facing material may face the inside of the booth.

[0018] According to the sixth aspect, the sound emitted from the inner space of the booth can be absorbed by the panel body, and a quiet environment can be provided for the user using the booth.

[0019] The partition device according to the seventh aspect of the present invention includes the panel body according to any one of the first aspect to the sixth aspect, and the panel body is installed in a state of being erected on the floor surface.

[0020] According to the seventh aspect, the sound absorption effect for the sound emitted from the space on the first main surface side of the first facing material among the spaces partitioned by the partition device can be enhanced. Therefore, a partition device that can provide a quiet environment for the user in the space on the first main surface side of the first facing material can be obtained.

Effect of the Invention

[0021] According to the present invention, it is possible to provide a panel body excellent in sound absorption and design, and a partitioning device including the panel body.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0023] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals are given to configurations having the same or similar functions. And, redundant descriptions of these configurations may be omitted.

[0024] FIG. 1 is an external view of a furniture system according to an embodiment. As shown in FIG. 1, the furniture system 1 includes a partitioning device 2 erected on the floor surface, and a furniture main body 3 disposed inside the partitioning device 2.

[0025] The partition device 2 forms a booth. The partition device 2 is erected on the floor surface and includes at least a pair of wall bodies 4 that surround the space S formed within the partition device 2 from the horizontal outside. In the present embodiment, the partition device 2 includes three wall bodies 4 arranged so as to surround three sides of a rectangular space S in plan view, and has an opening 5 where the wall bodies 4 are not arranged. The partition device 2 allows entry and exit into and from the space S through the opening 5. The wall body 4 is formed by one or more panel bodies 11 erected on the floor surface. Adjacent panel bodies 11 are connected to each other. By connecting the panel bodies 11 to each other, adjacent wall bodies 4 are also connected, forming a single partition device 2.

[0026] The furniture main body 3 is a furniture 3A with a top plate or a chair 3B. The furniture main body 3 is arranged in the space S. The furniture main body 3 has a use surface 3a. The use surface 3a of the furniture main body 3 is the upper surface of the top plate when the furniture main body 3 is a furniture 3A with a top plate, and is the seating surface when the furniture main body 3 is a chair 3B.

[0027] [First Embodiment] Hereinafter, the panel body 11 of the first embodiment will be described. In the partition device 2 shown in FIG. 1, some of the panel bodies 11 are curved, but in the following description, a flat panel body 11 will be taken as an example for explanation. The curved panel body 11 can be obtained by appropriately curving each component of the flat panel body 11 described below. The panel body 11 is erected on the floor surface with its front and back surfaces facing in one horizontal direction. In the following description of the panel body 11 alone, the direction in which the front and back surfaces of the panel body 11 face is defined as the front-rear direction, and the direction orthogonal to the front-rear direction in the horizontal direction is defined as the left-right direction. When the panel body 11 is provided as the partition device 2, the front surface is arranged so as to define the space S.

[0028] FIG. 2 is an exploded perspective view showing the schematic configuration of the panel body according to the first embodiment. In FIG. 2, the illustration of the first through hole 18 and the second through hole 19, which will be described later, is omitted. As shown in Fig. 2, the panel body 11 includes a panel-shaped core material 15, a frame 20 for holding the core material 15, a first facing material 12A and a second facing material 12B provided so as to cover both sides of the core material 15 and the frame 20, a first cushioning material 13A disposed so as to overlap the outside of the first facing material 12A, a second cushioning material 13B disposed so as to overlap the outside of the second facing material 12B, a first skin material 14A for covering the first cushioning material 13A, a second skin material 14B for covering the second cushioning material 13B, a fixing member 30 for fixing the cushioning materials 13A, 13B and the skin materials 14A, 14B to the frame 20, and a sound-absorbing material 60 embedded in the panel body 11.

[0029] The core material 15 has a rectangular shape in plan view. The core material 15 is preferably as lightweight as possible. The core material 15 is formed of a paper-based material and has a honeycomb structure in which a large number of holes penetrating in the plate thickness direction are arranged side by side. However, the core material 15 may be formed of a material other than the paper-based material such as a resin-based material or a wood-based material. In the present embodiment, the core material 15 is vertically divided into an upper half portion 15U and a lower half portion 15L with a dividing line extending in the left-right direction as a boundary. The upper half portion 15U and the lower half portion 15L each have a rectangular shape in plan view. A sound-absorbing material holding portion 15a for arranging the sound-absorbing material 60 is formed in the core material 15. The sound-absorbing material holding portion 15a penetrates the core material 15 in the plate thickness direction. The sound-absorbing material holding portion 15a has a shape substantially matching the outer shape of the sound-absorbing material 60. In the present embodiment, the sound-absorbing material holding portion 15a is formed in the upper half portion 15U of the core material 15.

[0030] The frame 20 is provided along the edge of the core material 15. The frame 20 includes a rectangular outer frame 21 provided along the four sides of the entire core material 15, and a horizontal crossbar 23 extending between the upper half portion 15U and the lower half portion 15L of the core material 15. The frame 20 is formed of a hard material such as a metal-based material or a resin-based material.

[0031] The outer frame 21 includes a pair of vertical frames 21a and a pair of horizontal frames 21b. The pair of vertical frames 21a extend in the vertical direction along two sides facing each other throughout the entire core material 15, and are provided on both sides in the left - right direction of the panel body 11. The pair of vertical frames 21a are joined to the ends of the horizontal cross - bars 23 and are connected to each other via the horizontal cross - bars 23. The pair of horizontal frames 21b extend in the left - right direction orthogonally to the vertical frames 21a and are provided on both sides in the up - down direction of the panel body 11. These vertical frames 21a and horizontal frames 21b are joined by fastening, welding, adhesion, etc. via L - shaped brackets 22. The outer frame 21 is a groove - shaped member and has a groove 25 that opens to the opposite side of the core material 15.

[0032] FIG. 3 is a diagram showing a horizontal cross - section of the end portion in the left - right direction of the panel body according to the first embodiment. As shown in FIGS. 2 and 3, the first facing material 12A is arranged along the front surface of the core material 15 so as to cover the frame 20 and the core material 15. The second facing material 12B is arranged along the rear surface of the core material 15 so as to cover the frame 20 and the core material 15. For example, the first facing material 12A and the second facing material 12B are formed from cardboard or the like.

[0033] The first cushioning material 13A is provided along the outer surface 12Aa (the first main surface) facing the opposite side of the core material 15 in the first facing material 12A. The first cushioning material 13A is provided along the entire portion of the outer surface 12Aa of the first facing material 12A except for the portion facing the recess 13Aa described later. The first cushioning material 13A is provided so as to cover the entire core material 15 via the first facing material 12A. The first cushioning material 13A is formed of a material having flexibility and elasticity. Further, it is desirable that the first cushioning material 13A has sound - absorbing properties, such as having voids. For example, the first cushioning material 13A is formed from a urethane foam material or the like.

[0034] On the outer surface of the first cushioning material 13A, a plurality of recesses 13Aa are formed. For example, the recesses 13Aa are in an oval shape with the vertical direction as the major axis direction. The plurality of recesses 13Aa are arranged at intervals in the vertical and horizontal directions. Each recess 13Aa penetrates the first cushioning material 13A in its thickness direction. In the present embodiment, the first cushioning material 13A is formed symmetrically left and right.

[0035] The second cushioning material 13B is provided along the outer surface 12Ba facing the opposite side of the core material 15 in the second facing material 12B. The second cushioning material 13B is provided along the entire portion of the outer surface 12Ba of the second facing material 12B except for the portion facing the recess 13Ba described later. The second cushioning material 13B is provided so as to cover the entire core material 15 via the second facing material 12B. The second cushioning material 13B is formed of a material having flexibility and elasticity. Further, it is desirable that the second cushioning material 13B has sound absorption properties, such as having voids. For example, the second cushioning material 13B is formed of the same material as the first cushioning material 13A.

[0036] On the outer surface of the second cushioning material 13B, a plurality of recesses 13Ba are formed. For example, the recesses 13Ba are in an oval shape with the vertical direction as the major axis direction. The plurality of recesses 13Ba are arranged at intervals in the vertical and horizontal directions. Each recess 13Ba penetrates the second cushioning material 13B in its thickness direction. The recesses 13Ba of the second cushioning material 13B coincide with the recesses 13Aa of the first cushioning material 13A when viewed from the front-rear direction. In the present embodiment, the second cushioning material 13B is formed symmetrically left and right and is a member having the same shape and size as the first cushioning material 13A.

[0037] The first skin material 14A is provided so as to cover the entire outer surface of the first cushion material 13A and forms the front surface of the panel body 11. For example, the first skin material 14A is formed of an elastically deformable material such as polyester and covers the first cushion material 13A in an extended state. The first skin material 14A enters the recess 13Aa formed in the first cushion material 13A. The first skin material 14A is directly joined to the first facing material 12A by adhesion or the like inside the recess 13Aa without passing through the first cushion material 13A. By the first skin material 14A entering the recess 13Aa, a plurality of oval-shaped depressions 17 are formed on the front surface of the panel body 11.

[0038] The second skin material 14B is provided so as to cover the entire outer surface of the second cushion material 13B and forms the rear surface of the panel body 11. For example, the second skin material 14B is formed of an elastically deformable material such as polyester and covers the second cushion material 13B in an extended state. The second skin material 14B enters the recess 13Ba formed in the second cushion material 13B. The second skin material 14B is directly joined to the second facing material 12B by adhesion or the like inside the recess 13Ba without passing through the second cushion material 13B. By the second skin material 14B entering the recess 13Ba, a plurality of oval-shaped depressions 17 are formed on the rear surface of the panel body 11.

[0039] The fixing member 30 is fitted into the groove 25 of the outer frame 21. The outer peripheral ends of the cushion materials 13A, 13B and the skin materials 14A, 14B are wound inside the groove 25. The fixing member 30 sandwiches the outer peripheral ends of the cushion materials 13A, 13B and the skin materials 14A, 14B wound inside the groove 25 between the side wall surface of the groove 25 and the outer surface of the fixing member 30. Thereby, the outer peripheral ends of the cushion materials 13A, 13B and the skin materials 14A, 14B are fixed to the frame 20.

[0040] The fixing member 30 includes a linear part fixing member 30S that extends linearly along the outer frame 21, and a corner part fixing member 30C that is disposed at a position corresponding to the corner part of the core material 15. At both upper ends of the panel body 11, the corner part fixing member 30C is fixed to the groove 25 by the corner cap 40. The corner cap 40 is integrally fastened to the corner part fixing member 30C, the outer frame 21, and the bracket 22 by bolts 45.

[0041] Support legs 50 are attached to the corner part fixing members 30C disposed at both lower ends of the panel body 11. By grounding the support legs 50 on the floor surface, the panel body 11 is erected on the floor surface.

[0042] FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 5. As shown in FIGS. 2 and 4, the sound-absorbing material 60 is disposed on the opposite side of the first cushioning material 13A sandwiching the first facing material 12A. The sound-absorbing material 60 is disposed between the first facing material 12A and the second facing material 12B. Therefore, the sound-absorbing material 60 is disposed on the opposite side of the second cushioning material 13B sandwiching the second facing material 12B. The sound-absorbing material 60 is disposed in the sound-absorbing material holding portion 15a of the core material 15. Since the sound-absorbing material holding portion 15a penetrates the core material 15, the sound-absorbing material 60 directly faces the first facing material 12A and the second facing material 12B. The sound-absorbing material 60 is formed of a material having excellent sound-absorbing properties. For example, the sound-absorbing material 60 is formed of glass wool or the like. In this case, the sound-absorbing material 60 may have an outer skin member such as a non-woven fabric covering the glass wool. It is desirable that the sound-absorbing material 60 has a lower elastic modulus than the first cushioning material 13A. Thereby, while selecting a suitable member by adding an accent to the outer surface of the panel body 11 as the first cushioning material 13A, a member having more excellent sound-absorbing properties can be selected as the sound-absorbing material 60.

[0043] FIG. 5 is a front view of the panel body according to the first embodiment. As shown in FIG. 5, the sound-absorbing material 60 is disposed on the upper half portion 15U of the core material 15. The sound-absorbing material 60 is disposed inside the outer peripheral edge of the core material 15. The sound-absorbing material 60 is formed in a rectangular shape when viewed from the front-rear direction. At least a part of the sound-absorbing material 60 overlaps the first cushion material 13A when viewed from the front-rear direction. That is, at least a part of the sound-absorbing material 60 is disposed at a position that does not overlap the recess 13Aa of the first cushion material 13A when viewed from the front-rear direction. In the present embodiment, the sound-absorbing material 60 is also disposed at a position that overlaps the recess 13Aa of the first cushion material 13A. The sound-absorbing material 60 is disposed over a range from the range where the uppermost recess 13Aa is formed to the range where the middle recess 13Aa is formed in the vertical direction.

[0044] As shown in FIGS. 4 and 5, a first through-hole 18 is formed in the first facing material 12A. The first through-hole 18 penetrates the first facing material 12A in its thickness direction (front-rear direction). The first through-hole 18 is formed at a location between the first cushion material 13A and the sound-absorbing material 60. The first cushion material 13A and the sound-absorbing material 60 face each other through the first through-hole 18. The first through-hole 18 is formed so as not to overlap the recess 13Aa of the first cushion material 13A when viewed from the front-rear direction. That is, the first through-hole 18 overlaps both the first cushion material 13A and the sound-absorbing material 60 when viewed from the front-rear direction. A plurality of first through-holes 18 are arranged at intervals in the vertical and horizontal directions. At least a part of each first through-hole 18 is located between the recesses 13Aa of the first cushion materials 13A adjacent to each other in the left-right direction when viewed from the front-rear direction. The first through-hole 18 is formed in an elliptical shape having the vertical direction as its major axis direction. However, the shape of the first through-hole 18 is not limited to this.

[0045] The first through-hole 18 is formed only in a part of the first face member 12A in the vertical direction. The first through-hole 18 is provided only at a position above the intermediate position in the vertical direction in the first face member 12A. The position where the first through-hole 18 is formed is a position above the use surface 3a of the furniture body 3 in the furniture system 1 having the panel body 11. By providing the first through-hole 18 at a position above the use surface 3a of the furniture body 3, the first through-hole 18 is provided at a position corresponding to the height of the head of the user who uses the furniture body 3 in the space S of the partition device 2.

[0046] A second through-hole 19 is formed in the second face member 12B. The second through-hole 19 penetrates the second face member 12B in its thickness direction (front-rear direction). The second through-hole 19 is formed at a position between the second cushioning material 13B and the sound-absorbing material 60. The second cushioning material 13B and the sound-absorbing material 60 face each other through the second through-hole 19. The second through-hole 19 is formed so as not to overlap with the recess 13Ba of the second cushioning material 13B when viewed from the front-rear direction. That is, the second through-hole 19 overlaps both the second cushioning material 13B and the sound-absorbing material 60 when viewed from the front-rear direction. A plurality of second through-holes 19 are arranged at intervals in the vertical direction and the horizontal direction. At least a part of each second through-hole 19 is located between the recesses 13Ba of the second cushioning materials 13B adjacent to each other in the horizontal direction when viewed from the front-rear direction. The second through-hole 19 is formed in an elliptical shape with the vertical direction as the major axis direction. However, the shape of the second through-hole 19 is not limited to this. In the present embodiment, the second through-hole 19 coincides with the first through-hole 18 when viewed from the front-rear direction.

[0047] As described above, the panel body 11 of the present embodiment includes a first face material 12A, a first cushion material 13A provided along the outer surface 12Aa of the first face material 12A, and a sound absorbing material 60 disposed on the opposite side of the first cushion material 13A sandwiching the first face material 12A. A first through hole 18 is formed at a location between the first cushion material 13A and the sound absorbing material 60 in the first face material 12A. According to this configuration, when sound is incident on the panel body 11 from the outer surface 12Aa side of the first face material 12A, a part of the sound passes through the first cushion material 13A, then passes through the first through hole 18 of the first face material 12A without being reflected by the first face material 12A, and is absorbed after passing through the sound absorbing material 60. Therefore, the sound absorption effect of the panel body 11 can be improved without increasing the thickness of the first cushion material 13A in order to enhance the sound absorption effect on the sound incident on the panel body 11 from the outer surface 12Aa side of the first face material 12A. In addition, since the degree of freedom in setting the thickness of the first cushion material 13A is improved, it is possible to form a panel body 11 with excellent design, such as providing unevenness on the outer surface of the panel body 11 by varying the thickness of the first cushion material 13A. Furthermore, since the strength of the panel body 11 can be ensured by the first face material 12A, the mechanical strength required for the first cushion material 13A and the sound absorbing material 60 can be suppressed. Therefore, it is possible to select various materials as the first cushion material 13A and the sound absorbing material 60.

[0048] The first through hole 18 is formed only in a part of the first face material 12A in the vertical direction. According to this configuration, by providing the first through hole 18 near the height of the user's head in the panel body 11, it becomes easier to absorb the sound emitted by the user. In addition, it is possible to suppress the sound other than the sound emitted by the user from being reflected at a location near the height of the user's head in the panel body 11 and reaching the user. Furthermore, by not providing the first through hole 18 at a location far from the user's head in the panel body 11, the sound reaching from the opposite side of the user across the panel body 11 can be surely blocked by the panel body 11. Therefore, a panel body 11 capable of providing a quiet environment for the user can be obtained.

[0049] The panel body 11 further includes a first skin material 14A that covers the first cushion material 13A. A part of the first skin material 14A is directly joined to the first facing material 12A. According to this configuration, the first cushion material 13A between the first facing material 12A and the first skin material 14A can be held by the mutually joined first facing material 12A and first skin material 14A. Therefore, the degree of freedom in designing the material and shape of the first cushion material 13A can be further improved. Also, it becomes possible to join the first skin material 14A to the first facing material 12A with the first cushion material 13A in a compressed state, and it becomes possible to form soft unevenness on the outer surface of the panel body 11.

[0050] The panel body 11 further includes a second facing material 12B disposed on the opposite side of the first facing material 12A with the sound-absorbing material 60 interposed therebetween. According to this configuration, the sound that has entered the sound-absorbing material 60 through the first through-hole 18 can be reflected by the second facing material 12B. Thereby, it is possible to suppress the sound that has entered the panel body 11 from the outer surface 12Aa side of the first facing material 12A from passing through the panel body 11, and the panel body 11 with less sound leakage can be obtained. Also, the sound that has entered the sound-absorbing material 60 can be repeatedly reflected between the first facing material 12A and the second facing material 12B and transmitted through the sound-absorbing material 60, and it becomes possible to surely absorb sound by the sound-absorbing material 60.

[0051] A second through-hole 19 is formed in the second facing material 12B. According to this configuration, when sound enters the panel body 11 from the outer surface 12Aa side of the second facing material 12B, a part of the sound passes through the second through-hole 19 of the second facing material 12B without being reflected by the second facing material 12B and is absorbed after passing through the sound-absorbing material 60. Therefore, a panel body 11 with a high sound absorption effect for sound incident from both sides can be obtained.

[0052] The panel body 11 forms a booth that surrounds the space S. The outer surface 12Aa of the first facing material 12A faces the inside of the booth. According to this configuration, the sound emitted from the space S inside the booth can be absorbed by the panel body 11, and a quiet environment can be provided for the user who uses the booth.

[0053] The partition device 2 is installed with the panel body 11 standing on the floor surface. According to this configuration, the sound absorption effect on the sound emitted from the space S on the outer surface 12Aa side of the first facing material 12A among the spaces partitioned by the partition device 2 can be enhanced. Therefore, a partition device 2 can be obtained that can provide a quiet environment for a user in the space S on the outer surface 12Aa side of the first facing material 12A.

[0054] In addition, in this embodiment, the structure of the panel body 11 is formed to be substantially the same on the front and back sides. For this reason, the panel body 11 also exhibits the same operational effects on the space on the second facing material 12B side as on the space on the first facing material 12A side.

[0055] [Second Embodiment] Hereinafter, the panel body 211 of the second embodiment will be described with reference to FIG. 6. In the first embodiment, the first through-hole 18 of the first facing material 12A and the second through-hole 19 of the second facing material 12B overlap each other when viewed from the front-rear direction. In contrast, in the second embodiment, it is different from the first embodiment in that the first through-hole 18 and the second through-hole 19 do not overlap each other when viewed from the front-rear direction. The configuration other than that described below is the same as that of the first embodiment.

[0056] FIG. 6 is a cross-sectional view of the panel body of the second embodiment and corresponds to FIG. 4. As shown in FIG. 6, the first through-hole 18 and the second through-hole 19 are formed so as to be offset from each other. As a result, at a position where the first through-hole 18 overlaps when viewed from the front-rear direction, the second facing material 12B is disposed between the sound-absorbing material 60 and the second cushioning material 13B. Also, at a position where the second through-hole 19 overlaps when viewed from the front-rear direction, the first facing material 12A is disposed between the sound-absorbing material 60 and the first cushioning material 13A.

[0057] In this embodiment, the same effects as those of the first embodiment are achieved. In addition, in this embodiment, since the first through-hole 18 and the second through-hole 19 are provided so as to be offset from each other when viewed in the front-rear direction, the distance from one of the first through-hole 18 and the second through-hole 19 to the other becomes longer. Thereby, the volume passing through one of the first through-hole 18 and the second through-hole 19 and leaking out from the other is reduced, and the panel body 211 with less sound leakage can be obtained.

[0058] [Third Embodiment] Hereinafter, the panel body 311 of the third embodiment will be described with reference to FIG. 7. In the first embodiment, the core material 15 and the sound-absorbing material 60 are disposed between the first face material 12A and the second face material 12B. On the other hand, in the third embodiment, the first face material 12A and the second face material 12B of the second embodiment are replaced with a single first face material 12A, and the core material 15 and the sound-absorbing material 60 are not disposed, which is different from the first embodiment. The configuration other than that described below is the same as that of the first embodiment.

[0059] FIG. 7 is a cross-sectional view of the panel body of the third embodiment and corresponds to FIG. 4. As shown in FIG. 7, the panel body 311 includes a first face material 12A, a first cushion material 13A disposed so as to overlap the first main surface 12Ab of the first face material 12A, a second cushion material 13B disposed so as to overlap the second main surface 12Ac of the first face material 12A, a first skin material 14A covering the first cushion material 13A, and a second skin material 14B covering the second cushion material 13B.

[0060] A first through-hole 18 is formed in the first face material 12A. The first through-hole 18 is formed at a location between the first cushion material 13A and the second cushion material 13B. The first cushion material 13A and the second cushion material 13B face each other through the first through-hole 18. In this embodiment, the second cushion material 13B is used as a sound-absorbing material.

[0061] According to this embodiment, when sound is incident on the panel body 311 from the side of the first main surface 12Ab of the first face material 12A, a part of the sound passes through the first cushioning material 13A, and then, without being reflected by the first face material 12A, passes through the first through-hole 18 of the first face material 12A, passes through the second cushioning material 13B, and is absorbed. Therefore, the sound absorption effect of the panel body 311 can be improved without increasing the thickness of the first cushioning material 13A in order to enhance the sound absorption effect on the sound incident on the panel body 311 from the side of the first main surface 12Ab of the first face material 12A. Therefore, in this embodiment, the same effects as those of the first embodiment are achieved.

[0062] Note that the present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications can be considered within its technical scope. For example, in the above-described embodiment, the panel body 11 is arranged so as to surround the space S from the outside in the horizontal direction, but the use of the panel body 11 is not limited to this. For example, the panel body may be arranged so as to surround the space from above.

[0063] In the above-described embodiment, the second through-hole 19 is formed in the second face material 12B, but the second through-hole may not be formed in the second face material. Even in this case, a part of the sound incident on the panel body 11 from the outer surface 12Aa side of the first face material 12A passes through the first through-hole 18, passes through the sound absorption material 60, and is absorbed. Therefore, the same operational effects as those of the above-described embodiment are achieved. Further, it becomes possible to reflect the sound generated outside the partition device with the panel body, and it is possible to suppress the sound from the outside of the partition device from entering the space inside the partition device.

[0064] In the above embodiment, the recess 13Aa of the first cushioning material 13A penetrates the first cushioning material 13A, but the recess may not penetrate the first cushioning material. In this case, the first cushioning material is provided along substantially the entire outer surface 12Aa of the first facing material 12A without exposing the first facing material 12A. However, since the recess 13Aa penetrates the first cushioning material 13A, the first skin material 14A can be directly joined to the first facing material 12A, and the first facing material 12A and the first skin material 14A can be firmly joined to each other. The same applies to the recess 13Ba of the second cushioning material 13B.

[0065] In the above embodiment, the recess 13Aa is formed in the first cushioning material 13A, but the present invention is not limited to this configuration. That is, the recess may not be formed in the first cushioning material. However, since the recess 13Aa is formed in the first cushioning material 13A, the first cushioning material 13A is provided only on a part of the main surface of the panel body 11, so that the panel body 11 having a soft appearance is formed. The same applies to the second cushioning material 13B.

[0066] In the above embodiment, the first through hole 18 of the first facing material 12A is formed only at a position between the first cushioning material and the sound absorbing material, but the present invention is not limited to this configuration. The first through hole may be formed from a position between the first cushioning material 13A and the sound absorbing material 60 to a position between the recess 13Aa and the sound absorbing material 60. The same applies to the second through hole of the second facing material. However, it is desirable that the through hole is formed only at a position between the cushioning material and the sound absorbing material. Thereby, even if a through hole is provided in the facing material, the skin material joins to the facing material avoiding the through hole, so that the joining strength of the facing material and the skin material can be ensured.

[0067] In addition, within a range not departing from the gist of the present invention, it is possible to appropriately replace the components in the above-described embodiments with well-known components, and the above-described embodiments may be appropriately combined.

Explanation of reference numerals

[0068] 2... Partition devices 11, 211, 311... Panel body 12A... First face material 12Aa... Outer surface (first main face) 12Ab... First main face 12B... Second face material 13A... First cushioning material (cushioning material) 14A... First skin material (skin material) 18... First through-hole 19... Second through-hole 60... Sound-absorbing material S... Space

Claims

1. A first facing material, a cushioning material provided along at least a part of a first main surface of the first facing material, a sound-absorbing material disposed on the opposite side of the cushioning material sandwiching the first facing material, comprising: a first through-hole is formed at a location between the cushioning material and the sound-absorbing material in the first facing material, a panel body.

2. The panel body according to Claim 1, installed in a state of being erected on a floor surface, the first through-hole is formed only in a part of the first facing material in the vertical direction, a panel body.

3. The panel body according to Claim 1 or Claim 2, further comprising a skin material covering the cushioning material, a part of the skin material is directly joined to the first facing material, a panel body.

4. The panel body according to Claim 1 or Claim 2, further comprising a second facing material disposed on the opposite side of the first facing material sandwiching the sound-absorbing material, a panel body.

5. The panel body according to Claim 4, a second through-hole is formed in the second facing material, the first through-hole and the second through-hole are provided so as not to overlap each other when viewed from the thickness direction of the first facing material, a panel body.

6. The panel body according to Claim 1, forming a booth surrounding a space, the first main surface of the first facing material faces the inside of the booth, a panel body.

7. Comprising the panel body according to Claim 1 or Claim 2, a partitioning device in which the panel body is installed in a state of being erected on a floor surface.

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