Sound insulation structure

Abstract

To provide a sound insulation structure capable of adjusting intervals and placement positions of sound absorbing materials even after a booth has been installed, and improving sound absorbing effect of the sound insulation structure.SOLUTION: A sound insulation structure 10 is placed on a booth 1 open at its top so as to cover an open portion of the booth 1, and comprises a plurality of first members 11 placed on the top of the booth 1 and a plurality of second members 12 having sound absorbing properties and arranged in an orientation intersecting with the first members. The second members 12 are arranged in a state in which a top of the first members 11 enters into a groove formed in its lower portion and in a state in which it can slide in an extending direction of the first members 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sound insulating structure to be placed on top of an open-topped booth. [Background technology]

[0002] An example of a conventional sound-proofing structure is that described in Patent Document 1, which is provided on the top of a booth (referred to as a "booth device" in Patent Document 1) and is made up of a plurality of plate-shaped sound-absorbing members. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-037671 A Summary of the Invention [Problem to be solved by the invention]

[0004] In such a sound-proofing structure, the appropriate intervals and positions of the sound-absorbing materials vary depending on, for example, the area of ​​the opening in the ceiling of the place where the booth is installed, etc. However, with this sound-proofing structure, there is an inconvenience in that the intervals and positions of the sound-absorbing materials cannot be adjusted after installation in the booth.

[0005] An object of the present invention is to provide a sound-insulating structure that makes it possible to adjust the spacing and placement position of sound-absorbing materials even after the booth has been installed, thereby improving the sound-absorbing effect of the sound-insulating structure. [Means for solving the problem]

[0006] The sound-insulating structure of the present invention is a sound-insulating structure that is placed on a booth with an open top so as to cover the open part of the booth, and includes a plurality of first members placed on the top of the booth, and a plurality of second members having sound absorbing properties and arranged in a posture in which they intersect with the first members, the second members being arranged in a state in which the tops of the first members are inserted into grooves formed in the bottom of the second members and in a state in which the second members are able to slide in the direction in which the first members extend. The first member does not have a groove for the second member to enter and is in contact with the upper surface of the booth. .

[0007] According to this invention, the second members are configured to be slidable in the direction in which the first members extend, so that the distance between the second members and the positions of the second members can be changed even after the sound insulation structure is installed. For example, after the sound insulation structure is installed in a booth, the second members can be slid while measuring noise with a sound level meter, so that the appropriate distance between the second members and the positions of the second members can be easily confirmed and changed.

[0008] In addition, since the sound insulation structure is configured to be placed on the booth, it can be easily removed from the booth, which makes it easy to change the spacing between the second members and the positions of the second members by removing the sound insulation structure.

[0009] In the present invention, it is preferable that the first member has a first protruding portion that protrudes downward from a contact portion that contacts the upper surface of the booth.

[0010] According to this configuration, a part of the first member having sound absorption properties is located not only above the height position of the upper surface of the booth, but also below the height position of the upper surface of the booth. As a result, it is possible to more effectively improve the sound absorption effect. In addition, since the first protruding portion can contact the side surface of the side panel, the sound insulation structure is prevented from falling.

[0011] In the present invention, it is preferable that the second member has a second protruding portion that protrudes downward from a contact portion of the first member that contacts the upper surface of the booth.

[0012] According to this configuration, a part of the second member having sound absorption properties is located not only above the height position of the upper surface of the booth, but also below the height position of the upper surface of the booth. As a result, it is possible to more effectively improve the sound absorption effect. In addition, by sliding the second member to contact the upper part of the booth, it is possible to easily position the sound insulation structure relative to the booth.

[0013] In the present invention, it is preferable that the first member has a first protruding portion that protrudes downwardly from a contact portion that contacts the upper surface of the booth, and the second member has a second protruding portion that protrudes downwardly from the contact portion, and that the distance between a lower end of the contact portion and a lower end of the first protruding portion is approximately the same as the distance between the lower end of the contact portion and a lower end of the second protruding portion.

[0014] According to this configuration, the first and second sound-absorbing members are located not only above the height of the upper surface of the booth, but also below the height of the upper surface of the booth, and the lower ends of the first and second protruding parts are located at approximately the same height. As a result, it is possible to more effectively improve the sound absorption effect and to improve the design of the sound insulation structure as viewed from inside the booth.

[0015] In the present invention, it is preferable that the upper portion of the second member is formed in an inclined shape with the center being higher than both end portions.

[0016] With this configuration, by reducing the height of the soundproofing structure at the entrance located in front of the booth, the feeling of oppression can be reduced, while by increasing the height of the soundproofing structure in the central part of the booth ceiling, the sound absorption effect can be efficiently enhanced. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a perspective view showing the overall configuration of the booth and the sound-proof structure. [Diagram 2] FIG. 4 is a diagram showing a configuration of a first member. [Diagram 3] FIG. 4 is a diagram showing a configuration of a second member. [Figure 4] FIG. 2 is a left-right view showing the configuration of the sound-proof structure. [Diagram 5] FIG. 2 is a front-rear view showing the configuration of the sound-insulating structure. [Figure 6] FIG. 2 is a diagram showing the configuration of the sound-insulating structure as viewed in the up-down direction (plan view). [Figure 7] 10A to 10C are perspective views showing a method for assembling the sound-proof structure. [Figure 8] FIG. 2 is a front-to-rear view (front view) showing the overall configuration of the booth and the sound-proof structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of the arrow L in the drawing is "left", the direction of the arrow R is "right", the direction of the arrow F in the drawing is "front" and "rear", and the direction of the arrow B in the drawing is "rear" and "near". Also, the direction of the arrow U in the drawing is "up" and the direction of the arrow D is "down".

[0019] [Booth configuration] As shown in Fig. 1, in this embodiment, the booth 1 is configured to be self-supporting and includes a pair of side panels 2 arranged opposite to each other and a rear panel 3 connected between the rear end portions of the side panels 2. The upper part of the booth 1 is open, and the booth 1 does not include a ceiling.

[0020] The side panel 2 and the rear panel 3 are each formed of a rectangular plate-like member. The side panel 2 has an upper surface 2a located at the upper end of the side panel 2. Similarly to the side panel 2, the rear panel 3 has an upper surface 3a located at the upper end of the rear panel 3.

[0021] The upper surface 2a of the side panel 2 and the upper surface 3a of the rear panel 3 are configured to be at the same height and are configured so as not to come into contact with the ceiling of the room in which the booth 1 is installed.

[0022] [About the configuration of sound insulation structure] As shown in FIG. 1, a sound insulation structure 10 is placed on top of a booth 1 with an open top so as to cover the open part of the booth 1. The sound insulation structure 10 includes a plurality of first members 11 made of a plate-like member having sound absorption properties, and a plurality of second members 12 made of a plate-like member similarly having sound absorption properties. The first members 11 and the second members 12 are, for example, felt, urethane, glass wool, rock wool, etc., but may also be made by attaching sound absorbing materials such as felt to wooden members or resin members. In this embodiment, the material and thickness of the first member 11 and the material and thickness of the second member 12 are the same, but they may be different. Here, the first member 11 and the second member 12 are made of a material that has sound absorption properties and can be punched, and are configured so that a press process can be performed using a punching die in a stacked state, which is preferable because the members can be manufactured inexpensively, but is not limited thereto.

[0023] One end of the first member 11 is placed on the upper surface 2a of one side panel 2, and the other end is placed on the upper surface 2a of the other side panel 2. That is, the second member 12 is disposed in a position intersecting with the first member 11. Note that in this embodiment, the first member 11 is placed on the upper surface 2a located at the upper end of the side panel 2, but in cases where the side panel 2 has a step at its upper portion, or has multiple upper surfaces with different heights, it is not necessarily required that the first member 11 be placed on the upper surface located at the upper end.

[0024] As shown in Fig. 2 when viewed in the thickness direction of the first member 11, the first member 11 is formed in a rectangular shape having cutouts 21 at the lower portions of both sides. The bottom side 11a is formed to have a length substantially equal to the distance between the two side panels 2 arranged opposite each other in the booth 1. The side side 11b extending upward from the cutout 21 is configured to be located above and outside the side panel 2. In this embodiment, the top side 11c is formed in a straight line. The bottom side 11a and the side side 11b are also formed in a straight line.

[0025] The cutout portion 21 is formed in a shape having a horizontal side 21a extending in the extension direction of the first member 11 and a vertical side 21b extending in the width direction of the first member 11. The vertical sides 21b extend upward from both ends of the lower side 11a, and the horizontal side 21a extends from the upper end of the lower side 11a in the extension direction of the first member 11. The side side 11b extends upward from the end of the side side 11b.

[0026] As shown in Fig. 3 when viewed in the thickness direction of the second member 12, the second member 12 has a lower side 12a, side sides 12b extending upward from both ends of the lower side 12a, and an upper side 12c extending between the upper ends of both sides 12b. The lower side 12a and the side sides 12b are formed in a straight line. The upper side 12c is formed in an arch shape that curves upward. In other words, the upper part of the second member 12 is formed in an inclined shape with the center being higher than both ends.

[0027] A plurality of grooves 22 extending upward from the lower side 12a are formed in the lower part of the second member 12. The width of the grooves 22 is configured to be equal to or greater than the thickness of the first member 11. The depth of the grooves 22 is configured to be approximately the same as the distance between the lower side 11a and the upper side 11c of the first member 11.

[0028] As shown in Figures 4 and 5, a plurality of second members 12 are arranged in parallel in an intersecting manner with a plurality of first members 11 arranged in parallel. As shown in Figure 6, in this embodiment, the first members 11 and the second members 12 are arranged to intersect at right angles. With this configuration, the sound insulation structure 10 is configured in a lattice shape by the first members 11 and the second members 12.

[0029] The second member 12 is disposed with the upper portion of the first member 11 inserted into the groove portion 22. As described above, the upper side 11c of the first member 11 is formed in a straight line, and no groove or the like is formed. Therefore, even after the first member 11 and the second member 12 are combined, the second member 12 is disposed in a state in which it can slide in the direction in which the first member 11 extends.

[0030] [Regarding the first and second protruding parts] When the sound-insulating structure 10 is placed on the side panels 2, the first member 11 is placed so that the horizontal sides 21a of the cutouts 21 at both ends thereof come into contact with the upper surfaces 2a of the two side panels 2. In this way, one end of the first member 11 is placed on one side panel 2, and the other end is placed on the other side panel 2.

[0031] 4, the portion of the first member 11 between the vertical sides 21b of the notches 21 at both ends protrudes downward from the horizontal side 21a (hereinafter simply referred to as the "contact portion") which is the contact portion that comes into contact with the upper surface 2a of the side panel 2. Hereinafter, the portion of the first member 11 that protrudes downward from the contact portion that comes into contact with the upper surface 2a of the side panel 2 (booth 1) is referred to as the "first protruding portion 23."

[0032] 5, the lower portion of the second member 12 protrudes downward from the height position of the horizontal side 21a of the cutout portion 21 of the second member 12, that is, the contact portion. Hereinafter, the portion of the second member 12 that protrudes downward from the contact portion is referred to as the "second protruding portion 24."

[0033] As shown in Figures 4 and 5, the lower end of the first protruding portion 23 and the lower end of the second protruding portion 24 are configured to be located at approximately the same height, and the distance between the contact portion and the lower end of the first protruding portion 23 is configured to be approximately the same as the distance between the contact portion and the second protruding portion 24.

[0034] [Assembling the soundproof structure] As shown in FIG. 7, when assembling the sound-insulating structure 10, the second member 12 is combined with the multiple first members 11 arranged in parallel such that the upper portions of the first members 11 fit into the grooves 22.

[0035] In this embodiment, the second members 12 located at both ends of the plurality of second members 12 are assembled such that the position of the outer surface of the second member 12 is substantially the same as the position of the vertical side 21a of the cutout portion 21 of the first member 11 in the extension direction of the first member 11. With this configuration, when the sound-insulating structure 10 is placed on the upper end of the side panel 2, the second members 12 located at both ends of the plurality of second members 12 are configured so that their lower portions come into contact with the side panel 2.

[0036] In the above, we have described the case where the sound-insulating structure 10 is first assembled and then placed on the upper end of the side panel 2. However, the sound-insulating structure 10 may also be assembled by first placing multiple first members 11 in parallel on the upper end of the side panel 2 and then combining the second members 12.

[0037] As shown in Figure 8, the sound-proofing structure 10 placed on the upper end of the side panel 2 absorbs sound generated from inside the booth 1 and sound generated from outside the booth 1, thereby reducing sound leaking from inside the booth 1 to outside the booth 1 and reducing sound entering the booth 1 from outside the booth 1.

[0038] Furthermore, if a groove into which the second member 12 is inserted is formed in the first member 11, the distance between the bottom of the groove and the lower side 11a becomes short, and the second member 12 is easily damaged during transportation, assembly, and removal. Furthermore, the degree of freedom in the installation position, number, and angle of the second member 12 is lost. In the present invention, such inconvenience can be avoided by not forming a groove into the first member 11 into which the second member 12 is inserted. Here, if the first member 11 and the second member 12 are made of a material that has sound absorption properties and can be punched, and are configured so that press processing can be performed using a punching die in a state where multiple sheets are stacked, this is preferable because multiple sheets of members can be manufactured inexpensively, but is not limited to this. Note that, as materials that have sound absorption properties and can be pressed using a punching die, hard felt, urethane foam, etc. are considered. These are not very strong materials, but by not forming a groove in the upper part of the first member 11, it is possible to provide a sound insulation structure 10 with superior strength at a low cost.

[0039] [Another embodiment] Hereinafter, another embodiment in which the above embodiment is modified will be described.

[0040] (1) In the above embodiment, the first member 11 and the second member 12 intersect at a right angle. However, the present invention is not limited to the above embodiment, and the first member 11 and the second member 12 may be configured to intersect at an angle other than a right angle.

[0041] (2) In the above embodiment, the first member 11 has one end placed on the upper surface 2a of one side panel 2 and the other end placed on the upper surface 2a of the other side panel 2, but the present invention is not limited to the above embodiment. For example, if the booth 1 is configured to have a door with an upper frame on the front side, the first member 11 may be configured to have one end placed on the upper surface of the upper frame of the door and the other end placed on the upper surface 3a of the rear panel 3. Also, if the booth 1 is provided with a batten provided at the top so as to straddle the panels constituting the wall of the booth 1, the first member 11 may be configured to have one end placed on the batten and the other end placed on the side panel 2, the rear panel 3, or another batten.

[0042] (3) In the above embodiment, as shown in Fig. 1, the sound insulation structure 10 includes six first members 11 and seven second members 12. The number of first members 11 and second members 12 is not limited to this. The number of first members 11 may be two or more, and preferably three or more. The number of second members 12 may be two or more, and preferably three or more.

[0043] (4) In the above embodiment, the first member 11 and the second member 12 are described as being made of plate-shaped members. However, the present invention is not limited to the above embodiment, and either or both of the first member 11 and the second member 12 may be made of rod-shaped members.

[0044] (5) In the above embodiment, a configuration in which the cutout portion 21 is formed in the first member 11 has been described as an example. However, the present invention is not limited to the above embodiment, and the first member 11 may have a configuration in which the cutout portion 21 is not formed, that is, the first member 11 and the second member 12 may have a configuration in which the first member 23 and the second member 12 do not have the first protruding portion 23 and the second protruding portion 24.

[0045] (6) In the above embodiment, the lower end of the first protruding portion 23 and the lower end of the second protruding portion 24 are configured to be located at approximately the same height position, but the present invention is not limited to the above embodiment, and in the above embodiment, the lower end of the first protruding portion 23 and the lower end of the second protruding portion 24 may be configured to be located at different height positions. For example, by configuring the height position of the lower end of the second protruding portion 24 to be approximately the same as the height position of the vertical side 21a of the cutout portion 21 of the first member 11, the first member 11 may be placed on the side panel 2 and the second member 12 may be placed on the rear panel 3.

[0046] (7) In the above embodiment, the upper part of the second member 12 is formed in an arch shape curving upward, but the present invention is not limited to the above embodiment, and the upper part (upper side 11c) of the second member 12 may be formed in a linear shape with an inclination such that the center is higher than both ends. Note that the upper part (upper side 11c) of the second member 12 may be formed in a linear shape extending horizontally.

[0047] The configurations disclosed in the above embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, unless a contradiction occurs. In addition, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these embodiments, and can be appropriately modified within the scope of the present invention. [Industrial Applicability]

[0048] The present invention can be used in a sound insulating structure placed on top of an open-topped booth. [Explanation of symbols]

[0049] 1: Booth 10: Sound insulation structure 11: First member 12: Second member 22: Groove 23: 1st protrusion part 24:Second protruding part

Claims

1. A sound-proofing structure that is placed on a booth having an open top so as to cover the open part of the booth, A plurality of first members placed on an upper portion of the booth; a plurality of second members having sound absorbing properties and arranged in a manner intersecting the first members; The second member is a sound-proofing structure arranged in a state in which the upper part of the first member is inserted into a groove portion formed in the lower part of the first member and in a state in which the second member is able to slide in the direction in which the first member extends.

2. The sound-proof structure according to claim 1 , wherein the first member has a first protruding portion that protrudes downward from a contact portion that contacts the upper surface of the booth.

3. The sound-proof structure according to claim 1 , wherein the second member has a second protruding portion that protrudes downward from a contact portion of the first member that contacts the upper surface of the booth.

4. The first member includes a first protruding portion that protrudes downward from a contact portion that contacts the upper surface of the booth, the second member includes a second protruding portion protruding downward from the contact portion, 2. The sound insulation structure according to claim 1, wherein a distance between a lower end of the contact portion and a lower end of the first protruding portion is substantially the same as a distance between a lower end of the contact portion and a lower end of the second protruding portion.

5. 5. The sound insulation structure according to claim 1, wherein the upper portion of the second member is formed in an inclined shape such that the center is higher than both end portions.

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