JP2018059379A - Sound isolation unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound isolation unit which is easy to construct it and easy to secure excellent soundproof effect.SOLUTION: A sound isolation unit 10 is provided which comprises a rear rod-like member 20 supported by a building structural member 52c, a front rod-like member 30 attached to a fitting 60, and a holding member 40 that is formed of elastic material and holds the rear and front rod-like member 20,30 spaced apart from it in insertion state. In the sound isolation unit 10, protrusions 43a are provided in a plurality of places at an outer surface side of a rear side wall part 43 disposed on the building structural member 52c side of the holding member 40.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a sound insulation unit provided to enhance a soundproofing effect between building components or between a building component and an attachment attached to the building component.

  Conventionally, when constructing an inner wall material using a building pillar or the like, a block-like member (hereinafter referred to as a block) formed of synthetic rubber or the like between the pillar or the like and the inner wall material in order to enhance the soundproofing effect. (Also called a soundproof material). In order to fix the inner wall material to the stud, etc., a wood screw is screwed in from the surface side of the inner wall material, the inner wall material and the block-like soundproof material are penetrated, reach the stud, etc. (hereinafter referred to as the first conventional technique) Are also widely adopted. However, in this construction method, the hole through which the wood screw passes is connected between the inner wall material and the stud, and the sound inside and outside the room is transmitted through the wood screw and leaks.

Such a phenomenon also occurs when building a building floor.
In the case of building a building floor, for example, a base material is arranged on a joist on a base via a block-like soundproofing material, and the base material and the block-like soundproofing material are penetrated from above the base material to form a joist. After fixing the base material and the block-like soundproofing material to the joist with the screwed wood screws, it is widely practiced to lay a flooring material such as a decorative material on the base material. In the construction of the upper floor of two or more floors of a building, for example, a base material is arranged on a joist provided on a beam via a block-shaped soundproof material, and the base material and the block-shaped soundproof material are penetrated from above the base material. After fixing the base material and the block-shaped soundproof material to the joist with wood screws screwed into the joist, a floor material such as a decorative material is laid on the base material.
As for the floor, the hole through which the wood screw passes is connected between the base material and the joist, and the sound inside and outside the room is transmitted through the wood screw and leaks.

In view of the fact that sound inside and outside the room leaks through wood screws and the like in the first prior art described above, there is a proposal described in Patent Document 1, for example, as a technique for improving the soundproof performance of a building.
Patent Document 1 discloses a shielding structure in which a front-side frame member joined to an inner wall material or the like and a back-side frame member joined to a structural frame of a building are held with a predetermined gap by a shielding member made of an elastic material. A material is disclosed. The shielding member includes a tubular holding portion formed in a tubular cross section and a pair of locking hook portions having an L-shaped cross section provided on both sides of the tubular holding portion, and a pair of the front frame member and the back frame member. It is hold | maintained on the both sides via a tubular holding | maintenance part by the latching hook part.

  The shielding structure material described in Patent Document 1 is provided between a structural housing of a building and an inner wall material or the like, and attaches the inner wall material or the like to the structural housing. The inner wall material or the like is fixed to the front frame member. The inner wall material fixed to the front side frame member is supported by the structural housing via the tubular holding portion of the shielding member and the back side frame member. The tubular holding portion of the shielding member attenuates or shields the sound energy propagating between the inner wall material or the like and the structural housing. As a result, the shielding structure material described in Patent Document 1 can ensure high soundproofing performance as compared with the first prior art.

Japanese Patent No. 4143022

  As described above, the shielding member of the shielding structure material described in Patent Document 1 has a front frame member and a back frame member formed by a pair of L-shaped locking hook portions provided on both sides of the tubular holding portion. It is the structure to hold. Further, the shielding structure material described in Patent Document 1 is formed with a flat plate bent into a concave section, and a convex portion protruding outward from both shoulders by bending the central section of the concave section. Employs a front side frame member and a back side frame member formed as a joint surface with a structural housing or an inner wall material. And the shielding structure material of patent document 1 becomes a structure which hold | maintains both shoulders of a front side frame member with a pair of latching hook part, and hold | maintains both shoulders of a back side frame member with a pair of latching hook part. .

The shielding member is preferably an integrally molded product made of synthetic rubber from the viewpoint of cost reduction.
However, the shielding structure material using the sound insulation member made of synthetic rubber is used in the construction of the structural housing, because the front and back frame members held by the pair of engagement flange portions of the sound insulation member are elastically deformed by the engagement flange portion. The sound insulation member may fall off, and the construction may take time.

  A problem to be solved by some embodiments of the present invention is to provide a sound insulation unit that is easy to construct and can easily secure an excellent soundproofing effect.

In order to solve the above problems, the present invention provides the following aspects.
The first aspect is a sound insulation unit disposed between a building component and an attachment attached to the building component, and is a back side bar-shaped member supported by the building component, A front-side bar-like member to which the attachment is attached, and a holding member that is made of an elastic material and holds the back-side and front-side bar-like members with a certain gap therebetween, and the holding member is located on the building component side A pair of side wall portions having a rectangular cylindrical holding member outer cylinder portion configured by a rear side wall portion to be disposed, a front side wall portion provided in parallel with the back side wall portion, and a pair of side wall portions; In order to hold the back-side and front-side rod-like members inserted inside the holding member outer cylinder part at a distance from each other in the interval direction of the back-side wall part and the front-side wall part. The rear projection is provided with a holding projection The plurality of positions of the outer surface is a sound insulation unit, characterized in that projections are provided.
In a second aspect, the holding projection is a part of an intermediate partition that is provided between the back side wall and the front side wall and connects the pair of side walls, and the holding member is Inside the holding member outer cylinder part, a back side bar-like member insertion hole through which the back side bar-like member is inserted between the back side wall part and the intermediate partition part, and between the front side wall part and the intermediate partition part A front side bar-like member insertion hole through which the front side bar-like member is inserted is secured, and a screw for fixing the intermediate partition portion to the building component member is provided at the center in the surface direction of the front side wall part. A screw insertion hole for passing through is formed, and the back-side rod-like member inserted through the back-side rod-like member insertion hole comes into contact with the center portion in the surface direction of the intermediate partition portion and the back side wall portion. It is the unit for sound insulation of the aspect.
According to a third aspect, the intermediate partition portion has a pair of intermediate connection walls that connect the pair of side wall portions, and the pair of intermediate connection walls extends in the direction of the interval between the back side wall portion and the front side wall portion. At a position corresponding to the screw insertion hole at the center portion in the surface direction of the front side intermediate connection wall, which is provided in parallel with the back side wall portion and the front side wall portion so as to be spaced apart from each other and facing the front side insertion space. Is formed with a front-side connection wall screw hole for passing a screw that passes through the back-side intermediate connection wall, which is the intermediate connection wall facing the back-side insertion space, and fixes the back-side intermediate connection wall to the back-side bar-shaped member. This is a sound insulation unit according to the second aspect.
In a fourth aspect, the intermediate partition portion further includes a reinforcing member provided between the pair of intermediate connection walls and abutted against each of the pair of intermediate connection walls. It is the unit for sound insulation of an aspect.
In a fifth aspect, the intermediate partition portion is a solid wall portion formed integrally with the holding member outer cylinder portion by rubber, and corresponds to the screw insertion hole in the center portion in the surface direction of the intermediate partition portion. The sound insulation unit according to the second aspect, wherein an intermediate partitioning screw hole for passing the screw is formed at a position.
A sixth aspect is the sound insulating unit according to any one of the first to fifth aspects, wherein protrusions are provided at a plurality of locations on the outer surface side of the front side wall portion.
A seventh aspect is the sound insulating unit according to any one of the first to sixth aspects, wherein the back-side and front-side bar-shaped members are each made of a wood material that can be cut using a hand tool. .
According to an eighth aspect, the front bar member has a screw hole through which the screw can be inserted and communicated with the screw insertion hole of the front side wall portion in a state of being inserted into the front bar member insertion hole of the holding member. The sound insulation unit according to any one of the first to seventh aspects, wherein the sound insulation unit is formed.
In a ninth aspect, the holding member is shorter than the back-side and front-side rod-like members, and a plurality of the holding members are provided at intervals in the longitudinal direction with respect to the back-side and front-side rod-like members. It is a sound insulation unit according to any one of the first to eighth aspects.

According to the sound insulating unit according to some embodiments of the present invention, the holding member holds the back side bar-like member between the back side wall part and the back side holding projection that connect the pair of side wall parts, A front side bar-like member is held between a front side wall part connecting the side wall parts and a front side holding projection. Therefore, the sound insulation unit can prevent the back-side and front-side bar-like members from being inserted into the inside of the holding member outer cylinder from falling off the holding member during the construction to the structural frame of the building, and the construction is easy. Become.
Moreover, the holding member can suppress the contact part with a structural housing few by making the protrusion of the back side wall part outer surface side contact | abut to a structural housing. As a result, the sound insulation unit can easily ensure an excellent soundproofing effect.

It is a figure which shows the unit for sound insulation which concerns on one Embodiment of this invention, (a) is a front sectional view, (b) is a figure which shows the structure seen from the back side. It is a disassembled perspective view of the exploded perspective view which shows an example of the wall of the building using the unit for sound insulation of FIG. FIG. 3 is a side sectional view showing the wall of FIG. 2. It is a disassembled perspective view which shows the structure of the unit for sound insulation of FIG. It is an expanded sectional view (enlarged plane sectional view) which shows the sound insulation unit vicinity in the wall of FIG. It is a disassembled perspective view of the exploded perspective view which shows an example of the floor of the building using the unit for sound insulation of FIG. It is an expanded sectional view which shows the sound insulation unit vicinity of the floor of FIG. It is a back side protrusion of another aspect of the sound insulation unit of FIG. 1, and shows an example of a protrusion (illustrated is a cylindrical protrusion) formed in a predetermined cross-sectional dimension over the entire length in the protruding direction from the back side wall portion. (A) is front sectional drawing, (b) is a figure which shows the structure seen from the back side. It is a back side protrusion of the other aspect of the sound insulation unit of FIG. 1, and is a figure which shows the taper-shaped protrusion (the example of illustration is a cone-shaped protrusion) in which a cross-sectional dimension reduces as the distance from a back side wall part increases. (A) is front sectional drawing, (b) is a figure which shows the structure seen from the back side. It is a figure explaining the sound insulation unit of another mode concerning the present invention, Comprising: The screw shaft part penetration hole for letting the shaft part of the screw for holding members pass to the solid middle partition part (intermediate partition wall) is penetrated and formed. It is a front sectional view showing a sound insulation unit having a holding member having a configuration. It is a figure explaining the unit for sound insulation of another aspect which concerns on this invention, Comprising: It has an expansion hole part in the holding member front side edge part of the screw shaft part insertion hole in the intermediate partition part (intermediate partition wall) of the holding member of FIG. It is a front sectional view showing a sound insulation unit having a holding member through which an intermediate partitioning part screw hole is formed. It is a figure explaining the sound insulation unit of another mode concerning the present invention, Comprising: The sound insulation which has the holding member of the composition where the holding projection which protrudes from the both-sides wall part of a holding member was provided mutually separated in the holding member width direction FIG. It is a figure explaining the sound insulation unit of another mode concerning the present invention, Comprising: The back side holding projection and the front side holding projection which protrude from the both-sides wall part of a holding member were provided mutually spaced apart in the holding member width direction, respectively. It is a front sectional view which shows the unit for sound insulation which has a holding member of a structure. It is a figure explaining the sound insulation unit of another aspect which concerns on this invention, Comprising: It is front sectional drawing which shows the sound insulation unit which has a holding member of the structure which accommodated the reinforcement member in the partition part inside space of the intermediate partition part of a holding member. is there. FIG. 15 is an enlarged plan sectional view showing the vicinity of the sound insulation unit of the wall having the configuration using the sound insulation unit of FIG. 14 instead of the sound insulation unit of FIG.

Hereinafter, sound insulation units according to some embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1A, 1B, 5 and the like, a sound insulation unit 10 according to an embodiment of the present invention includes a back side bar-like member 20, a front side bar-like member 30, a back side bar-like member 20, and a front side bar-like shape. And a holding member 40 that holds the member 30 with a certain gap therebetween.

As shown in FIGS. 2 and 6, the sound insulation unit 10 is provided on the structural housing 51 by attaching the holding member 40 and the back-side bar-shaped member 20 to the structural housing 51 of the building 50 (the illustrated example is a wooden house).
The building 50 shown in FIG. 2 and FIG. 3 (indicated by reference numeral 50A in FIG. 2 and FIG. 3) is installed in the wooden wall base 52 via the sound insulation unit 10 attached to the wooden wall base 52 as the structural casing 51. A wall 54 configured to support the plate 61 is provided. The wall 54 includes a wooden wall base 52, a sound insulation unit 10, and an interior board 61.

  The building 50 shown in FIGS. 6 and 7 (indicated by reference numeral 50B in FIGS. 6 and 7) is placed on the sound insulation unit 10 via the sound insulation unit 10 mounted on the wooden floor base 53 which is the structural casing 51. The floor 55 of the structure which supported the floor main body 55A provided in the above on the wooden floor base 53 is shown. The floor 55 includes a wooden floor base 53, a sound insulation unit 10, and a floor body 55A.

The floor 55 shown in FIGS. 6 and 7 has a floor main body 55A including a floor main body base plate 62 supported on the sound insulation unit 10 and a floor material 63 laminated on the floor main body. The floor main body base plate 62 is fixed to the sound insulating unit 10.
Even if the floor main body 55A has a vibration-damping and sound-insulating sheet having a configuration in which a metal filler is dispersed and mixed in a base material such as asphalt or rubber between the floor main body base plate 62 and the uppermost floor material 63. good.

2 and 3, the sound insulation unit 10 is used as a vertical member 52c (a building component member; hereinafter also referred to as a wall base vertical member) such as a pillar 52a and a spacer 52b constituting the wooden wall base 52 of the structural frame 51. The holding member 40 and the back-side bar-like member 20 are fixed (attached) and attached to the structural housing 51. The wall base vertical member 52c extends in the vertical direction.
In FIG. 2, the wooden wall base 52 includes a trunk edge 52 d that connects the columns 52 a and the intermediate columns 52 b in the horizontal direction.

  6 and 7, the sound insulating unit 10 is attached to the structural casing 51 by fixing (attaching) the holding member 40 and the back-side bar-shaped member 20 to the wooden floor base 53 of the structural casing 51. 6 and 7 has a plurality of joists 53a provided in parallel to each other and a rough plate 53b provided on the joists 53a. The holding member 40 and the back-side bar-shaped member 20 of the sound insulating unit 10 are fixed to the joist 53a and the rough plate 53b of the wooden floor base 53.

The wooden wall base 52 in FIGS. 2 and 3 and the wooden floor base 53 in FIGS. 6 and 7 are each configured by a member made of a wood material such as wood (building constituent member).
The wall base vertical member 52c, the joist 53a, and the rough board 53b are all building components formed of a wood material such as wood or plywood.

The interior plate 61 of the wall 54 in FIGS. 2 and 3 and the floor main body base plate 62 in FIGS. 6 and 7 are attachments 60 that are attached to the structural housing 51 via the sound insulation unit 10.
The front bar member 30 held by the holding member 40 is supported by the structural housing 51 via the holding member 40. In FIGS. 2, 3, 6, and 7, a building component member to be supported by the structural housing 51 is attached to the front bar member 30. The attachment 60 attached to the front bar member 30 is supported by the structural housing 51 via the sound insulating unit 10.

The sound insulation unit 10 is disposed between the structural housing 51 of the building 50 and the attachment 60 attached to the structural housing 51 to support the attachment 60.
2 and 3, the attachment 60 supported by the sound insulation unit 10 is an interior plate 61 (building component, an example of interior material) that constitutes an interior part of a living space S such as a living room in the building 50. . The living space S includes not only living rooms but also hallways, stairs and the like.

  2 and 3, the living space S side in the building 50 is also referred to as a front side. Moreover, about the sound insulation unit 10 and the interior board 61 of the wall 54, the living space S side is also referred to as the front side, and the side opposite to the living space S (the wooden wall base 52 side) is also referred to as the back side.

  The sound insulation unit 10 of the wall 54 is provided on the front side of the wooden wall base 52. The interior board 61 is fixed to the sound insulation unit 10 and provided on the front side of the sound insulation unit 10. A plurality of interior boards 61 are arranged in parallel to a virtual surface (hereinafter also referred to as a wall base front surface) on which the front side surfaces of the plurality of wall base vertical members 52c of the wooden wall base 52 are arranged, A wall-like body parallel to the front surface of the wall base is formed. The wall base front surface of the wall 54 shown in FIGS. 2 and 3 is a plane perpendicular to the horizontal plane. The sound insulation unit 10 is located on the back side of the wall-shaped body formed by the plurality of interior plates 61.

  The interior portion of the wall 54 is, for example, a wall-shaped body having a configuration in which a plurality of interior plates 61 serving as a decorative material are provided in series, but in addition, on the front side of the wall-shaped body formed by the plurality of interior plates 61. The thing of the structure provided with cosmetics, such as a wallpaper, is also included.

6 and 7, the attachment 60 supported by the sound insulation unit 10 is a floor main body base plate 62 on which the floor material 63 of the building 50 is laid.
The floor material 63 and the floor main body base plate 62 are building components constituting the floor 55 of the building 50. The floor material 63 is an example of an interior material that forms the inner surface of the living space S.

6 and 7, the living space S side (upper side in FIGS. 6 and 7) is also referred to as the front side, and the side opposite to the living space S is also referred to as the back side (lower side in FIGS. 6 and 7).
The sound insulation unit 10 of the floor 55 is provided on the front side (upper side) of the wooden floor base 53.
A plurality of the rough plates 53b are arranged in parallel to a virtual surface (hereinafter also referred to as a joist front surface) on which the front surfaces of the plural joists 53a of the wooden floor base 53 are arranged. A wall-like body that extends parallel to the surface and covers the joist 53a is formed.
Hereinafter, the surface on the front side (upper side) of the wall-like body formed by the plurality of rough plates 53b is also referred to as a floor base front surface. The floor base front surface extends parallel to the joist front surface.

The joist front surface and the floor base front surface of the floor 55 shown in FIGS. 6 and 7 are virtual planes extending in the horizontal direction.
The floor main body base plate 62 is fixed to the sound insulation unit 10 and provided on the front side (upper side) of the sound insulation unit 10. A plurality of the floor main body base plates 62 are arranged in parallel to the floor base front surface and the joist front surface, and constitute a wall-like body parallel to the floor base front surface.
In FIG. 6, the wooden floor base 53 of the floor 55 is specifically a rough floor.
The floor 55 is supported by a wooden floor base 53 that is a rough floor, a plurality of sound insulating units 10 provided in parallel to each other on a rough plate 53 b that forms the top surface of the wooden floor base 53, and the sound insulating units 10. A floor body 55A including a floor body base plate 62 and a floor material 63 stacked on the floor body base plate 62 is provided.
The sound insulation unit 10 is located on the back side (lower side) of the floor main body 55A, more specifically, on the back side (lower side) of the wall-like body formed by the plurality of floor main body base plates 62 at the bottom layer of the floor main body 55A.

  The front surface of the wall base and the front surface of the floor base are the surfaces (hereinafter referred to as the structural main body) of the building internal space (residence space S, corridor, etc.) side of the part where the sound insulation unit 10 is attached in the structural main body 51. It is also an example.

The back side bar-shaped member 20 and the front side bar-shaped member 30 are each made of a wood material that can be cut using a hand tool such as a saw. As a material for forming the back side bar-shaped member 20 and the front side bar-shaped member 30, for example, wood, a single plate laminated material, OSL (Oriented Strand Lumber), or the like can be adopted.
Moreover, the back side rod-shaped member 20 and the front side rod-shaped member 30 shown in FIGS. 1-7 are formed in the long plate shape extended in cross-sectional rectangle.

  The material of the wall foundation vertical member 52c constituting the wooden wall foundation 52 shown in FIGS. 2 and 3 and the joist 53a and the rough board 53b constituting the wooden floor foundation 53 shown in FIGS. And a woody material that can be used for the front bar-shaped member 30.

Next, the holding member 40 will be described.
The holding member 40 shown in FIGS. 1 to 7 is an integrally molded product formed entirely of an elastic material (here, rubber).
The material for forming the holding member 40 is rubber (natural rubber or synthetic rubber) here. The holding member 40 is a rubber member that is elastically deformable and has a high shape restoration rate after deformation.
However, as a forming material of the holding member 40, various synthetic resin materials that can be elastically deformed other than rubber can be adopted.

The holding member 40 has a substantially rectangular cylindrical cross section in which a pair of side wall portions 45 are connected by a back side wall portion 43 disposed on the structure housing 51 side and a front side wall portion 44 provided in parallel with the back side wall portion 43. A holding member outer cylinder portion 46 is provided.
The holding member 40 also has an intermediate partition portion 47 that is provided between the back side wall portion 43 and the front side wall portion 44 and connects between the pair of side wall portions 45.

The intermediate partition portion 47 of the holding member 40 has a pair of intermediate connection walls 47 a and 47 b that connect the pair of side wall portions 45.
The pair of intermediate connecting walls 47 a and 47 b are provided in parallel to the back side wall 43 and the front side wall 44 so as to be separated from each other in the interval direction of the back side wall 43 and the front side wall 44.
Hereinafter, of the pair of intermediate connection walls 47a and 47b, the intermediate connection wall 47a positioned on the back side wall portion 43 side is referred to as the back side intermediate connection wall, and the intermediate connection wall 47b positioned on the front side wall portion 44 side is referred to as the front side intermediate connection wall. say.

The intermediate partition portion 47 of the holding member 40 shown in FIG. 1A, FIG. 4, and the like includes projecting wall portions 47 c that protrude from the pair of side wall portions 45 of the holding member 40 toward the inner surfaces facing each other. Specifically, the pair of intermediate connection walls 47 a and 47 b of the intermediate partition portion 47 connects the protruding wall portions 47 c protruding from the pair of side wall portions 45 of the holding member 40. The pair of intermediate connection walls 47a and 47b of the intermediate partition portion 47 connect the pair of side wall portions 45 of the holding member 40 via the protruding wall portion 47c.
The intermediate partition portion 47 of the holding member 40 shown in FIG. 1A, FIG. 4 and the like has a pair of protruding wall portions 47c protruding from the pair of side wall portions 45 of the holding member 40 and a pair of connecting the protruding wall portions 47c. It is comprised by the intermediate connection walls 47a and 47b.

The intermediate partition portion 47 includes an inner region 47c (space; hereinafter referred to as a partition portion inner space) surrounded by a pair of intermediate connection walls 47a and 47b and a protruding wall portion 47c protruding from the pair of side wall portions 45, respectively. ) Is secured.
The intermediate partition portion 47 of the holding member 40 shown in FIGS. 1A and 4 has a pair of intermediate connection walls 47a and 47b and a pair of projecting wall portions 47c, and the pair of intermediate connection walls 47a and 47b. The partition portion inner space 47e is secured between them.

As shown in FIGS. 1A and 4, the back-side bar-shaped member 20 is located between the back side wall portion 43 and the intermediate partition portion 47 inside the holding member 40 (specifically, inside the holding member outer cylinder portion 46). Is inserted into the back-side bar-shaped member insertion hole 48 secured to the front side. Specifically, the back-side rod-like member insertion hole 48 is an inner region surrounded by the back side wall portion 43 of the holding member 40, the back side intermediate connection wall 47a, and the protruding wall portions 47c on both sides of the back side intermediate connection wall 47a ( Space).
The front-side bar-shaped member 30 is inserted into a front-side bar-shaped member insertion hole 49 secured between the front side wall portion 44 and the intermediate partition portion 47 inside the holding member 40 (specifically, inside the holding member outer cylinder portion 46). The Specifically, the front bar-shaped member insertion hole 49 is an inner region surrounded by the front side wall portion 44 of the holding member 40, the front side intermediate connection wall 47b, and the protruding wall portions 47c on both sides of the front side intermediate connection wall 47b ( Space).

  The back side bar-shaped member insertion hole 48 and the front side bar-shaped member insertion hole 49 are through holes that penetrate the holding member 40, respectively. The central axes of the back side bar-like member insertion hole 48 and the front side bar-like member insertion hole 49 are parallel to each other. The partition portion inner space 47 e of the holding member 40 is formed through the intermediate partition portion 47 with a central axis parallel to the central axes of the back-side rod-like member insertion hole 48 and the front-side rod-like member insertion hole 49.

The back side rod-shaped member insertion hole 48 is formed to extend to the holding member 40 with a cross-sectional dimension that coincides with a cross section perpendicular to the longitudinal direction of the back side bar-shaped member 20. The holding member 40 holds the back-side bar-shaped member 20 inserted into the back-side bar-shaped member insertion hole 48 in such a direction that the longitudinal direction of the back-side bar-shaped member 20 coincides with the central axis direction of the back-side bar-shaped member insertion hole 48.
The back-side bar-like member insertion hole 48 of the holding member 40 illustrated in FIGS. 1A and 4 extends to the holding member 40 with a cross-sectional dimension that matches the cross-section perpendicular to the longitudinal direction of the long plate-like back-side bar-like member 20. Being formed. The holding member 40 accommodates the long plate-like back side bar-like member 20 in the back side bar-like member insertion hole 48 in such a direction that both surfaces thereof are parallel to the back side wall part 43.

The front side bar-shaped member insertion hole 49 is formed to extend to the holding member 40 with a cross-sectional dimension that coincides with a cross section perpendicular to the longitudinal direction of the front side bar-shaped member 30. The holding member 40 holds the front side bar-shaped member 30 inserted into the front side bar-shaped member insertion hole 49 so that the longitudinal direction of the front side bar-shaped member 30 coincides with the central axis direction of the front side bar-shaped member insertion hole 49.
The front bar-shaped member insertion hole 49 of the holding member 40 illustrated in FIGS. 1A and 4 extends to the holding member 40 with a cross-sectional dimension that coincides with the cross section perpendicular to the longitudinal direction of the long plate-shaped front bar-shaped member 30. Being formed. The holding member 40 accommodates the long plate-like front bar member 30 in the front bar member insertion hole 49 in a direction in which both surfaces thereof are parallel to the front side wall portion 44.

  As shown in FIGS. 1A, 1 </ b> B, 5, and 7, the holding member 40 is provided at a plurality of locations on the outer surface side of the back side wall portion 43 (on the side opposite to the back side rod-shaped member insertion hole 48). Projection 43a (hereinafter also referred to as a back-side projection). The holding member 40 also includes protrusions 44a (hereinafter also referred to as front side protrusions) provided at a plurality of locations on the outer surface side of the front side wall portion 44 (on the side opposite to the front side bar-shaped member insertion hole 49).

The back side protrusion 43a of the holding member 40 shown in FIGS. 1 (a), 1 (b), 5 and 7 is formed integrally with the back side wall 43. The front projection 44 a is formed integrally with the back side wall 43 of the holding member 40.
The holding member 40 has a back side wall portion 43A with projections constituted by the back side wall portion 43 and the back side projection 43a, and a front side wall portion 44A with projections constituted by the front side wall portion 44 and the front side projection 44a.

For the holding member 40 shown in FIGS. 1A, 1B, 5 and 7, hereinafter, the direction corresponding to the center axis of the back-side rod-like member insertion hole 48 and the front-side rod-like member insertion hole 49 is defined as the extending direction. The interval direction between the back side wall portion 43 and the front side wall portion 44 is also referred to as a height direction. In addition, regarding the holding member 40, the direction perpendicular to the extending direction and the height direction (the left-right direction in FIG. 1A and FIG. 5) is also referred to as the width direction hereinafter. The width direction of the holding member 40 shown in FIGS. 1A, 1 </ b> B, 5, and 7 is the interval direction of the pair of side wall portions 45.
The protrusions 43a and 44a of the holding member 40 shown in FIGS. 1A, 1B, 5 and 7 are formed in a ridge shape extending in the extending direction of the holding member 40. Further, the back side protrusions 43 a are provided at a plurality of positions in the holding member 40 width direction of the back side wall portion 43, and the front side protrusions 44 a are provided at a plurality of positions of the front side wall portion 44 in the holding member 40 width direction.

Specifically, the back-side protrusion 43a shown in FIGS. 1A, 1B, and 5 has a triangular cross-sectional shape in which the dimension in the width direction of the holding member 40 decreases as the distance from the back side wall 43 increases toward the outer surface. The holding member 40 is formed in a ridge shape extending in the extending direction.
As shown in FIG. 4, the front-side protrusion 44a specifically has a triangular cross-section in which the dimension in the width direction of the holding member 40 decreases as the distance from the front side wall portion 44 to the outer surface side decreases. It is formed in the shape of a ridge that extends to.

The holding member 40 shown in FIGS. 1A, 1 </ b> B, 4, 5, and the like extends along the extending direction of the holding member 40 at both end portions in the width direction of the back side wall portion 43 and the front side wall portion 44. It also has elongated protrusions 43e, 44e that extend. A flat surface (protruding end surface) extending perpendicularly to the height direction of the holding member 40 is formed at the protruding ends of the end protrusions 43e and 44e.
The projecting ends of the rear projections 43 a and the end projections 43 e that project from the rear side wall 43 are located on the same virtual plane perpendicular to the height direction of the holding member 40.
The protrusions of the front protrusions 44a and end protrusions 44e protruding from the front side wall 44 are located on the same virtual plane perpendicular to the height direction of the holding member 40.

The extending directions of the back-side protrusion 43a, the end protrusion 43e, the front-side protrusion 44a, and the end protrusion 44e are not limited to the direction along the extending direction of the holding member 40, respectively. The direction may be perpendicular to the current direction.
Further, the holding member is not limited to the configuration having the end projections 43e and 44e, and a configuration without the end projections 43e and 44e can also be adopted.
The above-described configurations regarding the extending direction of the back-side protrusion 43a and the end protrusion 43e, the front-side protrusion 44a and the end protrusion 44e, and the presence or absence of the end protrusions 43e and 44e are common to the embodiments of the holding member.

As shown in FIGS. 1A and 4, a screw 71 (see FIG. 5) for fixing the holding member 40 to the structural housing 51 at the center in the surface direction of the front side wall portion 44 </ b> A with protrusions of the holding member 40. A screw insertion hole 44b (hereinafter also referred to as a front side wall portion screw hole) through which a holding member screw is also passed is formed. The front side wall screw holes 44b are formed through the thickness of the front side wall 44A with protrusions of the holding member 40.
The front side wall portion screw hole 44b is formed to penetrate the front side wall portion 44A with protrusions with a cross-sectional size through which the entire portion including the head portion 71a of the holding member screw 71 (hereinafter also referred to as a holding member screw head portion) can pass. Has been.

  As shown in FIG. 1 (a), a hole 47d (hereinafter also referred to as a front side connecting wall screw hole) through which the holding member screw 71 is passed in the central portion in the surface direction of the front side intermediate connecting wall 47b of the holding member 40. However, it is formed through the thickness of the front intermediate connecting wall 47b. The front side connecting wall screw hole 47d is formed coaxially with the front side wall screw hole 44b at a position corresponding to the front side wall screw hole 44b via the front side bar-like member insertion hole 49 in the surface direction of the front side intermediate connecting wall 47b. Yes.

The front side wall portion screw hole 44b and the front side connecting wall screw hole 47d of the holding member 40 are formed to extend in the respective central axis directions with a cross-sectional dimension through which the holding member screw 71 can pass. The front-side connecting wall screw hole 47d is formed through the front-side intermediate connecting wall 47b with a cross-sectional size through which the entire holding member screw 71 including the head 71a can pass.
A holding member screw 71 that has been passed through the front side wall portion screw hole 44b from the side opposite to the intermediate partition portion 47 can be inserted into the front side connecting wall screw hole 47d via the front side wall portion screw hole 44b.

  In the holding member 40 illustrated in FIG. 1A (the holding member 40 to which the holding member screw 71 is not screwed), holes for passing the holding member screw 71, that is, the front side wall screw hole 44b and the front side connecting wall are provided. A screw hole 47d is formed. A hole for passing the holding member screw 71 is not formed in the back side intermediate connection wall 47a of the intermediate partition portion 47 and the back side wall portion 43A with protrusions.

As shown in FIGS. 1A and 4, a screw hole 31 through which the holding member screw 71 can pass (hereinafter also referred to as a front bar member screw hole) is formed through the front bar member 30. . The front-side bar-like member screw hole 31 is formed through the long plate-like front-side bar-like member 30 in the thickness direction. The front-side bar-shaped member screw hole 31 is formed to extend to the front-side bar-shaped member 30 with a cross-sectional size through which the entire portion including the head 71a of the holding member screw 71 can pass.
In addition, the back side rod-shaped member 20 is formed in a rod shape (a long plate shape in the illustrated example) in which no screw hole is formed.

  The holding member screw 71 shown in FIG. 1A and the like is specifically a wood screw. The holding member screw 71 includes a shaft portion 71b (hereinafter also referred to as a screw shaft portion or a holding member screw shaft portion) and a head portion 71a formed thicker than the shaft portion 71b on one side in the axial direction of the shaft portion 71b. And have. A distal end portion of the screw shaft portion 71b opposite to the base end side on the head portion 71a side is formed in a tapered shape. On the side periphery of the screw shaft portion 71b, a cutting blade 71c is formed in a spiral shape that cuts into the back-side rod-shaped member 20 made of wood material and allows the screw shaft portion 71b to be screwed by rotating around the axis of the holding member screw 71. Has been.

  The holding member screw 71 is screwed into the structural member 51 constituting member for fixing the back side intermediate connecting wall 47a, the protruding back side wall portion 43A, the back side rod-like member 20, and the holding member 40 without forming a pilot hole (specifically, Is capable of exhibiting a tapping function capable of being screwed into the shaft portion 71b and can obtain a fastening force by screwing, and is not limited to wood screws. As the holding member screw 71, for example, one having a tapping screw tip C-shaped screw tip can be adopted.

The holding member screw 71 shown in FIG. 5 fixes the holding member 40 and the back-side bar-shaped member 20 to the wall base vertical member 52 c constituting the wooden wall base 52.
The holding member screw 71 is capable of screwing the shaft portion 71b without forming a pilot hole in the back side intermediate connecting wall 47a, the back side wall portion 43A with projections, the back side bar-like member 20, and the wall base vertical member 52c (with a tapping function). Adopt one that demonstrates).

  In the example shown in FIGS. 6 and 7, the holding member screw 71 plays a role of fixing the holding member 40 and the back-side bar-like member 20 to the joists 53 a and the rough plate 53 b constituting the wooden floor base 53. The holding member screw 71 used in this example can screw the shaft portion 71b without forming a pilot hole in the back side intermediate connecting wall 47a, the back side wall portion 43A with protrusions, the back side rod-like member 20, the joist 53a and the rough plate 53b. Use something that demonstrates the tapping function.

The holding member 40 is fixed to the structural housing 51 using screws 71 (screws for holding members) in a state where the back side and front side bar-like members 20 and 30 are inserted into the back side and front side bar-like member insertion holes 48 and 49. The holding member 40 is fixed to the structural casing 51 by bringing the back-side protrusion 43a into contact with the structural casing 51 (specifically, a constituent member thereof).
The holding member 40 causes the plurality of back-side protrusions 43a to abut against the flat surface of the structural housing 51 (specifically, its constituent members), so that the height direction of the holding member 40 is perpendicular to the flat surface of the structural housing 51. 51 is fixed.

  As shown in FIGS. 2, 3, and 6, the sound insulating unit 10 is assembled in a state where the back side and front side bar-shaped members 20, 30 are inserted into the back side and front side bar-shaped member insertion holes 48, 49 of the holding member 40. . The holding member 40 (the axial direction dimensions of the rod-like member insertion holes 48 and 49 on the back side and the front side) is shorter than the rod-like members 20 and 30 on the back side and the front side. In the sound insulation unit 10 shown in FIGS. 2, 3, and 6, a plurality of holding members 40 are provided at intervals in the longitudinal direction with respect to the rod-like members 20 and 30 on the back side and the front side. The back-side and front-side rod-like members 20 and 30 are held in parallel by a plurality of holding members 40. The back-side and front-side rod-like members 20, 30 extend in parallel with each other with a separation distance corresponding to the thickness direction dimension (dimension in the height direction of the holding member 40) of the intermediate partition portion 47 of the holding member 40.

  2, 3, and 6, the sound insulation unit 10 includes a structural casing 51 (in FIG. 2 and FIG. 3, a wall base vertical member 52 c of a wooden wall base 52, and in FIG. 6 a joist 53 a of a wooden floor base 53 and In order to provide the rough plate 53b), the sound insulation unit 10 in an assembled state in which the back side and front side bar-like members 20 and 30 are inserted into the back side and front side bar-like member insertion holes 48 and 49 of the holding member 40 is prepared. Then, as shown in FIGS. 5 and 7, the holding member 40 and the back-side bar-like member 20 of the sound insulation unit 10 are made up of the structural members 51 of the structural casing 51 using the holding member screws 71 (in FIG. 5, wall base vertical members 52c, In FIG. 7, it fixes to the joist 53a and the rough board 53b). The holding member 40 fixed to the structural member of the structural housing 51 causes the back side protrusion 43 a to abut on the structural housing 51.

As shown in FIGS. 1 and 5, the holding member 40 and the back-side rod-like member 20 of the sound insulation unit 10 in the assembled state are placed on the front side of the holding-side member screw holes 44 b and the front-side rod-like member screw holes 31 of the holding member 40. It can be fixed to the structural housing 51 using the holding member screw 71 inserted from above.
The holding member screws 71 are inserted from the front end side of the shaft portion 71b into the front side wall screw holes 44b of the holding member 40 and the front side rod member screw holes 31 communicated with the front side wall screw holes 44b. The holding member screw 71 includes a shaft portion 71b inserted into the partitioning portion inner space 47e from the front side rod-like member screw hole 31 through the front side connecting wall screw hole 47d of the holding member 40, and the rear side intermediate connecting wall 47a and the back side rod-like member 20. Then, it penetrates through the back side wall portion 43A with protrusions and is screwed into the structural member 51 constituting member on the back side of the holding member 40. The holding member screw 71 includes a screw head portion 71a that is in contact with the back side intermediate connecting wall 47a of the holding member 40 and a structural casing 51 that is screwed into the screw shaft portion 71b (in FIG. 5, a wall base vertical member 52c, FIG. 7, the back side intermediate connecting wall 47 a, the portion of the back side bar-shaped member 20 located in the back side bar-shaped member insertion hole 48, and the back side wall part 43 A with protrusions are fixed (tightened). To do.

Holes for passing the holding member screw shaft 71b are not formed in the back side intermediate connecting wall 47a, the back side rod-like member 20, and the protruding back side wall portion 43A before passing through the holding member screw shaft portion 71b.
The holding member screw 71 allows the shaft portion 71b inserted into the partitioning portion inner space 47e to be screwed and penetrated from the partitioning portion inner side space 47e to the back side intermediate connection wall 47a, the back side bar-like member 20, and the protruding back side wall portion 43A. Screw into the structural member 51 constituting member on the back side of the member 40.

  For example, the front bar member 30 adjusts the insertion position with respect to the holding member 40 in the extending direction of the holding member 40 so that the front bar member screw hole 31 communicates with the front side wall screw hole 44 b of the holding member 40. The front-side rod member screw hole 31 communicates with the front-side connection wall screw hole 47d by communicating with the front-side wall screw hole 44b of the holding member 40.

  The head 71a of the holding member screw 71 is inserted into the partition portion inner space 47e from the front side of the holding member 40 through the front side wall portion screw hole 44b, the front side rod-like member screw hole 31, and the front side connection wall screw hole 47d. The holding member screw 71 can be screwed toward the structural housing 51 on the back side of the holding member 40 until the head 71a contacts the back side intermediate connection wall 47a of the holding member 40.

  The holding member screw shaft portion 71b includes a back side intermediate connecting wall 47a, a back side rod-like member 20, and a back side wall portion with protrusions in a state in which the holding member screw head portion 71a is in contact with the back side intermediate connecting wall 47a of the holding member 40. The length dimension (axis direction dimension) that can be screwed into the structural member 51 constituting member that penetrates 43A and fixes the holding member 40 is secured. The screw shaft portion 71b of the holding member screw 71 is screwed into the back side intermediate connection wall 47a to the back side of the holding member 40 until the holding member screw head portion 71a comes into contact with the back side intermediate connection wall 47a of the holding member 40. It penetrates the back side intermediate connection wall 47a, the back side rod-like member 20, and the back side wall part 43A with projections and is screwed into the structural housing 51 constituting member. The shaft portion 71b of the holding member screw 71 in which the screw head portion 71a is brought into contact with the back side intermediate connection wall 47a of the holding member 40 by screwing the holding member 40 to the back side thereof is screwed into the structural member 51 constituting member. ing.

  As shown in FIGS. 5 and 7, the back-side bar-like member 20 inserted into the back-side bar-like member insertion hole 48 of the holding member 40 is the back side surface of the back-side intermediate connection wall 47 a of the holding member 40 (the back-side bar-like member insertion hole 48 side). And the entire surface on the front side of the back side wall portion 43 (the surface on the back side rod-shaped member insertion hole 48 side). The back-side bar-shaped member 20 is a portion including a virtual extension of the front side wall portion screw hole 44b in each of the center portion in the surface direction of the back side intermediate connection wall 47a of the holding member 40 and the center portion in the surface direction of the back side wall portion 43. It is in contact.

  The back-side bar-shaped member 20 serves as a spacer that prevents the back-side intermediate connecting wall 47 a of the holding member 40 and the center portions in the surface direction of the back-side wall portion 43 from approaching each other. For this reason, when the holding member 40 is fixed (screwed) to the structural member 51 constituting member using the holding member screw 71, the back side intermediate connection of the holding member 40 pressed against the head 71 a of the holding member screw 71. It is possible to prevent the wall 47a from being deformed and approaching the back side wall portion 43. As a result, the shape of the holding member 40 is stably maintained, and the screw shaft 71b for the holding member can be screwed into the structural member 51 of the structural housing 51 efficiently and accurately (the central axis of the holding member screw 71 is the front side wall screw). It is possible to match the center axis of the hole 44b or the error is small).

  The holding member 40 of the sound insulation unit 10 in the assembled state is attached to the structural housing 51 by being fixed to the structural housing 51 constituting member together with the back-side bar-shaped member 20 by the holding member screws 71. The sound insulation unit 10 in the assembled state is provided in the structural housing 51 by fixing the holding member 40 together with the back-side bar-shaped member 20 to the structural housing 51.

The back-side rod-like member 20 and the front-side rod-like member 30 of the sound insulation unit 10 are used by appropriately cutting the length by cutting or the like until the sound insulation unit 10 in the assembled state is fixed to the structural housing 51.
The back side bar-like member 20 and the front side bar-like member 30 made of a wood material that can be cut using a hand tool such as a saw are compared with metal members (for example, the metal front side frame member and back side frame member of Patent Document 1). Easy to cut on site.

Further, when a metal member is cut using an electric tool, a spark is generated at the time of cutting. Therefore, it is necessary to secure a cutting work place free from combustible materials such as wood and perform the cutting work. On the other hand, the back-side rod-like member 20 and the front-side rod-like member 30 made of wood material of the sound insulation unit 10 do not generate sparks when cutting with a hand tool or a power tool, and have a high degree of freedom in selecting a cutting work place. . The back-side bar-shaped member 20 and the front-side bar-shaped member 30 made of a wood material of the sound insulating unit 10 can be cut at a place convenient for the construction of the sound insulating unit 10 with respect to the structural casing 51, for example, by cutting in a building.
For this reason, the back-side bar-shaped member 20 and the front-side bar-shaped member 30 made of a wood material that can be cut using a hand tool such as a saw include attachment to the structural casing 51 of the sound insulating unit 10 (including cutting of the back-side and front-side bar-shaped members). ) Is advantageous in terms of improving efficiency (reducing construction time, etc.).

Here, as shown in FIG. 2 and FIG. 3, the relationship between the structural housing 51 and the attachment 60 and the sound insulation unit 10 will be described more specifically by taking a wall 54 using the sound insulation unit 10 as an example.
In the wall 54 shown in FIGS. 2 and 3, the sound insulation unit 10 is formed by aligning the longitudinal direction of the back side and front side bar-shaped members 20, 30 with the longitudinal direction of the wall base longitudinal member 52 c and using the holding member screws 71. It is fixed to the base vertical member 52c.
The holding member 40 is fixed to the wall base vertical member 52c with the back-side protrusion 43a abutting against the front end surface of the wall base vertical member 52c.
The sound insulating unit 10 is provided on the front side of the wall base vertical member 52c so that the longitudinal direction of the back side and front side bar-shaped members 20 and 30 coincides with the extending direction (longitudinal direction) of the wall base vertical member 52c extending in the vertical direction. It has been.

As shown in FIG. 2, a fiber sound absorbing material 81 such as glass wool or rock wool is provided between the sound insulating units 10 adjacent in the horizontal direction.
In FIG. 2, a fiber sound absorbing material 81 is formed in a mat shape by collecting a number of fibers such as glass wool and rock wool known as fiber sound absorbing materials. In FIG. 2, the fiber sound absorbing material 81 is embedded between the sound insulating units 10 adjacent in the horizontal direction.

As shown in FIG. 5, the holding member screws 71 for fixing the sound insulating unit 10 to the wooden wall base 52 are provided on the back side intermediate connection wall 47 a of the holding member 40 and on the inside of the holding member outer cylinder portion 46 of the back side rod-shaped member 20. A shaft portion 71b penetrated through the inserted portion and the back side wall portion 43A with protrusions is screwed into the wall base vertical member 52c.
The rear side protrusion 43a of the holding member 40 is pressed (pressed) against the wall base vertical member 52c by the tightening force of the holding member screw 71.

  As shown in FIG. 5, the interior plate 61 of the wall 54 is a screw 72 (hereinafter referred to as “attachment”) that is screwed into the front-side bar-shaped member 30 through the front side wall portion 44 </ b> A with protrusions of the holding member 40 of the sound insulation unit 10. It is fixed to the front side rod-shaped member 30 by a screw). The screw 72 for attachments shown in FIG. 5 screws the shaft part 72b screwed and penetrated from the front side of the interior plate 61 into the front side wall portion 44A with the projection of the holding member 40 and the interior plate 61 arranged on the front side thereof, and is screwed into the front side rod-shaped member 30. . The head 72 a of the attachment screw 72 is arranged on the front side of the interior plate 61. The attachment screw 72 is tightened between the front side wall portion with projections 44A of the holding member 40 and the interior plate 61 between the front side rod-shaped member 30 into which the shaft portion 72b is screwed and the head portion 72a disposed on the interior side of the interior plate 61. Fix it.

  The front bar member 30 serves as a spacer that prevents deformation approaching the intermediate partition 47 of the front side wall 44 of the holding member 40. For this reason, as shown in FIG. 5, the front side bar-shaped member 30 is fixed to the front side bar-shaped member 30 by using the attachment-use screw 72, as the attachment-use screw 72 is screwed. The deformation | transformation which approaches the intermediate partition part 47 of 44 A of front side walls with a protrusion pressed by is prevented. As a result, the interior board 61 can be attached to the wooden wall base 52 in a desired attachment direction. Moreover, the screwing operation of the attachment screw 72 (specifically, the shaft portion 72b) to the interior plate 61, the front side wall portion 44A with protrusions of the holding member 40, and the front side rod-shaped member 30 can be performed efficiently.

  As shown in FIG. 5, the interior plate 61 is fixed to the front bar member 30 together with the front side wall portion 44 </ b> A with the protrusions by the attachment screws 72 with the back surface thereof abutting against the front side protrusions 44 a of the holding member 40. The The interior board 61 is attached to the wooden wall base 52 via the sound insulation unit 10 by being fixed to the front bar member 30. That is, the interior board 61 fixed to the front bar member 30 is supported by the wooden wall base 52 via the back bar member 20, the holding member 40, and the front bar member 30.

  The flat interior plate 61 abuts the back surface thereof with the plurality of front side protrusions 44a of the holding member 40 (in FIG. 5, contacts with the plurality of front side protrusions 44a and end protrusions 44e). It is fixed to the front bar member 30 with screws in a direction perpendicular to the height direction of 40 (parallel to the front surface of the wall base). The plurality of front side protrusions 44 a of the holding member 40 serve to support the interior board 61 in a direction perpendicular to the height direction of the holding member 40.

Note that the attachment screw 72 (specifically, the shaft portion 72b) shown in FIG. 5 does not penetrate the front bar member 30 when the head portion 72a abuts against the interior plate 61. What has the axial direction dimension which does not reach the partition part 47 and the back side rod-shaped member 20 is employ | adopted.
The attachment screw 72 is preferably such that the shaft portion 72b does not reach the back-side bar-shaped member 20 when the head 72a abuts against the front-side bar-shaped member 30, and is attached to the intermediate partition 47 and the back-side bar-shaped member 20 of the holding member 40. Those that do not reach are more preferred.

For example, the sound energy (vibration energy) given to the interior board 61 by the sound generation in the living space S of the building 50 is applied directly to the holding member 40 in contact with the interior board 61 or by the mounting screws 72. Is transmitted to the holding member 40 from the front-side bar-shaped member 30 fixed to.
On the other hand, the sound energy (vibration energy) applied to the wooden wall base 52 is held by the holding member 40 in contact with the wooden wall base 52 directly or from the back-side bar-like member 20 fixed to the wooden wall base 52 by the holding member screw 71. It is transmitted to the member 40.

However, in the sound insulating unit 10, the front bar member 30 to which the interior plate 61 is fixed is held by the holding member 40 so as to be separated from the back bar member 20. In the configuration of FIG. 5, for fixing screws to the front bar member 30 of the interior board 61, mounting screws 72 different from the holding member screws 71 for fixing the holding member 40 and the back bar member 20 to the wooden wall base 52 are provided. Used. The sound insulation unit 10 does not have a member for fixing the front bar member 30 to the back bar member 20. The front bar member 30 is held only by the rubber holding member 40 with respect to the back bar member 20. The front side bar-shaped member 30 can be finely moved with respect to the back side bar-shaped member 20 within a range in which the holding member 40 can be elastically deformed.
The rubber holding member 40 absorbs vibration energy that is transmitted from one of the back-side bar-shaped member 20 and the front-side bar-shaped member 30 to the other. For this reason, the sound insulation unit 10 suppresses or prevents transmission of vibration energy (sound energy) from one of the interior plate 61 and the back-side bar-shaped member 20, the wooden wall base 52 and the front-side bar-shaped member 30 to the other.

Further, as can be seen with reference to FIG. 5, in the wall 54, the shaft portion 72 b of the mounting screw 72 for fixing the interior plate 61 to the front-side bar-shaped member 30 is the front side wall in the front side wall portion 44 </ b> A with protrusions of the holding member 40. It penetrates through a position avoiding the partial screw hole 44b and is screwed into a position avoiding the screw hole 31 in the front side bar-shaped member 30.
On the other hand, the holding member screw 71 for fixing the holding member 40 and the back-side bar-like member 20 to the wooden wall base 52 is provided on the extension of the front side wall portion screw hole 44b.
That is, the mounting screw 72 is screwed into the sound insulation unit 10 at a position different from the holding member screw 71 in the extending direction of the wall base front surface.
For this reason, the sound insulation unit 10 does not cause a problem that the sound inside and outside the room leaks through the wood screw or the like in the first prior art described above.

As shown in FIG. 1A, FIG. 4, and FIG. 5, the back side bar-shaped member 20 is inserted into the back side bar-shaped member insertion hole 48 of the holding member 40. The front bar member 30 is inserted into the front bar member insertion hole 49 of the holding member 40.
For this reason, the sound insulation unit 10 can reliably prevent the back-side bar-like member 20 and the front-side bar-like member 30 from being detached from the holding member 40 in the operation of attaching the sound insulation unit 10 to the wooden wall base 52 (structure housing 51). As a result, the sound insulation unit 10 can improve the work efficiency of the installation work on the wooden wall base 52 and the construction of the wall 54 as compared with the shielding structure material described in Patent Document 1.

  As described above, the holding member 40 has the back-side protrusion 43a. The contact of the back-side protrusion 43a of the holding member 40 with the wall base vertical member 52c (structural casing 51) of the wooden wall base 52 temporarily causes the flat back side wall portion 43 without the back-side protrusion 43a to the wall base vertical member 52c. Compared with the case where it abuts, the part which abuts against the wall base vertical member 52c can be reduced. The contact of the back side protrusion 43a of the holding member 40 with the wall base vertical member 52c is greater than the case where the flat back side wall portion without the back side protrusion 43a is in surface contact with the wall base vertical member 52c. This effectively contributes to suppression of propagation of sound energy (vibration energy) between the back side wall 43 and the wall base vertical member 52c.

As shown in FIG. 5, the front-side protrusion 44 a of the holding member 40 is effective in suppressing the propagation of sound energy (vibration energy) between the holding member 40 and the surface plate 61 that contacts the holding member 40 from the front side. Contribute.
The back-side protrusion 43a and the front-side protrusion 44a of the holding member 40 effectively contribute to improving the soundproof performance of the wall 54.
The sound insulation unit 10 is easily constructed by adopting a holding member 40 having a rear side wall portion 43A with projections and a front side wall portion 44A with projections (the back side bar member 20 and the front side bar member 30 are detached from the holding member 40). And excellent soundproofing effect can be easily secured.

As described above, the back-side protrusion 43a and the front-side protrusion 44a of the holding member 40 illustrated in FIG. 5 are formed in a ridge shape having a triangular cross section and extending in the extending direction of the holding member 40.
The back-side protrusion 43a and the front-side protrusion 44a are in contact with the structural housing 51 constituting member and the attachment 60 in terms of suppressing propagation of sound energy (vibration energy) between the structural housing 51 constituting member and the attachment 60 in contact therewith. It is preferable to keep the portion small. Further, the back-side protrusion 43a and the front-side protrusion 44a do not cause large deformation such as buckling with respect to the tightening force caused by screwing with the structural housing 51 constituting member or the attachment 60, and only the projecting end portion is the structural housing 51 constituting member or It is preferable that the state in contact with the attachment 60 can be kept stable.

For example, the back-side protrusion 43a and the front-side protrusion 44a having a ridge shape extending in a triangular cross section have a cross-sectional width dimension perpendicular to the height direction of the holding member 40 in a cross section perpendicular to the extending direction. Compared with a protrusion having a rectangular cross section throughout, the contact portion between the structural member 51 and the attachment 60 can be kept small. Further, the back-side protrusion 43a and the front-side protrusion 44a do not cause large deformation such as buckling with respect to the tightening force due to screwing, and can stably maintain a state in which only the protruding end portion is in contact with the structural member 51 and the attachment 60. .
It is preferable that the protrusion-shaped rear-side protrusion 43a and the front-side protrusion 44a extending in a triangular cross-section have an opening angle of a protruding end portion in a cross section perpendicular to the extending direction of about 60 to 150 degrees.

The wood material forming the back-side bar-shaped member 20 is a porous material in which a large number of minute voids exist.
As shown in FIG. 5, the back side of the holding member 40, the front side bar-shaped member insertion holes 48 and 49, an air layer is formed by minute gaps existing in the back side and the front side bar-shaped members 20 and 30 inserted inside each. Secured.

The propagation path of the sound energy between the back side wall portion 43A with projections and the intermediate partition portion 47 and the front side wall portion with projections 44A and the intermediate partition portion 47 by the vibration of the holding member 40 itself in the holding member 40 is maintained. It is limited to the back side in the side wall part 45 on both sides of the member 40, and the portions 45a and 45b (the back side plate part 45a and the front side plate part 45b) located on both sides in the holding member 40 width direction of the front side bar-shaped member insertion holes 48 and 49.
Further, the back side and the front side bar-like members 20 and 30 inserted into the back side and front side bar-like member insertion holes 48 and 49 have the shape of the portion located around the rear side of the holding member 40 and the front side bar-like member insertion holes 48 and 49. It keeps it in a role and prevents its deformation. The back side and the front side bar-like members 20 and 30 inserted into the back side and front side bar-like member insertion holes 48 and 49 are the sound energy due to the vibration of the parts located around the back side of the holding member 40 and the front side bar-like member insertion holes 48 and 49. Suppress or prevent the propagation of
Accordingly, the sound insulation unit 10 can suppress or prevent the propagation of sound energy due to the vibration of the holding member 40 itself between the wooden wall base 52 (structure housing 51) and the interior board 61 (attachment 60).

The sound that propagates through the air layer in the back side and front side bar-like members 20 and 30 inserted into the back side and front side bar-like member insertion holes 48 and 49 is caused by a large number of minute gaps existing in the back side and front side bar-like members 20 and 30. Diffused. Part of the sound propagating through the air layer in the back and front bar members 20 and 30 due to the vibration is released to the outside of the sound insulation unit 10 and is absorbed (sound absorbed) by the fiber sound absorbing material 81 (see FIG. 2).
As a result, the sound insulation unit 10 can reduce (reduce) the sound transmitted between the wooden wall base 52 (structure housing 51) and the interior board 61 (attachment 60) via the sound insulation unit 10. The sound insulation unit 10 can enhance the sound insulation between the wooden wall base 52 and the interior board 61. The sound insulation unit functions as a sound propagation suppression unit that suppresses (reduces) or prevents the propagation of sound between the structural housing and the attachment. The sound insulating unit blocks (sound-insulates) a part or all of the sound to be transmitted between the structural frame and the attachment.

The sound energy transmitted between the back side wall portion 43 and the intermediate partition portion 47 due to the vibration of the air layer in the back side bar-shaped member 20 increases as the separation distance between the back side wall portion 43 and the intermediate partition portion 47 decreases. The larger the separation distance, the smaller. In terms of enhancing the sound insulation between the wooden wall base 52 (structural frame 51) and the interior board 61 (attachment 60), it is advantageous that the separation distance between the back side wall 43 and the intermediate partition 47 is large. is there.
The sound energy transmitted between the front side wall portion 44 and the intermediate partition portion 47 due to the vibration of the air layer in the front side bar-shaped member 30 increases as the separation distance between the front side wall portion 44 and the intermediate partition portion 47 decreases. The larger the separation distance, the smaller. In terms of enhancing the sound insulation between the wooden wall base 52 (structural frame 51) and the interior board 61 (attachment 60), it is advantageous that the separation distance between the back side wall 43 and the intermediate partition 47 is large. is there.

  As described above, the sound insulation unit 10 can stably maintain the shape of the portion located around the back side of the holding member 40 and the front side bar-like member insertion holes 48 and 49 by the back side and front side bar-like members 20 and 30. For this reason, the sound insulation unit 10 can be used for the holding member 40 even if the separation distance between the back side wall portion 43 and the intermediate partition portion 47 or the separation distance between the front side wall portion 44 and the intermediate partition portion 47 is increased. The shapes of the portions located around the back side and front side bar-shaped member insertion holes 48 and 49 can be stably maintained, and the desired sound insulation can be stably obtained.

  By the way, for example, the back plate of the shielding member of the shielding structure material described in FIG. 3, FIG. 5, paragraphs (0016), (0017), etc. of the aforementioned Patent Document 1 is greatly bent and deformed by screwing to the structure housing. Is done. In the configuration described in FIG. 3 and the like of Patent Document 1, in the screwing operation of the screw for fixing the back plate of the shielding member to the structural case, the screw is oriented in the direction perpendicular to the flat plate-like back plate before screwing. There is a risk of tilting.

  On the other hand, the sound insulation unit 10 illustrated in FIG. 5 has a back-side bar shape inserted into the back-side bar-like member insertion hole 48 of the holding member 40 when the holding member 40 is screwed to the wall base vertical member 52c. The member 20 prevents the rear side intermediate connecting wall 47 a of the holding member 40 from being deformed such that the center portion in the surface direction approaches the back side wall portion 43. The sound insulating unit 10 can stably maintain a state in which the back side intermediate connecting wall 47a is in a flat plate shape perpendicular to the height direction of the holding member 40 when the holding member 40 is screwed to the wooden wall base 52. For this reason, the sound insulation unit 10 can easily realize screwing the holding member screw 71 into the wooden wall base 52 or the like in a direction along the height of the holding member 40 and a perpendicular to the front surface of the wooden wall base 52.

The inclination of the holding member screw 71 screwed into the back side intermediate connecting wall 47a of the holding member 40, the back side bar-like member 20, the protruding back side wall portion 43A, and the wooden wall base 52 from the perpendicular to the front surface of the wooden wall base 52 If it is large, the pressing force of the holding member 40 against the wooden wall base 52 due to the tightening force of the holding member screw 71 is unevenly distributed, which may reduce sound insulation.
The structure of the sound insulation unit 10 in which the holding member screw 71 can be easily screwed into the wooden wall base 52 or the like in the height direction of the holding member 40 and in a direction along the perpendicular to the front surface of the wooden wall base 52 is configured as follows. 71 is advantageous in terms of equalizing the pressing force of the holding member 40 against the wooden wall base 52 and ensuring the desired sound insulation.

  In the sound insulation unit 10 in the assembled state, the intermediate partitioning portion 47 of the holding member 40 is sandwiched by the back and front bar-like members 20 and 30 from both sides in the height direction of the holding member 40. The sound insulation unit 10 supports the interior plate 61 (attachment 60) fixed to the front bar member 30 with respect to the wooden wall base 52 (structure housing 51) via the holding member 40 and the back bar member 20.

  The holding member 40 of the sound insulation unit 10 in the assembled state is such that the intermediate partition portion 47 is elastically deformed according to the relative displacement force between the back-side bar-like member 20 and the front-side bar-like member 30, so that the holding member 40 itself or the back side, The holding state of the back side and the front bar members 20 and 30 can be kept stable without causing damage or destruction to the front bar members 20 and 30. The sound insulation unit 10 is configured so that the interior plate 61 can be used as a base for a wooden wall even if relative displacement occurs between the back-side bar-shaped member 20 and the front-side bar-shaped member 30 (however, relative displacement within the elastically deformable range of the intermediate partition 47). The state supported by 52 can be stably maintained.

  The rear projection 43a and the front projection 44a of the holding member 40 shown in FIG. 5 and the like not only suppress propagation of sound energy (vibration energy) between the structural casing 51 and the attachment 60 in contact with the structural casing 51, but also the structural casing 51. This also effectively contributes to suppression of heat propagation between the component members and the attachment 60. The holding member 40 having the back-side protrusion 43a and the front-side protrusion 44a effectively contributes to the improvement of the heat insulation of the wall 54 (the improvement of the heat insulation between the structural housing 51 and the attachment 60).

  Further, the sound insulation unit 10 uses the back side and front side bar-shaped members 20 and 30 made of a wood material having lower thermal conductivity (higher heat insulation) than metal. For this reason, the sound insulation unit 10 has a heat insulating property between the structural housing 51 and the attachment 60 as compared with a configuration using a metal front side frame member and a back side frame member like the shielding structure material of Patent Document 1, for example. It is advantageous for improvement.

  As shown in FIG. 5, in the sound insulation unit 10, the holding member screws 71 that are penetrated through the back-side bar-shaped member 20 made of a wood material having lower thermal conductivity (higher heat insulation) than metal are provided on the wooden wall base 52. Screw in. The structure in which the holding member screw 71 is passed through the back-side bar-like member 20 made of a wood material is a portion of the holding member screw 71 located on the side of the living space S from the wooden wall base 52 (hereinafter also referred to as an indoor side protruding portion). Contributes effectively to the prevention of condensation around

The holding member screw 71 is made of metal. The temperature of the holding member screw 71 screwed into the wooden wall base 52 (specifically, its constituent members) is easily affected by the temperature of the wooden wall base 52.
The wall 54 shown in FIGS. 2 and 3 is an outer wall of the building 50 or a partition wall inside the building 50.
As an example, the case where the wall 54 is the outer wall of the building 50 will be described. In this case, when the outside air temperature and the temperature of the portion of the wall 54 screwed into the wooden wall base 52 of the holding member screw 71 are lower than the temperature in the living space S of the building 50, the chamber of the holding member screw 71. The inner protrusion tends to be a temperature between the temperature of the wooden wall base 52 and the temperature in the living space S.

Temporarily, the back side rod-like member 20 is omitted from the sound insulation unit 10 shown in FIG. 5, and the entire portion (hereinafter also referred to as an insertion hole exposed portion) located in the back side rod-like member insertion hole 48 in the holding member screw 71 is entirely. In the state of being in direct contact with the air in the back-side rod-like member insertion hole 48, the holding member screw 71 is held if the temperature of the exposed portion in the insertion hole is lower than the air temperature in the back-side rod-like member insertion hole 48 and the temperature difference is large. Condensation may occur on the surface of the exposed portion in the insertion hole of the member screw 71.
Condensation on the surface of the exposed portion in the insertion hole of the holding member screw 71 is caused by the movement of air in contact with the surface of the exposed portion in the insertion hole of the screw 71 for holding member, so that moisture contained in the air is formed on the surface of the exposed portion in the insertion hole The amount of generation increases as it condenses sequentially.

On the other hand, the air in the back-side rod-like member 20 that penetrates the holding member screw shaft 71b is held in a minute gap in the back-side rod-like member 20 made of a wood material, and hardly moves.
Further, when the temperature of the portion (hereinafter also referred to as a rod-shaped member insertion portion) of the holding member screw shaft portion 71b located in the back-side rod-shaped member 20 is different from the air temperature around the back-side rod-shaped member 20, it is made of a wood material. The temperature of the air layer in the back-side rod-shaped member 20 becomes an intermediate temperature between the rod-shaped member insertion portion temperature of the holding member screw 71 and the air temperature around the back-side rod-shaped member 20.
For this reason, in the sound insulation unit 10, when the temperature inside the rod-like member insertion portion of the holding member screw 71 is lower than the air temperature around the back-side rod-like member 20, the back-side rod-like member 20 causes the inside of the rod-like member of the holding member screw 71 to Condensation on the surface of the insertion portion can be prevented.

If the surface temperature of the head 71a of the holding member screw 71 is brought close to the air temperature around the back-side bar-shaped member 20, condensation on the surface of the head 71a is less likely to occur.
When the temperature of the rod-like member insertion portion of the holding member screw 71 is different from the air temperature around the back-side rod-shaped member 20, heat energy is transferred to and from the back-side rod-shaped member 20. As a result, the rod-like member insertion portion of the holding member screw 71 is closer to the air temperature around the back-side rod-shaped member 20 at the end on the back-side intermediate connecting wall 47a side than the end on the wooden wall base 52 side. There is a tendency to become temperature. In the sound insulating unit 10, the length of the rod-like member insertion portion of the holding member screw 71 (hereinafter, also referred to as a rod-like member penetrating shaft length) increases as the cross-sectional dimension of the back-side rod-like member 20 in the holding member 40 height direction increases. This is advantageous in that the temperature of the head portion 71a of the holding member screw 71 is brought close to the air temperature around the back-side rod-shaped member 20.
The sound insulation unit 10 has a dew condensation on the surface of the screw head 71a for the holding member by setting the dimension in the height direction of the holding member 40 at a portion located on the extension of the front side wall screw hole 44b of the holding member 40 in the back bar member 20. Prevention can be realized easily.

The cutting blade 71c of the holding member screw 71 is formed over the entire axial length of the holding member screw shaft portion 71b.
There are no gaps through which air can flow between the back side intermediate connection wall 47a of the holding member 40 into which the holding member screw 71 is screwed, the back side bar-shaped member 20, the back side wall portion 43A with protrusions, the wooden wall base 52 and the holding member screw 71. It becomes a substantially close state. For this reason, the rod-like member insertion portion of the holding member screw 71 is in a state where its side periphery is covered with the air layer in the back-side rod-like member 20.
Further, in the holding member screw shaft portion 71b, the side periphery of the portion of the holding member 40 that penetrates through the back side intermediate connection wall 47a and the back side wall portion 43A with protrusions is a rubber back side intermediate connection wall 47a and the back side wall with protrusions. It will be in the state covered with part 43A. For this reason, dew condensation is unlikely to occur on the side periphery of the portion of the holding member screw shaft portion 71b penetrating the back side intermediate connecting wall 47a and the protruding back side wall portion 43A.

As shown in FIG. 1A, the holding member 40 extends on the inner surface (in other words, the protruding end surface of the protruding wall portion 47c protruding from the side wall portion 45) facing the partitioning portion inner space 47e of the protruding wall portion 47c. A groove 47o (hereinafter also referred to as a partition inner groove) extending in the direction is formed.
Further, a groove 47p (hereinafter referred to as a side surface central groove) extending in the extending direction of the holding member 40 also on the outer surface (side surface of the holding member) opposite to the protruding wall portion 47c of the side wall 45 on both sides of the holding member 40. Say) is formed. The side surface center groove 47p is formed at two locations separated from each other in the height direction of the holding member 40.
The partition part inner side groove | channel 47o is formed between the two side surface center part groove | channels 47p spaced apart from each other in the holding member 40 height direction.

The grooves 47o, 47p on both sides in the width direction of the holding member 40 are formed for adjusting the bending strength of the holding member 40 and the compressive strength against the holding member height direction compression force. If the formation depth of the grooves 47o and 47p is deep, the bending strength of the holding member 40 and the compressive strength against the compression force in the height direction of the holding member are low, and if the formation depth of the grooves 47o and 47p is shallow, the bending of the holding member 40 is reduced. The compressive strength against the strength and compressive force in the holding member height direction is increased.
For example, the holding member 40 has different formation depths of the grooves 47o and 47p depending on, for example, stable support of the load of the attachment 60 that supports the structural housing and securing of required cushioning properties. It is possible to select and use.

The grooves 47o and 47p of the holding member 40 illustrated in FIG. 1A are V-grooves, but the grooves 47o and 47p are not limited to V-grooves. For example, U-grooves, semicircular grooves, etc. It can be adopted.
Further, the holding member is not limited to the configuration having the grooves 47o and 47p, and a configuration without the grooves 47o and 47p can also be adopted.

As described above, the sound insulation unit 10 can also be used for the floor 55 of the building 50 (see FIGS. 6 and 7).
In the floor 55 shown in FIG. 7, the sound insulation unit 10 causes the rear projection 43 a of the holding member 40 to abut against the rough plate 53 b and the front projection 44 a to abut against the floor main body base plate 62. And the floor main body base plate 62.

As shown in FIG. 6, the sound insulating unit 10 of the floor 55 is provided on the joist 53a with the longitudinal direction of the rod-like members 20 and 30 on the back side and the front side aligned with the joist 53a longitudinal direction.
In the floor 55 shown in FIG. 6, a plurality of sound insulation units 10 are provided with the longitudinal directions of the back-side and front-side rod-like members 20 and 30 aligned in parallel with each other. The floor main body base plate 62 is supported by the sound insulation unit 10 in parallel with the floor base front surface, and constitutes a wall-like body extending in parallel with the floor base front surface.

  As shown in FIG. 7, the sound insulating unit 10 is fixed to the wooden floor base 53 using a holding member screw 71. The shaft portion 71b of the holding member screw 71 shown in FIG. 7 is penetrated by the back side intermediate connection wall 47a of the holding member 40, the back side bar-like member 20, the back side wall portion 43A with protrusions, and the rough plate 53b. 53b is screwed into a joist 53a located on the back side (lower side). In FIG. 7, the holding member screw shaft portion 71 b passes through a portion of the back side bar-shaped member 20 that is inserted into the back side bar-shaped member insertion hole 48 of the holding member 40.

The holding member screw 71 in FIG. 7 is disposed between a head 71a disposed in the partitioning portion inner space 47e of the holding member 40 and abutted against the back side intermediate connection wall 47a, and a joist 53a into which the shaft portion 71b is screwed. The back side intermediate connecting wall 47a, the back side bar-like member 20, the back side wall portion 43A with protrusions, and the rough plate 53b are fastened and fixed. The holding member 40 and the back-side bar-shaped member 20 of the sound insulating unit 10 are fastened together with the coarse plate 53b and the joist 53a by a holding member screw 71.
As a result, the holding member 40 and the back bar member 20 of the sound insulating unit 10 are fixed not only to the joist 53a of the wooden floor base 53 but also to the rough plate 53b.

  As shown in FIG. 7, the floor main body base plate 62 has its rear surface (lower surface) in contact with the front projection 44 a of the holding member 40, and the front rod member 30 together with the projection side wall portion 44 </ b> A by the attachment screw 72. Fastened together. The floor main body base plate 62 is attached to the wooden floor base 53 via the sound insulating unit 10 by being fixed to the front bar member 30. That is, the floor main body base plate 62 fixed to the front bar member 30 is supported by the wooden floor base 53 via the front bar member 30, the holding member 40, the back bar member 20, and the rough plate 53b.

The attachment screw 72 shown in FIG. 7 does not penetrate the front bar member 30 in a state in which the head 72 a is in contact with the floor main body base plate 62, and the intermediate partition portion 47 and the back bar member 20 of the holding member 40. A shaft portion 72b having an axial dimension that does not reach the position is employed.
The attachment screw 72 is preferably such that the shaft portion 72b does not reach the back-side bar-shaped member 20 when the head 72a abuts against the front-side bar-shaped member 30, and is attached to the intermediate partition 47 and the back-side bar-shaped member 20 of the holding member 40. Those that do not reach are more preferred.

In FIG. 7, the shaft portion 72 b of the mounting screw 72 passes through a position avoiding the front side wall portion screw hole 44 b in the projection-side front side wall portion 44 A of the holding member 40, and avoids the screw hole 31 in the front side rod-shaped member 30. Screwed into position.
A holding member screw 71 for fixing the holding member 40 and the back-side bar-like member 20 to the wooden floor base 53 is provided on an extension of the front side wall portion screw hole 44b.
That is, the mounting screw 72 is screwed into the sound insulation unit 10 at a position different from the holding member screw 71 in the extending direction of the floor base front surface.

When the sound insulating unit 10 is used for the floor 55 as shown in FIGS. 6 and 7, the rear and front bar-like members 20 and 30 are inserted into the rear and front bar-like member insertion holes 48 and 49 of the holding member 40. In the operation of attaching to the wooden floor base 53 using the holding member screws 71 in the state, it is possible to reliably prevent the back-side bar-like member 20 and the front-side bar-like member 30 from falling off the holding member 40.
Further, the sound insulating unit 10 can suppress the contact portion of the holding member 40 with respect to the wooden floor base 53 (specifically, the rough plate 53b) or the floor main body base plate 62 by the back side protrusion 43a and the front side protrusion 44a. . For this reason, if the sound insulation unit 10 is used, the floor | bed 55 excellent in soundproofing can be obtained easily.
In addition, since the sound insulation unit 10 can improve the heat insulation between the structural housing 51 and the attachment 60, the sound insulation unit 10 is provided between the floor body 55A including the wooden floor foundation 53 and the floor body foundation plate 62 (attachment 60). Contributes effectively to the improvement of heat insulation.

As shown in FIGS. 8A, 8 </ b> B, 9 </ b> A, and 9 </ b> B, the rear-side protrusions of the holding member are arranged in a plurality of locations on the outer (back side) surface of the back side wall portion. It may be a columnar or conical protrusion. The columnar protrusion (columnar protrusion) and the cone-shaped protrusion (conical protrusion) protrude from the back side wall portion to the back side of the holding member.
As the front-side protrusion of the holding member, a columnar protrusion and a cone-shaped protrusion that can be adopted as the back-side protrusion can be used. The columnar protrusions and the cone-shaped protrusions are scattered and arranged at a plurality of locations on the outer (front side) surface of the front side wall part, and project from the front side wall part to the holding member front side.

The back side projection 43b of the back side wall portion 43B with projection shown in FIGS. 8 (a) and 8 (b) is an example of a columnar projection protruding from the back side wall portion 43 over the entire length in the protruding direction with a predetermined cross-sectional dimension (the example shown is a columnar column shape). Projection).
The cross-sectional shape perpendicular to the holding member height direction of the columnar protrusion is not limited to a circle, and a polygon such as a quadrangle or a triangle can also be employed.
The back projection 43c of the back side wall portion 43C with projection shown in FIGS. 9A and 9B is an example of a tapered conical projection whose cross-sectional dimension decreases as the distance from the back side wall portion 43 increases (FIG. 9). The example shown is a conical conical projection. The cross-sectional shape perpendicular to the holding member height direction of the columnar protrusion is not limited to a circle, and a polygon such as a quadrangle or a triangle can also be employed.

A building structural member (hereinafter also referred to as a mounting target structural member) that fixes the holding member and the back-side bar-shaped member of the sound insulating unit using a holding member screw is a structural housing 51 such as a wooden wall base 52 and a wooden floor base 53. It is not limited to the structural member. The attachment target constituent member may be a building constituent member supported by the constituent member of the structural casing 51 such as a ceiling edge. When the sound insulating unit 10 is provided on the ceiling, for example, the holding member 40 and the back-side bar-shaped member 20 are fixed to the front-side bar-shaped member 30 of the sound insulating unit 10 in which the holding member screws 71 are fixed to the field edge of the ceiling. The ceiling material (attachment) is fixed using the attachment screw 72.
Moreover, the structural member to be attached may be a structural material (building structural material) such as a beam or a column exposed in the living space.

The wall interior board 61 (see FIG. 2 and the like), the floor main body base plate 62 (see FIG. 6 and the like) constituting the floor, and the ceiling material are building components. Hereinafter, the building component used for the attachment (for example, the interior plate 61 for the wall, the floor main body base plate 62, and the ceiling material) is also referred to as a building component attachment.
The attachment is not limited to a building component attachment.
For example, various devices such as an image display panel, a speaker, and an air conditioner can be used as the attachment.

The attachment is supported on the attachment target component member via the sound insulation unit by attaching the attachment to the front side rod member of the sound insulation unit fixed to the attachment target component member with the holding member and the back side rod member fixed. As already described, the attachment target constituent member is a constituent member of the structural casing 51 or a building constituent member supported by the constituent member of the structural casing 51. When the attachment target structural member to which the sound insulating unit is attached is a structural member, the attachment attached to the front bar member of the sound insulating unit is supported by the structural housing through the sound insulating unit. When the component to be attached to which the sound insulation unit is attached is a building component supported by the structural member of the structural enclosure, the attachment attached to the front bar member of the sound insulation unit is the sound insulation unit and the structural enclosure 51. It is supported by the structural frame via the building component supported by the component.
Hereinafter, the attachment target constituent member is also referred to as a housing side constituent member.

The wall interior board 61 (see FIG. 2 and the like), the floor main body base plate 62 (see FIG. 6 and the like) constituting the floor, and the ceiling material are structures that form the inner surface of the living space in the building (hereinafter referred to as inner surface formation). It is also a structural member. The inner surface forming structure includes a wall, a floor, and the like in addition to the ceiling.
The inner surface forming structure also corresponds to a roof in a building where there is no ceiling and the roof forms the upper inner surface of the living space. A structural member (building structural member) such as a roof purlin which is an inner surface forming structure can be suitably used as a structural body side structural member.

10 to 13 show another embodiment of the sound insulating unit and the holding member.
10 to 13 is different from the sound insulation unit 10 shown in FIG. 1A and the like only in the configuration of the holding member. The structure other than the holding member of the sound insulation unit shown in FIGS. 10 to 13 is the same as that of the sound insulation unit 10 shown in FIG.

The holding member 40A of the sound insulating unit 10A shown in FIG. 10 is a wall-like shape in which the partition inner space 47e is not formed in place of the intermediate partition 47 of the holding member 40 illustrated in FIG. An intermediate partition 47A is employed.
Hereinafter, the intermediate partition 47A is also referred to as an intermediate partition wall.

The holding member 40A shown in FIG. 10 is an integral molded product made entirely of rubber including the intermediate partition wall 47A. The intermediate partition wall 47A is formed integrally with the rubber holding member outer cylinder 46.
The holding member 40A is different from the holding member 40 described in FIG. 1A and the like only in that it has an intermediate partition wall 47A. The configuration of the holding member 40A other than the intermediate partition 47A is the same as that of the holding member 40 described in FIG.
In the holding member 40A of FIG. 10, the same components as those of the holding member 40 of FIG. 1A are denoted by the same reference numerals as those of FIG.

The intermediate partition portion 47A of the holding member 40A shown in FIG. 10 is formed in a wall shape extending perpendicularly to the holding member height direction between the back side wall portion 43 and the front side wall portion 44, and both sides in the holding member width direction. The side wall portions 45 are connected.
A screw shaft portion insertion hole 47f (intermediate partition portion screw hole) through which the shaft portion 71b of the holding member screw 71 is inserted is formed in the center portion in the surface direction of the intermediate partition wall 47A of the holding member 40A shown in FIG. Yes. The screw shaft insertion hole 47f is formed so as to penetrate the intermediate partition wall 47A in the holding member height direction. Further, the screw shaft portion insertion hole 47f is formed at a position corresponding to the front side wall portion screw hole 44b in the center portion in the surface direction of the intermediate partition wall 47A.
Specifically, the screw shaft portion insertion hole 47f of the holding member 40A shown in FIG. 10 is formed coaxially with the front side wall portion screw hole 44b.

The screw shaft portion insertion hole 47f of the holding member 40A shown in FIG. 10 is formed to extend with a constant cross-sectional dimension over the entire length in the axial direction (the holding member height direction). The screw shaft portion insertion hole 47f is formed to extend in a cross-sectional size in which the shaft portion 71b of the holding member screw 71 can be inserted and the head portion 71a of the holding member screw 71 cannot be inserted.
A screw shaft portion insertion hole 47f of the holding member 40A shown in FIG. 10 is a hole extending in a circular cross section. However, the cross-sectional shape perpendicular to the extending direction of the screw shaft portion insertion hole 47f is not limited to a circle. The cross-sectional shape perpendicular to the extending direction of the screw shaft portion insertion hole 47f may be a polygon such as an ellipse or a quadrangle.
The head of the holding member screw 71 having a shaft portion 71b inserted into the screw shaft portion insertion hole 47f is provided at the periphery of the opening portion of the screw shaft portion insertion hole 47f on the front surface of the holding member 40A of the intermediate partition wall 47A. 71a can be contacted from the front side of the holding member.

  The holding member 40B of the sound insulation unit 10B shown in FIG. 11 is formed with an intermediate partitioning part screw hole 47g having a configuration different from that of the screw shaft part insertion hole 47f in place of the intermediate partitioning wall 47A in the holding member 40A shown in FIG. The intermediate partition wall 47B (intermediate partition portion) is adopted. The intermediate partition wall 47B of the holding member 40B shown in FIG. 11 is different from the screw shaft part insertion hole 47f only in that an intermediate partition part screw hole 47g having a different configuration is formed. And different.

The structure of the holding member 40B shown in FIG. 11 other than the intermediate partitioning part screw hole 47g is the same as that of the holding member 40A shown in FIG.
In the holding member 40B in FIG. 11, the same reference numerals as those in FIG. 10 are assigned to the same components as those in the holding member 40A in FIG. 10, and the description thereof is omitted.

The intermediate partitioning part screw hole 47g of the holding member 40B shown in FIG. 11 includes a screw shaft part insertion hole 47h formed to extend from the back surface of the intermediate partition wall 47B toward the front side, and a holding member front side of the screw shaft part insertion hole 47h. And an expansion hole portion 47i formed larger in diameter than the screw shaft portion insertion hole 47h.
The expansion hole 47i extends from the front side surface of the intermediate partition wall 47B to the holding member back side and communicates with the holding member front side end of the screw shaft insertion hole 47h. Further, the screw shaft portion insertion hole 47h and the expansion hole portion 47i are formed coaxially with the front side wall portion screw hole 44b.
The intermediate partitioning part screw hole 47g of the holding member 40B shown in FIG. 11 is formed at a position corresponding to the front side wall part screw hole 44b in the center part in the surface direction of the intermediate partitioning wall 47B (in FIG. 11, coaxial with the front side wall part screw hole 44b). Has been.

The screw shaft portion insertion hole 47h of the intermediate partitioning portion screw hole 47g of the holding member 40B shown in FIG. 11 can be inserted into the shaft portion 71b of the holding member screw 71 and the head portion 71a of the holding member screw 71 cannot be inserted. It is formed to extend with a possible cross-sectional size.
On the other hand, the expansion hole portion 47h of the intermediate partitioning portion screw hole 47g extends and has a cross-sectional size that allows the head portion 71a and the shaft portion 71b of the holding member screw 71 to be inserted.
The screw shaft portion insertion hole 47h and the expansion hole portion 47h of the intermediate partitioning portion screw hole 47g of the holding member 40B shown in FIG. 11 are holes extending in a circular cross section. However, the cross-sectional shape perpendicular to the extending direction of the screw shaft insertion hole 47h and the expansion hole 47h is not limited to a circle. As the cross-sectional shapes perpendicular to the extending direction of the screw shaft insertion hole 47h and the extension hole 47h, for example, a polygon such as an ellipse or a quadrangle can be adopted.

The expansion hole portion 47h of the intermediate partitioning portion screw hole 47g of the holding member 40B shown in FIG. 11 can accommodate the head portion 71a of the holding member screw 71 in which the shaft portion 71b is inserted into the screw shaft portion insertion hole 47h.
At the step 47j between the expansion hole 47h of the intermediate partitioning part screw hole 47g and the screw shaft part insertion hole 47h, the head 71a of the holding member screw 71 having the shaft part 71b inserted into the screw shaft part insertion hole 47h is provided. The holding member can be brought into contact with the front side.

  The holding members 40A and 40B shown in FIGS. 10 and 11 have a simple structure and are easy to manufacture compared to the holding member 40 illustrated in FIG. In addition, the holding members 40A and 40B have a smaller number of parts than the holding member 40 illustrated in FIG. For this reason, holding member 40A, 40B shown in FIG. 10, FIG. 11 can be obtained at low cost.

The holding member 40 illustrated in FIG. 1A and the like has a housing side constituent member as compared with the holding members 40A and 40B shown in FIGS. 10 and 11 by adopting a reinforcing member 41 made of a foamed resin body excellent in heat insulation. It is possible to ensure high heat insulation between the attachment and the attachment.
Further, the holding member 40 illustrated in FIG. 1A has an advantage that the bending strength of the intermediate partition wall 47 can be easily set by selecting the bending strength of the reinforcing member 41.

As shown in FIG. 12, the holding member may have a holding protrusion 47k that protrudes toward the inner surfaces of the pair of side wall portions 45 instead of the intermediate partition portion.
A sound insulation unit 10C shown in FIG. 12 employs a holding member 40C having a holding projection 47k in place of the intermediate partition wall 47 with respect to the holding member 40 illustrated in FIG.

The holding member 40C is different from the holding member 40 illustrated in FIG. 1A and the like only in that a holding projection 47k is adopted instead of the intermediate partition wall 47. The configuration other than the holding projection 47k of the holding member 40C in the sound insulating unit 10C shown in FIG. 12 is the same as that of the sound insulating unit 10 illustrated in FIG.
In the holding member 40C of FIG. 12, the same components as those of the holding member 40 in FIG. 1A are denoted by the same reference numerals as those in FIG.

The holding protrusions 47k of the holding member 40C shown in FIG. 12 are formed integrally with the side wall portions 45 on both sides in the width direction of the holding member 40C.
The holding member 40 </ b> C shown in FIG. 12 is inserted into the inner back side bar-shaped member surrounded by the holding protrusions 47 k on the both sides in the width direction (interval direction of the pair of side wall parts 45), the back side wall part 43, and the side wall parts 45 on both sides. The back side rod-shaped member 20 can be held in the hole 48A.
The holding member 40C can hold the front bar member 30 in the inner front bar member insertion hole 49A surrounded by the holding protrusions 47k on both sides in the width direction, the front side wall part 44, and the side wall parts 45 on both sides.
When the sound insulation unit 10C using the holding member 40C is attached to the housing side component member, the back side, the back side inserted through the front side rod-like member insertion holes 48A, 49A, and the front side bar-like members 20, 30 are held by the holding member 40C. Can be kept stable.

The holding projections 47k on both sides in the width direction of the holding member 40C shown in FIG. 12 do not exist on the extension of the front side wall screw holes 44b. The holding protrusions 47k on both sides in the width direction of the holding member 40C are provided to be separated from each other on both sides in the holding member width direction via a virtual extension of the front side wall screw holes 44b.
The sound insulation unit 10C shown in FIG. 12 has a back side bar-like member 20 by a head 71a of a holding member screw 71 in which a shaft part 71b penetrating the front side bar-like member 30 and the back side wall part 43A with projections is screwed into a housing side component member. Can be fastened and fixed to the housing side constituent member together with the rear side wall portion 43A with projections, and attached to the housing side constituent member.

In the sound insulation unit 10C shown in FIG. 12, the contact portion of the holding member 40C with the holding member screw 71 is limited only to the back side wall portion 43A with protrusions. For this reason, in the sound insulating unit 10C, the holding member screws 71 and the separation distance between the back-side bar-shaped member 20 and the front-side bar-shaped member 30 can be ensured larger than those in the sound insulating unit 10 shown in FIG. As a result, the sound insulation unit 10C has higher sound insulation performance (sound insulation performance) than the sound insulation unit 10 shown in FIG.
However, the sound insulation unit 10 shown in FIG. 1 (a) and the like, and the sound insulation units 10A and 10B shown in FIGS. 10 and 11 use the holding member having the intermediate partition portion 47, so that the sound insulation unit shown in FIG. Compared with the unit 10 </ b> C, a large contact portion of the holding member with respect to the back-side bar-like member 20 can be secured, which is advantageous in terms of shape stability of the holding member.

As shown in FIG. 13, the sound insulation unit has two holding projections (back-side holding projection 47m and front-side holding projection) separated from each other in the holding member height direction instead of the holding projections 47k of the holding member 40C shown in FIG. It is also possible to employ a holding member 40D having 47n).
The configuration of the holding member 40D shown in FIG. 13 other than the back side holding projection 47m and the front side holding projection 47n is the same as that of the holding member 40C shown in FIG. The sound insulation unit 10D shown in FIG. 13 does not have the holding projection 47k of the holding member 40C of the sound insulation unit 10C shown in FIG. 12, and only has the back side holding projection 47m and the front side holding projection 47n. Different from the unit for use 10C.

The back-side holding projection 47m and the front-side holding projection 47n of the holding member 40D shown in FIG. 13 are respectively provided on the mutually facing inner surface sides of the side wall portions 45 on both sides in the width direction of the holding member 40D.
The back side holding projection 47m and the front side holding projection 47n are formed integrally with the side wall portions 45 on both sides in the width direction of the holding member 40D.

  The holding member 40D shown in FIG. 13 holds the back-side bar-shaped member 20 in the inner back-side bar-shaped member insertion hole 48B surrounded by the back-side holding protrusions 47m on both sides in the width direction, the back side wall 43, and the side walls 45 on both sides. it can. Further, the holding member 40D shown in FIG. 13 has a front side bar-like member 30 in the inner side side bar-like member insertion hole 49B surrounded by the front side holding projections 47n on both sides in the width direction, the front side wall part 44, and the side wall parts 45 on both sides. Can be held.

  The rear side holding projection 47m and the front side holding projection 47n of the holding member 40D shown in FIG. 13 do not exist on the extension of the front side wall portion screw hole 44b. The back side holding projections 47m and the front side holding projections 47n on both sides in the width direction of the holding member 40D are provided to be separated from each other on both sides in the holding member width direction through virtual extensions of the front side wall portion screw holes 44b.

  In the holding member 40D of the sound insulation unit 10D shown in FIG. 13, the back-side holding projection 47m that contacts the back-side bar-like member 20 and the front-side holding projection 47n that touches the front-side bar-like member 30 are separated from each other in the holding member height direction. It is configured to do. For this reason, the sound insulation unit 10D shown in FIG. 13 has a sound energy (vibration energy) via the holding member 40D between the back side bar-like member 20 and the front side bar-like member 30 as compared with the sound insulation unit 10C shown in FIG. Can be reduced. Therefore, the sound insulation unit 10D shown in FIG. 13 can obtain higher sound insulation performance (sound insulation performance) than the sound insulation unit 10C shown in FIG.

As shown in FIG. 14, a configuration in which the reinforcing member 41 is accommodated in the partition portion inner space 47 e of the intermediate partition portion 47 of the holding member 40 illustrated in FIG. Hereinafter, the holding member 40E illustrated in FIG. 14 is also referred to as a holding member with a reinforcing member.
14 and 15 illustrate a sound insulating unit 10E that employs a holding member 40E with a reinforcing member.

Hereinafter, the holding member 40 of the holding member 40E with the reinforcing member shown in FIG. 14 is also referred to as a holding member main body.
The reinforcing member 41 of the holding member 40E with the reinforcing member shown in FIG. 14 is a member formed of a forming material having higher bending strength than the holding member main body 40.
The reinforcing member 41 accommodated in the partition inner space 47e of the intermediate partition 47 of the holding member 40 is in contact with the entire inner surface of the partition inner space 47e.
The reinforcing member 41 increases the bending strength of the intermediate partition portion 47 of the holding member main body 40.

  The sound insulation unit 10E that employs the holding member 40E with the reinforcing member is a structural housing of the attachment 60 that has a larger load than the sound insulation unit 10 that uses the holding member 40 that does not incorporate the reinforcing member 41 (see FIG. 5). This is advantageous for supporting 51. The sound insulation unit 10E employing the holding member with reinforcement member 40E supports the attachment 60 having a larger load than the sound insulation unit 10 using the holding member 40 not incorporating the reinforcement member 41 (see FIG. 5). Available to:

  15 illustrates the wall 54E having a configuration in which the sound insulating unit 10E is used instead of the sound insulating unit 10 with respect to the wall 54 illustrated in FIG. However, the use of the sound insulating unit 10E is not limited to walls. The sound insulation unit 10E can be used in a place where the sound insulation unit 10 can be used, such as a floor.

The reinforcing member 41 of the holding member with reinforcing member 40E shown in FIG. 14 is formed in a plate shape.
The reinforcing member 41 is accommodated over the entire partition portion inner space 47 e of the intermediate partition portion 47 of the holding member 40. One of both surfaces (surfaces on both sides in the thickness direction) of the reinforcing member 41 is in contact with the back side intermediate connection wall 47a, and the other is in contact with the front side intermediate connection wall 47b. More specifically, one of both surfaces (surfaces on both sides in the thickness direction) of the reinforcing member 41 is in contact with the entire surface of the back side intermediate connection wall 47a on the side of the partition portion inner space 47e, and the other is entirely on the front side intermediate connection wall. 47b is in contact with the surface of the partition portion inner space 47e side.
The reinforcing member 41 also functions as a spacer that prevents the distance between the pair of intermediate connecting walls 47 a and 47 b from narrowing from the state in which the intermediate connecting walls 47 a and 47 b are in contact with the reinforcing member 41.

As the reinforcing member 41 of the intermediate partition portion 47, a member having excellent heat insulation and capable of screwing the holding member screw 71 is employed. In the holding member with reinforcing member 40E shown in FIGS. 14 and 15, a reinforcing member 41 made of a foamed resin body is used.
As the reinforcing member 41, a foamed resin body that can be elastically deformed and has a high shape restoration rate after deformation can be suitably used. As a forming material of the reinforcing member 41 made of a foamed resin body, for example, foamed polystyrene, foamed polyurethane, or the like can be suitably used. The reinforcing member 41 of the holding member 40 shown in FIGS. 14 and 15 is more specifically a member made of expanded polystyrene.

As shown in FIG. 15, the reinforcing member 41 made of foamed resin body accommodates the holding member screw head 71 a by breaking the portion in contact with the holding member screw head 71 a by the screwing operation of the holding member screw 71. A material capable of forming the recess 42 is employed.
The holding member screw 71 is a reinforcing member through the shaft portion 71b through which the front side rod-like member screw hole 31 and the front side wall portion screw hole 44b are passed through the front side connecting wall screw hole 47d of the front side intermediate connecting wall 47b of the holding member 40. Screw into 41. The holding member screw 71 forms a recess 42 by breaking the portion of the reinforcing member 41 that contacts the holding member screw head 71a by screwing the screw shaft portion 71b into the reinforcing member 41. To do.

  The holding member screw 71 is screwed into the reinforcing member 41 in the direction of the back side of the holding member 40 (in the direction of the structural member 51 that fixes the holding member 40), so that the head portion 71a is placed on the back side of the holding member 40. It abuts on the intermediate connecting wall 47a. The holding member screw 71 can bring the screw head 71a into contact with the back side intermediate connecting wall 47a of the holding member 40 by screwing the shaft portion 71b into the reinforcing member 41. When the screw head 71 a comes into contact with the back side intermediate connection wall 47 a of the holding member 40 by screwing into the reinforcing member 41, further screwing into the holding member 40 is restricted. The holding member screw head 71a is accommodated in a recess 42 formed in the reinforcing member 41 by screwing the holding member screw shaft 71b into the reinforcing member 41.

  The screw shaft portion 71b of the holding member screw 71 is screwed into the reinforcing member 41 until the holding member screw head portion 71a comes into contact with the back side intermediate connecting wall 47a of the holding member 40. It penetrates the rod-shaped member 20 and the back side wall portion 43A with projections and is screwed into the structural housing 51 constituting member. The screw shaft portion 71b of the holding member screw 71 is screwed into the structural member 51 constituting member when the screw head portion 71a comes into contact with the back side intermediate connection wall 47a of the holding member 40. The holding member screw 71 is inserted between the structural member 51 constituting the screwed screw shaft portion 71 b and the head portion 71 a inside the back side intermediate connection wall 47 a and the holding member outer cylinder portion 46 in the back side rod-shaped member 20. And the rear side wall portion 43A with protrusions are sandwiched and fixed (tightened).

  As described above, the reinforcing member 41 has the concave portion 42 (FIGS. 5 and 5) in which the portion contacting the holding member screw head 71a is broken by the screwing operation of the holding member screw 71 and the holding member screw head 71a is accommodated. 7)). The holding member screw 71 forms a recess 42 by breaking the portion of the reinforcing member 41 that contacts the holding member screw head 71a by screwing the screw shaft portion 71b into the reinforcing member 41. To do.

The sound insulation unit 10E shown in FIGS. 14 and 15 has an intermediate partition portion 47 of the holding member body 40 by selecting a bending strength of the reinforcing member 41 accommodated in the partition portion inner space 47e of the intermediate partition portion 47 of the holding member body 40. The bending strength can be adjusted.
Moreover, using the holding member 40 having the reinforcing member 41 made of a foamed resin body excellent in heat insulating property in the intermediate partition portion 47 effectively contributes to improving the heat insulating property between the structural housing 51 and the attachment 60.

Although the present invention has been described based on the best mode, the present invention is not limited to the above-described best mode, and various modifications can be made without departing from the gist of the present invention.
The reinforcing member 41 of the holding member 40E shown in FIG. 14 and the like is not limited to the foamed resin body, and may be a member made of a wood material such as wood. As the forming material of the reinforcing member made of the wood material, the same forming material that can be used for the bar member on the back side and the front side can be adopted.
The holding member screw 71 for fixing the sound insulating unit 10E employing the holding member 40E having the reinforcing member 41 made of a wood material to the housing side component member has its shaft portion 71b penetrated through the reinforcing member 41, and the front side wall portion screw The head 71a inserted into the hole 44b is brought into contact with the reinforcing member 41 from the front side of the holding member. The holding member screw 71 includes a reinforcing member 41, a back side intermediate connecting wall 47a, and a back side between the housing side component member into which the shaft portion 71b is screwed and the head portion 71a in contact with the reinforcing member 41. The rod-shaped member 20 and the back side wall portion 43 </ b> A with protrusions are fastened and fixed, and the holding member 40 is attached (fixed) together with the back-side rod-shaped member 20 to the housing-side component member.

  The frame-side structural member to which the sound insulating unit is attached may be a building structural member provided on the building external surface side of the structural frame of the building or supported by the structural frame. In this case, the attachment to be attached to the sound insulation unit and supported on the structural member via the sound insulation unit may be an exterior material such as an exterior panel of a building.

10, 10A, 10B, 10C, 10D, 10E ... sound insulation unit, 20 ... back side bar-like member, 30 ... front side bar-like member, 31 ... (front side bar-like member) screw holes, 40, 40A, 40B, 40C, 40D, 40E DESCRIPTION OF SYMBOLS ... Holding member, 41 ... Reinforcement member, 42 ... Recessed part, 43 ... Back side wall part, 43A, 43B, 43C ... Back side wall part with protrusion, 43a ... Back side protrusion, 44 ... Front side wall part, 44A ... Front side wall part with protrusion, 44a ... Front side protrusion, 44b ... Hole (front side wall portion screw hole), 45 ... Side wall portion, 46 ... Holding member outer cylinder portion, 47 ... Intermediate partition portion, 47a ... Intermediate connecting wall (back side intermediate connecting wall), 47b ... Intermediate Connecting wall (front side intermediate connecting wall), 47c ... projecting wall portion, 47d ... front side connecting wall screw hole, 47e ... partition inner space, 47f ... screw shaft insertion hole, 47g ... intermediate partition screw hole, 47h ... screw shaft Part insertion hole, 47i ... Expansion 47j ... Step, 47k ... Holding projection, 47m ... Back side holding projection, 47n ... Front side holding projection, 47o ... Groove (divider inner groove), 47p ... Groove (side center groove), 48, 48A, 48B ... Back side bar-shaped member insertion hole, 49, 49A, 49B ... front side bar-shaped member insertion hole,
50 ... Building, 51 ... Structural housing, 52 ... Wood wall base (structural housing), 52a ... (Building structural member, structural body side structural member), 52b ... Space pillar (building structural member, structural body side structural member), 52c ... Wall foundation vertical members (building components, frame side components), 53 ... wood floor foundations (structure frames), 53a ... (building components, frame side components), 53b ... rough plates (building components) 54, 54E ... wall, 55 ... floor, 55A ... floor body, 60 ... attachment, 61 ... interior plate (attachment, building component attachment), 62 ... floor body support plate (attachment) Object, building component attachment), 63 ... flooring, 71 ... screw (screw for holding member), 71a ... head, 71b ... shaft, 71c ... cutting blade, 72 ... screw for attachment, 72a ... head 72b ... shaft part, 81 ... fiber sound absorbing material.

Claims (9)

A sound insulation unit disposed between a building component and an attachment attached to the building component,
A back-side bar-like member supported by the building component, a front-side bar-like member to which the attachment is attached, and a holding member that is made of an elastic material and holds the back-side and front-side bar-like members with a certain gap therebetween. And
The holding member is a rectangular cylindrical holding member composed of a back side wall portion disposed on the building component side, a front side wall portion provided in parallel with the back side wall portion, and a pair of side wall portions. An outer cylinder portion is provided, and at one or a plurality of locations of the pair of side wall portions, the back-side and front-side rod-like members inserted inside the holding member outer cylinder portion are connected to the back-side wall portion and the front-side wall. Holding protrusions are provided to be held apart from each other in the interval direction of the parts,
Projections are provided at a plurality of locations on the outer surface side of the back side wall portion. The holding projection is a part of an intermediate partition that is provided between the back side wall and the front side wall and connects the pair of side walls.
The holding member includes a back side bar-like member insertion hole through which the back side bar-like member is inserted between the back side wall part and the intermediate partition part, the front side wall part, and the middle inside the holding member outer cylinder part A front side bar-shaped member insertion hole through which the front side bar-shaped member is inserted is formed between the partition portion, and configured.
A screw insertion hole for passing a screw for fixing the intermediate partition portion to the building component is formed in the center portion in the surface direction of the front side wall portion,
2. The sound insulating unit according to claim 1, wherein the back-side bar-shaped member inserted through the back-side bar-shaped member insertion hole comes into contact with a center portion in the surface direction of the intermediate partition portion and the back side wall portion. The intermediate partition portion has a pair of intermediate connection walls that connect the pair of side wall portions,
The pair of intermediate connecting walls are provided in parallel to the back side wall portion and the front side wall portion so as to be separated from each other in the interval direction of the back side wall portion and the front side wall portion,
At the position corresponding to the screw insertion hole at the center in the surface direction of the front side intermediate connection wall that is the intermediate connection wall facing the front side insertion space, the back side intermediate connection wall that is the intermediate connection wall facing the back side insertion space. The sound insulation unit according to claim 2, wherein a front side connection wall screw hole is formed to allow a screw to pass through and fix the back side intermediate connection wall to the back side bar-like member.   The sound insulation unit according to claim 3, wherein the intermediate partition portion further includes a reinforcing member provided between the pair of intermediate connection walls and abutted against each of the pair of intermediate connection walls. .   The intermediate partition portion is a solid wall portion integrally formed with the holding member outer cylinder portion by rubber, and the screw is located at a position corresponding to the screw insertion hole at the center in the surface direction of the intermediate partition portion. The sound insulation unit according to claim 2, wherein an intermediate partitioning screw hole is formed to pass therethrough.   The sound insulation unit according to any one of claims 1 to 5, wherein protrusions are provided at a plurality of locations on the outer surface side of the front side wall portion.   The sound insulation unit according to any one of claims 1 to 6, wherein the back-side and front-side bar-shaped members are each made of a wood material that can be cut using a hand tool.   The front side bar-like member is formed with a screw hole penetrating through the screw through the screw in the front side wall portion in a state of being inserted into the front side bar-like member insertion hole of the holding member. The sound insulation unit according to claim 1, wherein the sound insulation unit is a sound insulation unit.   The holding member is shorter than the back-side and front-side rod-like members, and a plurality of the holding members are provided at intervals in the longitudinal direction with respect to the back-side and front-side rod-like members. The sound insulating unit according to any one of 1 to 8.

Images