JP6958996B2 - Sound insulation unit - Google Patents

Description

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

Conventionally, when the inner wall material is constructed using the studs of a building, a block-shaped member (hereinafter referred to as a block) formed of synthetic rubber or the like between the studs and the inner wall material in order to enhance the soundproofing effect. (Also called a soundproofing material) is intervened. In order to fix the inner wall material to the studs, etc., a wood screw is screwed in from the surface side of the inner wall material, the inner wall material and the block-shaped soundproofing material are penetrated, and the interior wall material is reached to the studs, etc. , Also called) is widely adopted. However, in this construction method, the holes through which the wood screws pass are connected between the inner wall material and the studs, and the sounds inside and outside the room are transmitted through the wood screws and leak.

Such a phenomenon also occurs when constructing the floor of a building.
In the case of constructing the floor of a building, for example, a base material is placed on a joist provided on the base via a block-shaped soundproof material, and the base material and the block-shaped soundproof material are penetrated from above the base material to form a joist. After fixing the base material and the block-shaped soundproof material to the joists with the screwed wood screws, it is widely practiced to lay a floor material such as a decorative material on the base material. In the floor construction of the second floor or higher of a building, for example, a base material is placed 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 soundproofing material to the joists with the wood screws screwed into the joists, a flooring material such as a decorative material is laid on the base material.
On the floor, holes through which wood screws pass are connected between the base material and the joists, and the sounds inside and outside the room are transmitted through the wood screws and leak.

In view of the fact that the sound inside and outside the room leaks through the wood screws in the first conventional technique described above, there is a proposal described in Patent Document 1, for example, as a technique for improving the soundproofing performance of a building.
Patent Document 1 describes a shielding structure in which a front frame member joined to an inner wall material or the like and a back frame member joined to a structural frame of a building are held by a shielding member made of an elastic material with a certain gap. The material is disclosed. The shielding member has a tubular holding portion formed with 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 front side frame members and back side frame members. It is held on both sides of the tubular holding part by the locking hook part of the.

The shielding structural material described in Patent Document 1 is provided between the structural skeleton of a building and the inner wall material or the like, and the inner wall material or the like is attached to the structural skeleton. The inner wall material and the like are fixed to the front frame member. The inner wall material or the like fixed to the front frame member is supported by the structural frame via the tubular holding portion of the shielding member and the back frame member. The tubular holding portion of the shielding member attenuates or shields the propagation of sound energy propagating between the inner wall material or the like and the structural frame. As a result, the shielding structural material described in Patent Document 1 can secure high soundproofing performance as compared with the first conventional technique.

Japanese Patent No. 4143022

As described above, the shielding member of the shielding structural material described in Patent Document 1 uses a pair of locking hooks having an L-shaped cross section provided on both sides of the tubular holding portion to form a front frame member and a back frame member. It is configured to hold. Further, in the shielding structural material described in Patent Document 1, a flat plate is bent to form a concave cross section, and a central portion having a concave cross section is bent so that a convex portion protruding outward from both shoulders. Adopts a front side frame member and a back side frame member formed as a joint surface with a structural frame, an inner wall material, and the like. The shielding structural material described in Patent Document 1 has a configuration in which both shoulders of the front frame member are held by a pair of locking hooks, and both shoulders of the back frame member are held by a pair of locking hooks. ..

As the shielding member, it is preferable to use an integrally molded product made of synthetic rubber from the viewpoint of cost reduction.
However, in the shielding structural material using the sound insulating member made of synthetic rubber, the frame members on the front side and the back side held by the pair of locking hooks of the sound insulating member are elastically deformed by the locking hooks in the construction of the structural frame. It may fall off from the sound insulation member, which may take time and effort for construction.

An object 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 a back bar-shaped member supported by the building component. It has a front-side rod-shaped member to which the attachment is attached, and a holding member made of an elastic material that holds the back-side and front-side rod-shaped members with a certain gap, and the holding member is on the building component side. It has a rectangular tubular holding member outer cylinder portion composed of a back side wall portion to be arranged, a front side wall portion provided in parallel with the back side wall portion, and a pair of side wall portions, and the pair of side wall portions. In order to hold the rod-shaped members on the back side and the front side inserted inside the outer cylinder portion of the holding member at each one or a plurality of positions of the holding member so as to be separated from each other in the spacing direction of the back side wall portion and the front side wall portion. This is a sound insulation unit characterized in that a holding protrusion is provided, and protrusions are provided at a plurality of locations on the outer surface side of the back side wall portion.
The second aspect is the sound insulation unit of the first aspect, characterized in that protrusions are provided at a plurality of positions on the outer surface side of the front side wall portion.
A third aspect is the sound insulation unit of the first or second aspect, wherein the rod-shaped members on the back side and the front side are each made of a wood-based material that can be cut by using a hand tool.
The fourth aspect is that the holding member has a shorter size than the rod-shaped members on the back side and the front side, and a plurality of the rod-shaped members on the back side and the front side are provided at intervals in the longitudinal direction thereof. It is a sound insulation unit according to any one of the first to third aspects.

According to the sound insulation unit according to some embodiments of the present invention, the holding member holds the back side rod-shaped member between the back side wall portion connecting the pair of side wall portions and the back side holding protrusion, and is a pair. The front side rod-shaped member is held between the front side wall portion connecting the side wall portions and the front side holding protrusion. Therefore, the sound insulation unit can prevent the rod-shaped members on the back side and the front side inserted inside the outer cylinder of the holding member from falling off from the holding member during construction on the structural frame of the building, and the construction is easy. Become.
Further, the holding member can reduce the contact portion with the structural skeleton by bringing the protrusion on the outer surface side of the back side wall portion into contact with the structural skeleton. As a result, the sound insulation unit can easily secure an excellent sound insulation effect.

It is a figure which shows the sound insulation unit which concerns on one Embodiment of this invention, (a) is the right sectional view, (b) is the figure which shows the structure seen from the back side. It is an exploded perspective view which shows an example of the wall of a building using the sound insulation unit of FIG. It is a side sectional view which shows the wall of FIG. It is an exploded perspective view which shows the structure of the sound insulation unit of FIG. FIG. 3 is an enlarged cross-sectional view (enlarged plan cross-sectional view) showing the vicinity of the sound insulation unit on the wall of FIG. It is an exploded perspective view which shows an example of the floor of a building using the sound insulation unit of FIG. FIG. 6 is an enlarged cross-sectional view showing the vicinity of the sound insulation unit on the floor of FIG. It is a figure which shows the example of the back side protrusion of another aspect of the sound insulation unit of FIG. (A) is a front sectional view, and (b) is a view showing a configuration seen from the back side. It is a back side projection of another aspect of the sound insulation unit of FIG. 1, and is a view showing a tapered protrusion (conical protrusion in the illustrated example) whose cross-sectional dimension decreases as the distance from the back side wall increases. , (A) is a front sectional view, and (b) is a view showing a configuration seen from the back side. It is a figure explaining another aspect of the sound insulation unit which concerns on this invention, and the screw shaft part insertion hole for passing the shaft part of the holding member screw is formed through through the solid intermediate partition part (intermediate partition wall). It is a front sectional view which shows the sound insulation unit which has the holding member of the structure. It is a figure explaining another aspect of the sound insulation unit which concerns on this invention, and has the expansion hole part at the front end part of the holding member of the screw shaft part insertion hole in the intermediate partition part (intermediate partition wall) of the holding member of FIG. It is a regular cross-sectional view which shows the sound insulation unit which has the holding member through which the screw hole of an intermediate partition part is formed through. It is a figure explaining another aspect of the sound insulation unit which concerns on this invention, and has sound insulation which has the structure which the holding protrusions protruding from both side wall part of a holding member are provided apart from each other in the width direction of a holding member. It is a front sectional view which shows the unit for use. It is a figure explaining the sound insulation unit of another aspect which concerns on this invention, and the back side holding protrusion part and the front side holding protrusion part protruding from both side wall part of a holding member are provided apart from each other in the holding member width direction. It is a front sectional view which shows the sound insulation unit which has the holding member of a structure. It is a figure explaining the sound insulation unit of another aspect which concerns on this invention, and is the front sectional view which shows the sound insulation unit which has the holding member of the structure which accommodated the reinforcing member in the partition part inner space of the intermediate partition part of the holding member. be. FIG. 5 is an enlarged plan sectional view showing the vicinity of the sound insulation unit of the wall having the structure in which the sound insulation unit of FIG. 14 is used instead of the sound insulation unit of FIG. 1 (a) for the wall 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, the sound insulation unit 10 according to the first embodiment of the present invention includes a back side rod-shaped member 20, a front side rod-shaped member 30, a back side rod-shaped member 20, and a front side rod-shaped member 20. It has a holding member 40 that holds the member 30 with a certain gap.

As shown in FIGS. 2 and 6, the sound insulation unit 10 is provided on the structural skeleton 51 by attaching the holding member 40 and the back side rod-shaped member 20 to the structural skeleton 51 of the building 50 (in the illustrated example, a wooden house).
The building 50 shown in FIGS. 2 and 3 (reference numeral 50A is added in FIGS. 2 and 3) is interiorized in the wooden wall base 52 via the sound insulation unit 10 attached to the wooden wall base 52 which is the structural frame 51. It has a wall 54 having a structure that supports the plate 61. The wall 54 has a wooden wall base 52, a sound insulation unit 10, and an interior plate 61.

The building 50 shown in FIGS. 6 and 7 (reference numeral 50B is added in FIGS. 6 and 7) is on the sound insulation unit 10 via the sound insulation unit 10 mounted on the wooden floor base 53 which is the structural frame 51. The floor 55 having a structure in which the floor body 55A provided in the above is supported on the wooden floor base 53 is shown. The floor 55 has 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 body 55A including a floor body base plate 62 supported on the sound insulation unit 10 and a floor material 63 laminated on the floor body base plate 62. The floor body base plate 62 is fixed to the sound insulation unit 10.
Even if the floor body 55A has a vibration damping sound insulating sheet or the like having a structure in which a metal filler is dispersed and mixed in a base material such as asphalt or rubber between the floor body base plate 62 and the floor material 63 of the uppermost layer. good.

In FIGS. 2 and 3, the sound insulation unit 10 is attached to vertical members 52c (building constituent members, hereinafter also referred to as wall base vertical members) such as columns 52a and studs 52b constituting the wooden wall base 52 of the structural frame 51. The holding member 40 and the back side rod-shaped member 20 are fixed (attached) and attached to the structural skeleton 51. The wall base vertical member 52c extends in the vertical direction.
In FIG. 2, the wooden wall base 52 includes a furring strip 52d that connects the pillars 52a and the studs 52b in the horizontal direction.

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

The wooden wall base 52 of FIGS. 2 and 3 and the wooden floor base 53 of FIGS. 6 and 7 are each composed of members made of wood-based materials such as wood (building constituent members).
The wall base vertical member 52c, the joist 53a, and the rough plate 53b are all building constituent members formed of wood-based materials such as wood and plywood.

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

The sound insulation unit 10 is arranged between the structural skeleton 51 of the building 50 and the attachment 60 to be attached to the structural skeleton 51, and supports the attachment 60.
In FIGS. 2 and 3, the attachment 60 supported by the sound insulation unit 10 is an interior plate 61 (building constituent member, an example of an interior material) constituting an interior portion of a living space S such as a living room in the building 50. .. The living space S includes not only a living room but also a corridor, stairs, and the like.

With respect to the wall 54 of FIGS. 2 and 3, the living space S side in the building 50 is also referred to as the front side. Further, regarding the sound insulation unit 10 and the interior plate 61 of the wall 54, the living space S side is 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 plate 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 plates 61 are arranged in parallel with a virtual surface (hereinafter, also referred to as a wall base front surface) on which the front surfaces of the plurality of wall base vertical members 52c of the wooden wall base 52 are arranged. It constitutes a wall-like body parallel to the front surface of the wall base. The front surface of the wall base 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 a wall-like body composed of a plurality of interior plates 61.

The interior portion of the wall 54 is, for example, a wall-shaped body in which a plurality of interior plates 61 acting as decorative materials are continuously provided, but in addition to this, the interior portion of the wall 54 is on the front side of the wall-shaped body composed of the plurality of interior plates 61. It also includes those with decorative materials such as wallpaper.

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

Regarding the floor 55 of FIGS. 6 and 7, the living space S side (upper side in FIGS. 6 and 7) is also referred to as a front side, and the side opposite to the living space S is also referred to as a 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 rough plates 53b are arranged in parallel with a virtual surface (hereinafter, also referred to as a joist front surface) in which the front surfaces of the plurality of joists 53a of the wooden floor base 53 are arranged, and the joist fronts are arranged. It forms a wall-like body that extends parallel to the surface and covers the joist 53a.
The front side (upper side) surface of the wall-shaped body composed of the plurality of rough plates 53b is also hereinafter referred to as a floor base front surface. The front surface of the floor base extends parallel to the front surface of the joists.

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 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 floor base plates 62 are arranged parallel to the floor base front surface and the joist front surface to form 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 was supported on a wooden floor base 53 which is a rough floor, a plurality of sound insulation units 10 provided in parallel to each other on a rough plate 53b forming an upper surface of the wooden floor base 53, and these sound insulation units 10. It has a floor body base plate 62 and a floor body 55A including a floor material 63 laminated on the floor body base plate 62.
The sound insulation unit 10 is located on the back side (lower side) of the floor body 55A, more specifically, on the back side (lower side) of the wall-shaped body formed by the plurality of floor body base plates 62 in the lowermost layer of the floor body 55A.

The front surface of the wall base and the front surface of the floor base are the surfaces (hereinafter, structural skeleton) on the side of the building internal space (living space S, corridor, etc.) of the part where the sound insulation unit 10 is attached in the structural skeleton 51. This is an example of a front surface).

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

The material of the wall base vertical member 52c constituting the wooden wall base 52 shown in FIGS. 2 and 3, the joists 53a and the rough plate 53b constituting the wooden floor base 53 shown in FIGS. 6 and 7, is the back side rod-shaped member 20. It is a wood-based material that can be used for the front rod-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 whose entire body is made 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 the material for forming the holding member 40, various synthetic resin materials other than rubber that can be elastically deformed can also be used.

The holding member 40 has a substantially rectangular tubular shape in cross section in which a pair of side wall portions 45 are connected by a back side wall portion 43 arranged on the structural frame 51 side and a front side wall portion 44 provided in parallel with the back side wall portion 43. It has a holding member outer cylinder portion 46.
Further, the holding member 40 also has an intermediate partition portion 47 provided between the back side wall portion 43 and the front side wall portion 44 to connect the pair of side wall portions 45.

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

The intermediate partition portion 47 of the holding member 40 shown in FIGS. 1 (a), 4 and the like includes a protruding wall portion 47c projecting from a pair of side wall portions 45 of the holding member 40 toward the inner surface facing each other. Specifically, the pair of intermediate connecting walls 47a and 47b of the intermediate partition portion 47 connect between the protruding wall portions 47c protruding from the pair of side wall portions 45 of the holding member 40. The pair of intermediate connecting 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 47 of the holding member 40 shown in FIGS. 1 (a), 4 and the like is a pair of protruding wall portions 47c protruding from the pair of side wall portions 45 of the holding member 40 and a pair connecting the protruding wall portions 47c. It is composed of intermediate connecting walls 47a and 47b.

The intermediate partition portion 47 has an inner region 47c (space, hereinafter also referred to as a partition portion inner space) surrounded by a pair of intermediate connecting 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. 1 (a), 4 and the like has a pair of intermediate connecting walls 47a and 47b and a pair of protruding wall portions 47c, and the pair of intermediate connecting walls 47a and 47b. The structure is such that the space inside the partition portion 47e is secured between them.

As shown in FIGS. 1A and 4, the back side rod-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). It is inserted into the back side rod-shaped member insertion hole 48 secured in. Specifically, the back side rod-shaped 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 connecting wall 47a, and the protruding wall portions 47c on both sides of the back side intermediate connecting wall 47a. Space).
The front rod-shaped member 30 is inserted into the front rod-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). NS. Specifically, the front side rod-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 connecting wall 47b, and the protruding wall portions 47c on both sides of the front side intermediate connecting wall 47b. Space).

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

The back-side rod-shaped member insertion hole 48 is formed extending to the holding member 40 with a cross-sectional dimension that matches the cross-section perpendicular to the longitudinal direction of the back-side rod-shaped member 20. The holding member 40 holds the back side rod-shaped member 20 inserted into the back side rod-shaped member insertion hole 48 in a direction in which the longitudinal direction of the back side rod-shaped member 20 coincides with the direction of the center axis of the back side rod-shaped member insertion hole 48.
The back-side rod-shaped 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-shaped back-side rod-shaped member 20. It is formed. The holding member 40 accommodates the long plate-shaped back side rod-shaped member 20 in the back side rod-shaped member insertion hole 48 in a direction in which both sides thereof are parallel to the back side wall portion 43.

The front-side rod-shaped member insertion hole 49 is formed so as to extend to the holding member 40 with a cross-sectional dimension that matches the cross-section perpendicular to the longitudinal direction of the front-side rod-shaped member 30. The holding member 40 holds the front-side rod-shaped member 30 inserted into the front-side rod-shaped member insertion hole 49 in a direction in which the longitudinal direction of the front-side rod-shaped member 30 coincides with the central axis direction of the front-side rod-shaped member insertion hole 49.
The front rod-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 matches the cross section of the long plate-shaped front rod-shaped member 30 perpendicular to the longitudinal direction. It is formed. The holding member 40 accommodates the long plate-shaped front rod-shaped member 30 in the front-side rod-shaped member insertion hole 49 in a direction in which both sides thereof are parallel to the front side wall portion 44.

As shown in FIGS. 1A, 1B, 5 and 7, the holding members 40 are provided at a plurality of locations on the outer surface side of the back side wall portion 43 (the side opposite to the back side rod-shaped member insertion hole 48). The protrusion 43a (hereinafter, also referred to as a back side protrusion) is included. Further, 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 (the side opposite to the front side rod-shaped member insertion hole 49) of the front side wall portion 44.

The back side projection 43a of the holding member 40 shown in FIGS. 1A, 1B, 5 and 7 is integrally formed with the back side wall portion 43. The front side protrusion 44a is formed integrally with the back side wall portion 43 of the holding member 40.
The holding member 40 has a back side wall portion 43A with protrusions composed of a back side wall portion 43 and a back side protrusion 43a, and a front side wall portion 44A with protrusions composed of a front side wall portion 44 and a front side protrusion 44a.

Regarding the holding member 40 shown in FIGS. 1 (a), 1 (b), 5 and 7, the direction corresponding to the center axis of the back side rod-shaped member insertion hole 48 and the center axis of the front side rod-shaped member insertion hole 49 is the extending direction. The direction in which the back side wall portion 43 and the front side wall portion 44 are spaced apart from each other is also referred to as a height direction. Further, with respect to 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 hereinafter also referred to as a width direction. The width direction of the holding member 40 shown in FIGS. 1 (a), 1 (b), 5 and 7, is the spacing 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 projections 43a are provided at a plurality of positions in the back side wall portion 43 in the width direction of the holding member 40, and the front side protrusions 44a are provided at a plurality of locations in the holding member 40 width direction of the front side wall portion 44.

Specifically, the back side projection 43a shown in FIGS. 1 (a), 1 (b), and 5 has a triangular cross-sectional shape whose dimensions in the width direction of the holding member 40 are reduced as they are separated from the back side wall portion 43 toward the outer surface side thereof. The holding member 40 is formed in a ridge shape extending in the extending direction.
As shown in FIG. 4, specifically, the front side projection 44a has a triangular cross section in which the dimension in the width direction of the holding member 40 is reduced as the front side wall portion 44 is separated from the front side wall portion 44 toward the outer surface side thereof, and the holding member 40 extends in the extending direction. It is formed in the shape of a ridge extending to.

The holding members 40 shown in FIGS. 1 (a), 1 (b), 4 and 5, etc. are provided at both ends of the back side wall portion 43 and the front side wall portion 44 in the width direction along the extending direction of the holding member 40. It also has ridge-shaped end protrusions 43e and 44e that extend. At the tip of the end protrusions 43e and 44e, a flat surface (protrusion surface) extending perpendicularly to the height direction of the holding member 40 is formed.
The protruding ends of the back side protrusions 43a and the end protrusions 43e protruding from the back side wall 43 are located on the same virtual plane perpendicular to the height direction of the holding member 40.
The protruding ends of the front side protrusions 44a and the end protrusions 44e protruding from the front side wall portion 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 and the end protrusion 43e, and the front side protrusion 44a and the end protrusion 44e are not limited to the directions along the extension direction of the holding member 40, respectively, and are, for example, the height direction and the extension of the holding member 40. It may be in the direction perpendicular to the current direction.
Further, the holding member is not limited to the configuration having the end protrusions 43e and 44e, and a configuration having no end protrusions 43e and 44e can also be adopted.
The above-mentioned 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 each embodiment of the holding member.

As shown in FIGS. 1A and 4, a screw 71 for fixing the holding member 40 to the structural skeleton 51 (see FIG. 5) is located at the center of the front side wall portion 44A with protrusions of the holding member 40 in the surface direction. A screw insertion hole 44b (hereinafter, also referred to as a front side wall screw hole) through which a holding member screw (hereinafter, also referred to as a holding member screw) is passed is formed. The front side wall portion screw hole 44b is formed so as to penetrate the thickness of the front side wall portion 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 body including the head portion 71a of the holding member screw 71 (hereinafter, also referred to as a holding member screw head) can pass. Has been done.

As shown in FIG. 1A, a hole 47d for passing the holding member screw 71 in the central portion in the surface direction of the front intermediate connecting wall 47b of the holding member 40 (hereinafter, also referred to as a front connecting wall screw hole). 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 portion screw hole 44b at a position corresponding to the front side wall portion screw hole 44b via the front side rod-shaped member insertion hole 49 in the surface direction of the front side intermediate connecting wall 47b. There is.

The front side wall portion screw hole 44b and the front side connecting wall screw hole 47d of the holding member 40 are formed so as 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 portion 71a can pass.
A holding member screw 71 that has passed through the front side wall screw hole 44b from the side opposite to the intermediate partition 47 through the front side wall screw hole 44b can be inserted into the front side connecting wall screw hole 47d.

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

As shown in FIGS. 1A and 4, the front rod-shaped member 30 is formed through a screw hole 31 (hereinafter, also referred to as a front rod-shaped member screw hole) through which the holding member screw 71 can pass. .. The front rod-shaped member screw hole 31 is formed so as to penetrate the elongated plate-shaped front rod-shaped member 30 in the thickness direction thereof. The front rod-shaped member screw hole 31 is formed so as to extend to the front rod-shaped member 30 with a cross-sectional size through which the entire holding member screw 71 including the head 71a thereof can pass.
The back side rod-shaped member 20 is formed in a rod shape (long plate shape in the illustrated example) in which screw holes are not formed.

Specifically, the holding member screw 71 shown in FIG. 1A or the like is 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 of the shaft portion 71b in the axial direction. And have. The tip of the screw shaft portion 71b, which is on the head 71a side and opposite to the base end side, is formed in a tapered shape. On the side circumference of the screw shaft portion 71b, a cutting edge 71c that cuts into the back side rod-shaped member 20 made of wood-based material and enables screwing of the screw shaft portion 71b is spirally formed by rotating the holding member screw 71 around the axis. Has been done.

The holding member screw 71 is screwed into the back side intermediate connecting wall 47a, the back side wall portion 43A with protrusions, the back side rod-shaped member 20, and the structural skeleton 51 constituent member for fixing the holding member 40 without forming a pilot hole (specifically). Is not limited to wood screws, as long as it can exhibit a tapping function capable of screwing the shaft portion 71b) and a fastening force can be obtained by screwing. As the holding member screw 71, for example, one having a tapping screw tip C-shaped screw tip or the like can be adopted.

The holding member screw 71 shown in FIG. 5 fixes the holding member 40 and the back side rod-shaped member 20 to the wall base vertical member 52c constituting the wooden wall base 52.
The holding member screw 71 has a shaft portion 71b that can be screwed into the back side intermediate connecting wall 47a, the back side wall portion 43A with protrusions, the back side rod-shaped member 20, and the wall base vertical member 52c without forming a pilot hole (tapping function). (What is demonstrated) is adopted.

In the examples shown in FIGS. 6 and 7, the holding member screw 71 plays a role of fixing the holding member 40 and the back side rod-shaped member 20 to the joists 53a and the rough plate 53b constituting the wooden floor base 53. In the holding member screw 71 used in this example, the shaft portion 71b can be screwed into the back side intermediate connecting wall 47a, the back side wall portion 43A with protrusions, the back side rod-shaped member 20, the joists 53a, and the rough plate 53b without forming pilot holes. Adopt a good one (one that demonstrates the tapping function).

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

As shown in FIGS. 2, 3 and 6, the sound insulation unit 10 is assembled in a state in which the back side and front side rod-shaped members 20 and 30 are inserted into the rod-shaped member insertion holes 48 and 49 on the back side and front side of the holding member 40. .. The holding member 40 (the axial dimension of the rod-shaped member insertion holes 48 and 49 on the back side and the front side thereof) is shorter than the rod-shaped 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-shaped members 20 and 30 on the back side and the front side. The rod-shaped members 20 and 30 on the back side and the front side are held in parallel with each other by a plurality of holding members 40. The rod-shaped members 20 and 30 on the back side and the front side 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.

As shown in FIGS. 2, 3 and 6, the sound insulation unit 10 is provided with the structural skeleton 51 (in FIGS. 2 and 3, the wall base vertical member 52c of the wooden wall base 52, and in FIG. 6, the joists 53a of the wooden floor base 53 and To provide the rough plate 53b), a sound insulation unit 10 in an assembled state is prepared in which the back side and front side rod-shaped members 20 and 30 are inserted into the rod-shaped member insertion holes 48 and 49 on the back side and front side of the holding member 40. Then, as shown in FIGS. 5 and 7, the holding member 40 of the sound insulation unit 10 and the back side rod-shaped member 20 are used as the holding member screws 71 to form the structural skeleton 51 (in FIG. 5, the wall base vertical member 52c, In FIG. 7, it is fixed to the joist 53a and the rough plate 53b). The holding member 40 fixed to the constituent members of the structural skeleton 51 brings its back side projection 43a into contact with the structural skeleton 51.

As shown in FIGS. 1 and 5, the holding member 40 and the back side rod-shaped member 20 of the sound insulation unit 10 in the assembled state are formed in the front side wall screw holes 44b and the front side rod-shaped member screw holes 31 of the holding member 40 on the front side of the holding member 40. It can be fixed to the structural skeleton 51 by using the holding member screw 71 inserted from.
The holding member screw 71 is inserted into the front side rod-shaped member screw hole 31 communicating with the front side wall portion screw hole 44b and the front side wall portion screw hole 44b of the holding member 40 from the tip end side of the shaft portion 71b. In the holding member screw 71, the shaft portion 71b inserted from the front side rod-shaped member screw hole 31 into the partition portion inner space 47e via the front side connecting wall screw hole 47d of the holding member 40 is inserted into the back side intermediate connecting wall 47a and the back side rod-shaped member 20. , Penetrate through the back side wall portion 43A with protrusions, and screw into the structural skeleton 51 component member on the back side of the holding member 40. The holding member screw 71 includes a screw head 71a in contact with the back intermediate connecting wall 47a of the holding member 40 and a structural skeleton 51 constituent member in which the screw shaft portion 71b is screwed (in FIG. 5, the wall base vertical member 52c, FIG. In No. 7, the back side intermediate connecting wall 47a, the portion of the back side rod-shaped member 20 located in the back side rod-shaped member insertion hole 48, and the back side wall portion 43A with protrusions are sandwiched and fixed (tightened and fixed) between the joist 53a). do.

The back side intermediate connecting wall 47a, the back side rod-shaped member 20, and the back side wall portion 43A with protrusions before penetrating the holding member screw shaft portion 71b are not formed with holes for passing the holding member screw shaft portion 71b.
In the holding member screw 71, the shaft portion 71b inserted into the partition portion inner space 47e is screwed through the back side intermediate connecting wall 47a, the back side rod-shaped member 20, and the back side wall portion 43A with protrusions from the partition portion inner space 47e, and further held. It is screwed into the structural skeleton 51 component member on the back side of the member 40.

For example, the front side rod-shaped 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 side rod-shaped member screw hole 31 communicates with the front side wall portion screw hole 44b of the holding member 40. The front side rod-shaped member screw hole 31 also communicates with the front side connecting wall screw hole 47d by communicating with the front side wall portion screw hole 44b of the holding member 40.

The head 71a of the holding member screw 71 is inserted into the partition inner space 47e from the front side of the holding member 40 via the front side wall portion screw hole 44b, the front side rod-shaped member screw hole 31, and the front side connecting wall screw hole 47d. The holding member screw 71 can be screwed toward the structural skeleton 51 on the back side of the holding member 40 until the head 71a comes into contact with the intermediate connecting wall 47a on the back side of the holding member 40.

The holding member screw shaft portion 71b has a back side intermediate connecting wall 47a, a back side rod-shaped member 20, and a back side wall portion with protrusions in a state where the holding member screw head 71a is in contact with the back side intermediate connecting wall 47a of the holding member 40. A length dimension (axial dimension) that can be screwed into the structural frame 51 constituent 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 of the holding member 40 with respect to the back side intermediate connecting wall 47a until the holding member screw head 71a comes into contact with the back side intermediate connecting wall 47a of the holding member 40. It penetrates the back side intermediate connecting wall 47a, the back side rod-shaped member 20, and the back side wall portion 43A with protrusions, and is screwed into the structural skeleton 51 constituent member. The shaft portion 71b of the holding member screw 71 in which the screw head 71a is brought into contact with the back side intermediate connecting wall 47a of the holding member 40 by screwing the holding member 40 to the back side is screwed into the structural skeleton 51 component member. ing.

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

The back side rod-shaped member 20 serves as a spacer for preventing the back side intermediate connecting wall 47a of the holding member 40 and the back side wall portion 43 from approaching each other in the surface direction. Therefore, when the holding member 40 is fixed (screwed) to the structural skeleton 51 constituent member by using the holding member screw 71, the back side intermediate connection of the holding member 40 pressed against the head 71a 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 kept stable, and the holding member screw shaft portion 71b can be screwed into the structural frame 51 constituent members efficiently and accurately (the holding member screw 71 center axis is the front side wall screw). Hole 44b coincides with the central axis or has a small error).

The holding member 40 of the sound insulation unit 10 in the assembled state is attached to the structural skeleton 51 by being fixed to the structural skeleton 51 constituent member together with the back side rod-shaped member 20 by the holding member screw 71. The sound insulation unit 10 in the assembled state is provided on the structural skeleton 51 by fixing the holding member 40 to the structural skeleton 51 together with the back side rod-shaped member 20.

As the back side rod-shaped member 20 and the front side rod-shaped member 30 of the sound insulation unit 10, those having an appropriate length by cutting or the like are used before being fixed to the structural skeleton 51 of the sound insulation unit 10 in the assembled state.
The back-side rod-shaped member 20 and the front-side rod-shaped member 30 made of wood-based material that can be cut by 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 cutting a metal member using an electric tool, sparks are generated at the time of cutting, so it is necessary to secure a cutting work place free of combustible materials such as wood and perform the cutting work. On the other hand, the back side rod-shaped member 20 and the front side rod-shaped member 30 made of wood-based material of the sound insulation unit 10 do not generate sparks when cutting with a hand tool or an electric tool, and have a high degree of freedom in selecting a cutting work place. .. The back side rod-shaped member 20 and the front side rod-shaped member 30 made of wood-based material of the sound insulation unit 10 can be cut at a convenient place for construction of the sound insulation unit 10 on the structural skeleton 51, for example, by cutting in a building.
Therefore, the back side rod-shaped member 20 and the front side rod-shaped member 30 made of wood material that can be cut by using a hand tool such as a saw are attached to the structural skeleton 51 of the sound insulation unit 10 (including cutting of the back side and front side rod-shaped members). ) Is advantageous in terms of improving efficiency (shortening construction time, etc.).

Here, as shown in FIGS. 2 and 3, the relationship between the structural skeleton 51 and the attachment 60 and the sound insulation unit 10 will be described more specifically by taking the 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 uses the holding member screw 71 to align the longitudinal directions of the back side and front side rod-shaped members 20 and 30 with the longitudinal direction of the wall base vertical member 52c. It is fixed to the base vertical member 52c.
The holding member 40 is fixed to the wall base vertical member 52c by bringing the back side protrusion 43a into contact with the front end surface of the wall base vertical member 52c.
The sound insulation 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 rod-shaped members 20 and 30 coincides with the extending direction (longitudinal direction) of the wall base vertical member 52c extending in the vertical direction. Has been done.

Further, 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 to each other in the horizontal direction.
In FIG. 2, the fiber sound absorbing material 81 is formed in a mat shape by assembling a large number of fibers such as glass wool and rock wool, which are well known as fiber-based sound absorbing materials. In FIG. 2, the fiber sound absorbing material 81 is embedded between the sound insulating units 10 adjacent to each other in the horizontal direction.

As shown in FIG. 5, the holding member screw 71 for fixing the sound insulation unit 10 to the wooden wall base 52 is provided inside the holding member outer cylinder portion 46 of the back side intermediate connecting wall 47a of the holding member 40 and the back side rod-shaped member 20. The 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 back side projection 43a of the holding member 40 is 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 has a screw 72 (hereinafter, for an attachment) screwed into the front side rod-shaped member 30 through the protruding front side wall portion 44A of the holding member 40 of the sound insulation unit 10. It is fixed to the front rod-shaped member 30 by a screw (also referred to as a screw). In the mounting screw 72 shown in FIG. 5, the shaft portion 72b screwed through the front side wall portion 44A with protrusions of the holding member 40 and the interior plate 61 arranged on the front side of the holding member 40 from the front side of the interior plate 61 is screwed into the front side rod-shaped member 30. .. The head 72a of the attachment screw 72 is arranged on the front side of the interior plate 61. The attachment screw 72 tightens the protruding front side wall 44A of the holding member 40 and the interior plate 61 between the front rod-shaped member 30 into which the shaft 72b is screwed and the head 72a arranged on the front side of the interior plate 61. Fix it.

The front rod-shaped member 30 serves as a spacer for preventing deformation of the front side wall portion 44 of the holding member 40 so as to approach the intermediate partition portion 47. Therefore, as shown in FIG. 5, when the interior plate 61 is fixed to the front rod-shaped member 30 by using the mounting screw 72, the front-side rod-shaped member 30 is accompanied by the screwing of the mounting screw 72 and the interior plate 61. The deformation of the front side wall portion 44A with protrusions pressed against the surface is prevented from approaching the intermediate partition portion 47. As a result, the interior plate 61 can be attached to the wooden wall base 52 in a desired attachment orientation. Further, the screwing work of the attachment screw 72 (specifically, the shaft portion 72b) of 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 efficiently performed.

As shown in FIG. 5, the back surface of the interior plate 61 is brought into contact with the front side projection 44a of the holding member 40, and is fastened and fixed to the front side rod-shaped member 30 together with the protrusiond front side wall portion 44A by the attachment screw 72. NS. By fixing the interior plate 61 to the front rod-shaped member 30, the interior plate 61 is attached to the wooden wall base 52 via the sound insulation unit 10. That is, the interior plate 61 fixed to the front side rod-shaped member 30 is supported by the wooden wall base 52 via the back side rod-shaped member 20, the holding member 40, and the front side rod-shaped member 30.

The back surface of the flat plate-shaped interior plate 61 is brought into contact with a plurality of front side protrusions 44a of the holding member 40 (in FIG. 5, the back surface is brought into contact with the plurality of front side protrusions 44a and end protrusions 44e), and the holding member 40 abuts the holding member. It is fixed to the front side rod-shaped 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 projections 44a of the holding member 40 serve to support the interior plate 61 in a direction perpendicular to the height direction of the holding member 40.

The attachment screw 72 (specifically, the shaft portion 72b) shown in FIG. 5 does not penetrate the front rod-shaped member 30 when the head 72a abuts on the interior plate 61, and is inside the holding member 40. The partition portion 47 and the one having an axial dimension that does not reach the back side rod-shaped member 20 are adopted.
The attachment screw 72 preferably has a shaft portion 72b that does not reach the back side rod-shaped member 20 when the head 72a abuts on the front side rod-shaped member 30, and the intermediate partition portion 47 and the back side rod-shaped member 20 of the holding member 40. Those that do not reach are more preferable.

For example, the sound energy (vibration energy) given to the interior plate 61 by the sound generation in the living space S of the building 50 is directly attached to the holding member 40 in contact with the interior plate 61 or by the mounting screw 72. It is transmitted from the front side rod-shaped member 30 fixed to the holding member 40 to the holding member 40.
On the other hand, the sound energy (vibration energy) given to the wooden wall base 52 is held directly to the holding member 40 in contact with the wooden wall base 52 or from the back side rod-shaped 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 insulation unit 10, the front side rod-shaped member 30 to which the interior plate 61 is fixed is held by the holding member 40 at a distance from the back side rod-shaped member 20. In the configuration of FIG. 5, for fixing the interior plate 61 to the front bar-shaped member 30, a mounting screw 72 different from the holding member screw 71 for fixing the holding member 40 and the back bar-shaped member 20 to the wooden wall base 52 is used. I am using it. The sound insulation unit 10 does not have a member for fixing the front side rod-shaped member 30 to the back side rod-shaped member 20. The front side rod-shaped member 30 is held by only the rubber holding member 40 with respect to the back side rod-shaped member 20. The front rod-shaped member 30 can be finely moved with respect to the back rod-shaped member 20 within the elastically deformable range of the holding member 40.
The rubber holding member 40 absorbs vibration energy that tends to propagate from one of the back side rod-shaped member 20 and the front side rod-shaped member 30 to the other. Therefore, the sound insulation unit 10 suppresses or prevents the transmission of vibration energy (sound energy) from one of the interior plate 61 and the back side rod-shaped member 20 and the wooden wall base 52 and the front side rod-shaped member 30 to the other.

Further, as can be seen with reference to FIG. 5, in the wall 54, the shaft portion 72b of the mounting screw 72 for fixing the interior plate 61 to the front side rod-shaped member 30 is the front side wall of the protruding front side wall portion 44A of the holding member 40. It penetrates the position avoiding the partial screw hole 44b and is screwed into the position avoiding the screw hole 31 in the front rod-shaped member 30.
On the other hand, the holding member screw 71 for fixing the holding member 40 and the back side rod-shaped 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 that of the holding member screw 71 in the extending direction of the front surface of the wall base.
Therefore, the sound insulation unit 10 does not have a problem that the sound inside and outside the room is transmitted through the wood screw or the like and leaks in the first conventional technique described above.

As shown in FIGS. 1 (a), 4 and 5, the back side rod-shaped member 20 is inserted into the back side rod-shaped member insertion hole 48 of the holding member 40. The front rod-shaped member 30 is inserted into the front rod-shaped member insertion hole 49 of the holding member 40.
Therefore, in the work of attaching the sound insulation unit 10 to the wooden wall base 52 (structural frame 51) in the assembled state, it is possible to reliably prevent the back side rod-shaped member 20 and the front side rod-shaped member 30 from falling off from the holding member 40. As a result, the sound insulation unit 10 can improve the work efficiency of mounting on the wooden wall base 52 and constructing the wall 54 as compared with the shielding structural material described in Patent Document 1.

As described above, the holding member 40 has a back side protrusion 43a. When the back side protrusion 43a of the holding member 40 is brought into contact with the wall base vertical member 52c (structural frame 51) of the wooden wall base 52, the flat back side wall portion 43 without the back side protrusion 43a is made into the wall base vertical member 52c. Compared with the case of abutting, the portion abutting with the wall base vertical member 52c can be suppressed to be less. The contact of the back side protrusion 43a of the holding member 40 with the wall base vertical member 52c is a case where the flat back side wall portion without the back side protrusion 43a is brought into surface contact with the wall base vertical member 52c, as compared with the case where the holding member 40 is brought into surface contact with the wall base vertical member 52c. It effectively contributes to suppressing the propagation of sound energy (vibration energy) between the back side wall portion 43 and the wall base vertical member 52c.

As shown in FIG. 5, the front side projection 44a 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 comes into contact with 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 the improvement of the soundproofing performance of the wall 54.
The sound insulation unit 10 is easy to install due to the structure that employs the holding member 40 having the back side wall portion 43A with protrusions and the front side wall portion 44A with protrusions (the back side rod-shaped member 20 and the front side rod-shaped member 30 fall off from the holding member 40). It is possible to easily secure an excellent soundproofing effect.

As described above, the back side protrusion 43a and the front side protrusion 44a of the holding member 40 illustrated in FIG. 5 have a triangular cross section and are formed in a ridge shape extending in the extending direction of the holding member 40.
The back side protrusions 43a and the front side protrusions 44a come into contact with the structural skeleton 51 constituent members and the attachment 60 in terms of suppressing the propagation of sound energy (vibration energy) between the structural skeleton 51 constituent members and the attachment 60 in contact with them. It is preferable to keep the portion small. Further, the back side protrusions 43a and the front side protrusions 44a do not undergo large deformation such as buckling due to the tightening force due to screwing with the structural skeleton 51 constituent member or the attachment 60, and only the tip portion of the structural skeleton 51 constituent member or the structural skeleton 51 constituent member It is preferable that the state of contact with the attachment 60 can be kept stable.

The ridge-shaped back side protrusion 43a and the front side protrusion 44a extending in a triangular cross section have, for example, a cross-sectional width dimension perpendicular to the height direction of the holding member 40 in a cross section perpendicular to the extending direction in the height direction of the holding member 40. The contact portion with the structural skeleton 51 constituent member and the attachment 60 can be suppressed to be smaller than that of a ridge having a rectangular cross section over the entire surface. Further, the back side protrusions 43a and the front side protrusions 44a do not undergo large deformation such as buckling due to the tightening force due to screwing, and only the tip portion can be stably maintained in contact with the structural skeleton 51 constituent member or the attachment 60. ..
The protrusions 43a and the front protrusions 44a, which have a triangular cross section and extend, preferably have a protrusion angle of about 60 to 150 degrees in a cross section perpendicular to the extending direction.

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

The sound energy propagation path between the back side wall portion 43A with protrusions and the intermediate partition portion 47 due to the vibration of the holding member 40 itself in the holding member 40, and between the front side wall portion 44A with protrusions and the intermediate partition portion 47 is retained. It is limited to the portions 45a and 45b (back side plate portion 45a and front side plate portion 45b) located on both sides of the holding member 40 width direction of the front side rod-shaped member insertion holes 48 and 49 on the back side of the side wall portions 45 on both sides of the member 40.
Further, the back side and the front side rod-shaped members 20 and 30 inserted into the back side and front side rod-shaped member insertion holes 48 and 49 stabilize the shape of the portion located on the back side of the holding member 40 and around the front side rod-shaped member insertion holes 48 and 49. It plays a role of keeping it in place and preventing its deformation. The back side and front side rod-shaped members 20 and 30 inserted into the back side and front side rod-shaped member insertion holes 48 and 49 have sound energy due to vibration of the portions themselves located on the back side of the holding member 40 and around the front side rod-shaped member insertion holes 48 and 49. Suppress or prevent the propagation of.
Therefore, 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 (structural frame 51) and the interior plate 61 (attachment 60).

The sound propagating by the vibration of the air layer in the back side and front side rod-shaped members 20 and 30 inserted into the back side and front side rod-shaped member insertion holes 48 and 49 is generated by a large number of minute voids existing in the back side and front side rod-shaped members 20 and 30. It is diffused. A part of the sound propagating through the air layers in the back side and front side rod-shaped members 20 and 30 by the vibration is emitted to the outside of the sound insulation unit 10 and 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 (structural frame 51) and the interior plate 61 (attachment 60) via the sound insulation unit 10. The sound insulation unit 10 can improve the sound insulation between the wooden wall base 52 and the interior plate 61. The sound insulation unit functions as a sound propagation suppression unit that suppresses (reduces) or prevents sound propagation between the structural frame and the attachment. The sound insulation unit blocks (insulates) a part or all of the sound that is going to propagate 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 rod-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 the distance. In terms of improving the sound insulation between the wooden wall base 52 (structural frame 51) and the interior plate 61 (attachment 60), it is advantageous that the separation distance between the back side wall portion 43 and the intermediate partition portion 47 is large. be.
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 rod-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 the distance. In terms of improving the sound insulation between the wooden wall base 52 (structural frame 51) and the interior plate 61 (attachment 60), it is advantageous that the separation distance between the back side wall portion 43 and the intermediate partition portion 47 is large. be.

As described above, in the sound insulation unit 10, the shape of the portion located on the back side of the holding member 40 and around the front side rod-shaped member insertion holes 48 and 49 can be stably maintained by the back side and front side rod-shaped members 20 and 30. Therefore, even if the separation distance between the back side wall portion 43 and the intermediate partition portion 47 and the separation distance between the front side wall portion 44 and the intermediate partition portion 47 are increased, the sound insulation unit 10 can hold the holding member 40. The shape of the portions located around the rod-shaped member insertion holes 48 and 49 on the back side and the front side 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 structural material described in FIGS. 3, 5, paragraphs (0016), (0017) and the like of Patent Document 1 described above is greatly curved and deformed by fastening with screws to the structural frame. Will be done. In the configuration described in FIG. 3 and the like of Patent Document 1, in the screwing work of the screw for fixing the back plate of the shielding member to the structural skeleton, the screw is oriented perpendicular to the flat back plate before screwing. There is a risk of tilting from.

On the other hand, the sound insulation unit 10 illustrated in FIG. 5 has a back-side rod shape inserted into the back-side rod-shaped 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 back side intermediate connecting wall 47a of the holding member 40 from being deformed so that the central portion in the surface direction approaches the back side wall portion 43. The sound insulation unit 10 can stably maintain a state in which the back side intermediate connecting wall 47a is in the shape of a flat plate perpendicular to the height direction of the holding member 40 when the holding member 40 is screwed to the wooden wall base 52. Therefore, the sound insulation unit 10 can easily realize that the holding member screw 71 is screwed into the wooden wall base 52 or the like in the height direction of the holding member 40 and in the direction along the vertical line with respect to the front surface of the wooden wall base 52.

The inclination of the back intermediate connecting wall 47a of the holding member 40, the back rod-shaped member 20, the back side wall portion 43A with protrusions, and the holding member screw 71 screwed into the wooden wall base 52 from the vertical line with respect 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 may be unevenly distributed, which may reduce the 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 the direction along the vertical line with respect to the front surface of the wooden wall base 52 is the holding member screw. It is advantageous in terms of equalizing the pressing force of the holding member 40 with respect to the wooden wall base 52 by 71 and ensuring the desired sound insulation.

In the sound insulation unit 10 in the assembled state, the intermediate partition portion 47 of the holding member 40 is sandwiched by the front side rod-shaped 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 side rod-shaped member 30 with respect to the wooden wall base 52 (structural frame 51) via the holding member 40 and the back side rod-shaped member 20.

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

The back side protrusions 43a and the front side protrusions 44a of the holding member 40 shown in FIG. It also effectively contributes to suppressing the propagation of heat between the constituent members and the attachment 60. The holding member 40 having the back side protrusion 43a and the front side protrusion 44a also effectively contributes to the improvement of the heat insulating property of the wall 54 (improvement of the heat insulating property between the structural frame 51 and the attachment 60).

Further, the sound insulation unit 10 uses the back side and front side rod-shaped members 20 and 30 made of wood-based material having a lower thermal conductivity (high heat insulation) than metal. Therefore, the sound insulating unit 10 has a heat insulating property between the structural frame 51 and the attachment 60, as compared with a configuration using a metal front frame member and a back frame member as in the shielding structural 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 screw 71 penetrated through the back side rod-shaped member 20 made of wood material having a lower thermal conductivity (higher heat insulating property) than metal is attached to the wooden wall base 52. Screw into. The structure in which the holding member screw 71 penetrates through the back side rod-shaped member 20 made of wood material is a portion of the holding member screw 71 located on the living space S side from the wooden wall base 52 (hereinafter, also referred to as an indoor side protrusion). Effectively contributes to the prevention of dew condensation around the area.

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 member) 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, a 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 inside the living space S of the building 50, the chamber of the holding member screw 71 The inner protrusion tends to have a temperature between the temperature of the wooden wall base 52 and the temperature inside the living space S.

Temporarily, the back side rod-shaped member 20 is omitted from the sound insulation unit 10 shown in FIG. 5, and the entire portion of the holding member screw 71 located in the back side rod-shaped member insertion hole 48 (hereinafter, also referred to as an exposed portion in the insertion hole) is When the temperature of the exposed portion in the insertion hole of the holding member screw 71 is lower than the air temperature in the back side rod-shaped member insertion hole 48 and the temperature difference is large, the holding member screw 71 is held when it is in direct contact with the air in the back side rod-shaped member insertion hole 48. 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 holding member screw 71, so that the moisture contained in the air is released on the surface of the exposed portion in the insertion hole. The amount of generation increases as it condenses in sequence.

On the other hand, the air in the back side rod-shaped member 20 penetrating the holding member screw shaft portion 71b is held in a minute gap in the back side rod-shaped member 20 made of wood-based material, and there is almost no movement thereof.
Further, when the temperature of the portion of the holding member screw shaft portion 71b located in the back side rod-shaped member 20 (hereinafter, also referred to as the rod-shaped member insertion portion) is different from the air temperature around the back side rod-shaped member 20, it is made of wood-based material. The temperature of the air layer in the back side rod-shaped member 20 becomes an intermediate temperature between the temperature of the rod-shaped member insertion portion of the holding member screw 71 and the air temperature around the back side rod-shaped member 20.
Therefore, in the sound insulation unit 10, when the temperature of the insertion portion of the holding member screw 71 inside the rod-shaped member is lower than the air temperature around the back side rod-shaped member 20, the back-side rod-shaped member 20 causes the inside of the rod-shaped member of the holding member screw 71 to be inside the rod-shaped member. Condensation on the surface of the insertion part 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 rod-shaped member 20, dew condensation on the surface of the head 71a is less likely to occur.
When the temperature of the rod-shaped 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, in the rod-shaped member insertion portion of the holding member screw 71, the end portion on the back side intermediate connecting wall 47a side is closer to the air temperature around the back side rod-shaped member 20 than the end portion on the wooden wall base 52 side. It tends to be temperature. In the sound insulation unit 10, the larger the cross-sectional dimension of the holding member 40 in the height direction of the back side rod-shaped member 20, the longer the length of the rod-shaped member insertion portion of the holding member screw 71 (hereinafter, also referred to as the rod-shaped member penetrating shaft length). It is advantageous in that the temperature of the head 71a of the holding member screw 71 can be brought close to the air temperature around the back rod-shaped member 20.
The sound insulation unit 10 has dew condensation on the surface of the holding member screw head 71a by setting the dimensions 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 side rod-shaped member 20. Prevention can be easily realized.

The cutting edge 71c of the holding member screw 71 is formed over the entire axial length of the holding member screw shaft portion 71b.
There is no air flowable gap between the back side intermediate connecting wall 47a of the holding member 40 into which the holding member screw 71 is screwed, the back side rod-shaped member 20, the back side wall portion 43A with protrusions, the wooden wall base 52, and the holding member screw 71. It will be in a substantially close state. Therefore, the side circumference of the rod-shaped member insertion portion of the holding member screw 71 is covered with the air layer in the back side rod-shaped member 20.
Further, in the holding member screw shaft portion 71b, the side circumference of the portion penetrated through the back side intermediate connecting wall 47a of the holding member 40 and the back side wall portion 43A with protrusions is a rubber back side intermediate connecting wall 47a and the back side wall with protrusions. It is in a state of being covered with the portion 43A. Therefore, dew condensation is unlikely to occur on the side circumference of the portion of the holding member screw shaft portion 71b that penetrates the back side intermediate connecting wall 47a and the back side wall portion 43A with protrusions.

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

The grooves 47o and 47p on both sides of the holding member 40 in the width direction are formed for adjusting the bending strength of the holding member 40 and the compressive strength with respect to the compressive force in the height direction of the holding member 40. If the formation depth of the grooves 47o and 47p is deep, the bending strength of the holding member 40 and the compressive strength with respect to the compressive force in the height direction of the holding member are low. The compressive strength with respect to the strength and the compressive force in the height direction of the holding member becomes high.
The holding member 40 is, for example, a holding member 40 in which the formation depths of the grooves 47o and 47p are different from each other depending on the stable support of the load of the attachment 60 supported on the structural frame, the securing of the required cushioning property, and the like. 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, and for example, U-grooves, semicircular grooves and the like are also included. It can be adopted.
Further, the holding member is not limited to a configuration having grooves 47o and 47p, and a configuration not having grooves 47o and 47p can also be adopted.

As described above, the sound insulation unit 10 can also be used for the floor 55 (see FIGS. 6 and 7) of the building 50.
In the floor 55 shown in FIG. 7, the sound insulation unit 10 abuts the back side protrusion 43a of the holding member 40 against the rough plate 53b and the front side protrusion 44a against the floor body base plate 62, thereby causing the wooden floor base 53. It is provided between the floor body base plate 62 and the floor body base plate 62.

As shown in FIG. 6, the sound insulation unit 10 of the floor 55 is provided on the joist 53a with the longitudinal directions of the rod-shaped members 20 and 30 on the back side and the front side aligned with the longitudinal direction of the joist 53a.
On the floor 55 shown in FIG. 6, a plurality of sound insulation units 10 are provided so that the longitudinal directions of the rod-shaped members 20 and 30 on the back side and the front side are aligned in parallel with each other. The floor 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 parallel to the floor base front surface.

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

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

As shown in FIG. 7, the back surface (lower surface) of the floor body base plate 62 is brought into contact with the front side projection 44a of the holding member 40, and the front side rod-shaped member 30 together with the protrusiond front side wall portion 44A is provided by the attachment screw 72. It is fastened and fixed together. The floor body base plate 62 is attached to the wooden floor base 53 via the sound insulation unit 10 by fixing it to the front side rod-shaped member 30. That is, the floor body base plate 62 fixed to the front side rod-shaped member 30 is supported by the wooden floor base plate 53 via the front side rod-shaped member 30, the holding member 40, the back side rod-shaped member 20, and the rough plate 53b.

The attachment screw 72 shown in FIG. 7 does not penetrate the front side rod-shaped member 30 in a state where the head 72a is in contact with the floor body base plate 62, and the intermediate partition portion 47 and the back side rod-shaped member 20 of the holding member 40 do not penetrate. The shaft portion 72b having an axial dimension that does not reach the above is adopted.
The attachment screw 72 preferably has a shaft portion 72b that does not reach the back side rod-shaped member 20 when the head 72a abuts on the front side rod-shaped member 30, and the intermediate partition portion 47 and the back side rod-shaped member 20 of the holding member 40. Those that do not reach are more preferable.

In FIG. 7, the shaft portion 72b of the mounting screw 72 penetrates the position of the holding member 40 in the front side wall portion 44A with protrusions avoiding the front side wall portion screw hole 44b, and avoids the screw hole 31 in the front side rod-shaped member 30. Screwed into position.
The holding member screw 71 for fixing the holding member 40 and the back side rod-shaped member 20 to the wooden floor base 53 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 that of the holding member screw 71 in the extending direction of the front surface of the floor base.

When the sound insulation unit 10 is used for the floor 55 as shown in FIGS. 6 and 7, the rod-shaped members 20 and 30 on the back side and the front side are inserted into the rod-shaped member insertion holes 48 and 49 on the back side and the front side of the holding member 40. In the work of attaching the holding member screw 71 to the wooden floor base 53 in this state, it is possible to reliably prevent the back side rod-shaped member 20 and the front side rod-shaped member 30 from falling off from the holding member 40.
Further, in the sound insulation unit 10, the back side protrusion 43a and the front side protrusion 44a can reduce the contact portion of the holding member 40 with the wooden floor base 53 (specifically, the rough plate 53b) and the floor body base plate 62. .. Therefore, if the sound insulation unit 10 is used, the floor 55 having excellent soundproofing properties can be easily obtained.
Further, since the sound insulation unit 10 can improve the heat insulating property between the structural frame 51 and the attachment 60, it is between the wooden floor base 53 and the floor body 55A including the floor body base plate 62 (attachment 60). Effectively contributes to the improvement of heat insulation.

As shown in FIGS. 8 (a), 8 (b), 9 (a), and 9 (b), the back side protrusions of the holding member are scattered at 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 protrusions (columnar protrusions) and the cone-shaped protrusions (conical protrusions) project from the back side wall portion to the back side of the holding member.
As the front side protrusions of the holding member, columnar protrusions and cone-shaped protrusions that can be used for the back side protrusions can be adopted. The columnar protrusions and cone-shaped protrusions are scattered at a plurality of locations on the outer (front side) surface of the front side wall portion, and project from the front side wall portion to the front side of the holding member.

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

The building component (hereinafter, also referred to as the component to be attached) for fixing the holding member and the back rod-shaped member of the sound insulation unit using the holding member screw is a structural frame 51 such as a wooden wall base 52 and a wooden floor base 53. It is not limited to the constituent members of. The component to be attached may be a building component supported by a component of the structural frame 51, such as a field edge of a ceiling. When the sound insulation unit 10 is provided on the ceiling, for example, the holding member 40 and the back rod-shaped member 20 are plate-shaped on the front rod-shaped member 30 of the sound insulation unit 10 fixed to the field edge of the ceiling by using the holding member screw 71. The ceiling material (attachment) is fixed using the attachment screw 72.
Further, the component to be attached may be a structural material (building structural material) such as a beam or a pillar exposed in the living space.

The interior plate 61 for the wall (see FIG. 2 and the like), the floor body base plate 62 (see FIG. 6 and the like) constituting the floor, and the ceiling material are building constituent members. The building constituent members (for example, the interior plate 61 for the wall, the floor body base plate 62, and the ceiling material) used for the attachment are also hereinafter referred to as building constituent attachments.
The attachment is not limited to the building composition attachment.
As the attachment, for example, various devices such as an image display panel, a speaker, an air conditioner, and the like can be adopted.

The attachment is supported by the attachment target component via the sound insulation unit by attaching the holding member and the back side rod-shaped member to the front rod-shaped member of the sound insulation unit attached to the attachment target component. As described above, the component to be attached is a component of the structural skeleton 51 or a building component supported by the component of the structural skeleton 51. When the component to be attached to which the sound insulation unit is attached is a component of the structural skeleton, the attachment attached to the front rod-shaped member of the sound insulation unit is supported by the structural skeleton via the sound insulation unit. When the component to be attached to which the sound insulation unit is attached is a building component supported by the component of the structural skeleton, the attachment attached to the front rod-shaped member of the sound insulation unit is the sound insulation unit and the structural skeleton 51. It is supported by the structural frame via the building components supported by the components.
The component to be mounted is also hereinafter referred to as a skeleton side component.

The interior plate 61 for the wall (see FIG. 2 etc.), the floor body base plate 62 (see FIG. 6 etc.) constituting the floor, and the ceiling material are structures forming the inner surface of the living space in the building (hereinafter, inner surface formation). It is a component of (also called a structure). The inner surface forming structure includes walls, floors, etc. in addition to the ceiling.
Further, the inner surface forming structure also corresponds to a roof when there is no ceiling in the building and the roof forms the upper inner surface of the living space. A constituent member (building constituent member) such as a roof purlin, which is an inner surface forming structure, can be suitably used as a skeleton side constituent member.

10 to 13 show another aspect of the sound insulation unit and the holding member.
The sound insulation unit shown in FIGS. 10 to 13 differs from the sound insulation unit 10 shown in FIG. 1A and the like only in the configuration of the holding member. The configuration 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 FIGS. 1 (a) and the like.

The holding member 40A of the sound insulation unit 10A shown in FIG. 10 has a wall shape in which the partition portion inner space 47e is not formed in place of the intermediate partition portion 47 of the holding member 40 illustrated in FIG. 1A and the like. The intermediate partition portion 47A is adopted.
Hereinafter, the intermediate partition portion 47A is also referred to as an intermediate partition wall.

The holding member 40A shown in FIG. 10 is an integrally molded product made entirely of rubber, including the intermediate partition wall 47A. The intermediate partition wall 47A is integrally formed with the rubber holding member outer cylinder portion 46.
The holding member 40A is different from the holding member 40 shown 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 portion 47A is the same as that of the holding member 40 shown in FIG. 1A and the like.
Regarding the holding member 40A of FIG. 10, the same components as those of the holding member 40 of FIG. 1A are designated by the same reference numerals as those of FIG. 1A, and the description thereof will be omitted.

The intermediate partition portion 47A of the holding member 40A shown in FIG. 10 is formed in a wall shape extending vertically in the holding member height direction between the back side wall portion 43 and the front side wall portion 44, and is formed on both sides in the holding member width direction. The side wall portion 45 of the above is 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 central portion in the surface direction of the intermediate partition wall 47A of the holding member 40A shown in FIG. There is. The screw shaft portion insertion hole 47f is formed so as to penetrate the intermediate partition wall 47A in the height direction of the holding member. 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 central 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 so as to extend over the entire length in the axial direction (holding member height direction) with a constant cross-sectional dimension. The screw shaft portion insertion hole 47f is formed so as to extend with 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.
The screw shaft portion insertion hole 47f of the holding member 40A shown in FIG. 10 is a hole extending with a circular cross section. However, the cross-sectional shape of the screw shaft portion insertion hole 47f perpendicular to the extending direction is not limited to a circle. The cross-sectional shape of the screw shaft portion insertion hole 47f perpendicular to the extending direction may be a polygon such as an ellipse or a quadrangle.
At the rim around the opening of the screw shaft insertion hole 47f on the front surface of the holding member 40A of the intermediate partition wall 47A, the head of the holding member screw 71 in which the shaft 71b is inserted into the screw shaft insertion hole 47f. The 71a can be brought into contact with the holding member from the front side.

In the holding member 40B of the sound insulation unit 10B shown in FIG. 11, the holding member 40A shown in FIG. 10 is formed with an intermediate partition screw hole 47g having a configuration different from that of the screw shaft insertion hole 47f instead of the intermediate partition wall 47A. This is the one that adopted the intermediate partition wall 47B (intermediate partition). The intermediate partition wall 47B of the holding member 40B shown in FIG. 11 is formed with an intermediate partition screw hole 47g having a configuration different from that of the screw shaft insertion hole 47f. Different from.

The configuration of the holding member 40B shown in FIG. 11 other than the intermediate partition screw hole 47g is the same as that of the holding member 40A shown in FIG.
Regarding the holding member 40B of FIG. 11, the same components as those of the holding member 40A of FIG. 10 are designated by the same reference numerals as those of FIG. 10, and the description thereof will be omitted.

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

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

The expansion hole portion 47h of the intermediate partition portion screw hole 47g of the holding member 40B shown in FIG. 11 can accommodate the head 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 partition screw hole 47g and the screw shaft insertion hole 47h, the head 71a of the holding member screw 71 in which the shaft 71b is inserted into the screw shaft insertion hole 47h is provided. It can be brought into contact from the front side of the holding member.

The holding members 40A and 40B shown in FIGS. 10 and 11 have a simpler structure and are easier to manufacture than the holding members 40 illustrated in FIGS. 1A and the like. Further, the holding members 40A and 40B have a smaller number of parts than the holding member 40 illustrated in FIG. 1A and the like because there is no reinforcing member 41. Therefore, the holding members 40A and 40B shown in FIGS. 10 and 11 can be obtained at low cost.

The holding member 40 illustrated in FIG. 1A and the like is a skeleton-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 having excellent heat insulating properties. It is possible to secure high heat insulation between the object and the attachment.
Further, the holding member 40 illustrated in FIG. 1A and the like 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 structure in which the pair of side wall portions 45 have a holding protrusion 47k protruding toward the inner surface facing each other instead of the intermediate partition portion.
The sound insulation unit 10C shown in FIG. 12 employs a holding member 40C having a holding protrusion 47k instead of the intermediate partition wall 47 for the holding member 40 illustrated in FIG. 1A and the like.

The holding member 40C is different from the holding member 40 illustrated in FIG. 1A and the like only in that the holding protrusion 47k is adopted instead of the intermediate partition wall 47. The configuration of the holding member 40C in the sound insulating unit 10C shown in FIG. 12 other than the holding protrusion 47k is the same as that of the sound insulating unit 10 illustrated in FIG. 1A and the like.
Regarding the holding member 40C of FIG. 12, the same components as those of the holding member 40 of FIG. 1A are designated by the same reference numerals as those of FIG. 1A, and the description thereof will be omitted.

The holding protrusions 47k of the holding member 40C shown in FIG. 12 are integrally formed with the side wall portions 45 on both sides of the holding member 40C in the width direction.
The holding member 40C shown in FIG. 12 is inserted into an inner back side rod-shaped member surrounded by holding protrusions 47k on both sides in the width direction (interval direction of a pair of side wall portions 45), a back side wall portion 43, and side wall portions 45 on both sides. The back side rod-shaped member 20 can be held in the hole 48A.
Further, the holding member 40C can hold the front side rod-shaped member 30 in the inner front side rod-shaped member insertion hole 49A surrounded by the holding protrusions 47k on both sides in the width direction, the front side wall portions 44, and the side wall portions 45 on both sides.
The sound insulation unit 10C using the holding member 40C holds the back side and front side rod-shaped members 20 and 30 inserted through the back side and front side rod-shaped member insertion holes 48A and 49A in the holding member 40C when attached to the skeleton side component. It is possible to keep the state in a stable state.

The holding protrusions 47k on both sides of the holding member 40C shown in FIG. 12 in the width direction do not exist on the extension of the screw hole 44b on the front side wall. The holding protrusions 47k on both sides of the holding member 40C in the width direction are provided so as to be separated from each other on both sides in the width direction of the holding member via a virtual extension of the screw holes 44b of the front side wall portion.
In the sound insulation unit 10C shown in FIG. 12, the back side rod-shaped member 20 is formed by the head portion 71a of the holding member screw 71 in which the shaft portion 71b penetrating the front side rod-shaped member 30 and the back side wall portion 43A with protrusions is screwed into the skeleton side component member. Can be fastened and fixed to the skeleton side constituent member together with the back side wall portion 43A with protrusions, and attached to the skeleton 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 to the back side wall portion 43A with protrusions. Therefore, in the sound insulation unit 10C, the separation distance between the holding member screw 71 and the back side rod-shaped member 20 and the front side rod-shaped member 30 can be secured larger than that in the sound insulation unit 10 shown in FIG. 1A and the like. As a result, the sound insulation unit 10C can obtain higher sound insulation performance (soundproofing performance) than the sound insulation unit 10 shown in FIG. 1A and the like.
However, since the sound insulation unit 10 shown in FIG. 1A and the like and the sound insulation units 10A and 10B shown in FIGS. 10 and 11 use a holding member having an intermediate partition portion 47, the sound insulation unit 10 shown in FIG. 12 is used. Compared to the unit 10C, it is possible to secure a large contact portion of the holding member with respect to the back side rod-shaped member 20, which is advantageous in terms of shape stability of the holding member.

As shown in FIG. 13, the sound insulation unit has two holding protrusions (back side holding protrusion 47m and front side holding protrusion 47m) that are separated from each other in the height direction of the holding member instead of the holding protrusions 47k of the holding member 40C shown in FIG. It is also possible to adopt the holding member 40D having 47n).
The configuration of the holding member 40D shown in FIG. 13 other than the back side holding protrusion 47m and the front side holding protrusion 47n is the same as that of the holding member 40C shown in FIG. In the sound insulation unit 10D shown in FIG. 13, the holding projection 47k of the holding member 40C of the sound insulating unit 10C shown in FIG. 12 does not exist, and only the point having the back side holding projection 47m and the front side holding projection 47n is the sound insulation shown in FIG. It is different from the unit 10C.

The back side holding protrusion 47m and the front side holding protrusion 47n of the holding member 40D shown in FIG. 13 are projected from each of the side wall portions 45 on both sides in the width direction of the holding member 40D so as to face each other.
The back side holding protrusion 47m and the front side holding protrusion 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 rod-shaped member 20 in the inner back side rod-shaped member insertion hole 48B surrounded by the back side holding protrusions 47 m on both sides in the width direction, the back side wall portions 43, and the side wall portions 45 on both sides. can. Further, in the holding member 40D shown in FIG. 13, the front side rod-shaped member 30 is formed in the inner front side rod-shaped member insertion hole 49B surrounded by the front side holding protrusions 47n on both sides in the width direction, the front side wall portions 44, and the side wall portions 45 on both sides. Can be retained.

The back side holding protrusion 47m and the front side holding protrusion 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 protrusions 47m and the front side holding protrusions 47n on both sides of the holding member 40D in the width direction are provided so as to be separated from each other on both sides in the width direction of the holding member via a virtual extension of the screw holes 44b on the front side wall.

In the holding member 40D of the sound insulation unit 10D shown in FIG. 13, the back side holding protrusion 47m in contact with the back side rod-shaped member 20 and the front side holding protrusion 47n in contact with the front side rod-shaped member 30 are positioned apart from each other in the holding member height direction. It is configured to do. Therefore, the sound insulation unit 10D shown in FIG. 13 has sound energy (vibration energy) via the holding member 40D between the back side rod-shaped member 20 and the front side rod-shaped member 30 as compared with the sound insulation unit 10C shown in FIG. Propagation can be reduced. Therefore, the sound insulation unit 10D shown in FIG. 13 can obtain higher sound insulation performance (soundproofing performance) than the sound insulation unit 10C shown in FIG.

As shown in FIG. 14, as the holding member, a configuration in which the reinforcing member 41 is housed in the partition portion inner space 47e of the intermediate partition portion 47 of the holding member 40 illustrated in FIG. 1A or the like can also be adopted. The holding member 40E shown in FIG. 14 is also hereinafter referred to as a holding member with a reinforcing member.
14 and 15 illustrate a sound insulation unit 10E that employs a holding member 40E with a reinforcing member.

The holding member 40 of the holding member 40E with a reinforcing member shown in FIG. 14 is also hereinafter referred to as a holding member main body.
The reinforcing member 41 of the holding member 40E with a reinforcing member shown in FIG. 14 is a member formed of a forming material having a higher bending strength than the holding member main body 40.
The reinforcing member 41 housed 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 has a structural frame of the attachment 60 that has a larger load than the sound insulation unit 10 (see FIG. 5) that uses the holding member 40 that does not incorporate the reinforcing member 41. It is advantageous for support for 51. The sound insulation unit 10E that employs the holding member 40E with a reinforcing member supports the attachment 60, which has a larger load than the sound insulation unit 10 (see FIG. 5) that uses the holding member 40 that does not incorporate the reinforcing member 41. Can be used for.

In addition, in FIG. 15, the wall 54E having a structure in which the sound insulation unit 10E is used instead of the sound insulation unit 10 for the wall 54 illustrated in FIG. 5 is illustrated. However, the use of the sound insulation unit 10E is not limited to the wall. 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 40E with a reinforcing member shown in FIG. 14 is formed in a plate shape.
The reinforcing member 41 is accommodated over the entire partition portion inner space 47e of the intermediate partition portion 47 of the holding member 40. One of both sides (both sides in the thickness direction) of the reinforcing member 41 is in contact with the back side intermediate connecting wall 47a, and the other is in contact with the front side intermediate connecting wall 47b. More specifically, one of both sides (both sides in the thickness direction) of the reinforcing member 41 is in contact with the surface on the inner space 47e side of the partition portion of the back side intermediate connecting wall 47a over the entire surface, and the other side is in contact with the surface on the front side intermediate connecting wall 47a over the entire surface. It is in contact with the surface of 47b on the inner space 47e side of the partition portion.
The reinforcing member 41 also functions as a spacer for preventing the distance between the pair of intermediate connecting walls 47a and 47b from becoming narrower from the state in which the intermediate connecting walls 47a and 47b are in contact with the reinforcing member 41.

As the reinforcing member 41 of the intermediate partition portion 47, a member having excellent heat insulating properties and to which a holding member screw 71 can be screwed is adopted. In the holding member 40E with a reinforcing member 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 is elastically deformable and has a high shape restoration rate after deformation can be preferably used. As the material for forming the reinforcing member 41 made of a foamed resin body, for example, expanded polystyrene, expanded polyurethane, or the like can be preferably used. More specifically, the reinforcing member 41 of the holding member 40 shown in FIGS. 14 and 15 is a member made of expanded polystyrene.

As shown in FIG. 15, in the reinforcing member 41 made of a foamed resin body, the portion in contact with the holding member screw head 71a is destroyed by the screwing operation of the holding member screw 71, and the holding member screw head 71a is accommodated. The one capable of forming the recess 42 is adopted.
The holding member screw 71 reinforces the shaft portion 71b through which the front side rod-shaped member screw hole 31 and the front side wall portion screw hole 44b have 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. In the holding member screw 71, the holding member screw head 71a breaks the portion of the reinforcing member 41 in contact with the holding member screw head 71a by screwing the screw shaft portion 71b into the reinforcing member 41 to form a recess 42. do.

The holding member screw 71 screwes the shaft portion 71b into the reinforcing member 41 in the back side direction of the holding member 40 (direction of the structural skeleton 51 component member that fixes the holding member 40), whereby the head 71a is screwed into the back side of the holding member 40. It is brought into contact with the intermediate connecting wall 47a. The holding member screw 71 can bring the screw head 71a into contact with the back intermediate connecting wall 47a of the holding member 40 by screwing the shaft portion 71b into the reinforcing member 41. When the screw head 71a of the holding member screw 71 is screwed into the reinforcing member 41 and the screw head 71a comes into contact with the back intermediate connecting wall 47a of the holding member 40, further screwing into the holding member 40 is restricted. The holding member screw head 71a is housed in a recess 42 formed in the reinforcing member 41 by screwing the holding member screw shaft portion 71b into the reinforcing member 41.

The screw shaft portion 71b of the holding member screw 71 is screwed into the reinforcing member 41 so that the holding member screw head 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 protrusions, and is screwed into the structural frame 51 constituent member. The screw shaft portion 71b of the holding member screw 71 is screwed into the structural skeleton 51 constituent member when the screw head 71a comes into contact with the back side intermediate connecting wall 47a of the holding member 40. The holding member screw 71 is inserted between the structural skeleton 51 component member into which the screw shaft portion 71b is screwed and the head 71a, the back side intermediate connecting wall 47a, and the inside of the holding member outer cylinder portion 46 of the back side rod-shaped member 20. The portion and the back side wall portion 43A with protrusions are sandwiched and fixed (tightened and fixed).

As described above, the reinforcing member 41 has a recess 42 (FIGS. 5, FIG. 5) in which the portion of the reinforcing member 41 in contact with the holding member screw head 71a is destroyed by the screwing operation of the holding member screw 71, and the holding member screw head 71a is accommodated. It is made of a foamed resin body capable of forming (see 7). In the holding member screw 71, the holding member screw head 71a breaks the portion of the reinforcing member 41 in contact with the holding member screw head 71a by screwing the screw shaft portion 71b into the reinforcing member 41 to form a recess 42. do.

In the sound insulation unit 10E shown in FIGS. 14 and 15, the intermediate partition portion 47 of the holding member main body 40 is selected by selecting the 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 main body 40. The bending strength of is adjustable.
Further, the use of the holding member 40 having the reinforcing member 41 made of a foamed resin body having excellent heat insulating properties in the intermediate partition portion 47 effectively contributes to the improvement of the heat insulating properties between the structural frame 51 and the attachment 60.

Although the present invention has been described above based on the best mode, the present invention is not limited to the above-mentioned 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-based material such as wood. As the forming material of the reinforcing member made of wood-based material, the same forming material that can be adopted for the rod-shaped members on the back side and the front side can be adopted.
The holding member screw 71 for fixing the sound insulation unit 10E adopting the holding member 40E having the reinforcing member 41 made of wood-based material to the skeleton side constituent 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. Then, the holding member screw 71 has a reinforcing member 41, a back side intermediate connecting wall 47a, and a back side between the skeleton side component member into which the shaft portion 71b is screwed and the head 71a brought into contact with the reinforcing member 41. The rod-shaped member 20 and the back side wall portion 43A with protrusions are tightened and fixed, and the holding member 40 is attached (fixed) to the skeleton side constituent member together with the back side rod-shaped member 20.

The skeleton side component to which the sound insulation unit is attached may be a building component provided on the outer surface side of the building part of the structural skeleton of the building, or on the outer surface side of the building part supported by the structural skeleton. In this case, the attachment to be attached to the sound insulation unit and supported on the skeleton side component 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 rod-shaped member, 30 ... Front side rod-shaped member, 31 ... (Front side rod-shaped member) screw holes, 40, 40A, 40B, 40C, 40D, 40E ... Holding member, 41 ... Reinforcing member, 42 ... Recess, 43 ... Back side wall, 43A, 43B, 43C ... Back side wall with protrusion, 43a ... Back side protrusion, 44 ... Front side wall, 44A ... Front side wall with protrusion, 44a ... front side protrusion, 44b ... hole (front side wall part screw hole), 45 ... side wall part, 46 ... holding member outer cylinder part, 47 ... intermediate partition part, 47a ... intermediate connecting wall (back side intermediate connecting wall), 47b ... intermediate Connecting wall (front side intermediate connecting wall), 47c ... Protruding wall, 47d ... Front side connecting wall screw hole, 47e ... Partition inside space, 47f ... Screw shaft insertion hole, 47g ... Intermediate partition screw hole, 47h ... Screw shaft Part insertion hole, 47i ... Expansion hole, 47j ... Step, 47k ... Holding protrusion, 47m ... Back side holding protrusion, 47n ... Front side holding protrusion, 47o ... Groove (partition inner groove), 47p ... Groove (side central groove) ), 48, 48A, 48B ... Back side rod-shaped member insertion hole, 49, 49A, 49B ... Front side rod-shaped member insertion hole,
50 ... building, 51 ... structural skeleton, 52 ... wooden wall base (structural skeleton), 52a ... (building component, skeleton side component), 52b ... interpost (building component, skeleton side component), 52c ... Wall base vertical member (building component, skeleton side component), 53 ... Wooden floor base (structural skeleton), 53a ... (building component, skeleton side component), 53b ... Rough plate (building component) , Frame side component), 54, 54E ... Wall, 55 ... Floor, 55A ... Floor body, 60 ... Attachment, 61 ... Interior plate (attachment, building composition attachment), 62 ... Floor body support plate (attachment) Object, building composition attachment), 63 ... floor material, 71 ... screw (holding member screw), 71a ... head, 71b ... shaft, 71c ... cutting edge, 72 ... attachment screw, 72a ... head , 72b ... Shaft, 81 ... Fiber sound absorbing material.

Claims (4)

A sound insulation unit disposed between a building component and an attachment attached to the building component.
It has a back side rod-shaped member supported by the building constituent member, a front side rod-shaped member to which the attachment is attached, and a holding member made of an elastic material and holding the back side and front side rod-shaped members with a certain gap. death,
The holding member is a rectangular tubular holding member composed of a back side wall portion arranged on the building constituent member side, a front side wall portion provided in parallel with the back side wall portion, and a pair of side wall portions. The back side wall portion and the front side wall portion have an outer cylinder portion, and the back side and front side rod-shaped members inserted into the inside of the holding member outer cylinder portion are inserted at one or a plurality of positions of the pair of side wall portions. A holding protrusion is provided to hold the parts apart from each other in the spacing direction.
A sound insulation unit characterized in that protrusions are provided at a plurality of locations on the outer surface side of the back side wall portion. The sound insulation unit according to claim 1, 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 claim 1 or 2, wherein the rod-shaped members on the back side and the front side are each made of a wood-based material that can be cut by using a hand tool. The claim is characterized in that the holding member has a shorter size than the rod-shaped members on the back side and the front side, and a plurality of the holding members are provided at intervals in the longitudinal direction of the rod-shaped members on the back side and the front side. The sound insulation unit according to any one of 1 to 3.

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