JP2018123669A - Vibration absorption member, partition structure of building provided with the same and installation method of vibration absorption member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively absorb vibration of a face bar, and to improve workability in construction.SOLUTION: A vibration absorption member 30 is provided at a wall, and includes at least one of glass wool and rock wool, a sheet-like elastic member 32 placed with it contacted to the surface of a face bar 10, and a plurality of weights 34 including weight bodies 34a having specific gravity higher than the elastic member 32 and an adhesion layers 34b mediated between the weight bodies 34a and the elastic member 32 to adhere these. Clearances d1 between the weights 34 set not less than a predefined distance (distance being two times standard distance d_A), and clearances d2, d3 between side end faces 32e, 32f of the elastic member 32 and the weight 34 most close to this set not less than a predefined distance (standard distance d_A).SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vibration absorbing member that is disposed on the surface of a face member that partitions a space in a building and absorbs vibration of the face member, a partition structure of the building including the same, and a method for installing the vibration absorbing member.

  Conventionally, in a building such as a house, a vibration absorbing member for improving sound insulation on a surface partitioning a section in the building has been studied.

  For example, Patent Document 1 discloses a ceiling structure for suppressing impact sound propagating from an upper floor to a lower floor. This structure consists of a ceiling plate constituting the ceiling surface, a plurality of field edges extending in a predetermined direction to support the ceiling board, and a plurality of field edges extending in a direction perpendicular to the field edges and connecting the field edges to each other. And a plurality of dynamic dampers each including a mass body and an elastic body fixed to a portion of each field edge receiver that intersects the field edge. In this structure, each dynamic damper can absorb the field edge and hence the vibration of the ceiling board, and can improve the sound insulation of the ceiling portion.

Japanese Patent No. 5445862

  However, in the structure of Patent Document 1, the dynamic damper is fixed to the field edge receiver, and the vibration of the ceiling plate is absorbed by the dynamic damper only through the field edge receiver and the field edge. Therefore, the vibration of the ceiling board cannot be effectively absorbed. In addition, if a dynamic damper and a field guard for fixing the dynamic damper are provided over the entire ceiling panel in order to suppress the vibration of the entire ceiling panel, a large number of field receivers are fixed to the field edge, and more The damper must be fixed to the field guard, and the work becomes complicated.

  The present invention has been made in view of the above circumstances, a vibration absorbing member capable of more effectively absorbing the vibration of the face material and improving workability during construction, An object of the present invention is to provide a partition structure for a building and a method for installing a vibration absorbing member.

  In order to solve the above problems, the present invention provides a vibration absorbing member that is disposed on the surface of a face material that partitions a space in a building and absorbs vibration of the face material, and includes at least one of glass wool and rock wool. A sheet-like elastic member disposed in contact with the surface of the face material and extending along the surface; and a predetermined surface set in advance on the surface of the elastic member opposite to the face material. A plurality of weights fixed at intervals greater than a distance, the weight having a specific gravity higher than that of the elastic member, and interposed between the weight body and the elastic member. A vibration-absorbing member, wherein a separation distance between a side end surface of the elastic member and a weight closest to the elastic member is set to be a half or more of the predetermined distance. provide.

  In this vibration absorbing member, a sheet-like elastic member to which a plurality of weights are fixed is disposed in contact with the surface of the face material. Therefore, the reaction force of the weight can be effectively propagated to the face material to suppress the vibration of the face material, and the sound insulation of the face material can be enhanced.

  Moreover, since the plurality of weights are fixed to the common sheet-like elastic member, the plurality of weights can be simultaneously installed on the surface of the face material by installing one vibration absorbing member. Therefore, workability can be improved compared with the case where a plurality of weights and elastic members for fixing the weights are individually provided.

  On the other hand, when a plurality of weights are provided on the surface of the common elastic member as described above, the weights interfere with each other, and the deformation of the elastic member affects the resonance of the adjacent weight, and the reaction force of each weight is There is a possibility that vibrations at a desired frequency of the face material cannot be absorbed by each weight because the weight is not properly propagated to the face material.

  On the other hand, in this structure, the distance between the plurality of weights is set to be equal to or greater than a predetermined distance, and the distance between the side end surface of the elastic member and the weight closest thereto is the predetermined distance. The distance between the weight and the weight and the side end surface of the elastic member is set so as to be more than the distance necessary to propagate the vibration of the desired frequency of the face material to the weight body. Yes. That is, each weight and the weight main body are independently allocated with elastic member regions capable of propagating vibrations of the desired frequency of the face material. Therefore, each weight main body can appropriately absorb vibration of a desired frequency. Furthermore, the adhesive layer for adhering the weight main body to the elastic member is also separated by the predetermined distance or more, like the weight main body. Therefore, it is possible to suppress the vibrations of the weight bodies from interfering with each other via the adhesive layer, and the sound insulation can be more reliably improved.

  In this vibration absorbing member, the elastic member includes at least one of glass wool and rock wool. Therefore, the elastic member can be configured at a relatively low cost, and the effect of enhancing the heat insulating performance of the face material can be obtained by the elastic member.

  In the above configuration, a sheet-like sound absorbing member made of glass wool or rock wool having the same density as the elastic member or lower density than the elastic member is disposed on the surface of the elastic member opposite to the face material. It is preferable.

  According to this configuration, the sound insulation of the face material can be further enhanced by the sound absorbing action of the low-density glass wool.

  In the vibration absorbing member, which is the vibration absorbing member disposed on the upper surface of the face material constituting the ceiling of the building, a main body fixed to the lower surface of the elastic member, and outward from both side end surfaces of the elastic member A locking sheet that includes an extending portion that extends, and is fixed to the extending portion in a state of being separated from the elastic member, and is locked to a locking portion provided on a support member for supporting the face material. A length of the extension of the locking sheet before the face material is attached to the support member and the locked portion is locked to the locking portion. It is preferable that the lower surface of the elastic member is set to a dimension positioned below the lower end of the support member.

  According to this configuration, the vibration absorbing member is temporarily fixed to the support member by locking each locked portion to the lock portion, and then the face material is attached to the support member, whereby the face material is supported by the support member. And mounting the vibration absorbing member on the surface of the face material can be performed simultaneously. Therefore, the vibration absorbing member can be easily arranged on the ceiling. Specifically, the space above the ceiling is often narrow, and it is difficult to dispose the vibration absorbing member on the upper surface of the face material after attaching the face material constituting the ceiling. In contrast, in this configuration, the vibration absorbing member can be attached to the support member while the vibration absorbing member is disposed on the surface member constituting the ceiling, and therefore the vibration absorbing member can be easily disposed on the upper surface of the ceiling. Can do.

  Moreover, since the locked portion is fixed to the extension portion of the locking sheet in a state of being separated from the elastic member, it is possible to suppress the movement of the elastic member from being restricted by the locked portion. The vibration can be properly propagated to the elastic member and the weight.

  In the above configuration, a main body fixed to the upper surface of the elastic member so as to overlap with the main body of the locking sheet in plan view, and extending outward from both side end surfaces of the elastic member to extend the locking sheet It is preferable to further include a second locking sheet including an extension portion that sandwiches the locked portion with the portion.

  According to this configuration, the locked portion and the elastic member are firmly connected by the locking sheet and the second locking sheet. Therefore, the elastic member can be stably supported by the support member in a state where the locked portion is locked to the locking portion.

  In the above configuration, the portion that penetrates the main body portion of the second locking sheet and is inserted into the elastic member, and the main body portion of the second locking sheet move in a direction away from the elastic member. It is preferable to further include a connecting member including a portion to be regulated.

  According to this configuration, it is possible to prevent the second locking sheet from being peeled off from the elastic member, and it is possible to further strengthen the connection between the locked portion and the elastic member via the second locking sheet. Therefore, in a state where the locked portion is locked to the locking portion, the elastic member can be more stably supported by the support member.

  Moreover, compared with the case where the elastic member and the second locking sheet are sandwiched and connected in the thickness direction, it is possible to suppress the movement of the elastic member, and the vibration of the face material is appropriately applied to the elastic member. It can be propagated.

  Moreover, this invention is a partition structure of the building provided with the vibration-absorbing member of Claim 1 or 2, Comprising: The partition structure of the building by which the said vibration-absorbing member is arrange | positioned on the surface of the said face material is provided. To do.

  According to this structure, the vibration absorbing member configured as described above is disposed on the surface of the face material, so that the building having the face material having high sound insulation and heat insulation performance relatively inexpensively as described above. A partition structure can be realized.

  Moreover, the said structure WHEREIN: It is preferable that the said face material is a member which comprises the ceiling of a building, and the said vibration absorption member is arrange | positioned at the upper surface of the said face material.

  According to this configuration, it is possible to suppress the propagation of noise from the upper floor to the lower floor.

  Moreover, this invention is the partition structure of the building of any one of Claims 3-5, The said vibration absorption member is arrange | positioned on the upper surface of the said face material which comprises the ceiling of a building, The partition of a building Provide structure.

  Also in this structure, the propagation of noise from the upper floor to the lower floor can be suppressed.

  In the above configuration, a plurality of members that extend along the first direction and are disposed on the surface of the face material in a posture separated from each other along a direction orthogonal to the first direction, and support the face material. It is preferable that the vibration absorbing member is disposed between the adjacent supporting members.

  According to this structure, the thickness of the member located on the surface of the face material can be reduced by disposing the vibration absorbing member between the support members.

  The said structure WHEREIN: It is preferable that the said vibration absorption member is arrange | positioned so that a clearance gap may be formed between the side end surface of the said elastic member, and the said both support members between the said adjacent support members.

  According to this configuration, the vibration of the vibration absorbing member can be suppressed from being regulated by the support member, and the vibration of the face material can be more appropriately absorbed by the vibration absorbing member.

  Further, the present invention is a method of installing the vibration absorbing member according to claim 1 or 2 on a surface of a face material that is supported by a plurality of support members arranged in a predetermined direction and constitutes a ceiling of a building, A tape transfer step of transferring a tape between the adjacent support members, and a temporary placement of placing the vibration absorbing member on the upper surface of the tape in a state where the plurality of weights are bonded to the upper surface of the elastic member A step of pushing up the face material from below the tape on which the vibration absorbing member is placed to a position where the face material contacts the support member from below, and lifting the vibration absorbing member by the face material And a ceiling construction method comprising a fixing step of fixing and supporting the face material on the support member.

  According to this method, the face material is pushed up from below the support member and fixed to the support member, thereby fixing the face material to the support member and between the support members of the surface of the face material. The vibration absorbing member on the part, that is, the installation of the plurality of weight main bodies can be performed simultaneously. Therefore, it is possible to reduce the work man-hours. In addition, since the vibration absorbing member can be temporarily placed on the top surface of the tape and closer to the ceiling portion, the vibration absorbing member can be more easily pushed up to the ceiling portion, and workability can be improved.

  Moreover, this invention installs the vibrational absorption member of any one of Claims 3-5 on the surface of the face material which is supported by the some support member arranged in a predetermined direction, and comprises the ceiling of a building. A method of preparing the vibration absorbing member; and locking one of the pair of locked portions to the locking portion provided on one of the two adjacent supporting members. A temporary fixing step of locking the vibration absorbing member to the support member by locking the other locked portion to the locking portion provided on the other support member; and the face material. Pushing up the vibration absorbing member from below the vibration absorbing member temporarily fixed to the supporting member to a position where the face member contacts the supporting member from below, and lifting the vibration absorbing member with the face material; , Fixing work for fixing the face material to the support member Comprising the door, including the installation method of the vibration absorbing member, characterized in that.

  Also by this method, by fixing the face material to the support member by pushing up the face material from below the vibration absorbing member temporarily fixed to the support member and fixing the face material to the support member, The vibration absorbing member, that is, the plurality of weight main bodies can be installed at the same time on the portion between the support members. Therefore, it is possible to reduce the work man-hours.

  Further, the vibration absorbing member can be stably supported by the support member by a simple operation of locking the fixed portion fixed to the locking sheet to the locking portion, and workability can be improved. .

  In particular, in this method, since it is not necessary to apply a tape between the support members in order to temporarily fix the vibration absorption member to the support member, the amount of work at the installation site of the vibration absorption member can be reduced.

  As described above, according to the present invention, it is possible to more effectively absorb the vibration of the face material and improve the workability during construction.

FIG. 1 is a schematic perspective view of a ceiling portion to which a building partition structure according to the present invention is applied as viewed from above. It is the schematic perspective view which looked at the ceiling part of the state which abbreviate | omitted the sound absorption member from upper direction. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is a figure of the state which expanded a part of Drawing 4, and removed the sound-absorbing member. (A)-(e) is a figure for demonstrating the construction method of a ceiling. It is a schematic perspective view of the vibration absorbing member according to the second embodiment. It is a schematic side view of the vibration absorbing member according to the second embodiment. It is a schematic perspective view of the state which removed the cover member from the vibration absorption member which concerns on 2nd Embodiment. It is a top view of the state which removed the lid member from the vibration absorption member concerning a 2nd embodiment. It is a side view of the state where a lid member was removed from a vibration absorption member concerning a 2nd embodiment. It is a bottom view of the state where a lid member was removed from a vibration absorption member concerning a 2nd embodiment. It is the figure which expanded a part of XIII-XIII sectional view taken on the line of FIG. It is the schematic perspective view which showed the securing member. (A)-(e) is a figure for demonstrating the construction method of the ceiling which concerns on 2nd Embodiment. It is the figure which showed the other example of the vibrational absorption member. It is the figure which showed the other example of application of the vibrational absorption member.

  Hereinafter, a partition structure of a building provided with a vibration absorbing member according to an embodiment of the present invention will be described based on the drawings.

(1) Ceiling structure Here, the case where the said partition structure is applied to the ceiling part is demonstrated.

  FIG. 1 is a schematic perspective view of a ceiling portion as viewed from above. FIG. 2 is a view in which illustration of a sound absorbing member 40 described later with respect to FIG. 1 is omitted. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

  As shown in FIGS. 1 and 2, the ceiling portion includes a ceiling board (face material) 10, a plurality of field edges (support members) 20, a plurality of vibration absorbing members 30, and a plurality of sound absorbing members 40. .

  The ceiling board 10 is a plate-like member extending in a substantially horizontal direction, and the lower surface of the ceiling board 10 forms a ceiling surface. The ceiling board 10 is made of a plaster board, for example.

  The field edge 20 is a member for supporting the ceiling board 10, that is, a support member. The field edge 20 is a member extending in one direction. In the present embodiment, the field edge 20 is a square bar. Each field edge 20 is fixed to a field edge receiver (not shown) fixed to a building beam (not shown) or the like in a posture separated from each other along a direction orthogonal to the longitudinal direction thereof. Hereinafter, as shown in FIG. 1 and the like, the longitudinal direction (first direction) of the field edge 20 is referred to as the front-rear direction, and the direction orthogonal thereto is referred to as the left-right direction. In the present embodiment, the field edges 20 are arranged at substantially equal intervals in the left-right direction.

  The ceiling board 10 is disposed so as to extend along the lower surface of the field edge 20, and each field edge 20 is disposed on the upper surface of the ceiling board 10. The ceiling board 10 is fixed to these field edges 20 with bolts or the like. The ceiling board 10 may be composed of a single board or a plurality of boards. When the ceiling board 10 is composed of a plurality of boards, these boards are individually fixed to the field edge 20.

  As shown in FIGS. 3 and 4, each vibration absorbing member 30 includes a single sheet-like elastic member 32 having an elastic force and a plurality of weights 34 fixed to the elastic member 32. .

  The elastic member 32 is placed on the upper surface of the ceiling board 10 in contact with the upper surface of the ceiling board 10, and extends along the upper surface of the ceiling board 10. In the present embodiment, the elastic member 32 is not fixed to the ceiling board 10 but is merely placed. In the present embodiment, the elastic member 32 is made of glass wool compressed into a sheet shape. Further, the elastic member 32 and the ceiling board 10 are not fixed, and the elastic member 32 and each vibration absorbing member 30 are merely placed on the upper surface of the ceiling board 10.

  In each vibration absorbing member 30, the plurality of weights 34 are fixed to the upper surface of the elastic member 32 at positions separated from each other, and are fixed to positions separated from the side end surfaces of the elastic member 32.

  In the present embodiment, the weight 34 is fixed to the upper surface of one elastic member 32 in a line in the front-rear direction. Further, only one row of weights 34 extending in the front-rear direction is provided for one elastic member 32. The weights 34 are arranged on the center line in the left-right direction of the elastic member 32.

  The weight 34 includes a weight main body 34 a having a specific gravity higher than that of the elastic member 32, and an adhesive layer 34 b that is interposed between the weight main body 34 a and the elastic member 32 to bond them. The adhesive layer 34b is formed on the entire surface of the weight body 34a on the elastic member 32 side. The adhesive layer 34b is formed by, for example, applying an adhesive on the surface of the weight main body 34a and then adhering it onto the elastic member 32.

  As described above, the weights 34 are fixed to the upper surface of the elastic member 32 so as to be separated from each other, and are fixed to positions separated from the side end surfaces of the elastic member 32, and the weight main bodies 34a are separated from each other. At the same time, it is fixed so as to be separated from the side end face of the elastic member 32. Similarly, the adhesive layers 34b are also arranged so as to be separated from each other and from the side end face of the elastic member 32.

  Here, the vibration absorbing member 30 having the elastic member 32 and the weight main body 34a having a high specific gravity as described above functions as a dynamic damper and absorbs vibration of the ceiling board 10. Specifically, each weight main body 34 a and a portion of the elastic member 32 around each weight main body 34 a function as a dynamic damper, and each weight main body 34 a vibrates with the vibration of the ceiling board 10. Then, the vibration of the ceiling board 10 is absorbed.

  However, in the vibration absorbing member 30, a plurality of weight main bodies 34 a are fixed to a common elastic member 32. Therefore, the weight main bodies 34a interfere with each other, and the vibration at the resonance frequency of the ceiling board 10 may not be properly propagated to each weight main body 34a.

  On the other hand, in this embodiment, the area | region of the elastic member 32 which can propagate appropriately the vibration of the resonant frequency of the ceiling board 10 is each independently allocated to each weight main body 34a.

  Specifically, the distance d1 between the weights 34 is a reference distance d_A that is set in advance as a distance d_A that can appropriately propagate the vibration of the resonance frequency of the ceiling board 10 to the weight 34 and the weight body 34a via the elastic member 32. It is set to more than twice the distance (predetermined distance). Further, the separation distances d2 and d3 between the side end surface of the elastic member 32 and the weight 34 closest thereto are set to be equal to or greater than the reference distance d_A (half or more of the predetermined distance). Specifically, the distance d2 between the left and right end surfaces 32e and 32e of the elastic member 32 and the weights 34 is set to be equal to or greater than the reference distance d_A, and the front and rear end surfaces 32f and 32f of the elastic member 32 and the front and rear end portions The separation distance d3 from the weight 34 positioned at is equal to or greater than the reference distance d_A. In the present embodiment, the separation distance d3 between the front and rear end faces 32f, 32f of the elastic member 32 and the weight 34 located at the front and rear end parts is set to be the same on the front end side and the rear end side.

  In this way, in the present embodiment, at least the regions of the elastic member 32 that are surrounded by lines that are separated from the weight 34 by the reference distance d_A in the front, rear, left, and right directions are assigned to the weights 34, respectively.

  In the present embodiment, the vibration absorbing member 30 suppresses the propagation of the so-called heavy floor impact sound that occurs when the child runs around or jumps, that is, the low frequency of the ceiling board 10 that generates this heavy floor impact sound. In order to absorb the vibration by the vibration absorbing member 30, the reference distance d_A and the like are set so that the natural frequency of the vibration absorbing member 30 becomes a low frequency.

Specifically, the natural frequency of the vibration absorbing member 30 is set to the 63 Hz band. In order to realize this, the density of the elastic member 32 is set to 60 kg / m ³ or more (for example, 85 kg / m ³ ), the front-rear dimension is 1000 mm, the left-right dimension is 200 mm, and the thickness dimension. Seven weight bodies 34a having a weight of 250 g are fixed to the elastic member 32 having a (vertical dimension) of about 12 mm. Further, the weight body 34a is made of steel or iron, has a rectangular parallelepiped shape with a front-rear dimension and a left-right dimension of about 50 mm and a height dimension of about 12 mm, and a reference distance d_A of 30 mm. Is set. The distance d1 between the weights 34 is 70 mm, the distance d2 between the left and right end faces 32e, 32e of the elastic member 32 and the weight 34 is 75 mm, and the front and rear end faces 32f, 32f of the elastic member 32 and the front and rear ends. The distance d3 from the weight 34 located in the section is 115 mm.

  As shown in FIG. 3, one vibration absorbing member 30 is disposed between the adjacent field edges 20 in the left-right direction. The dimension in the left-right direction of the elastic member 32 and the vibration absorbing member 30 is set to a value smaller than the separation distance between the adjacent field edges 20, and between the left and right edges of the vibration absorbing member 30 and the field edge 20. Are each formed with a gap G.

On the other hand, as shown in FIGS. 2 and 4, in the front-rear direction, a plurality of vibration absorbing members 30 are juxtaposed at a portion between adjacent field edges 20. In the illustrated example, the vibration absorbing members 30 adjacent in the front-rear direction are arranged in contact with each other. In the present embodiment, the vibration absorbing member 30 is disposed on the entire portion between the field edges 20, that is, almost the entire portion of the upper surface of the ceiling board 10 excluding the field edge 20 and the gap G.

The sound absorbing member 40 is a sheet-like member made of glass wool having a density lower than that of the elastic member 32, and is mainly a light floor impact sound, that is, a mid-high frequency generated when an object is dropped or a chair is dragged. It is provided to absorb vibrations. For example, the density of the glass wool constituting the sound absorbing member 40 is set to 10 kg / m ³ or 24 kg / m ³ . In the present embodiment, the thickness of the sound absorbing member 40 is set to about 50 mm.

  Each sound absorbing member 40 is placed on the upper surface of each elastic member 32 in the portion between the field edges 20, and the elastic member 32 and the elastic member 32 in a state where the weight 34 is sandwiched between the elastic member 32 in the vertical direction. Almost the entire vibration absorbing member 30 is covered from above. The dimensions of one sound absorbing member 40 in the left-right direction and the front-rear direction are set to be substantially the same as those of one elastic member 32, and one sound absorbing member 40 and one elastic member 32 are substantially in plan view. The whole overlaps each other. The sound absorbing member 40 is fixed to the vibration absorbing member 30 by being joined to the upper surface of the weight 34 via an adhesive or the like.

  In the present embodiment, as shown in FIG. 3, in the state where the sound absorbing member 40 is placed on the upper surface of the elastic member 32, the upper surface of the sound absorbing member 40 and the upper surface of the field edge 20 are substantially at the same height position. It has become.

  The sound absorbing members 40 are placed on the upper surfaces of all the elastic members 32, and as shown in FIG. 1, all the portions between the field edges 20, that is, the field edges 20 and the above-mentioned in the upper surface of the ceiling board 10 are arranged. The sound absorbing member 40 is spread over almost the entire portion excluding the gap G (the gap G between the field edge 20 and the elastic member 32).

(2) Ceiling part construction method Next, a method for constructing the ceiling part configured as described above, that is, a method for installing the vibration absorbing member 30 on the ceiling will be described with reference to FIGS. I will explain. 6A to 6E are diagrams corresponding to FIG. 3, and time elapses in the order of (a) to (e).

  First, as shown in FIG. 6A, the tape 50 is bridged between the adjacent field edges 20 (tape passing step). Specifically, both end portions of the tape 50 are fixed to the upper surfaces of the field edges 20 so that the tape 50 hangs down between the adjacent field edges 20.

  The tape 50 may be any tape as long as it can support the vibration absorbing member 30 on which the sound absorbing member 40 is placed, as will be described later. For example, as the tape 50, a tape made of a polyethylene sheet is used. As the tape 50, a tape having a thickness of about 0.13 mm and a width of about 50 mm is used.

  In addition, when using the tape 50 with a comparatively small width | variety, in order to support the vibration-absorbing member 30 stably, the some tape 50 is routed in the position mutually spaced apart about the front-back direction.

  Next, as shown in FIG. 6B, the vibration absorbing member 30 is placed on the upper surface of the tape 50 (temporary placing step).

  In this embodiment, the sound absorbing member 40 is bonded to the vibration absorbing member 30 before this step. In this step, the vibration absorbing member 30 to which the sound absorbing member 40 is bonded is placed on the upper surface of the tape 50. .

  Next, as shown in FIG. 6C, the ceiling board 10 is pressed against the tape 50 and the vibration absorbing member 30 from below. Then, as shown in FIG. 6 (d), the ceiling board 10 is pushed up in a state where these are placed on the upper surface of the ceiling board 10, and the ceiling board 10 is connected to the field edge as shown in FIG. 6 (e). It is made to contact | abut to this from the downward direction of 20 (surface material pushing-up process).

  Thereafter, the ceiling board 10 is fixed to the field edge 20 in the state shown in FIG.

  Thus, in this embodiment, after the ceiling board 10 is fixed to the field edge 20, the vibration absorbing member 30 is not installed on the upper surface of the ceiling board 10, but the vibration absorbing member 30 is installed on the ceiling board 10. Then, set the ceiling board 10 to the field edge 20 and fix it.

  The tape 50 may be removed thereafter or may be fixed to the field edge 20 as it is. When the tape 50 is left as it is, the tape 50 is interposed between a part of the vibration absorbing member 30 and the ceiling board 10, but in this specification, the tape 50 is partially included in this way. The intervening case is included in the contact between the vibration absorbing member 30 and the ceiling board 10.

(3) 2nd Embodiment Next, the construction method of the vibration absorption member 130 which concerns on 2nd Embodiment of this invention, and the ceiling part which concerns on 2nd Embodiment is demonstrated.

  FIG. 7 is a schematic perspective view of the vibration absorbing member 130 according to the second embodiment. FIG. 8 is a schematic side view of the vibration absorbing member 130. FIG. 9 is a schematic perspective view of the vibration absorbing member 130 with the lid member 160 removed. 10, FIG. 11, and FIG. 12 are a top view, a side view, and a bottom view corresponding to FIG. In FIG. 11 and the like, the thickness of the locking sheet 210, the thickness of the second locking sheet 220, and the thickness of the locked portion 230, which will be described later, are exaggerated and enlarged so that the structure becomes clear. Yes. Hereinafter, the front-rear direction and the left-right direction shown in FIG. 7 are simply referred to as the front-rear direction and the left-right direction, respectively.

  Similarly to the vibration absorbing member 30 according to the first embodiment, the vibration absorbing member 130 according to the second embodiment includes an elastic member 32 having elastic force formed by compressing glass wool into a sheet shape, and an elastic member 32. A plurality of fixed weights 34 and a sheet-like sound absorbing member 40 made of glass wool having a density lower than that of the elastic member 32 are provided. Also in the second embodiment, the weight 34 includes a weight body 34a having a specific gravity higher than that of the elastic member 32, and an adhesive layer 34b that is interposed between the weight body 34a and the elastic member 32 to bond them.

  On the upper surface of one elastic member 32, two rows of two weights 34 arranged in the front-rear direction are provided on the left and right, and a total of four weights 34 are disposed on one elastic member 32.

  In the second embodiment, unlike the first embodiment, the sound absorbing member 40 is not disposed above the weight 34 and is disposed on the upper surface of the portion of the elastic member 32 where the weight 34 is not disposed. .

  Specifically, the sound absorbing member 40 is formed with four weight receiving holes 41 penetrating the front and back surfaces thereof. The sound absorbing member 40 is disposed on the upper surface of the elastic member 32 in a state in which the weights 34 are housed one by one in the weight housing holes 41. The size of the weight accommodation hole 41 is slightly larger than the weight 34 in plan view, and the sound absorbing member 40 is disposed on the entire upper surface of the elastic member 32 where the weight 34 is not disposed.

  In the second embodiment, a sheet-like upper lid member 150 having a thickness sufficiently smaller than that of the sound absorbing member 40 is fixed to the upper surface of the sound absorbing member 40 (the surface facing the opposite side of the elastic member 32). The upper lid member 150 has the same shape as the outer shape of the sound absorbing member 40 and the elastic member 32 in plan view, closes each weight accommodation hole 41, and covers each weight 34 from above.

  The upper lid member 150 is made of, for example, paper, and is bonded to the upper surface of the sound absorbing member 40 with an adhesive. A plurality of through holes 151 are formed in a portion of the upper lid member 150 that closes each of the weight accommodation holes 41, and a sound absorbing action is generated by the through holes 151 and the weight accommodation holes 41 of the upper lid member 150. Yes. Note that a plurality of through holes 151 may be formed in the entire upper lid member 150 at specific intervals.

  Thus, in the second embodiment, the sound absorbing member 40 and the upper lid member 150 constitute a lid member 160 that covers each weight 34 from the opposite side of the elastic member 32. Note that, in FIG. 10, the lid member 160 is shown in a state where the surface that comes into contact with the upper surface of the elastic member 32 faces upward when being fixed to the elastic member 32.

  In the second embodiment, the lid member 160 is fixed to the elastic member 32 by bonding the lower surface of the sound absorbing member 40 to the upper surface of the elastic member 32 with an adhesive.

  In detail, the adhesive is applied along the line L indicated by the broken line in FIG. 10 and surrounding each weight 34, and the elastic member 32 and the sound absorbing member 40 are separated by the adhesive. It is glued. Part of the adhesive is applied to the upper surface of a second locking sheet 220 described later, and the elastic member 32 and the lid member 160 are partially bonded to each other via the second locking sheet 220. Has been.

  Here, the separation distance (the shortest distance among the separation distances) d_L between each side end surface of each weight 34 and the line L is set to be equal to or more than the reference distance d_A. For example, the separation distance d_L is substantially the same length as the reference distance d_A. In the second embodiment, the distance d1 between the weights 34 is longer than the distance twice the reference distance d_A, and the distance between the side end surface of the elastic member 32 and the weight 34 closest to the distance is provided. d2 and d3 are longer than the reference distance d_A. In the present embodiment, the distance d_L between each side end surface of each weight 34 and the line L is set to be the same for all weights 34.

  The connection structure between the elastic member 32 and the sound absorbing member 40 is not limited to this, and the side surface of the elastic member 32 and the side surface of the sound absorbing member 40 may be fixed with a tape or the like.

  Unlike the first embodiment, the vibration absorbing member 130 according to the second embodiment includes a locking sheet 210, a second locking sheet 220, and a locked portion 230.

  The locked portion 230 is locked to a locking portion 313 provided on the field edge 20. The locked portion 230 is, for example, a plate-shaped member having a substantially rectangular shape made of plastic.

  In the second embodiment, one vibration absorbing member 130 includes four locked portions 230.

  The locking sheet 210 and the second locking sheet 220 are sheet-like members. In the second embodiment, as these sheets 210 and 220, tapes in which an adhesive is applied to one surface of a base material and one surface is an adhesive surface are used.

  The thickness of these sheets 210 and 220 is set to be smaller than the thickness of the locked portion 230. That is, the thickness of the locked portion 230 is set to be relatively large and the rigidity thereof is secured, while the thickness of the sheets 210 and 220 is smaller than that of the locked portion 230, and the sheets 210 and 220 are soft and easily deformed. It is configured.

  For example, the thickness (the dimension in the height direction) of the elastic member 32 is about 12 mm, the thickness of the locked portion 230 is about 0.5 mm, and the thickness of each of the sheets 210 and 220 is about 0.2 mm. .

  In the second embodiment, one vibration absorbing member 130 includes two locking sheets 210 and two second locking sheets 220.

  The locking sheet 210 is disposed so that the adhesive surface thereof is in contact with the lower surface of the elastic member 32, and is bonded to the lower surface of the elastic member 32. The two locking sheets 210 are arranged on both sides in the left-right direction of the region R (see FIG. 12) where the weight 34 is arranged in a plan view, and the two locking sheets 210 and the weight in a plan view. 34 is not overlapped. In the second embodiment, the two locking sheets 210 extend in the front-rear direction along the left and right edges of the elastic member 32.

  Each locking sheet 210 includes a main body portion 210a that is bonded to the lower surface of the elastic member 32 and an extension portion 210b that extends outward from both side end surfaces of the elastic member 32 in the front-rear direction. That is, both end portions of the two locking sheets 210 are bonded to the elastic member 32 in a state of protruding outward from both end surfaces in the front-rear direction of the elastic member 32. Each locking sheet 210 is bonded to the lower surface of the elastic member 32 over the entire portion that overlaps the elastic member 32 in plan view, that is, the entire front-rear direction of the lower surface of the elastic member 32.

  One locked portion 230 is bonded to each end portion of the locking sheet 210, that is, the upper surface of the extension portion 210b. The locked portion 230 is bonded to the upper surface of the extension portion 210 b of the locking sheet 210 in a state of being separated from both end surfaces in the front-rear direction of the elastic member 32.

  The second locking sheet 220 is disposed so that its adhesive surface and the upper surface of the elastic member 32 are in contact with each other, and is bonded to the upper surface of the elastic member 32. The two second locking sheets 220 are arranged so as to overlap the two locking sheets 210 in plan view. That is, the two second locking sheets 220 are arranged on both sides in the left-right direction of the region R where the weight 34 is arranged in a plan view, and the two second locking sheets 220 and the weight 34 are Are not overlapped in plan view.

  The second locking sheet 220 also includes a main body portion 220 a that is bonded to the upper surface of the elastic member 32, and extension portions 220 b that extend outward from both front and rear side surfaces of the elastic member 32. Each second locking sheet 220 is also bonded to the upper surface over the entire front-rear direction of the upper surface of the elastic member 32.

  In the second embodiment, the second locking sheet 220 is a portion between the main body 220a and the extension 220b, in addition to the main body 220a and the extension 220b. It has a part adhere | attached on the both-ends end surface.

  One locked portion 230 is bonded to each of both end portions of the second locking sheet 220, that is, the lower surface of the extended portion 220b. That is, the extension part 220 b of the second locking sheet 220 is bonded to the upper surface of the locked part 230 in a state where the locked part 230 is sandwiched between the extension part 210 b of the locking sheet 210. The locked portion 230 is bonded to the extension portion 220b of the second locking sheet 220 in a state of being separated from both end surfaces of the elastic member 32 in the front-rear direction. The extension portion 220b of the second locking sheet 220 and the extension portion 210b of the locking sheet 210 are directly bonded to each other in the region from the locked portion 230 to the front and rear side surfaces of the elastic member 32. .

  The length of the extension part 220b of the second locking sheet 220 and the extension part 210b of the locking sheet 210 are the same in the front-rear direction.

  The lengths of the extension portions 220b and 210b in the front-rear direction are the bottom surfaces of the elastic member 32 before the ceiling board 10 is attached to the field edge 20 and the locked portion 230 is locked to the locking portion 313. Is set to a dimension located below the lower end of the field edge 20.

  The second locking sheet 220 is further connected to the elastic member 32 via the connecting member 301. 13 is an enlarged view of a part of a cross-sectional view taken along line XIII-XIII in FIG. The connecting member 301 passes through the second locking sheet 220 and is inserted into the elastic member 32, and the second locking sheet is positioned above (outside) the second locking sheet 220. And a pressing portion 301b that restricts the movement of 220 in the upward direction, that is, in the direction away from the elastic member 32. In the example illustrated in FIG. 13, the connecting member 301 includes two rod-like insertion portions 301 a that extend in parallel to each other, and a pressing portion 301 b that connects the base end portions of the insertion portions 301 a. The connecting member 301 is inserted into the second locking sheet 220 and the elastic member 32 from above the second locking sheet 220 with the tip of the insertion portion 301a facing downward, so that the connecting member 301 is connected to the elastic member 32 and the second locking sheet 220a. The locking sheet 220 is connected. Here, the pressing portion 301b restricts the second locking sheet 220 from moving upward as described above, and prevents the second locking sheet 220 from moving along the upper surface of the elastic member 32. regulate. That is, the pressing portion 301b and thus the connecting member 301 restricts the movement of the second locking sheet 220 in the pulling direction and the shearing direction.

  The connecting member 301 is attached to the vicinity of both edges in the front-rear direction of the elastic member 32 in the portion where the second locking sheet 220 and the elastic member 32 are bonded. Further, each connecting member 301 is attached to a position closer to the center in the left-right direction (a position closer to the center in the left-right direction of the elastic member 32 than the center in the left-right direction of each sheet 210, 220) in this bonding portion. Yes.

  Further, in the portion between the elastic member 32 and the locked portion 230, the extension portion 210b of the locking sheet 210 and the extension portion 220b of the second locking sheet 220 are connected by being bonded to each other. In addition, the auxiliary connecting member 302 is also connected. The auxiliary connecting member 302 connects the extension part 210b of the locking sheet 210 and the extension part 220b of the second locking sheet 220 by sandwiching them in a direction close to each other. The auxiliary connecting member 302 uses, for example, a member having two rod-shaped portions extending in parallel to each other and a portion connecting the base end portions of these portions, and the rod-shaped portion is inserted into the extension portions 210b and 220b. It is formed by bending the tip side portion protruding from 210b, 220b along the extension. In the example of FIG. 12 and the like, the auxiliary connecting member 302 is located at a position closer to the center in the left-right direction (the respective sheets 210, 220) of the extension part 220b of the second locking sheet 220 and the extension part 210b of the locking sheet 210. The elastic member 32 is attached at a position closer to the center in the left-right direction than the center in the left-right direction.

  Further, in the example of FIG. 12 and the like, the auxiliary connecting member 302 is also attached to the bonded portion of the extension portion 220b of the second locking sheet 220, the extension portion 210b of the locking sheet 210, and the locked portion 230. These are connected by an auxiliary connecting member 302.

  As described above, in the second embodiment, the locked portion 230 is separated from the elastic member 32 at the four corners of the elastic member 32 via the second locking sheet 220 and the locking sheet 210. It is connected.

  A through-hole 232 penetrating the front and back of each portion is formed in a portion where the locked portion 230, the second locking sheet 220 (extension portion 220b), and the locking sheet 210 (extension portion 210b) overlap. Is formed. The through hole 232 is a hole through which a locking portion 313 described later is inserted.

  Next, a method of installing the vibration absorbing member 130 configured as described above on the ceiling portion and constructing the ceiling portion, which is different from the method described in the above (2) (hereinafter referred to as a second method as appropriate). The construction method according to the embodiment will be described with reference to FIGS. 14 and 15 (a) to 15 (d). In FIGS. 15A to 15D, time elapses in the order of (a) to (d). FIG. 14 is a schematic perspective view showing a locking member 310 used in the second embodiment.

  In the construction method according to the second embodiment, first, the locking member 310 is attached to the field edge 20 (locking member installation step).

  The locking member 310 is for locking the locked portion 230 and temporarily fixing the vibration absorbing member 130 to the field edge 20. As shown in FIG. 14, the locking member 310 includes a substrate 311 extending in a predetermined direction, an extending portion 312 extending downward from both edges of the substrate 311, and obliquely upward from the lower edge of each extending portion 312. And a locking projection (locking portion) 313 extending in the direction.

  The locking member 310 is attached to the field edge 20 by placing the substrate 311 on the upper surface of the field edge 20 in a state in which the extended portions 312 are along both side surfaces of the field edge 20 in the width direction. Thereby, the latching | locking part 313 is arrange | positioned so that it may extend diagonally upward from the both sides | surfaces of the field edge 20. FIG. In the locking member installation step, the plurality of locking members 310 are attached to the field edge 20 so as to be separated from each other in the longitudinal direction of the field edge 20.

  The specific configuration of the locking member is not limited to this, and for example, a screw may be used as the locking member, and the screw may be fixed to the field edge 20 so as to protrude upward.

  Next, the vibration absorbing member 130 according to the second embodiment is prepared (preparation step).

  Next, the vibration absorbing member 130 is temporarily fixed to the edge 20 (temporary fixing step).

  In the temporary fixing step, as shown in FIGS. 15A and 15B, the locking portion 313 is inserted into the through hole 232 of the locked portion 230 and the locked portion 230 is locked to the locking portion 313. . At this time, each of the locked portions 230 is locked to the locking portion 313 so that each of the sheets 210 and 220 extends between two adjacent field edges 20. That is, as shown in FIG. 15B and the like, after the temporary fixing process, the sheets 210 and 220 are in a posture extending in a direction orthogonal to the longitudinal direction of the field edge 20.

  In the second embodiment, the vibration absorbing member 130 is provided with four locked portions 230, all of which are locked to the locking portion 313. The order in which the four locked portions 230 are locked to the locking portion 313 is not particularly limited. For example, as shown in FIG. Are respectively locked to the locking portions 313, and then the two locked portions 230 on the rear side are locked to the locking portions 313 as shown in FIG.

  In this manner, in the second embodiment, the vibration absorbing member 130 is stably temporarily fixed at a position close to the field edge 20 by the engagement between the locked portion 230 and the locking portion 313.

  As described above, the lengths of the extending portions 210b and 220b in the front-rear direction of the respective sheets 210 and 220 to which the locked portion 230 is fixed are before being attached to the ceiling board 10 edge 20 and the locked portions, respectively. The dimension is set such that the lower surface of the elastic member 32 is positioned below the lower end of the field edge 20 in a state where 230 is locked to the locking portion 313. Therefore, as shown in FIG. 15B, after the temporary fixing step, the elastic member 32 is temporarily fixed at a position where the lower surface is below the lower end of the field edge 20.

  Next, as shown in FIG. 15C, the ceiling board 10 is pressed against the vibration absorbing member 130 from below. Then, the ceiling board 10 is pushed up with these placed on the upper surface of the ceiling board 10, and the ceiling board 10 is brought into contact with this from below the field edge 20 as shown in FIG. Face material lifting process).

  Here, as described above, the locked portion 230 is locked to the through hole 232 only when the locking portion 313 is inserted from below, and the locked portion 230 is locked to the locking portion 313. Can be easily moved upward. That is, the vibration absorbing member 130 is locked to the field edge 20 so as to be easily movable upward. Therefore, in the face material pushing-up process, the vibration absorbing member 30 can be pushed up easily by the ceiling board 10. Then, by being pushed up by the ceiling board 10, the vibration absorbing member 30 is supported by the ceiling board 10 from the state where it is supported by the engaging edge 313 on the field edge 20.

  Further, as described above, the locked portion 230 is separated from the elastic member 32, and the locked portion 230 and the elastic member 32 are connected by the sheets 210 and 220 that are relatively easy to deform. Therefore, even when the locked portion 230 is caught by the locking portion 313 and the upward movement of the locked portion 230 is restricted during the face material lifting process, the locked portion 230 and the elastic member The elastic members 32 can be easily pushed upward by the deformation of the sheets 210 and 220 between them.

  Thereafter, the ceiling board 10 is fixed to the field edge 20 in the state shown in FIG.

  As described above, also in the construction method according to the second embodiment, the vibration absorbing member 30 is not installed on the upper surface of the ceiling board 10 after the ceiling board 10 is fixed to the field edge 20, but the vibration absorbing member is attached to the ceiling board 10. The ceiling board 10 is set and fixed to the field edge 20 while installing 30.

  In the second embodiment, the vibration absorbing member 130 is placed on the ceiling board 10 in a state where the elastic member 32 and the ceiling board 10 are in contact with each other. In the second embodiment as well, the vibration absorbing member 130 is placed on the ceiling board 10 such that a gap G is formed between the vibration absorbing member 130 and the left and right edges of the field edge 20.

  Here, the sheets 210 and 220 are interposed between a part of the elastic member 32 and the ceiling board 10. However, as described above, the sheets 210 and 220 are very thin and can be easily deformed. The other parts are in close contact with the ceiling board 10. Therefore, the vibration of the ceiling board 10 is properly propagated to the elastic member 32.

(4) Operation, etc. As described above, in the ceiling structure of the present embodiment, the elastic member 32 and the ceiling board 10 are in contact (including the state in which the tape 50 or the sheets 210 and 220 are interposed in part). The vibration absorbing members 30 and 130 are provided on the ceiling board 10. Therefore, the vibration of the ceiling board 10 can be more directly propagated from the elastic member 32 to the weight body 34a, and the vibration of the ceiling board 10 can be effectively absorbed by each weight body 34a. Therefore, the sound insulation of the ceiling part can be enhanced. In particular, in the present embodiment, as described above, the vibration absorbing members 30 and 130 can appropriately absorb the low-frequency vibration of the ceiling board 10 and the heavy floor impact sound.

  In addition, since the plurality of weights 34 are fixed to the common elastic member 32, the plurality of weights 34 can be installed at a time by installing the vibration absorbing members 30 and 130 on the upper surface of the ceiling board 10. . Therefore, the working time can be shortened and workability can be improved as compared with the case where a plurality of weights 34 and elastic members 32 for fixing the weights 34 are individually provided and installed.

  In addition, in this structure, the distance d1 between the plurality of weight main bodies 34a is set to be twice or more the reference distance d_A set as described above, and the side end surfaces 32e, 32e, 32f, 32f of the elastic member 32 and The distances d2 and d3 from the weight body 34a closest to this are set to be equal to or greater than the reference distance d_A, and at least the vibrations of the resonance frequency of the ceiling board 10 are propagated from the weight bodies 34a to the weight body 34a. A region connecting points separated by a necessary distance d_A is independently assigned to each weight body 34a. That is, the region where the resonance of the ceiling board 10 can be propagated to the weight main body 34a is independently assigned to each weight main body 34a. Therefore, interference between the weight main bodies 34a can be prevented, and the resonance of the ceiling board 10 can be appropriately absorbed by each weight main body 34a. Further, since the adhesive layer 34b is also arranged in the same manner as the weight main body 34a, it is possible to prevent the weight main bodies 34a from interfering with each other via the adhesive layer 34b. Therefore, the sound insulation can be more reliably improved.

  In the present embodiment, a gap G is formed between the vibration absorbing members 30 and 130 and the left and right edges of the field edge 20. Therefore, it is possible to prevent the vibration absorbing members 30 and 130 and the field edge 20 from contacting each other when the vibration absorbing members 30 and 130 vibrate. That is, it is possible to prevent the field edge 20 from regulating the vibration of the vibration absorbing members 30 and 130. Therefore, it is possible to appropriately vibrate the vibration absorbing members 30 and 130 and thereby more appropriately absorb the vibration of the ceiling board 10.

  In the present embodiment, the elastic member 32 is made of glass wool. Therefore, as described above, the elastic member 32 can function as a heat insulating material while functioning as an elastic body of a dynamic damper, and in addition to improving sound insulation, the heat insulating performance of the ceiling portion can be enhanced. Further, since glass wool is relatively inexpensive, using it is advantageous in terms of cost.

  In the present embodiment, the sound absorbing member 40 is further placed on the upper surfaces of the elastic members 32 and 132. Therefore, the sound absorbing member 40 can also absorb noise and can further enhance the sound insulation of the ceiling portion. In particular, as described above, it is configured to absorb the heavy floor impact sound by the vibration absorbing members 30 and 130 and to absorb the light floor impact sound by the sound absorbing member 40, so that high sound insulation can be realized. .

  In the vibration absorbing member 130 according to the second embodiment, the locked portion 230 is coupled to the elastic member 32 via the locking sheet 210 and the second locking sheet 220. Therefore, by locking the locked portion 230 to the locking portion 313 provided on the field edge 20, the vibration absorbing member 130 can be temporarily fixed near the field edge 20 easily and stably. The vibration absorbing member 130 can be easily installed on the surface of the ceiling board 10.

  Moreover, the locked portion 230 is coupled to the elastic member 32 in a state of being separated from the elastic member 32. Therefore, in a state where the elastic member 32 is placed on the upper surface of the ceiling board 10, it is possible to suppress the movement of the elastic member 32 from being restricted by the locking portion 313. Therefore, the vibration of the ceiling board 10 can be appropriately propagated to the elastic member 32, and the vibration can be appropriately absorbed by the elastic member 32 and the weight 34 placed on the elastic member 32. That is, even when the locked portion 230 and the locking portion 313 are engaged, the sheets 210 and 220 positioned between the locked portion 230 and the elastic member 32 are deformed and displaced. Thus, the elastic member 32 can be freely displaced by receiving the vibration of the ceiling board 10, and the vibration of the ceiling board 10 is appropriately transmitted to the elastic member 32.

  In the second embodiment, both end portions of the respective sheets 210 and 220 are fixed to the elastic member 32 so as to extend outward from both side end surfaces in the front-rear direction of the elastic member 32, and each sheet 210 is fixed to the elastic member 32. It extends continuously over the entire longitudinal direction. Therefore, when the locked portions 230 provided at both end portions of the respective sheets 210 and 220 are locked to the locking portions 313, the locking sheets 210 are arranged so as to extend between the adjacent field edges 20. The elastic member 32 can be stably supported by the locking sheet 210. Further, a large bonding area between the elastic member 32 and each of the sheets 210 and 220 can be secured, and the respective sheets 210 and 220 and the elastic member 32 can be more firmly fixed.

  In particular, in the second embodiment, the elastic member 32 and the locked portion 230 are connected by the second locking sheet 220 in addition to the locking sheet 210. Therefore, the elastic member 32 and the locked part 230 can be connected more firmly. Therefore, the elastic member 32 can be more stably locked to the locking portion 313 and the field edge 20. For example, if the connection between the elastic member 32 and the locked portion 230 is released when the vibration absorbing member 130 is temporarily fixed to the field edge 20, the elastic member 32 may fall from the field edge 20. Can be prevented.

  In the second embodiment, the second locking sheet 220 is disposed on both sides of the upper surface of the elastic member 32 in the front-rear direction of the region R on which the weight 34 is placed. Therefore, the second locking sheet 220 is fixed to the upper surface of the elastic member 32 to strengthen the connection between the elastic member 32 and the locked portion 230, and the second tape 220 is processed so as not to restrict the movement of the weight 34. It is possible to prevent the movement of the weight 34 from being restricted by the second locking sheet 220 and to allow the weight 34 to appropriately absorb vibrations without giving any special effort to fixing the second locking sheet 220. it can. For example, if the portion of the second tape 220 that contacts the weight 34 is changed to a member that can be displaced integrally with the weight 34, or if the second tape 220 is disposed so as to be spaced upward from the weight 34, the second tape Although it is possible to arrange the second tape 220 so as to pass above the weight 34 while suppressing the movement of the weight 34 by the 220, the second locking sheet is easier than these cases. The second locking sheet 220 can be arranged while preventing interference between the 220 and the weight 34.

  In the second embodiment, tapes having an adhesive surface are used as the sheets 210 and 220, and the sheets 210 and 220 are bonded to the elastic member 32 and the locked portion 230. And the elastic member 32 can be easily connected.

  In the second embodiment, the respective sheets 210 and 220 and the elastic member 32 are bonded, and the second locking sheet 220 and the elastic member 32 are further fixed by the connecting member 301. Therefore, the second locking sheet 220 can be more firmly fixed to the elastic member 32, and the coupling force between the elastic member 32 and the locked portion can be increased via the second locking sheet 220. . Therefore, the elastic member 32 can be more stably locked to the locking portion 313 and the field edge 20.

  Here, as a configuration for fixing the elastic member 32 and the second locking sheet 220 more firmly, a configuration in which these members are sandwiched from above and below can be considered. However, in this configuration, the vertical movement of the elastic member 32 is restricted, and the vibration of the ceiling board 10 may not be properly propagated to the elastic member 32. It is also conceivable to fix the locking sheet 210 and the elastic member 32 with the connecting member 301 in order to increase the connecting force between the elastic member 32 and the locked portion 230. However, in this configuration, the connecting member 301 (specifically, the pressing portion 301b of the connecting member 301) is interposed between the elastic member 32 and the ceiling board 10, and the vibration of the ceiling board 10 is caused in the elastic member 32. May not be properly propagated. Therefore, as described above, the connecting member 301 is preferably attached only to the second locking sheet 220 and not to the locking sheet 210.

  In the second embodiment, the sheets 210 and 220 are fixed to each other by the auxiliary connecting member 302 at a portion where the sheets 210 and 220 are directly bonded to each other. Therefore, it can suppress that one sheet | seat peels from the to-be-latched part 230 and elastic member 32 to which the other sheet | seat and this other sheet | seat were fixed, and the connection force of the elastic member 32 and to-be-latched part. Can be further enhanced. In addition, since the sheets 210 and 220 and the locked portion 230 are fixed by the auxiliary connecting member 302, the coupling force between the sheets 210 and 220 and the locked portion 230 is enhanced. The connection force between the elastic member 32 and the locked portion can be increased. Therefore, the elastic member 32 can be more stably locked to the locking portion 313 and the field edge 20.

  In the second embodiment, a common through hole 232 is formed in each of the sheets 210 and 220 and the locked portion 230, and the locking portion 313 is inserted into the through hole 232. . Therefore, the vibration absorbing member 130 can be temporarily fixed to the field edge 20 by a simple procedure of inserting the locking portion 313 into the through hole 232. Further, since the sheets 210 and 220 can be directly locked to the locking portion 313, even if the sheets 210 and 220 are peeled off from the locked portion 230, the elastic members are used by the sheets 210 and 220. 32 and the engaging part 313 can be maintained in engagement.

  In the second embodiment, the sheets 210 and 220 are fixed to the elastic members 32 so as to extend along the left and right edges of the elastic members 32, and the locked portions 230 are provided at the four corners of the elastic members 32. ing. Therefore, in a state where these four locked portions 230 are locked to the locking portion 313, the vibration absorbing member 130 can be temporarily fixed to the locking portion 313 and the field edge 20 stably.

  In the construction method according to the first embodiment, as described above, the tape 50 is passed between the field edges 20, and the vibration absorbing member 30 on which the sound absorbing member 40 is placed is placed on the tape 50. The ceiling board 10 is installed on the field edge 20 while being pushed up. That is, the ceiling board 10 and the vibration absorbing member 30 and thus the plurality of weights 34 and the sound absorbing member 40 are simultaneously installed on the ceiling portion. Therefore, compared with the case where these are installed separately, the work time of installation work can be shortened. In addition, after the ceiling board 10 is fixed to the field edge 20, the installation work time can be shortened as compared with the case where the vibration absorbing member 30 is installed on the upper surface of the ceiling board 10. In addition, the work above the field edge 20, that is, the work behind the ceiling can be omitted or the work time can be shortened. Therefore, workability can be improved. In addition, since the work behind the ceiling can be omitted in this way, for example, even when a worker cannot enter the back of the ceiling when renovating a building or the like, the vibration absorbing member 30 and the sound absorbing member 40 are used. Can be installed and replaced with a ceiling with high sound insulation.

  In the construction method according to the second embodiment, after the vibration absorbing member 130 is temporarily fixed to the locking portion 313 and the field edge 20, the ceiling board 10 is installed on the field edge 20 while pushing it up. Therefore, the work time of the installation work can be shortened and workability can be improved.

  In particular, in the second embodiment, the vibration absorbing member 130 can be temporarily fixed to the field edge 20 stably by the engagement between the locked portion 230 and the locking portion 313, and the ceiling board 10 can be pushed thereafter. The workability of the lifting work can be improved.

  Further, in the construction method according to the first embodiment (the method described in (2)), a plurality of tapes 50 are spanned between a plurality of field edges 20 at a work site where a ceiling portion is constructed, and then these tapes are used. 50, the vibration absorbing member 30 needs to be placed, but according to the construction method according to the second embodiment (the method described in (3)), the vibration absorbing member in which the locked portion 230 is fixed in advance. If the member 130 is prepared, the vibration absorbing member 130 is temporarily locked by locking the locked portion 230 of the vibration absorbing member 130 to the locking portion 313 attached to the field edge 20 at the work site. It is possible to improve workability at the work site.

(5) Modified Example In the above-described embodiment, the case where glass wool is used as the elastic members 32 and 132 has been described. However, the elastic members 32 and 132 may include at least one of glass wool and rock wool. The members 32 and 132 may be formed of rock wool. However, since glass wool is easier to compress than rock wool, if glass wool is used for the elastic member 32, the density of the elastic member 32 can be increased and the weight 34 can be stably disposed on the elastic members 32 and 132.

  Further, instead of the sound absorbing member 40, a low-density rock wool sheet may be used. Furthermore, the sound absorbing member 40 (or low density rock wool sheet) may be omitted. However, as described above, if the sound absorbing member 40 (or low density rock wool sheet) is provided, the sound insulation of the ceiling portion can be further enhanced.

  Further, the density of the sound absorbing member 40 is not limited to the above. For example, a glass wool sheet or rock wool sheet having the same density as the elastic member 32 may be used as the sound absorbing member 40. However, if it sets as mentioned above, a lightweight floor impact sound can be absorbed by the sound absorption member 40, and the sound-insulating property of a ceiling part can be improved effectively. Even when a low-density rock wool sheet is used in place of the sound absorbing member 40, if this density is set so as to be able to absorb light floor impact sound, that is, vibration in the middle and high frequencies, sound insulation of the ceiling portion Sexually can be enhanced effectively.

  The material of the ceiling board 10 and the weight main body 34a is not limited to the above. For example, the ceiling board 10 may be wood other than gypsum board. The weight body 34a may be stainless steel other than steel or iron.

  The specific dimensions and density of the elastic member 32, the weight 34, and the sound absorbing member 40 are not limited to the above. However, if the thickness of the elastic member 32 and the weight 34 is made smaller than the height dimension of the field edge 20, the vibration absorbing member 30 can be prevented from protruding above the field edge 20, and the upper side of the field edge 20. It is possible to avoid interference between the vibration absorbing member 30 and a member such as a field edge receiver disposed in Similarly, when the sound absorbing member 40 is provided, in order to avoid this interference, the dimensions of the elastic member 32, the weight 34, and the sound absorbing member 40 are set so that the upper end of the sound absorbing member 40 is lower than the upper end of the field edge 20. It is preferable to set so that.

  Moreover, the method of constructing the ceiling portion is not limited to the above. For example, after the ceiling board 10 is fixed to the field edge 20, the vibration absorbing member 30 may be placed on the upper surface of the ceiling board 10. However, if the construction method described in the above (2) and (3) is used, it can be easily constructed, and the work above the field edge 20, that is, in the ceiling, can be omitted or the work time can be shortened. Work performance can be improved.

  Further, the number of weights 34 fixed to one elastic member 32 is not limited to the illustrated one.

  For example, in the vibration absorbing member 30 according to the first embodiment, one elastic member 32 may be provided with a plurality of rows of weights 34 along the front-rear direction. For example, as shown in FIG. 16, the weights 34 may be arranged in two rows on one elastic member 32. However, even in this case, the distance d1 between the weights 34 is not less than twice the reference distance d_A, and the side end surfaces 32e, 32e, 32f, and 32f of the elastic member 32 and the weight 34 closest to the side end faces 32e, 32e, 32f, and 32f. The separation distances d2 and d3 are not less than the reference distance d_A.

  Moreover, although the said 1st Embodiment demonstrated the case where the vibration absorption member 30 was mounted in the upper surface of the ceiling board 10, you may make it provide the vibration absorption member 30 which concerns on 1st Embodiment in the inner wall of a building. . For example, as shown in FIG. 17, the vibration absorbing member 30 according to the first embodiment is formed on the surface (surface opposite to the room A) of the inner wall material (face material) 110 constituting the inner surface of the room (space) A. May be provided.

  In the vibration absorbing member 130 according to the second embodiment, the lid member 160 may be omitted. However, if the lid member 160 is provided, it is possible to prevent the weight 34 from falling even if the weight 34 is peeled off from the elastic member 32 when the vibration absorbing member 130 is locked to the locking portion 313. Further, even if the vibration absorbing member 130 falls from the locking portion 313, the weight 34 can be prevented from scattering around.

  In the vibration absorbing member 130 according to the second embodiment, the second locking sheet 220, the connecting member 301, and the auxiliary connecting member 302 can be omitted. Further, the specific number of the locking sheets 210 and the second locking sheets 220 fixed to one vibration absorbing member 130 is not limited to the above. Further, the sheets 210 and 220 are not limited to tapes having the adhesive surface as described above. Further, the specific fixing positions of the sheets 210 and 220 are not limited to the above. Further, the member used to temporarily fix the vibration absorbing member 130 and the field edge 20 is not limited to the locked portion 230 and the locking portion 313.

10 Ceiling board (face material)
20 Field edge (support member)
30 Vibration Absorbing Member 32 Elastic Member 34 Weight 34a Weight Body 34b Adhesive Layer 40 Sound Absorbing Member 50 Tape 130 Vibration Absorbing Member (Second Embodiment)
210 Locking sheet 220 Second locking sheet 230 Locked part 301 Connecting member 313 Locking part

Claims (12)

A vibration absorbing member that is disposed on the surface of a face material that partitions a space in a building and absorbs vibration of the face material,
A sheet-like elastic member that includes at least one of glass wool and rock wool, is disposed in contact with the surface of the face material, and extends along the surface;
A plurality of weights fixed on the surface opposite to the face material of the elastic member at intervals of a predetermined distance or more set in advance,
The weight includes a weight body having a specific gravity higher than that of the elastic member, and an adhesive layer that is interposed between the weight body and the elastic member to bond the weight body and the elastic member.
The separation distance between the side end surface of the elastic member and the weight closest thereto is set to be equal to or more than half the predetermined distance.
Vibration absorbing member. The vibration absorbing member according to claim 1,
A sheet-like sound absorbing member formed of glass wool or rock wool having the same density as the elastic member or lower density than the elastic member is disposed on the surface of the elastic member facing away from the face material.
Vibration absorbing member. The vibration absorbing member according to claim 1 or 2, wherein the vibration absorbing member is disposed on an upper surface of the face material constituting a ceiling of a building.
A locking sheet including a main body fixed to the lower surface of the elastic member and an extension extending outward from both side end surfaces of the elastic member;
A locked portion fixed to the extension portion in a state of being separated from the elastic member and locked to a locking portion provided on a support member for supporting the face material;
The length of the extension portion of the locking sheet is such that the lower surface of the elastic member is in a state where the face material is attached to the support member and the locked portion is locked to the locking portion. It is set to a dimension located below the lower end of the support member,
Vibration absorbing member. The vibration absorbing member according to claim 3,
Between the main body fixed to the upper surface of the elastic member so as to overlap with the main body of the locking sheet in a plan view, and extending between both end surfaces of the elastic member and extending the locking sheet The vibration absorbing member further comprising a second locking sheet including an extension portion sandwiching the locked portion. The vibration absorbing member according to claim 4,
A portion that penetrates the main body portion of the second locking sheet and is inserted into the elastic member; and a portion that restricts the main body portion of the second locking sheet from moving in a direction away from the elastic member; A connecting member including
Vibration absorbing member. A partition structure of a building provided with the vibration absorbing member according to claim 1 or 2,
The vibration absorbing member is disposed on the surface of the face material,
Building partition structure. In the partition structure of the building of Claim 6,
The face material is a member constituting the ceiling of the building,
The vibration absorbing member is disposed on an upper surface of the face material.
Building partition structure. In the partition structure of the building of any one of Claims 3-5,
The vibration absorbing member is disposed on the upper surface of the face material constituting the ceiling of the building,
Building partition structure. In the partition structure of the building of any one of Claims 6-8,
A plurality of support members that extend along the first direction and are arranged on the surface of the face material in a posture separated from each other along a direction orthogonal to the first direction, and support the face material. Prepared,
The vibration absorbing member is disposed between the adjacent support members,
Building partition structure. In the building partition structure according to claim 9,
The vibration absorbing member is disposed such that a gap is formed between a side end surface of the elastic member and the both supporting members between the adjacent supporting members.
Building partition structure. A method of installing the vibration absorbing member according to claim 1 or 2 on a surface of a face material that is supported by a plurality of support members arranged in a predetermined direction and constitutes a ceiling of a building,
A tape transfer step of transferring the tape between the adjacent support members; and
A temporary placement step of placing the vibration absorbing member on the top surface of the tape in a state where the plurality of weights are bonded to the top surface of the elastic member;
Pushing up the face material from below the tape on which the vibration absorbing member is placed to a position where the face material contacts the support member from below, and lifting the vibration absorbing member with the face material;
A fixing step of fixing the face material to the support member.
Installation method of vibration absorbing member. A method of installing the vibration absorbing member according to any one of claims 3 to 5 on a surface of a face material that is supported by a plurality of support members arranged in a predetermined direction and constitutes a ceiling of a building,
Preparing the vibration absorbing member;
One of the pair of locked portions is locked to the locking portion provided on one of the two adjacent supporting members, and the locking portion provided on the other supporting member is A temporary fixing step of locking the other locked portion and temporarily fixing the vibration absorbing member to the support member;
The face material is pushed up from below the vibration absorbing member temporarily fixed to the support member to a position where the face material contacts the support member from below, and the vibration absorbing member is lifted by the face material. Push-up process,
An installation method for a vibration absorbing member, comprising: a fixing step of fixing the face material to the support member.

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