JP2018003561A - Construction antivibration metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce amount of rubber of an elastic body used for a construction antivibration metal fitting and improve workability.SOLUTION: A floor joist metal fitting 28 fitted and fixed on an end part of a ceiling joist 11 is disposed on tip upper side of a bottom 24 of a base metal fitting 22 that is fitted and fixed on a building frame lateral face of a building. A cylinder-shaped rubber elastic body 37 is bonded and fixed between an upper face of the base metal fitting 22 and a lower face of the floor joist metal fitting 28 so that the floor joist metal fitting 28 is elastically supported with respect to the base metal fitting 22 in compression direction of the rubber elastic body 37.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an anti-vibration mounting bracket for building provided for anti-vibration between a building frame and a ceiling joist.

  Conventionally, as an anti-vibration structure between a frame in a multi-story building such as a two-story house and a ceiling joist that supports the ceiling material, there is an anti-vibration mounting bracket interposed between the frame and the ceiling joist. For example, Patent Document 1 discloses a structure that is supported only by a rubber elastic body. The anti-vibration fitting shown in Patent Document 1 includes a base fitting that is attached and fixed to a side surface of a building body, a joist fitting that is attached and fixed to an end of a joist, and a rubber elastic body that connects the base fitting and the joist fitting. It has.

JP 2014-037751 A

  However, in the anti-vibration mounting bracket for construction shown in Patent Document 1, since the rubber elastic body supports the ceiling joists in the shearing direction in the shearing direction, a large amount of rubber is required to secure rigidity. .

  In addition, at the time of installation work, it will be attached to the side of the cabinet in order from one end side of the ceiling joist, but at that time, the operator must hold the one end side of the ceiling joist from falling all the time, There is also a problem that it takes time and effort, and there is room for improvement.

  The present invention has been made in view of such various points, and an object of the present invention is to realize a vibration-proof mounting bracket having good workability while suppressing the amount of rubber of an elastic body.

  In order to achieve the above object, according to the present invention, the metal fitting attached and fixed to the side face of the housing and the end attached and fixed to the joist end are connected so as to be supported in the compression direction of the rubber elastic body.

  Specifically, in the first invention, a base bracket that is attached and fixed to a side surface of a building frame, a joist bracket that is disposed on the upper side of the base bracket and is fixed to an end of the joist, and the base bracket. And a rubber elastic body for connecting the joist metal fitting, and the rubber elastic body includes an upper surface of the base metal fitting and the upper surface of the base metal fitting so as to elastically support the joist metal fitting with respect to the base metal fitting in the compression direction of the rubber elastic body. It is characterized by being bonded and fixed to the bottom surface of the joists.

  By setting it as the said structure, since a joist is elastically supported by the compression direction of a rubber elastic body, the amount of rubber required for an elastic body can be reduced.

  A second invention is characterized in that, in the first invention, the joist fitting is arranged on the upper end side of the base fitting so that a space is provided above the base fitting side of the base fitting.

  With this configuration, it is possible to temporarily place one end of the joist in the space provided on the base end side of the joist fitting and the base fitting at the time of mounting work, and an operator when working the other end. Need not support one end. Thereby, workability | operativity at the time of attachment improves.

  According to a third invention, in the first or second invention, the base metal fitting includes a metal fitting body having the rubber elastic body fixed to an upper surface thereof, an upper portion extending upward from both sides in the width direction of the metal fitting body, Is provided with a pair of stopper portions facing the side surfaces of the joists.

  By adopting the above-described configuration, even when the ceiling joists are inclined, misaligned, twisted, or the like, the joists can be reliably supported by the stopper portions facing the side surfaces of the joists.

  In a fourth aspect based on the third aspect, at least one of the surface of the stopper portion facing the joist metal fitting side surface or the joist metal fitting side surface is provided with a cushioning material that softens the impact at the time of collision with the other. It is characterized by that.

  With the above configuration, when the ceiling joist is inclined, misaligned, twisted, etc., the shock in the collision between the joist bracket and the stopper portion of the base bracket is softened by the cushioning material, and the noise generated along with the collision Can be suppressed.

  As described above, according to the present invention, the joist fittings attached to the ceiling joists are elastically supported in the compression direction of the rubber elastic body with respect to the base metal fittings on the building skeleton side. The amount of rubber can be reduced compared to the conventional technology. Moreover, workability can be improved by utilizing the space provided above the base end side of the base metal fitting when the vibration-proof metal fitting is attached.

It is a perspective view of the anti-vibration mounting bracket for constructions concerning the embodiment of the present invention. It is a front view of the vibration isolating mounting bracket for construction. It is a side view which shows the state which attached and fixed the vibration proof attachment metal fitting for construction. It is a figure which shows the ceiling structure using the vibration proof mounting bracket for construction. It is a figure which shows the attachment work of the ceiling joist using the vibration isolating attachment bracket for construction.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

  FIG. 4 shows a ceiling structure according to an embodiment of the present invention. This ceiling structure is a ceiling structure of a building such as a two-story house constructed by a framed wall construction method (2 × 4 construction method).

  In FIG. 4, reference numeral 1 denotes an upper structure as a frame disposed between the first floor portion and the second floor portion of the building. This upper structure 1 is a surrounding material 2 (floor beam material) in which two pieces of wood are stacked. And a plurality of floor joists (not shown) installed around the surrounding material 2. 4 is a floor material on the floor supported on the upper structure 1, and this floor material 4 is formed by laminating a floor finishing material 5 and a floor base material 6 in order from the top.

  The floor finish 5 may be a commonly used flooring (for example, plywood flooring or laminate flooring).

  Examples of the floor base material 6 include structural plywood, but a laminated structure with an ALC (lightweight cellular concrete) panel 7 or the like can also be used. The floor base material 6 may have a general structure.

  A plurality of ceiling joists 11, 11,... Extending in parallel with the floor joists are supported at the position between the floor joists on the surrounding material 2 (side portions of the casing) of the upper structure 1, and are supported. A ceiling material 14 is suspended and supported on the ceiling joist 11 via a field edge receiving material 12 and a field edge 13.

  That is, the field edge receiving material 12 is fixed to the side surface of the intermediate portion excluding the end portion of the ceiling joist 11 via the vibration-proof hanging tree 43, and the lower surface of the field edge receiving material 12 has a plurality of parallel to each other. .. Are fixed, and a ceiling member 14 on the lower floor, in which two gypsum boards are stacked on the lower surfaces of these field edges 13, 13,... In FIG. 4, reference numeral 15 denotes a glass wool for sound insulation placed and fixed on the field edge 13.

  Both end portions of each ceiling joist 11 are supported by the surrounding material 2 of the upper structure 1 via the vibration isolating mounting bracket 21 for building according to the embodiment of the present invention.

  As shown in FIG. 1 and FIG. 2 in an enlarged manner, the vibration-proof mounting bracket 21 is disposed between the base bracket 22, the joist bracket 28 disposed on the upper side thereof, and the base bracket 22 and the joist bracket 28. The rubber elastic body 37 is provided.

  The base metal fitting 22 has a U-shaped cross-section that opens upward, and is manufactured by press molding of a metal plate material such as an iron plate. On the base end side (the side to be attached to the building frame) of the base metal fitting 22, a pair of fixing portions 23 extending outward on both the left and right sides in the width direction are integrally provided over the entire top and bottom. A plurality of (two in the illustrated example) screw insertion holes 22a, 22a,... The tapping screw S (see FIG. 3) is inserted into each screw insertion hole 22a, and the tapping screw S is screwed into the surrounding material 2 of the upper structure 1 which is a building frame to be fastened. It is structured to be attached and fixed to the surrounding material 2 (the side of the casing) of the structure 1.

  The bottom 24 of the base metal 22 is a rectangular flat plate, and constitutes a base metal body as referred to in the present invention, and a pair of left and right stoppers 25 extending parallel to each other upward on both sides in the width direction of the bottom 24. , 25 are integrally formed, and these stopper portions 25, 25 are side wall portions of the base metal fitting 22.

  On the other hand, the joist fitting 28 has a U-shaped cross section disposed on the upper side of the base fitting 22 and is manufactured by press molding of a metal plate material such as an iron plate. The joist bracket 28 includes a rectangular flat plate-shaped bottom portion 29 and left and right side portions 30 and 30 extending in parallel upward from both sides in the width direction of the bottom portion 29. The side portions 30 and 30 are respectively provided with oval screw insertion holes 28a and 28a in the vertical direction, and the ceiling joists 11 arranged on the bottom 29 are passed through the tapping screws S through the screw insertion holes 28a. It is fixed to the metal fitting 28.

  The interval between the outer surfaces of the side portions 30, 30 is smaller than the interval between the opposing surfaces (inner side surfaces) of the stopper portions 25, 25 of the base metal 22 by a predetermined dimension. , 25 can be inserted into the side portions 30 and 30 of the joist bracket 28 from above.

  A rubber cushioning material 26 is integrally provided on the inner side surface of the stopper portion 25 of the base metal fitting 22 by adhesion or the like in order to reduce the impact at the time of collision with the joist metal fitting 28. The cushioning material 26 is configured such that the portion facing the side portions 30 and 30 in a no-load state is thicker than the other portions, and the outer surface of the side portions 30 and 30 of the joist fitting 28 and the stopper portion of the base fitting 22. The inner surfaces 25 and 25 (buffer material 26) are opposed to each other with a gap of about 1.5 mm, for example.

  The rubber elastic body 37 is made of, for example, a cylindrical solid rubber, and a lower end surface that is one end surface along the center line direction is on the upper end side upper surface of the bottom 24 of the base metal fitting 22 and an upper end surface that is the other end. Each of the joists 28 is bonded and fixed to the bottom surface of the bottom 29 by vulcanization. Here, the rubber elastic body 37 is bonded and fixed to the front end side of the base metal fitting 22, and therefore, even when the base metal fitting 22 is attached to the housing side by the fixing portions 23, 23, the bottom 24 of the base metal fitting 22 is fixed. A space is provided above the base end side.

  And by using such a vibration-proof mounting bracket 21 for a building, the ceiling joist 11 is supported on the surrounding material 2 (frame side portion) of the upper structure 1, so that the ceiling joist 11 and the joist fitting 28 are The base metal fixture 22 fixed to the surrounding material 2 is configured to be elastically supported in the compression direction of the rubber elastic body 37. Thereby, at the time of construction, as shown in FIG. 3, the ceiling joists 11 are supported in such a manner that the joist metal fittings 28 sink into the base metal fittings 22.

  Further, as shown in FIG. 4, a vibration-proof hanging tree 43 is interposed between the ceiling joist 11 and the field edge receiving material 12 that supports the field edge 13, and the field edge receiving material 12, the field edge 13 and the ceiling material. 14 is supported on the ceiling joist 11 via a vibration-proof hanging tree 43.

  Next, a procedure for constructing the ceiling joists 11 and the ceiling material 14 on the upper structure 1 will be described. Each ceiling joist 11 is attached and fixed to the surrounding material 2 (frame side portion) of the upper structure 1 by two building vibration-proof mounting brackets 21 and 21.

  Specifically, first, the mounting position of each building anti-vibration mounting bracket 21 is marked at a predetermined height position on the side surface of the surrounding material 2 of the upper structure 1. Then, the anti-vibration mounting bracket 21 to be attached to one end portion of the ceiling joist 11 is brought into contact with the one mounting position, and the fixing portion 23 of the base metal fitting 22 is brought into contact so that the joist fitting 28 is located on the upper side. The tapping screw S is inserted into each screw insertion hole 22a, 22a,... Of the base metal fitting 22 and screwed into the surrounding material 2 to be fastened. It is attached and fixed to the side surface of the surrounding material 2 of the structure 1.

  Next, after cutting the ceiling joist 11 to a predetermined length (a length shorter by a predetermined dimension from the inner dimensions of the surrounding material 2), one end of the ceiling joist 11 is pushed up to incline the ceiling joist 11 and push it up The lower end of the ceiling joist 11 is placed on the bottom 29 from the upper side in the part surrounded by the bottom 29 of the joist fitting 28 and the left and right side portions 30, 30 in the attached vibration-proof fitting 21 for the building. Insert.

  Then, as shown in FIG. 5, while pushing up the other end of the ceiling joist 11, it is pushed into one end side, the ceiling joist 11 is leveled, and one end of the base joist 11 is on the base end side (surrounding material 2 side). Is temporarily placed on the joist fitting 28 so as to close the space provided in By carrying out like this, it can prevent that the one end part of the ceiling joist 11 falls in a subsequent operation | work.

  Thereafter, the remaining anti-vibration mounting bracket 21 for building is placed on the other end of the ceiling joist 11, and the end of the ceiling joist 11 is placed in the portion surrounded by the bottom 29 and the left and right side portions 30, 30 of the joist fitting 28. Insert.

  Then, the ceiling joist 11 is pulled back to an appropriate position, and in this state, the building vibration-proof mounting bracket 21 used on the other end of the ceiling joist 11 is brought into contact with the fixing portion 23 of the base metal fitting 22 at the mounting position. The base metal fitting 22 is attached and fixed to the peripheral member 2 of the upper structure 1 by inserting the tapping screws S into the respective screw insertion holes 22a of the fixing portion 23, screwing them into the peripheral member 2, and fastening them.

  In this state, the ceiling joist 11 is not yet fixed. Thereafter, the tapping screw S is inserted into the screw insertion holes 28a of the left and right side portions 30 and 30 of the joist fitting 28 of each building anti-vibration fitting 21 and screwed into the ceiling joist 11, thereby The ceiling joist 11 is fixed.

  When the ceiling joist 11 is thus constructed, the field joisting material 43 is then attached to the ceiling joist 11 via the anti-vibration hanging tree 43, the field edge 13 fixed to the lower surface thereof, and the fixing to the lower surface of the field edge 13 The ceiling material 14 and the glass wool 15 placed and fixed on the upper surface of the field edge 13 may be suspended and supported.

  Therefore, in the said embodiment, the both ends of the ceiling joist 11 are each supported with respect to the surrounding material 2 (floor beam material) of the upper structure 1 via the anti-vibration mounting brackets 21 and 21 for buildings. In each anti-vibration mounting bracket 21 for building, the base bracket 22 is fixedly attached to the surrounding material 2 of the upper structure 1 in the building, and the joist bracket 28 is fixed to the end portion of the ceiling joist 11, respectively. 28 is connected by a rubber elastic body 37 that is bonded and fixed to both, so that the ceiling joist 11 is constructed on the surrounding material 2 of the upper structure 1 by the anti-vibration mounting brackets 21 and 21 for both buildings. Only the rubber elastic body 37 of the vibration isolating mounting bracket 21 for construction is interposed between the surrounding material 2 side and the ceiling joist 11 side.

  Therefore, the surrounding material 2 side and the ceiling joist 11 side are not in direct contact with each other, and the vibration is always transmitted through the rubber elastic body 37. At this time, the joist metal fitting 28 is attached to the base metal fitting 22. On the other hand, since the rubber elastic body 37 is elastically supported in the compression direction, the amount of rubber used for the rubber elastic body 37 can be reduced.

  In addition, as described above, by temporarily placing the one end portion of the ceiling joist 11 on the joist fitting 28 so as to occupy the space provided on the base end side of the base fitting 22 as described above, The operator does not have to keep the one end portion from beginning to end, and can easily be prevented from falling, thereby improving workability.

  Furthermore, since the stopper portions 25 and 25 are provided on both sides in the width direction of the base metal fitting 22, even if the ceiling joist 11 is inclined, misaligned, twisted, etc., they abut against the stopper portion 25. Thus, the joist fitting 28 and the ceiling joist 11 can be reliably held.

  In addition, since the rubber cushioning material 26 is provided on the inner surface of the stopper portion 25 of the base bracket 22, the side portion 30 and the base of the joist bracket 28 that are generated due to tilting, displacement, twisting, etc. of the ceiling joists 11. The impact at the time of collision with the stopper portion 25 of the metal fitting 22 can be reduced and the occurrence of abnormal noise can be suppressed.

  The construction procedure may be a method of attaching the vibration-proof mounting bracket 21 to both ends of the ceiling joist 11 and then fixing it to the surrounding material 2. However, as in the construction procedure, one of the vibration-proof mounting brackets 21 is attached to the surrounding material 2. If it is the procedure which attaches the ceiling joist 11 after fixing to a rubber | gum, since it can construct in the state which is hard to apply a force to the rubber elastic body 37 at the time of construction, it is desirable.

  As described above, in the structure in which the ceiling joist 11 and the joist fitting 28 are elastically supported by the rubber fitting 37 with respect to the base fitting 22, when the rubber elastic member 37 is burned and broken in a fire or the like, 11 when a sudden force in the cutting direction is applied to the rubber elastic body 37 due to inclination, displacement, twisting, etc., and the connection between the base metal fitting 22 and the joist metal fitting 28 by the rubber elastic body 37 is released. There is a possibility that the ceiling joist 11 on the side falls together with the field edge 13 and the ceiling material 14. However, in this embodiment, even when the connection between the base metal fitting 22 and the joist metal fitting 28 by the rubber elastic body 37 is released, the joist metal fitting 28 can be received by the bottom portion 24 (metal fitting body) of the base metal fitting 22. . Thereby, it is possible to prevent the ceiling joists 11, the field edges 13 and the ceiling material 14 on the joist fitting 28 side from falling on the surrounding material 2 on the base metal fitting 22 side.

(Other embodiments)
In the above embodiment, the ceiling structure of the building built by the frame wall construction method (2 × 4 construction method) has been described. However, the present invention is constructed by a shaft construction method (wooden conventional construction method), a lightweight steel frame, or the like. The present invention can be applied to the ceiling structure of a building, and can also be applied to vibration isolation of joists other than the ceiling structure (for example, floor structure).

  In the above-described embodiment, the ceiling member 14 is supported by being suspended and supported on the ceiling joist 11 via the anti-vibration hanging tree 43. For example, the ceiling member 14 is directly attached to the ceiling joist 11 using a screw or the like. It may be fixed.

  In the above-described embodiment, the cushioning material 26 is provided on the inner surface of the stopper portion 25 of the base metal fitting 22, but it can also be provided on the outer surface of the side portion 30 of the joist metal fitting 28, or the inner surface and joist of the stopper portion 25. You may provide in the both sides of the side part 30 side of the metal fitting 28. FIG.

  Furthermore, in the above-described embodiment, the rubber elastic body 37 has a cylindrical shape, but may have another shape, for example, a prismatic shape. In these cases, the same effect as that of the embodiment can be obtained.

  INDUSTRIAL APPLICABILITY The present invention is extremely useful for an anti-vibration mounting bracket for construction used for anti-vibration of ceiling joists.

1 Superstructure (Housing)
2 Peripheral material 11 Ceiling joist 14 Ceiling material 21 Anti-vibration mounting bracket for building 22 Base bracket 23 Fixed portion 24 Bottom (bracket body)
25 Stopper part 26 Buffer material 28 joist bracket 29 bottom part 30 side part 37 rubber elastic body 43 anti-vibration hanging tree

Claims (4)

A base bracket that is attached and fixed to the side of the building frame;
A joist metal fitting which is disposed on the upper side of the base metal fitting and fixed to the end of the joist, and
A rubber elastic body for connecting the base metal fitting and the joist metal fitting,
The rubber elastic body is bonded and fixed between the upper surface of the base metal fitting and the lower surface of the joist metal fitting so as to elastically support the joist metal fitting with respect to the base metal fitting in the compression direction of the rubber elastic body. Anti-vibration mounting bracket for architecture. In claim 1,
The anti-vibration mounting bracket for building according to claim 1, wherein the joist bracket is disposed on the upper end of the base bracket so as to provide a space above the base end of the base bracket. In claim 1 or 2,
The base bracket is
A metal fitting body to which the rubber elastic body is fixed on the upper surface;
An anti-vibration mounting bracket for building, comprising a pair of stopper portions extending upward from both sides in the width direction of the metal fitting body and having an upper portion facing the side surface of the joist fitting. In claim 3,
An anti-vibration mounting bracket for a building according to claim 1, wherein a cushioning material is provided on at least one side of the stopper portion facing the side face of the joist fitting or at the side face of the joist fitting, so as to relieve an impact at the time of collision with the other.

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