JP5243816B2 - Damping damper - Google Patents

Damping damper Download PDF

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JP5243816B2
JP5243816B2 JP2008048465A JP2008048465A JP5243816B2 JP 5243816 B2 JP5243816 B2 JP 5243816B2 JP 2008048465 A JP2008048465 A JP 2008048465A JP 2008048465 A JP2008048465 A JP 2008048465A JP 5243816 B2 JP5243816 B2 JP 5243816B2
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tube
wood
damper
extended
joint
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JP2009203747A (en
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武史 野村
諭 千田
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Sumitomo Riko Co Ltd
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Sumitomo Riko Co Ltd
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本発明は、木造建築物の軸組内に、地震等の外力による震動を減衰させるために用いられる制震ダンパーに関する。   The present invention relates to a damping damper used for attenuating vibration caused by an external force such as an earthquake in a framework of a wooden building.

住宅等の木造建築物においては、柱と横架材とから形成される軸組内に、粘弾性体を利用した制震ダンパーをブレース状に架設して、加振時の粘弾性体の剪断変形により震動エネルギーの吸収を図る制震構造がよく用いられる。この制震ダンパーには、例えば特許文献1に示すように、互いに平行状態で対向する一対の木製帯板状剛性部材と、その木製帯板状剛性部材の中央部分の対向面間に接着介在される粘弾性体とからなる構造が知られている。   In a wooden building such as a house, a damping damper using a viscoelastic body is installed in a brace in a frame formed of columns and horizontal members, and shearing of the viscoelastic body during excitation is performed. Damping structures that absorb vibration energy by deformation are often used. In this damping damper, for example, as shown in Patent Document 1, an adhesive is interposed between a pair of wooden strip-like rigid members facing each other in a parallel state and an opposing surface of a central portion of the wooden strip-like rigid member. A structure composed of a viscoelastic body is known.

特開2000−110399号公報JP 2000-110399 A

木造建築物では、設計寸法と実際の建上げ寸法との間に誤差が生じやすい。この点特許文献1の構造では、ダンパーに木製の剛性部材を利用するため、長さ調整は現場で簡単に行える。しかし、帯板状の剛性部材間に粘弾性体を接着するダンパーを用いているため、軸組面内での回転剛性が低くなり、加振時に座屈するおそれが生じる。また、粘弾性体のはらみ出しを防止するためにダンパー部分に間柱を設ける必要があり、結局施工性を低下させてしまう。   In a wooden building, an error is likely to occur between the design dimension and the actual construction dimension. In this regard, in the structure of Patent Document 1, since a wooden rigid member is used for the damper, the length can be easily adjusted on site. However, since the damper that adheres the viscoelastic body between the band-plate-like rigid members is used, the rotational rigidity in the shaft assembly surface is low, and there is a possibility that it buckles during vibration. Moreover, in order to prevent the viscoelastic body from sticking out, it is necessary to provide a stud in the damper portion, which ultimately reduces workability.

そこで、本発明は、木造建築物であってもガタなく簡単に取付が可能で、施工性に優れるのは勿論、高い回転剛性を確保して座屈強度を向上させ、信頼性にも優れる制震ダンパーを提供することを目的としたものである。   Therefore, the present invention can be easily mounted without play even if it is a wooden building, and it has excellent workability as well as high buckling strength by securing high rotational rigidity and excellent reliability. The purpose is to provide seismic dampers.

上記目的を達成するために、請求項1に記載の発明は、外管と、その外管に同軸で部分的に遊挿される内管と、両管の重合部間にあって両管との対向面が夫々接着される粘弾性体とからなるダンパー部を有し、木造建築物の軸組内へブレース状に架設されて、軸組の変形に伴う外管と内管との相反する軸方向への動作により、粘弾性体を剪断変形させて減衰作用を生じさせる制震ダンパーであって、ダンパー部の軸方向両端となる外管及び内管の端部に設けた接合部に、軸状の延長木材を同軸で夫々差し込み接合して、両端の延長木材を介して軸組内に架設可能とすると共に、延長木材に、接合部を越えて両管の重合部側へ突出し、管の内面に当接する突出部を形成したことを特徴とするものである。
請求項2に記載の発明は、請求項1の構成において、延長木材が外管及び内管よりも横断面形状が大きい場合でも支障なく採用可能とするために、接合部を、延長木材の差し込み端部に合わせて拡開させたことを特徴とするものである。
請求項3に記載の発明は、請求項1又は2の構成において、延長木材の差し込み接合を容易に行うために、延長木材の接合部を、延長木材の差し込み端部が間に差し込まれる一対の連結板としたことを特徴とするものである。
請求項に記載の発明は、請求項1乃至の何れかの構成において、必要な回転剛性を簡単且つ確実に確保するために、接合部と、その接合部に差し込まれた延長木材の差し込み端部とを、両者のオーバーラップ部分に設けられる複数の接合具によって接合する構造とし、延長木材の軸方向長さをL1、ダンパー軸方向でのオーバーラップ部分の長さをL2、オーバーラップ部分におけるダンパー軸方向での接合具の両端間距離をL3として、L2/L1≧0.15、且つ、L3/L2≧0.5の関係を満足させることを特徴とするものである。
In order to achieve the above object, the invention according to claim 1 is directed to an outer pipe, an inner pipe coaxially and partially loosely inserted into the outer pipe, and a facing surface of both pipes between the overlapping portions of both pipes. Has a damper part composed of a viscoelastic body to be bonded to each other, and is installed in a brace shape in the frame of the wooden building, in the opposite axial direction of the outer tube and the inner tube due to the deformation of the frame Is a vibration damping damper that shears and deforms the viscoelastic body to produce a damping action, and is connected to the joint provided at the end of the outer tube and the inner tube at both ends of the damper in the axial direction. The extension wood can be inserted and joined coaxially, and can be installed in the shaft assembly via the extension wood at both ends, and the extension wood protrudes to the overlapping part side of both pipes beyond the joint, to the inner surface of the pipe The protrusion part which contact | abuts was formed , It is characterized by the above-mentioned.
According to the second aspect of the present invention, in the configuration of the first aspect, in order to enable the extension wood to be employed without hindrance even when the cross-sectional shape of the extension wood is larger than that of the outer pipe and the inner pipe, It is characterized by being expanded in accordance with the end.
According to a third aspect of the present invention, in the configuration of the first or second aspect, in order to facilitate the insertion joining of the extended wood, the extended wood joining portion is inserted into a pair of insertion ends of the extended wood. It is characterized by having a connecting plate.
According to a fourth aspect of the present invention, in the configuration of any one of the first to third aspects, in order to ensure the necessary rotational rigidity easily and reliably, the joint portion and the extension wood inserted into the joint portion are inserted. The end part is structured to be joined by a plurality of joints provided in the overlap part of both, the length of the extended wood in the axial direction is L1, the length of the overlap part in the damper axial direction is L2, and the overlap part The distance between both ends of the joint in the damper axis direction is L3, and the relationship of L2 / L1 ≧ 0.15 and L3 / L2 ≧ 0.5 is satisfied.

請求項1に記載の発明によれば、木造建築物であってもガタなく取付が可能となり、安定した入力も得られて適正な制震効果が得られる。特に、高い回転剛性が確保できて座屈に強い構造となるため、信頼性が向上する。而も、現場での煩雑な管理や特殊な工具が不要で、短時間で簡単に取り付けできるため、施工性に優れたものとなる。
また、ダンパー部と延長木材との一体性が高まり、より座屈に強い構造となる。
請求項2に記載の発明によれば、請求項1の効果に加えて、管側よりも横断面形状が大きい延長木材であっても支障なく採用でき、接合後の一体性も維持できる。
請求項3に記載の発明によれば、請求項1又は2の効果に加えて、延長木材の差し込み接合が容易に行える。
請求項に記載の発明によれば、請求項1乃至の何れかの効果に加えて、必要な回転剛性が簡単且つ確実に確保可能となる。
According to the first aspect of the present invention, even a wooden building can be mounted without play, a stable input can be obtained, and an appropriate vibration control effect can be obtained. In particular, high rotational rigidity can be ensured and the structure is strong against buckling, so that reliability is improved. In addition, since complicated management at the site and special tools are not required, and it can be easily attached in a short time, it is excellent in workability.
In addition, the unity between the damper portion and the extended wood is increased, and the structure is more resistant to buckling.
According to the second aspect of the present invention, in addition to the effect of the first aspect, even extended wood having a larger cross-sectional shape than the tube side can be employed without any problem, and the integrity after joining can be maintained.
According to invention of Claim 3, in addition to the effect of Claim 1 or 2, the insertion joining of an extended wood can be performed easily.
According to the invention described in claim 4 , in addition to the effect of any one of claims 1 to 3 , the necessary rotational rigidity can be ensured easily and reliably.

以下、本発明の実施の形態を図面に基づいて説明する。
図1は、本発明の制震ダンパーを取り付けた軸組の一例を示す正面図である。まず軸組1は、図示しない基礎上に固定される土台2と、その土台2上に立設される柱3,3と、柱3,3の上端間で水平に架設される梁4とを有する。
この軸組1において、右側の柱3の上端と梁4との仕口部と、左側の柱3の下端と土台2との仕口部との間には、ダンパー部6と、その両端へ同軸で差し込み接合される一対の延長木材7,7とからなる制震ダンパー5が、ブレース状に架設されている。まずダンパー部6は、図2に示すように、横断面長円形状の外管8と、その外管8より一回り小さい横断面長円形状で、外管8に一端側から同軸で部分的に遊挿される内管9と、両管の重合部分で両管間の全面に介在されて両管との対向面が接着される粘弾性体(ここではスチレン系、図2の斜線部分)10とから形成されている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an example of a shaft assembly to which a vibration damper of the present invention is attached. First, the shaft assembly 1 includes a base 2 fixed on a foundation (not shown), columns 3 and 3 standing on the base 2, and a beam 4 horizontally installed between the upper ends of the columns 3 and 3. Have.
In this shaft set 1, between the joint between the upper end of the right column 3 and the beam 4 and between the lower end of the left column 3 and the joint between the base 2, the damper portion 6 and both ends thereof A damping damper 5 composed of a pair of extended lugs 7 and 7 which are coaxially inserted and joined is installed in a brace shape. First, as shown in FIG. 2, the damper portion 6 has an outer tube 8 having an elliptical cross section and an oblong cross section that is slightly smaller than the outer tube 8, and is coaxial with the outer tube 8 from one end side. And a viscoelastic body (here, styrene-based, shaded portion in FIG. 2) 10 that is interposed between the two pipes at the entire surface between the two pipes and bonded to the opposite faces of both pipes. And is formed from.

また、ダンパー部6において、外管8は、長軸を断面として分割した一対の半割金具11,11の開放側を向かい合わせにして、長手方向の全長に亘って延設されたフランジ12,12同士をボルト13及びナット14で接合したもので、各半割金具11における延長木材7の接合側の端部には、図3にも示すように、短軸方向で対向する一対の外側部分のみがそのまま伸長した格好で、延長木材7と略同じ幅を有する連結板15,15が延設されて、両連結板15,15により、長軸方向の両端を開放し、延長木材7の差し込み端部が差し込み可能な接合部16を形成している。   Further, in the damper portion 6, the outer tube 8 has a flange 12 extending over the entire length in the longitudinal direction with the open sides of a pair of half-fittings 11, 11 divided with the long axis as a cross section facing each other. 12 are joined to each other with bolts 13 and nuts 14, and a pair of outer portions facing each other in the minor axis direction, as shown in FIG. The connecting plates 15 and 15 having the same width as the extended wood 7 are extended, and both ends in the long axis direction are opened by the connecting plates 15 and 15 so that the extended wood 7 is inserted. A joint portion 16 into which the end portion can be inserted is formed.

但し、ここでは延長木材7の幅が、フランジ12を除く半割金具11の長軸方向の幅よりも大きいため、各連結板15は、延長木材7と略同幅となるように根元部分がテーパとなる羽子板状に形成されて、接合部16を幅方向で外管8よりも拡開させている。さらに、各連結板15には、延長木材7の接合用の小孔17,17・・が複数穿設されているが、ここでは両連結板15,15間で小孔17同士が重ならないように、対面間で見て互いに左右反転させた位置関係となっている。また、ダンパー軸方向においても、隣接する小孔17同士が同一直線上に位置しないように設定している。これは延長木材7の繊維方向がダンパー軸方向と一致するため、同じ繊維上での近距離での木ねじのねじ込みを避けて安定した接合力を得るためである。   However, since the width of the extended wood 7 is larger than the width in the major axis direction of the half metal fitting 11 excluding the flange 12, the connecting plate 15 has a root portion so as to be substantially the same width as the extended wood 7. It is formed in the shape of a tapered blade, and the joint 16 is expanded more than the outer tube 8 in the width direction. Further, each connecting plate 15 has a plurality of small holes 17, 17... For joining the extended wood 7. Here, the small holes 17 do not overlap each other between the connecting plates 15 and 15. In addition, the positional relationship is reversed left and right as seen between the faces. Moreover, it sets so that adjacent small holes 17 may not be located on the same straight line also in a damper axial direction. This is because the fiber direction of the extended wood 7 coincides with the damper axis direction, so that a stable joining force can be obtained by avoiding screwing of the wood screw at a short distance on the same fiber.

一方、内管9における延長木材7の接合側の端部においては、延長木材7の差し込み端部が差し込み可能となっているが、ここでは延長木材7の横断面形状が内管9の横断面形状よりも大きいため、当該端部には、図4にも示すように、バルジ加工等により、テーパ部18を介して外管8への遊挿部分よりも拡開させた筒状の接合部19が形成されている。20,20は、接合部19の長軸方向で対向する両面において開口端からテーパ部18にかけて軸線と平行に形成されたスリットである。また、短軸方向で対向する両面には、延長木材7の接合用の小孔21,21・・が、外管8と同様に互いに左右反転させた位置関係で、且つ隣接する小孔21同士が同一直線上に位置しないように複数穿設されている。   On the other hand, at the end of the inner pipe 9 on the joining side of the extended wood 7, the insertion end of the extended wood 7 can be inserted. Here, the cross-sectional shape of the extended wood 7 is the cross-section of the inner pipe 9. Since it is larger than the shape, as shown in FIG. 4, the end portion is a tubular joint that is expanded more than the loose insertion portion to the outer tube 8 through the taper portion 18 by bulging or the like. 19 is formed. Reference numerals 20 and 20 denote slits formed in parallel with the axis from the opening end to the taper portion 18 on both surfaces facing each other in the major axis direction of the joint portion 19. Further, the small holes 21, 21,... For joining the extended wood 7 are opposite to each other in the same manner as the outer tube 8 on both surfaces facing each other in the minor axis direction, and the adjacent small holes 21 are adjacent to each other. Are perforated so as not to be located on the same straight line.

そして、延長木材7は、横断面矩形の長尺材で、ここでは構造用単板積層材が使用されている。勿論無垢材でも差し支えない。図5(A)は、外管8に接合される延長木材7(区別するために以下「7A」と表記する。)を示すもので、この延長木材7Aにおける外管8への差し込み端部には、他端側と厚みが同じで、幅方向の寸法のみが小さくなる凸状の突出部22が形成されている。一方、同図(B)は、内管9に接合される延長木材7(以下「7B」と表記する。)を示すもので、この延長木材7Bにおける内管9への差し込み端部には、他端側よりやや小さい厚みで、幅が内管9のテーパ部18に合わせた先細り状となる突出部23が形成されている。   The extended wood 7 is a long material having a rectangular cross section, and here, a structural single plate laminated material is used. Of course, solid wood can be used. FIG. 5A shows an extended wood 7 joined to the outer tube 8 (hereinafter referred to as “7A” for distinction), and the extension wood 7A has an insertion end portion to the outer tube 8 shown in FIG. Is formed with a projecting protrusion 22 having the same thickness as the other end and having a smaller dimension in the width direction. On the other hand, FIG. 5B shows an extended wood 7 (hereinafter referred to as “7B”) joined to the inner tube 9, and an insertion end portion of the extended wood 7B into the inner tube 9 includes: A projecting portion 23 is formed which is slightly smaller than the other end side and has a taper shape matching the tapered portion 18 of the inner tube 9.

以上の如く構成された制震ダンパー5においては、まず、ダンパー部6は、接合部19を形成した内管9へ粘弾性体10のシートを巻き付け、これを半割金具11,11で挟んでプレスによって加圧成型し、プレス終了後に半割金具11のフランジ12同士をボルト13及びナット14で接合することで製造される。
こうしてダンパー部6を製造した後、外管8の連結板15,15間に、延長木材7Aの差し込み端部を、突出部22が連結板15を越えて外管8と内管9との重合部側へ突出するまで差し込む。この状態で突出部22における厚み方向の上下面は外管8の内面に夫々当接している。
その後、突出部22を除く差し込み端部と連結板15とのオーバーラップ部分で、小孔17の位置に合わせて短軸方向の上下両面から接合具となる木ねじ24,24・・を夫々ねじ込む。
In the damping damper 5 configured as described above, first, the damper portion 6 wraps the sheet of the viscoelastic body 10 around the inner tube 9 in which the joint portion 19 is formed, and sandwiches this between the half metal fittings 11 and 11. It is manufactured by press molding with a press and joining the flanges 12 of the half metal fittings 11 with bolts 13 and nuts 14 after the press.
After the damper portion 6 is manufactured in this way, the insertion end portion of the extended wood 7A is interposed between the connecting plates 15 and 15 of the outer tube 8, and the protruding portion 22 passes the connecting plate 15 and the outer tube 8 and the inner tube 9 are superposed. Insert until protruding to the side. In this state, the upper and lower surfaces of the protruding portion 22 in the thickness direction are in contact with the inner surface of the outer tube 8.
Thereafter, wood screws 24, 24... Serving as connecting tools are screwed in from the upper and lower surfaces in the minor axis direction in accordance with the position of the small hole 17 at the overlap portion between the insertion end portion excluding the protruding portion 22 and the connecting plate 15.

同様に、内管9の接合部19に、延長木材7Bの差し込み端部を、突出部23がテーパ部18内に嵌合して先端がテーパ部18を越えて外管8と内管9との重合部側へ突出するまで差し込む。この状態で突出部23における厚み方向の上下面は内管9の内面に夫々当接する。
その後、突出部23を除く差し込み端部と接合部19とのオーバーラップ部分で、小孔21の位置に合わせて短軸方向の上下両面から接合具となる木ねじ25,25・・を夫々ねじ込む。
これにより、ダンパー部6の両端に夫々延長木材7A,7Bが連結された制震ダンパー5が得られる。
特にここでは、延長木材7の長さをL1、延長木材7とダンパー部6とのオーバーラップ部分をL2、オーバーラップ部分におけるダンパー部軸方向での木ねじ24,25の両端間距離をL3として、
L2/L1≧0.15、且つ、L3/L2≧0.5
の関係を満たす設定としている。
Similarly, the insertion end portion of the extended wood 7B is fitted into the joint portion 19 of the inner tube 9, the projecting portion 23 is fitted into the tapered portion 18, and the tip exceeds the tapered portion 18, and the outer tube 8 and the inner tube 9. Insert until protruding to the overlapping part. In this state, the upper and lower surfaces in the thickness direction of the protruding portion 23 abut against the inner surface of the inner tube 9.
Thereafter, wood screws 25, 25... Serving as connecting tools are screwed in from the upper and lower surfaces in the minor axis direction in accordance with the position of the small hole 21 at the overlap portion between the insertion end portion excluding the projecting portion 23 and the joint portion 19.
Thereby, the damping damper 5 by which the extended timbers 7A and 7B were connected with the both ends of the damper part 6, respectively is obtained.
In particular, here, the length of the extended wood 7 is L1, the overlap portion between the extended wood 7 and the damper portion 6 is L2, and the distance between both ends of the wood screws 24 and 25 in the axial direction of the damper portion in the overlap portion is L3.
L2 / L1 ≧ 0.15 and L3 / L2 ≧ 0.5
It is set to satisfy the relationship.

この制震ダンパー5を、図1に示すように軸組1内へブレース状に架設する場合、仕口部に夫々木ねじで固定されたコ字状のブラケット26,26に、延長木材7A,7Bの端部を夫々差し込んで木ねじで固定すればよい。
このとき、軸組1内の対角線長さに合わせて、ブラケット26に丁度よく収まるように延長木材7A,7Bの端部の長さや形状を適宜現場で加工することができるため、階高の相違による長さ違い等に容易に対応可能となる。
When the damping damper 5 is installed in a brace shape in the shaft assembly 1 as shown in FIG. 1, the extension lumbers 7A and 7B are attached to the U-shaped brackets 26 and 26 fixed to the joints with wood screws, respectively. It is only necessary to insert the ends of each and fix them with wood screws.
At this time, the length and shape of the end portions of the extended lumbers 7A and 7B can be appropriately processed in the field so as to fit exactly in the bracket 26 according to the diagonal length in the shaft assembly 1, so that the difference in floor height It is possible to easily cope with the difference in length due to.

こうして制震ダンパー5を架設した軸組1においては、地震等によって水平な外力が反復して加わり、軸組1のフレーム面が変形すると、制震ダンパー5には軸方向に圧縮力と引張力とが交互に作用して、ダンパー部6の外管8と内管9とが相反する軸方向へ動作する。この動作によって粘弾性体10を剪断変形させて減衰作用を生じさせることになる。このとき、ダンパー部6へは夫々延長木材7A,7Bを介して軸方向への入力がなされるため、荷重入力軸の偏心が抑えられ、安定した入力で粘弾性体10を剪断変形させることができ、効果的な減衰作用が得られる。また、延長木材7A,7Bは外管8及び内管9へ夫々差し込み接合されているため、軸組面内での高い回転剛性が確保でき、座屈が生じにくくなる。   In the shaft assembly 1 in which the vibration damper 5 is thus installed, horizontal external force is repeatedly applied by an earthquake or the like, and when the frame surface of the shaft assembly 1 is deformed, the vibration damper 5 is compressed in the axial direction and tensile force. And the outer tube 8 and the inner tube 9 of the damper portion 6 operate in the opposite axial directions. By this operation, the viscoelastic body 10 is sheared and deformed to cause a damping action. At this time, since the axial direction is input to the damper portion 6 through the extended woods 7A and 7B, the eccentricity of the load input shaft is suppressed, and the viscoelastic body 10 can be sheared and deformed with a stable input. Effective damping action can be obtained. Further, since the extended woods 7A and 7B are inserted and joined to the outer tube 8 and the inner tube 9, respectively, high rotational rigidity in the shaft assembly surface can be secured, and buckling hardly occurs.

このように、上記形態の制震ダンパー5によれば、外管8及び内管9の端部に設けた接合部16,19に、軸状の延長木材7A,7Bを同軸で夫々差し込み接合して、両端の延長木材7A,7Bを介して軸組1内に架設可能としたことで、木造建築物であってもガタなく取付が可能となり、安定した入力も得られて適正な制震効果が得られる。特に、高い回転剛性が確保できて座屈に強い構造となるため、信頼性が向上する。而も、現場での煩雑な管理や特殊な工具が不要で、短時間で簡単に取り付けできるため、施工性に優れたものとなる。   Thus, according to the damping damper 5 of the said form, axial extension wood 7A, 7B is coaxially inserted and joined to the junction parts 16 and 19 provided in the edge part of the outer pipe 8 and the inner pipe 9, respectively. Since it can be installed in the shaft assembly 1 through the extended wood 7A and 7B at both ends, it can be mounted without play even in a wooden building, and a stable input can be obtained to achieve an appropriate vibration control effect. Is obtained. In particular, high rotational rigidity can be ensured and the structure is strong against buckling, so that reliability is improved. In addition, since complicated management at the site and special tools are not required, and it can be easily attached in a short time, it is excellent in workability.

特にここでは、接合部16,19を、延長木材7A,7Bの差し込み端部に合わせて拡開させているので、外管8や内管9よりも横断面形状が大きい延長木材7A,7Bであっても支障なく採用でき、接合後の一体性も維持できる。
また、接合部16を、延長木材7Aの差し込み端部が間に差し込まれる一対の連結板15,15としたことで、延長木材7Aの差し込み接合が容易に行える。
さらに、延長木材7A,7Bに、接合部16,19を越えて両管の重合部側へ突出し、管の内面に当接する突出部22,23を形成したことで、ダンパー部6と延長木材7A,7Bとの一体性が高まり、より座屈に強い構造となる。
In particular, here, since the joint portions 16 and 19 are expanded in accordance with the insertion end portions of the extension woods 7A and 7B, the extension woods 7A and 7B having a larger cross-sectional shape than the outer tube 8 and the inner tube 9 are used. Even if it exists, it can be adopted without any problem and the integrity after joining can be maintained.
Moreover, the joining part 16 is made into a pair of connecting plates 15 and 15 in which the insertion end part of the extended wood 7A is inserted, so that the extension wood 7A can be easily inserted and joined.
Further, the extension woods 7A and 7B are formed with projections 22 and 23 that project beyond the joints 16 and 19 toward the overlapping portions of both pipes and come into contact with the inner surfaces of the pipes. , 7B, and the structure becomes stronger against buckling.

そして、接合部16,19と、その接合部16,19に差し込まれた延長木材7A,7Bの差し込み端部とを、両者のオーバーラップ部分に設けられる複数の木ねじ24,25によって接合する構造とし、延長木材7A,7Bの軸方向長さをL1、ダンパー軸方向でのオーバーラップ部分の長さをL2、オーバーラップ部分におけるダンパー軸方向での木ねじ24,25の両端間距離をL3として、L2/L1≧0.15、且つ、L3/L2≧0.5の関係を満足させるようにしているので、必要な回転剛性が簡単且つ確実に確保可能となっている。   And it is set as the structure which joins the junction parts 16 and 19 and the insertion end part of the extension timber 7A and 7B inserted in the junction parts 16 and 19 by the several wood screws 24 and 25 provided in both overlap part. The length of the extension wood 7A, 7B in the axial direction is L1, the length of the overlap portion in the damper axial direction is L2, and the distance between both ends of the wood screws 24, 25 in the damper axial direction in the overlap portion is L3. Since the relationship of /L1≧0.15 and L3 / L2 ≧ 0.5 is satisfied, the necessary rotational rigidity can be easily and reliably ensured.

なお、上記形態では、外管の端部に一対の連結板からなる接合部を、内管の端部に筒状の接合部を夫々形成しているが、互いに逆にしてもよいし、両管共に一対の連結板を採用したり、筒状の接合部を採用したりして差し支えない。また、接合部を拡開状とする構造も、何れか一方のみとしたり、両管共に拡開させない形状としたりすることもできる。
さらに、延長木材と各管とを接合する木ねじは、上記形態のように上下面から同じ数でねじ込むものに限らず、十分な接合強度が確保できれば、一方の面の数を減らしたり、一方の面のみから長い木ねじをねじ込んだり、適宜変更可能で、勿論木ねじ以外に、接合具としては、釘やボルト及びナット等も採用可能である。
In the above embodiment, the joint portion formed of a pair of connecting plates is formed at the end portion of the outer tube, and the tubular joint portion is formed at the end portion of the inner tube. A pair of connecting plates may be employed for the pipes, or a cylindrical joint may be employed. Moreover, the structure which makes a junction part expand shape can also be made into either one, or can also be set as the shape which is not made to expand both pipes.
Furthermore, the wood screws that join the extended wood and each pipe are not limited to the same number of screws that are screwed in from the top and bottom surfaces as in the above form, and if sufficient joint strength can be secured, the number of one surface can be reduced, A long wood screw can be screwed in from only the surface or can be changed as appropriate. Of course, nails, bolts, nuts, and the like can also be used as a joint tool in addition to wood screws.

図6は、両管共に一対の連結板を採用した制震ダンパー5aを示すもので、先の形態と同じ構成部には同じ符号を付して重複する説明は省略する。
ここに示すダンパー部6においては、内管9における延長木材7Bの接合側の端部に、短軸方向で対向する一対の連結板27,27が延設されて、両連結板27,27の間に、長軸方向の両端を開放し、延長木材7Bが差し込み可能な接合部28を形成している。この連結板27は、延長木材7Bの幅及び厚みに合わせて、根元部分が短軸及び長軸の両方向においてテーパ状となっている。また、延長木材7Bの突出部29は、内管9内を通って先端が外管8内に達する幅の小さいほぞ状に形成されて、木ねじ25は突出部29にもねじ込まれている。
FIG. 6 shows a vibration damper 5a that employs a pair of connecting plates for both pipes. The same components as those in the previous embodiment are assigned the same reference numerals, and redundant descriptions are omitted.
In the damper portion 6 shown here, a pair of connecting plates 27, 27 facing in the minor axis direction are extended at the end of the inner tube 9 on the joining side of the extended wood 7 </ b> B. In the middle, both ends in the major axis direction are opened, and a joint portion 28 into which the extended wood 7B can be inserted is formed. In the connecting plate 27, the root portion is tapered in both the short axis and long axis directions in accordance with the width and thickness of the extended wood 7B. Further, the protruding portion 29 of the extended wood 7B is formed in a tenon shape having a small width so that the tip passes through the inner tube 9 and reaches the outer tube 8, and the wood screw 25 is also screwed into the protruding portion 29.

一方、ここでの外管8の連結板15,15は羽子板状でなく、外管8の半割金具11と同じ幅で延設されて、木ねじ24は突出部22にもねじ込まれている。
なお、この変更例においても、延長木材7の長さL1、延長木材7とダンパー部6とのオーバーラップ部分L2、木ねじ24,25の両端間距離L3の関係は先の形態と同様の設定となっている。
従って、この変更例であっても、高い回転剛性が確保できて座屈に強い構造となるため、信頼性が向上する。また、短時間で簡単に取り付けでき、施工性に優れるという、上記形態と同じ効果を得ることができる。
On the other hand, the connecting plates 15, 15 of the outer tube 8 here are not in the form of a battledore, but extend with the same width as the half metal fitting 11 of the outer tube 8, and the wood screw 24 is also screwed into the protruding portion 22.
Also in this modified example, the relationship between the length L1 of the extended wood 7, the overlap portion L2 between the extended wood 7 and the damper portion 6, and the distance L3 between both ends of the wood screws 24 and 25 is the same as the previous embodiment. It has become.
Therefore, even in this modified example, a high rotational rigidity can be secured and the structure is strong against buckling, so that the reliability is improved. Moreover, the same effect as the said form of being able to attach easily in a short time and being excellent in workability can be acquired.

その他、ダンパー部の外管及び内管は、横断面長円形の管体に限らず、横断面楕円や円形、正方形や多角形等の他の断面形状の管体を使用しても差し支えない。これは延長木材の横断面形状についても同様である。また、外管は一対の半割金具同士をリベット接合や溶接によって形成してもよいし、内管のように一つの管体で形成しても良い。逆に内管を一対の半割金具同士の接合によって形成することもできる。
そして、本発明は、土台と梁とが横架材となる一階の軸組に限らず、上下の梁が横架材となる二階以上の軸組においても採用可能である。
In addition, the outer tube and the inner tube of the damper portion are not limited to a tube having an elliptical cross section, and other cross sectional shapes such as an ellipse, a circle, a square, or a polygon may be used. The same applies to the cross-sectional shape of the extended wood. In addition, the outer pipe may be formed by rivet joining or welding between a pair of half metal fittings, or may be formed by a single tubular body like the inner pipe. Conversely, the inner tube can also be formed by joining a pair of half metal fittings.
The present invention is not limited to the first-floor shaft assembly in which the foundation and the beam serve as horizontal members, but can also be used in a second or higher shaft assembly in which the upper and lower beams serve as horizontal members.

軸組の正面図である。It is a front view of a shaft set. 制震ダンパーの説明図で、(A)が平面、(B)が正面、(C)がA−A線断面を夫々示す。It is explanatory drawing of a damping damper, (A) is a plane, (B) is a front, (C) shows an AA line cross section, respectively. 外管の半割金具の説明図で、(A)が平面、(B)が正面、(C)がB−B線断面、(D)がC矢視を夫々示す。It is explanatory drawing of the half metal fittings of an outer pipe, (A) is a plane, (B) is a front, (C) is a BB line cross section, (D) shows C arrow view, respectively. 内管の説明図で、(A)が平面、(B)が正面、(C)が小孔位置のみを反対側とした正面、(D)がD矢視、(E)がE矢視を夫々示す。It is explanatory drawing of an inner pipe, (A) is a plane, (B) is a front, (C) is the front which made only the small hole position the other side, (D) is D arrow view, (E) is E arrow view. Each one is shown. (A)は外管との接合側の延長木材の説明図で、上が平面、下が正面を夫々示し、(B)は内管との接合側の延長木材の説明図で、上が平面、下が正面を夫々示す。(A) is an explanatory view of the extended wood on the joining side with the outer tube, the upper side is a plane, the lower side is a front view, and (B) is an explanatory view of the extended wood on the joining side with the inner tube, the upper side is a flat surface The bottom shows the front. 制震ダンパーの変更例の説明図で、(A)が平面、(B)が正面を夫々示す。It is explanatory drawing of the example of a change of a damping damper, (A) shows a plane and (B) shows a front, respectively.

符号の説明Explanation of symbols

1・・軸組、2・・土台、3・・柱、4・・梁、5,5a・・制震ダンパー、6・・ダンパー部、7(7A,7B)・・延長木材、8・・外管、9・・内管、10・・粘弾性体、11・・半割金具、15,27・・連結板、16,19,28・・接合部、17,21・・小孔、22,23,29・・突出部、24,25・・木ねじ、26・・ブラケット。   1 ・ ・ Frames, 2 ・ ・ Base, 3 ・ ・ Columns, 4 ・ ・ Beam, 5, 5a ・ ・ Vibration control damper, 6 ・ ・ Damper part, 7 (7A, 7B) ・ ・ Extension wood, 8 ・ ・Outer tube, 9 ·· Inner tube, 10 ·· Viscoelastic body, 11 ·· Half metal fitting, 15, 27 ·· Connecting plate, 16, 19, 28 ·· Joint portion, 17, 21 ·· Small hole, 22 .., 23, 29 .. Projection, 24, 25 .. Wood screw, 26 .. Bracket.

Claims (4)

外管と、その外管に同軸で部分的に遊挿される内管と、両管の重合部間にあって前記両管との対向面が夫々接着される粘弾性体とからなるダンパー部を有し、木造建築物の軸組内へブレース状に架設されて、前記軸組の変形に伴う前記外管と内管との相反する軸方向への動作により、前記粘弾性体を剪断変形させて減衰作用を生じさせる制震ダンパーであって、
前記ダンパー部の軸方向両端となる前記外管及び内管の端部に設けた接合部に、軸状の延長木材を同軸で夫々差し込み接合して、両端の前記延長木材を介して前記軸組内に架設可能とすると共に、前記延長木材に、前記接合部を越えて両管の重合部側へ突出し、管の内面に当接する突出部を形成したことを特徴とする制震ダンパー。
It has a damper portion comprising an outer tube, an inner tube that is partially loosely inserted coaxially with the outer tube, and a viscoelastic body that is located between the overlapping portions of both tubes and to which the opposing surfaces of the two tubes are respectively bonded. Braided into the frame of a wooden building, and attenuated by shearing deformation of the viscoelastic body by the opposite axial movements of the outer tube and the inner tube accompanying the deformation of the shaft A damping damper that produces an effect,
Axial extension wood is coaxially inserted and joined to the joints provided at the ends of the outer tube and the inner tube at both ends of the damper portion in the axial direction, and the shaft assembly is inserted via the extension wood at both ends. A vibration damping damper characterized in that it can be installed inside, and a protruding portion that protrudes toward the overlapping portion side of both tubes beyond the joint portion and contacts the inner surface of the tube is formed on the extended wood .
前記延長木材が前記外管及び内管よりも横断面形状が大きいものにあっては、前記接合部を、前記延長木材の差し込み端部に合わせて拡開させたことを特徴とする請求項1に記載の制震ダンパー。   2. If the extended wood has a larger cross-sectional shape than the outer tube and the inner tube, the joint portion is expanded in accordance with the insertion end portion of the extended wood. Damping damper described in 1. 前記接合部を、前記延長木材の差し込み端部が間に差し込まれる一対の連結板としたことを特徴とする請求項1又は2に記載の制震ダンパー。   The damping damper according to claim 1 or 2, wherein the joint portion is a pair of connecting plates into which insertion end portions of the extended wood are inserted. 前記接合部と、その接合部に差し込まれた前記延長木材の差し込み端部とを、両者のオーバーラップ部分に設けられる複数の接合具によって接合する構造とし、前記延長木材の軸方向長さをL1、ダンパー軸方向での前記オーバーラップ部分の長さをL2、前記オーバーラップ部分におけるダンパー軸方向での接合具の両端間距離をL3として、
L2/L1≧0.15、且つ、L3/L2≧0.5
の関係を満足させることを特徴とする請求項1乃至の何れかに記載の制震ダンパー。
The joint and the insertion end of the extended wood inserted into the joint are structured to be joined by a plurality of joints provided at the overlapping portions of the joints, and the axial length of the extended wood is L1. The length of the overlap portion in the damper axis direction is L2, and the distance between both ends of the connector in the damper axis direction in the overlap portion is L3,
L2 / L1 ≧ 0.15 and L3 / L2 ≧ 0.5
The vibration control damper according to any one of claims 1 to 3 , wherein the relationship is satisfied.
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