JP4151146B2

JP4151146B2 - Air supply damper

Info

Publication number: JP4151146B2
Application number: JP02313999A
Authority: JP
Inventors: 貴史長谷川; 建一入内島
Original assignee: Oiles Eco Corp
Current assignee: Oiles Eco Corp
Priority date: 1999-01-29
Filing date: 1999-01-29
Publication date: 2008-09-17
Anticipated expiration: 2019-01-29
Also published as: JP2000220884A

Description

【０００１】
【発明の属する技術分野】
本発明は、事務所ビル、集合住宅、戸建住宅、倉庫等の室内と室外との通気のために、これらの壁等に取り付けて通気の程度を制御する給気ダンパに関する。
【０００２】
【発明が解決しようとする課題】
通常、この種の給気ダンパでは、通路を規定するフレーム内にフィンが回転自在に配され、フィンの回転により通路の開度を決定して、通路を介する通気の程度を制御するようにしている。
【０００３】
ところで、給気ダンパでは、フレームに対してフィンを回転させるために、通路を規定するフレームの左右側壁とこの左右側壁に対面するフィンの端面との間に若干の隙間を形成しておくが、この隙間は、フィンによる通路の閉塞状態でも閉じられることがなく、したがって、閉塞状態でも隙間を介してなお通気が行われて、完全閉塞状態を実現でき難い。
【０００４】
この隙間をなくすために、クリアランスなしでフレームの左右側壁とフィンの夫々の端面とを互いに対面させると、温度変化による伸縮等でフレームの左右側壁とフィンの夫々の端面とが常時当接して、フィンの回転が阻害されたり、異音が生じたりし、更には、フレームを損傷させる虞もある。
【０００５】
本発明は、前記諸点に鑑みてなされたものであって、その目的とするところは、完全閉塞状態を実現できて、通気の程度を好ましく制御でき、しかも、温度変化による伸縮等でも異常が生じ難い給気ダンパを提供することにある。
【０００６】
【課題を解決するための手段】
本発明の第一の態様の給気ダンパは、入口孔及び出口孔を有すると共に、この入口孔及び出口孔を連通する通路を内部に有したフレーム手段と、通路を開閉するようにフレーム手段内に配されたフィンと、このフィンを支持しており、当該フィンを回転させると共に、この回転で当該フィンに軸方向の移動を生起させる回転移動手段とを具備しており、この給気ダンパにおいて、フレーム手段は、通路を規定するように、軸方向において互いに対向して配された左右側壁部材を具備しており、左右側壁部材のうちの一方の側壁部材は、当該側壁部材側に位置するフィンの一方の端面に対面して弾性閉塞部材を有しており、フィンの一方の端面は、回転移動手段によりフィンが通路を閉塞するように回転され且つ軸方向に移動されて通路を完全閉塞する手前で、弾性閉塞部材に当接するようになっている。
【０００７】
第一の態様の給気ダンパでは、フィンに軸方向の移動を生起させる回転移動手段が設けられ、左右側壁部材のうちの一方の側壁部材が、当該側壁部材側に位置するフィンの一方の端面に対面して弾性閉塞部材を有し、回転移動手段によりフィンが通路を閉塞するように回転され且つ軸方向に移動されて通路を完全閉塞する手前で、フィンの一方の端面が弾性閉塞部材に当接するようになっているために、フィンによる通路の完全閉塞において、一方の側壁部材とフィンの一方の端面との間に隙間を生じさせることがなく、これら一方の側壁部材とフィンの一方の端面とをぴったりと接触させることができ、而して、実質的に通路の完全閉塞状態を実現でき、しかも、通路の開放時には、一方の側壁部材とフィンの一方の軸方向端面との間に所望の隙間を確保できるために、温度変化による伸縮等でも異常を生じさせないようにできる。
【０００８】
本発明の第二の態様の給気ダンパでは、第一の態様の給気ダンパにおいて、回転移動手段は、フィンを回転させる回転装置と、フィンの回転に応じてフィンに軸方向の移動を生起させる移動装置とを具備している。
【０００９】
第二の態様の給気ダンパによれば、フィンの軸方向移動がフィンの回転に同期して行われるために、フィンの一方の端面の弾性閉塞部材への当接を、フィンの一定の回転角で常に生じさせることができ、実質的な通路の完全閉塞状態を誤りなく行い得る。
【００１０】
本発明の第三の態様の給気ダンパでは、第二の態様の給気ダンパにおいて、回転装置は、電動モータと、フィンが取り付けられており、軸方向に移動自在であって回転自在な回転軸と、電動モータの出力回転軸の回転を回転軸に伝達するために、電動モータの出力回転軸と回転軸との間に介在された回転伝達機構とを具備しており、回転伝達機構は、回転軸の軸方向移動を許容する許容機構を具備している。
【００１１】
回転伝達機構は、許容機構に加えて、電動モータの出力回転軸の回転を減速するギヤ機構からなる減速機、電動モータの出力回転軸の回転の出力方向を変更する方向変更機構等を具備していてもよく、この場合には、電動モータの出力回転軸の回転は、減速機、方向変更機構を介して回転軸に伝達され、許容機構は、好ましくは、減速機又は方向変更機構の出力回転軸とフィンが取り付けられる回転軸との間に介在される。
【００１２】
本発明の第四の態様の給気ダンパでは、第三の態様の給気ダンパにおいて、許容機構は、一端が電動モータの出力回転軸側に固定されており、他端が回転軸側に固定されており、回転軸の移動において伸縮すると共に、電動モータの出力回転軸側の回転を回転軸側に伝達する捩りコイルばねを具備している。
【００１３】
第四の態様の給気ダンパによれば、許容機構が、捩りコイルばねを具備しているために、弾性閉塞部材へのフィンの一方の端面の当接に際して、捩りコイルばねの縮径又は拡径により、電動モータの出力回転軸側から回転軸への回転が適度に低減され、而して、フィンの一方の端面が過度に弾性閉塞部材に押し付けられることを防ぎ得、弾性閉塞部材の損壊を防止できる。
【００１４】
本発明の第五の態様の給気ダンパでは、第二から第四の態様のいずれかの給気ダンパにおいて、移動装置は、フレーム手段に固定されて配された螺旋溝又は突起と、この螺旋溝又は突起に係合して回転装置に配された突起又は螺旋溝とを具備している。
【００１５】
このような突起又は螺旋溝は、好ましくは雌ねじと雄ねじとの組み合わせで具体化でき、雌ねじと雄ねじとのねじピッチを適宜選択することにより、移動装置によるフィンの単位回転あたりのその軸方向移動量を所望に設定することができる。
【００１６】
本発明の第六の態様の給気ダンパは、第一から第五の態様のいずれかの給気ダンパにおいて、フィンの他方の軸方向端面側に位置する他方の側壁部材の開口を閉塞する閉塞手段を更に具備している。
【００１７】
第六の態様の給気ダンパによれば、フィンの他方の端面側にも閉塞手段が設けられているために、ここにおいても実質的に通路の完全閉塞状態を実現でき、しかも、通路の開放時には、他方の側壁部材とフィンの他方の端面との間に所望の隙間を確保できるために、温度変化による伸縮等でも異常を生じさせない。
【００１８】
本発明の第七の態様の給気ダンパでは、第六の態様の給気ダンパにおいて、閉塞手段は、他方の側壁部材に、フィンの回転軸心と同心に且つ軸方向に突出して設けられた固定環状突起部と、この固定環状突起に摺動自在に接触して、フィンの回転軸心と同心に且つ軸方向に突出した可動環状突起部を有して、回転移動手段に設けられた閉塞板とを具備している。
【００１９】
第七の態様の給気ダンパにおいて、両環状突起部のいずれか一方を弾性部材で形成してもよく、環状突起部を弾性部材で形成すると、両環状突起部をぴったりと摺動自在に接触でき、密閉性を更に向上できる。フィンの他方の端面側にも閉塞手段が設けられているために、ここにおいても実質的に通路の完全閉塞状態を実現でき、しかも、通路の開放時には、他方の側壁部材とフィンの他方の端面との間に所望の隙間を確保できるために、温度変化による伸縮等でも異常を生じさせない。
【００２０】
【発明の実施の形態】
次に本発明及びその実施の形態を、図に示す好ましい例を参照して更に詳細に説明する。なお、本発明はこの例に何等限定されないのである。
【００２１】
図１から図４において、本例の給気ダンパ１は、入口孔２及び出口孔３を有すると共に、入口孔２及び出口孔３を連通する通路４を内部に有したフレーム手段５と、通路４を開閉するようにフレーム手段５内に配された中空体のフィン６と、フィン６を支持しており、当該フィン６をＲ方向に回転させると共に、この回転で当該フィン６に軸方向Ａの移動を生起させる回転移動手段７とを具備している。
【００２２】
フレーム手段５は、通路を規定する左右側壁部材１１及び１２並びに上下側壁部材１３及び１４と、左側壁部材１１に固着されたブラケット１５とを具備しており、これら側壁部材は、図示しないが、ねじ、溶接又は嵌合等の適宜な手段により互いに連結されて一体化されている。左右側壁部材１１及び１２は、軸方向Ａにおいて互いに対向して配され、上下側壁部材１３及び１４は、軸方向Ａに直交する方向において互いに対向して配されている。
【００２３】
左右側壁部材１１及び１２のうちの一方の側壁部材、本例では、側壁部材１２は、一端面開放の中空の側壁部材本体２１と、一端面開放側における側壁部材本体２１にねじ、溶接等により固着されており、中央に、フィン６の径よりも若干大きな径を有した円形開口２２が形成された蓋板２３と、蓋板２３又は側壁部材本体２１にねじ、溶接等により固着されたブラケット２４と、ブラケット２４に接着剤又はねじ等により固着されており、側壁部材１２側に位置するフィン６の一方の端面２５に対面して配されたゴム等からなる弾性閉塞部材２６とを有している。
【００２４】
左右側壁部材１１及び１２のうちの他方の側壁部材、本例では、側壁部材１１は、側壁部材１２と同様に、一端面開放の中空の側壁部材本体３１と、一端面開放側における側壁部材本体３１にねじ、溶接等により固着されており、中央に、フィン６の径よりも若干大きな径を有した円形開口３２が形成された蓋板３３とを具備している。
【００２５】
上下側壁部材１３及び１４の夫々は、軸方向Ａ両端において開放された中空体からなり、上側壁部材１３は、その下板部３５に軸方向Ａに伸びて段部３６が形成されており、段部３６には、シール部材３７が嵌着されており、通路４の閉塞時に、段部３６のシール部材３７にフィン６の一方の縁部３８が当接するようになっており、下側壁部材１４は、上側壁部材１３と同様に、その上板部３９に軸方向Ａに伸びて段部４０が形成されており、段部４０にシール部材４１が嵌着されており、通路４の閉塞時に、段部４０のシール部材４１にフィン６の他方の縁部４２が当接するようになっている。
【００２６】
回転移動手段７は、フィン６を回転させる回転装置５１と、フィン６のＲ方向の回転に応じてフィン６に軸方向Ａの移動を生起させる移動装置５２とを具備している。
【００２７】
回転装置５１は、電動モータ５３と、フィン６を支持するように当該フィン６が取り付けられており、軸方向Ａに移動自在に且つＲ方向に回転自在となるように軸受５４及び５５を介して左右側壁部材１１及び１２に両端部５６及び５７で支持された回転軸５８と、電動モータ５３の出力回転軸（図示せず）の回転を回転軸５８に伝達するために、電動モータ５３の出力回転軸と回転軸５８との間に介在された回転伝達機構６０とを具備している。
【００２８】
回転軸５８の端部５７は、軸方向Ａに移動自在に且つＲ方向に回転自在となるように、ブラケット２４及び弾性閉塞部材２６を貫通している。
【００２９】
回転伝達機構６０は、電動モータ５３の出力回転軸の回転を減速する減速機６１と、減速機６１の出力回転軸６２の回転出力方向を変更する、傘歯車、ピニオンなどからなる方向変更機構６３と、回転軸５８の軸方向Ａの移動を許容する許容機構６４とを具備している。電動モータ５３、減速機６１及び方向変更機構６２は、適宜の支持部材を介してブラケット１５に支持、固定されている。
【００３０】
許容機構６４は、一端６５が電動モータの出力回転軸側、本例では、方向変更機構６３の出力回転軸６６に固定されており、他端６７が回転軸５８の端部５６に固定されており、回転軸５８のＡ方向の移動において伸縮すると共に、方向変更機構６３の出力回転軸６６のＲ方向の回転を回転軸５８に伝達する捩りコイルばね６９を具備している。捩りコイルばね６９の各端６５及び６７は、溶接、ねじ等により出力回転軸６６及び回転軸５８に夫々固着されている。
【００３１】
移動装置５２は、フレーム手段５の側壁部材本体３１に固定されて配された雌ねじ部材７１と、雌ねじ部材７１に形成された螺旋溝としての雌ねじ７２に係合、本例では螺合して回転装置５１の回転軸５８の端部５６に形成されて配された突起としての雄ねじ７３とを具備している。移動装置５２は、回転軸５８の回転おいて雌ねじ７２と雄ねじ７３との螺合で回転軸５８を軸方向Ａに移動させるようになっている。
【００３２】
本例の給気ダンパ１は、上記の構成に加えて、更に、フィン６の他方の端面７５側に位置する側壁部材１１の蓋板３３の円形開口３２を閉塞する閉塞手段７６と、防虫金網７８及び７９とを具備している。
【００３３】
閉塞手段７６は、フィン６の回転軸心と同心に且つ軸方向Ａに突出した固定環状突起部８１を有して、側壁部材１１の蓋板３３に溶接、ねじ等により固着して設けられた環状部材８２と、内周面で環状突起８１の外周面に軸方向Ａに且つＲ方向に摺動自在に接触し且つ軸方向Ａに突出した可動環状突起部８３を有して、回転移動手段７に設けられた閉塞板手段８４とを具備している。
【００３４】
環状部材８２は、その中央に、フィン６の径と同一の径を有した円形開口８５を有しており、フィン６は、円形開口８５を通って伸びており、閉塞板手段８４は、その中央で回転軸５８に溶接等により固着された円板８６と、円板８６に接着剤等により固着されて、外周縁に可動環状突起部８３を一体的に有したゴム等からなる弾性部材８７とを具備している。
【００３５】
閉塞手段７６は、固定環状突起部８１と可動環状突起部８３との互いの摺動自在接触により蓋板３３の円形開口３２を外部に対して閉塞している。
【００３６】
防虫金網７８及び７９は夫々、入口孔２及び出口孔３に配されて、ねじ８８により上下側壁部材１３及び１４の夫々に固定されている。
【００３７】
以上の給気ダンパ１では、電動モータ５３が作動されて、その出力回転軸が回転されると、この回転は、減速機６１、方向変更機構６３及び捩りコイルばね６９を介して回転軸５８にＲ方向の回転として伝達され、回転軸５８に支持されたフィン６は、通路４を開閉するようにＲ方向に回転される。
【００３８】
給気ダンパ１において、フィン６が通路４を閉鎖するように回転される際には、回転軸５８は、雌ねじ７２と雄ねじ７３との螺合作用で側壁部材１２側に移動され、而して、フィン６の端面２５は、当該フィン６が通路４を完全閉塞する手前で、弾性閉塞部材２６を若干押圧して当接するようになり、一方、フィン６が通路４を開通するように回転される際には、回転軸５８は、雌ねじ７２と雄ねじ７３との螺合作用で側壁部材１１側に移動され、而して、フィン６の端面２５と弾性閉塞部材２６との当接が解除されて、フィン６の端面２５と弾性閉塞部材２６との間に若干の隙間が生じるようになる。
【００３９】
なお、給気ダンパ１においては、フィン６がいずれの方向に回転される場合でも、固定環状突起部８１と可動環状突起部８３との互いの摺動自在な接触は、常時維持されるようになっている。
【００４０】
給気ダンパ１によれば、以上のように、回転移動手段７が設けられ、側壁部材１２が弾性閉塞部材２６を有し、フィン６の端面２５が当該フィン６による通路４の完全閉塞手前で、弾性閉塞部材２６に当接するようになっているために、フィン６による通路４の完全閉塞において、側壁部材１２とフィン６の端面２５との間に隙間を生じさせることがなく、これら側壁部材１２とフィン６の端面２５とをぴったりと接触させることができ、而して、実質的に通路４の完全閉塞状態を実現でき、しかも、通路４の開放時には、側壁部材１２とフィン６の端面２５との間に所望の隙間を確保できるために、温度変化による伸縮等でも異常を生じさせないようにできる。
【００４１】
また、給気ダンパ１においては、フィン６の軸方向移動がフィン６の回転に同期して行われるために、フィン６の端面２５の弾性閉塞部材２６への当接を、フィン６の一定の回転角で常に生じさせることができ、実質的な通路４の完全閉塞状態を誤りなく行い得、しかも、捩りコイルばね６９からなる許容機構６４を具備しているために、弾性閉塞部材２６へのフィン６の端面２５の当接に際して、捩りコイルばね６９の縮径又は拡径により、電動モータ５３の出力回転軸側から回転軸５８への回転が適度に低減され、而して、フィン６の端面２５が過度に弾性閉塞部材２６に押し付けられることを防ぎ得、弾性閉塞部材２６の損壊を防止できる。
【００４２】
加えて、給気ダンパ１においては、フィン６の端面７５側にも閉塞手段７６が設けられているために、ここにおいても実質的に通路４の完全閉塞状態を実現でき、しかも、通路４の開放時には、側壁部材１１とフィンの端面７５との間に所望の隙間を確保できるために、温度変化による伸縮等でも異常を生じさせない上に、閉塞手段７６において環状突起部８３を弾性部材で形成しているために、環状突起部８１及び８３をぴったりと摺動自在に接触でき、密閉性を更に向上できる。
【００４３】
【発明の効果】
本発明によれば、完全閉塞状態を実現できて、通気の程度を好ましく制御でき、しかも、温度変化による伸縮等でも異常が生じ難い給気ダンパを提供することができる。
【図面の簡単な説明】
【図１】本発明の好ましい実施の形態の一例の横断面図である。
【図２】図１に示す例の縦断面図である。
【図３】図１に示す例の斜視図である。
【符号の説明】
１給気ダンパ
２入口孔
３出口孔
４通路
５フレーム手段
６フィン
７回転移動手段
１１、１２側壁部材
２６弾性閉塞部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air supply damper that is attached to a wall or the like to control the degree of ventilation for ventilation between indoors and outdoors such as office buildings, apartment houses, detached houses, and warehouses.
[0002]
[Problems to be solved by the invention]
Usually, in this type of air supply damper, fins are rotatably arranged in a frame defining the passage, and the degree of ventilation through the passage is controlled by determining the opening degree of the passage by rotation of the fin. Yes.
[0003]
By the way, in the air supply damper, in order to rotate the fin with respect to the frame, a slight gap is formed between the left and right side walls of the frame defining the passage and the end surfaces of the fins facing the left and right side walls. This gap is not closed even in the closed state of the passage by the fins. Therefore, ventilation is still performed through the gap even in the closed state, and it is difficult to realize a completely closed state.
[0004]
In order to eliminate this gap, when the left and right side walls of the frame and the end surfaces of the fins face each other without clearance, the left and right side walls of the frame and the end surfaces of the fins always come into contact with each other due to expansion and contraction due to temperature change, There is a possibility that the rotation of the fins is hindered, abnormal noise is generated, and further, the frame is damaged.
[0005]
The present invention has been made in view of the above-mentioned points, and the object of the present invention is to realize a completely closed state, to preferably control the degree of ventilation, and to cause abnormalities in expansion and contraction due to temperature changes. It is to provide a difficult air supply damper.
[0006]
[Means for Solving the Problems]
The air supply damper according to the first aspect of the present invention has an inlet hole and an outlet hole, a frame means having a passage communicating with the inlet hole and the outlet hole, and a frame means inside the frame means so as to open and close the passage. And a rotation moving means for supporting the fin, rotating the fin, and causing the fin to move in the axial direction by the rotation. The frame means includes left and right side wall members arranged opposite to each other in the axial direction so as to define a passage, and one of the left and right side wall members is located on the side wall member side. One end surface of the fin has an elastic closing member facing one end surface of the fin, and the one end surface of the fin is rotated so that the fin closes the passage by the rotation moving means and is moved in the axial direction to complete the passage. In front of busy, so as to abut against the elastic closing member.
[0007]
In the air supply damper according to the first aspect, the fin is provided with rotational movement means for causing axial movement, and one of the left and right side wall members is one end face of the fin located on the side wall member side. The end face of the fin becomes an elastic closing member just before the passage is rotated by the rotation moving means so as to close the passage and is axially moved to completely close the passage. Therefore, in the complete blockage of the passage by the fin, there is no gap between one side wall member and one end surface of the fin, and one of the one side wall member and the fin is not closed. The end face can be brought into close contact with each other, so that a substantially completely closed state of the passage can be realized, and when the passage is opened, between one side wall member and one axial end face of the fin. Place To gap can be secured in the can so as not to cause abnormalities in expansion and contraction due to temperature change.
[0008]
In the air supply damper according to the second aspect of the present invention, in the air supply damper according to the first aspect, the rotational movement means causes a rotation device that rotates the fin and axial movement of the fin in accordance with the rotation of the fin. Moving device.
[0009]
According to the air supply damper of the second aspect, since the axial movement of the fin is performed in synchronization with the rotation of the fin, the contact of the one end surface of the fin with the elastic closing member is performed at a constant rotation of the fin. It can always occur at the corners, and a substantial complete blockage of the passageway can be performed without error.
[0010]
In the air supply damper according to the third aspect of the present invention, in the air supply damper according to the second aspect, the rotating device is mounted with an electric motor and fins, and is rotatable in the axial direction so as to be rotatable. And a rotation transmission mechanism interposed between the output rotation shaft of the electric motor and the rotation shaft for transmitting the rotation of the output rotation shaft of the electric motor to the rotation shaft. And an allowance mechanism for allowing the rotation shaft to move in the axial direction.
[0011]
The rotation transmission mechanism includes, in addition to the allowance mechanism, a speed reducer including a gear mechanism that decelerates the rotation of the output rotation shaft of the electric motor, a direction changing mechanism that changes the output direction of the rotation of the output rotation shaft of the electric motor, and the like. In this case, the rotation of the output rotation shaft of the electric motor is transmitted to the rotation shaft via the speed reducer and the direction changing mechanism, and the allowable mechanism is preferably the output of the speed reducer or the direction changing mechanism. It is interposed between the rotating shaft and the rotating shaft to which the fin is attached.
[0012]
In the air supply damper according to the fourth aspect of the present invention, in the air supply damper according to the third aspect, one end of the permissive mechanism is fixed to the output rotating shaft side of the electric motor, and the other end is fixed to the rotating shaft side. And a torsion coil spring that expands and contracts in the movement of the rotating shaft and transmits the rotation of the electric motor on the output rotating shaft side to the rotating shaft side.
[0013]
According to the air supply damper of the fourth aspect, since the permissible mechanism includes the torsion coil spring, when the one end face of the fin comes into contact with the elastic closing member, the diameter of the torsion coil spring is reduced or increased. Depending on the diameter, rotation from the output rotating shaft side of the electric motor to the rotating shaft is moderately reduced, and thus it is possible to prevent one end face of the fin from being excessively pressed against the elastic closing member, Can be prevented.
[0014]
In the air supply damper according to the fifth aspect of the present invention, in the air supply damper according to any one of the second to fourth aspects, the moving device includes a spiral groove or a protrusion arranged and fixed to the frame means, and the spiral. And a protrusion or a spiral groove disposed on the rotating device by engaging with the groove or protrusion.
[0015]
Such protrusions or spiral grooves can preferably be embodied by a combination of a female screw and a male screw, and by appropriately selecting the screw pitch between the female screw and the male screw, the amount of axial movement per unit rotation of the fin by the moving device Can be set as desired.
[0016]
The air supply damper according to the sixth aspect of the present invention is the air supply damper according to any one of the first to fifth aspects, wherein the air supply damper closes the opening of the other side wall member located on the other axial end face side of the fin. Means are further provided.
[0017]
According to the air supply damper of the sixth aspect, since the closing means is also provided on the other end face side of the fin, the passage can be substantially completely closed also in this case, and the passage is opened. Sometimes, since a desired gap can be secured between the other side wall member and the other end face of the fin, no abnormality is caused even by expansion and contraction due to a temperature change.
[0018]
In the air supply damper of the seventh aspect of the present invention, in the air supply damper of the sixth aspect, the closing means is provided on the other side wall member so as to be concentric with the rotation axis of the fin and project in the axial direction. A closed annular projection having a movable annular projection that is slidably in contact with the fixed annular projection and projecting in the axial direction concentrically with the rotation axis of the fin, and provided in the rotational movement means Board.
[0019]
In the air supply damper according to the seventh aspect, either one of the annular protrusions may be formed of an elastic member, and when the annular protrusion is formed of an elastic member, the both annular protrusions are slidably in contact with each other. This can further improve the sealing performance. Since the closing means is also provided on the other end face side of the fin, the passage can be substantially completely closed here, and when the passage is opened, the other side wall member and the other end face of the fin are provided. Since a desired gap can be secured between them, no abnormality is caused even by expansion and contraction due to temperature change.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention and its embodiments will be described in more detail with reference to preferred examples shown in the drawings. The present invention is not limited to this example.
[0021]
1 to 4, an air supply damper 1 of this example includes an inlet hole 2 and an outlet hole 3, and a frame means 5 having a passage 4 communicating with the inlet hole 2 and the outlet hole 3 therein, and a passage The hollow body fin 6 disposed in the frame means 5 so as to open and close 4 and the fin 6 are supported. The fin 6 is rotated in the R direction, and this rotation causes the fin 6 to move in the axial direction A. And a rotational movement means 7 for causing the movement.
[0022]
The frame means 5 includes left and right side wall members 11 and 12 and upper and lower side wall members 13 and 14 that define a passage, and a bracket 15 fixed to the left side wall member 11, and these side wall members are not shown, They are connected and integrated with each other by appropriate means such as screws, welding or fitting. The left and right side wall members 11 and 12 are arranged to face each other in the axial direction A, and the upper and lower side wall members 13 and 14 are arranged to face each other in a direction orthogonal to the axial direction A.
[0023]
One side wall member of the left and right side wall members 11 and 12, in this example, the side wall member 12 is formed by screwing, welding, or the like to the hollow side wall member main body 21 with one end face open and the side wall member main body 21 on the one end face open side. A cover plate 23 having a circular opening 22 having a diameter slightly larger than the diameter of the fin 6 formed in the center, and a bracket fixed to the cover plate 23 or the side wall member body 21 by screws, welding or the like. 24, and an elastic blocking member 26 made of rubber or the like, which is fixed to the bracket 24 with an adhesive or a screw, and is arranged to face one end face 25 of the fin 6 located on the side wall member 12 side. ing.
[0024]
The other side wall member of the left and right side wall members 11 and 12, in this example, the side wall member 11, like the side wall member 12, is a hollow side wall member main body 31 with one end face open, and a side wall member main body on one end face open side. It is fixed to 31 by screws, welding or the like, and has a lid plate 33 formed with a circular opening 32 having a diameter slightly larger than the diameter of the fin 6 at the center.
[0025]
Each of the upper and lower side wall members 13 and 14 is formed of a hollow body opened at both ends in the axial direction A, and the upper side wall member 13 extends in the axial direction A on the lower plate portion 35 to form a step portion 36. A seal member 37 is fitted to the step portion 36, and when the passage 4 is closed, one edge portion 38 of the fin 6 abuts against the seal member 37 of the step portion 36, and the lower wall member 14, similarly to the upper side wall member 13, the upper plate portion 39 extends in the axial direction A to form a stepped portion 40, and the stepped portion 40 is fitted with a seal member 41 to block the passage 4. Sometimes, the other edge 42 of the fin 6 comes into contact with the sealing member 41 of the stepped portion 40.
[0026]
The rotational moving means 7 includes a rotating device 51 that rotates the fin 6 and a moving device 52 that causes the fin 6 to move in the axial direction A in accordance with the rotation of the fin 6 in the R direction.
[0027]
The rotating device 51 is provided with the electric motor 53 and the fin 6 so as to support the fin 6, and is capable of moving in the axial direction A and rotating in the R direction via bearings 54 and 55. In order to transmit the rotation of the rotary shaft 58 supported by the left and right side wall members 11 and 12 at both ends 56 and 57 and the output rotary shaft (not shown) of the electric motor 53 to the rotary shaft 58, the output of the electric motor 53 is output. A rotation transmission mechanism 60 interposed between the rotation shaft and the rotation shaft 58 is provided.
[0028]
An end 57 of the rotating shaft 58 passes through the bracket 24 and the elastic closing member 26 so as to be movable in the axial direction A and rotatable in the R direction.
[0029]
The rotation transmission mechanism 60 is a direction change mechanism 63 composed of a reduction gear 61 that decelerates the rotation of the output rotation shaft of the electric motor 53 and a rotation output direction of the output rotation shaft 62 of the reduction gear 61, such as a bevel gear and a pinion. And an allowance mechanism 64 that allows movement of the rotary shaft 58 in the axial direction A. The electric motor 53, the speed reducer 61, and the direction changing mechanism 62 are supported and fixed to the bracket 15 via an appropriate support member.
[0030]
The allowance mechanism 64 has one end 65 fixed to the output rotation shaft side of the electric motor, in this example, the output rotation shaft 66 of the direction changing mechanism 63, and the other end 67 fixed to the end portion 56 of the rotation shaft 58. A torsion coil spring 69 is provided that expands and contracts in the movement of the rotating shaft 58 in the A direction and transmits the rotation of the output rotating shaft 66 of the direction changing mechanism 63 in the R direction to the rotating shaft 58. The ends 65 and 67 of the torsion coil spring 69 are respectively fixed to the output rotation shaft 66 and the rotation shaft 58 by welding, screws or the like.
[0031]
The moving device 52 is engaged with a female screw member 71 fixedly arranged on the side wall member body 31 of the frame means 5 and a female screw 72 as a spiral groove formed in the female screw member 71, and in this example, the moving device 52 is screwed to rotate. And a male screw 73 as a protrusion formed and arranged at the end portion 56 of the rotating shaft 58 of the device 51. The moving device 52 moves the rotating shaft 58 in the axial direction A by screwing the female screw 72 and the male screw 73 when the rotating shaft 58 rotates.
[0032]
In addition to the above-described configuration, the air supply damper 1 of this example further includes a closing means 76 for closing the circular opening 32 of the lid plate 33 of the side wall member 11 located on the other end face 75 side of the fin 6, and an insect wire mesh 78 and 79.
[0033]
The closing means 76 has a fixed annular protrusion 81 that is concentric with the rotational axis of the fin 6 and protrudes in the axial direction A, and is fixed to the lid plate 33 of the side wall member 11 by welding, screws, or the like. An annular member 82 and a movable annular projection 83 that slidably contacts the outer circumferential surface of the annular projection 81 on the inner circumferential surface in the axial direction A and in the R direction and protrudes in the axial direction A. 7 is provided with closing plate means 84 provided in 7.
[0034]
The annular member 82 has a circular opening 85 having the same diameter as that of the fin 6 at the center thereof, the fin 6 extends through the circular opening 85, and the closing plate means 84 includes A disc 86 fixed to the rotary shaft 58 at the center by welding or the like, and an elastic member 87 made of rubber or the like, which is fixed to the disc 86 with an adhesive or the like and integrally has a movable annular projection 83 on the outer peripheral edge. It is equipped with.
[0035]
The closing means 76 closes the circular opening 32 of the lid plate 33 from the outside by the slidable contact between the fixed annular protrusion 81 and the movable annular protrusion 83.
[0036]
Insect-proof metal meshes 78 and 79 are disposed in the inlet hole 2 and the outlet hole 3, respectively, and are fixed to the upper and lower side wall members 13 and 14 by screws 88.
[0037]
In the air supply damper 1 described above, when the electric motor 53 is operated and its output rotation shaft is rotated, this rotation is transmitted to the rotation shaft 58 via the speed reducer 61, the direction changing mechanism 63 and the torsion coil spring 69. The fin 6 transmitted as the rotation in the R direction and supported by the rotation shaft 58 is rotated in the R direction so as to open and close the passage 4.
[0038]
When the fin 6 is rotated so as to close the passage 4 in the air supply damper 1, the rotating shaft 58 is moved to the side wall member 12 side by the screwing action of the female screw 72 and the male screw 73. The end face 25 of the fin 6 comes into contact with the elastic closing member 26 by slightly pressing the elastic closing member 26 before the fin 6 completely closes the passage 4, while the fin 6 is rotated so as to open the passage 4. When rotating, the rotating shaft 58 is moved to the side wall member 11 side by the screwing action of the female screw 72 and the male screw 73, and thus the contact between the end face 25 of the fin 6 and the elastic closing member 26 is released. Thus, a slight gap is generated between the end face 25 of the fin 6 and the elastic closing member 26.
[0039]
In the air supply damper 1, the slidable contact between the fixed annular protrusion 81 and the movable annular protrusion 83 is always maintained regardless of which direction the fin 6 is rotated. It has become.
[0040]
According to the air supply damper 1, as described above, the rotational movement means 7 is provided, the side wall member 12 has the elastic closing member 26, and the end face 25 of the fin 6 is in front of the passage 4 completely closed by the fin 6. Since the abutment against the elastic closing member 26 is made, the side wall member 12 and the end surface 25 of the fin 6 are not caused to have a gap in the complete closing of the passage 4 by the fin 6. 12 and the end face 25 of the fin 6 can be brought into close contact with each other, and thus the passage 4 can be substantially completely closed, and the side wall member 12 and the end face of the fin 6 can be opened when the passage 4 is opened. Since a desired gap can be ensured between 25 and 25, it is possible to prevent abnormalities from occurring even when the temperature changes.
[0041]
Further, in the air supply damper 1, since the axial movement of the fin 6 is performed in synchronization with the rotation of the fin 6, the contact of the end surface 25 of the fin 6 with the elastic closing member 26 is fixed. It can always occur at the rotation angle, and the substantial complete closing of the passage 4 can be carried out without error, and the tolerance mechanism 64 composed of the torsion coil spring 69 is provided. When the end face 25 of the fin 6 abuts, the torsion coil spring 69 has a reduced or enlarged diameter, so that the rotation of the electric motor 53 from the output rotating shaft side to the rotating shaft 58 is moderately reduced. The end face 25 can be prevented from being excessively pressed against the elastic closing member 26, and the elastic closing member 26 can be prevented from being damaged.
[0042]
In addition, since the air supply damper 1 is also provided with the closing means 76 on the end face 75 side of the fin 6, the complete closing state of the passage 4 can be substantially realized in this case as well. When opening, a desired gap can be secured between the side wall member 11 and the end face 75 of the fin, so that no abnormality is caused even by expansion and contraction due to temperature change, and the annular protrusion 83 is formed by an elastic member in the closing means 76. Therefore, the annular protrusions 81 and 83 can be slidably brought into contact with each other, and the sealing performance can be further improved.
[0043]
【The invention's effect】
According to the present invention, it is possible to provide an air supply damper that can realize a completely closed state, can preferably control the degree of ventilation, and is less likely to cause an abnormality even when it expands or contracts due to a temperature change.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an example of a preferred embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the example shown in FIG.
FIG. 3 is a perspective view of the example shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Supply air damper 2 Inlet hole 3 Outlet hole 4 Passage 5 Frame means 6 Fin 7 Rotation movement means 11 and 12 Side wall member 26 Elastic blocking member

Claims

A frame means having an inlet hole and an outlet hole, and a passage communicating with the inlet hole and the outlet hole therein, a fin disposed in the frame means so as to open and close the passage, and supporting the fin Rotation means for rotating the fin and causing the fin to move in the axial direction by the rotation, and the frame means are opposed to each other in the axial direction so as to define a passage. The left and right side wall members are arranged, and one of the left and right side wall members has an elastic blocking member facing one end surface of the fin located on the side wall member side, One end face of the air supply is rotated by the rotational movement means so that the fin closes the passage and is moved in the axial direction so as to contact the elastic closing member before completely closing the passage. A damper, further comprising to that air supply damper a closing means for closing the opening of the other side wall member located on the other end surface side of the fins.

The air supply damper according to claim 1, wherein the rotation moving means includes a rotation device that rotates the fin and a movement device that causes the fin to move in the axial direction in accordance with the rotation of the fin.

The rotating device is provided with an electric motor, a fin, and a rotation shaft that is movable in the axial direction and rotatable, and the rotation of the output rotation shaft of the electric motor. The rotation transmission mechanism interposed between the output rotation shaft and the rotation shaft is provided, and the rotation transmission mechanism includes an allowance mechanism that allows axial movement of the rotation shaft. Air supply damper.

The allowance mechanism has one end fixed to the output rotation shaft side of the electric motor and the other end fixed to the rotation shaft side, and expands and contracts in the axial movement of the rotation shaft, and the output rotation shaft side of the electric motor. The air supply damper according to claim 3, further comprising a torsion coil spring that transmits the rotation of the rotation to the rotating shaft side.

5. The moving device includes a spiral groove or projection arranged fixedly to the frame means, and a projection or spiral groove arranged on the rotating device by engaging with the spiral groove or projection. The air supply damper according to any one of the above.

The closing means includes a fixed annular protrusion provided on the other side wall member so as to be concentric with the rotation axis of the fin and projecting in the axial direction, and slidably contacting the fixed annular protrusion to rotate the fin. The air supply according to any one of claims 1 to 5, further comprising a closing plate provided on the rotational movement means, having a movable annular protrusion that is concentric with the shaft and protrudes in the axial direction. damper.

A frame means, a fin, a rotational movement means or a closing means used in the air supply damper according to any one of claims 1 to 6.