JP4196600B2

JP4196600B2 - Exhaust fan mounting structure and method

Info

Publication number: JP4196600B2
Application number: JP2002192324A
Authority: JP
Inventors: 均五十嵐; 憲洋中林
Original assignee: Max Co Ltd
Current assignee: Max Co Ltd
Priority date: 2002-07-01
Filing date: 2002-07-01
Publication date: 2008-12-17
Anticipated expiration: 2022-07-01
Also published as: JP2004036946A

Description

【０００１】
【発明の属する技術分野】
本発明は、換気扇を室内壁面に取り付ける換気扇の取付構造及び換気扇の取付方法に関する。
【０００２】
【従来の技術】
従来から、浴室換気扇を取り付ける換気扇の取付構造としては、図７乃至図１０に示すものが知られている。図７乃至図１０に示すものは、浴室換気扇を浴室内から取り付けるものである。
【０００３】
図７において、浴室天井に形成された開口部１には、取付枠２が設置される。浴室天井の開口部上部にある建物の梁等にアンカーボルト（図示せず）を取り付けてある。取付枠２の四隅の取付板部２Ｆの長孔２ＧにはＬ型金具３がボルト・ナット等で取り付けられており、Ｌ型金具３を前記アンカーボルトに挿入してナットにより固定して取付枠２を固定した後に、換気扇本体４を挿入して固定する方法が採られている。
【０００４】
取付枠２は、鉛直方向に延びて矩形の枠体形状を形成する縦板部２Ａと、この縦板部の上縁部に水平方向に延びる上部フランジ部２Ｂとを有しており、上部フランジ部２Ｂにダクトジョイント５〜７及び遮蔽板８が取り付けられる。換気扇本体４は、この矩形の縦板部２Ａの内部に挿入され、換気扇本体４のフランジ９の孔にネジ１０〜１３を通し、ネジ１０〜１３を縦板部２Ａの下部フランジ２Ｃにネジ止めして取り付けられる。
【０００５】
図１０に示すように、ダクトジョイント５の縦板部５Ａの左右端部には、取付枠２のフランジ２Ｂに支持される側板部５Ｂが形成されており、側板部５Ｂには、掛止孔５Ｃが開口されている。また、取付枠２の上部フランジ２Ａには側板部５Ｂの掛止孔５Ｃに挿入される掛止突起２Ｄが形成されている。掛止突起２Ｄは、切り欠き孔２Ｅの縁部を起立させたものであり、一対の掛止突起２Ｄによって、ダクトジョイント５を固定する。掛止突起２Ｄは、側板部５Ａの掛止孔５Ｃに挿入された後に側板部５Ａの外側に突出して側板部５Ａを掛止するものであり、一対の掛止突起２Ｄの後部は互いに外側に向かうように曲げられている。
【０００６】
ダクトジョイント５は取付枠２に固定する前に、換気を行う室内天井裏から延びるダクト（図示せず）を円筒部５Ｄに装着し、接着テープによりダクトとダクトジョイント５とを固定するものであり、ダクトを接続したダクトジョイント５は、左右の側板部５Ｂを掛止突起２Ｄに沿って上部フランジ２Ｂに支持させることにより、掛止突起２Ｄが掛止孔５Ｃに入り込んで側板部５Ｂの外側に飛び出し、縦板部２Ａと掛止突起２Ｄにて側板部５Ｂを拘束することにより、取付枠２に固定される。円筒部５Ｄはダクトジョイント５の縦板部５Ａの開口部と連なっており、換気扇本体４の空気出入用の開口部と連通する。
【０００７】
ダクトジョイント５の縦板部５Ａの上部には掛止爪５Ｅが形成されている。掛止爪５Ｅは、換気扇本体４の外側を覆う金属ケースの天井部４Ａに開口した掛止孔４Ｂに挿入して、金属ケースとダクトジョイント５とを接触させる。その他のダクトジョイント６，７も同様な構成を持ち、同様な取付方をするので、その説明を省略する。また、遮蔽板８は送付用の開口部を備えておらず、空気の出入りを禁止する。
【０００８】
【発明が解決しようとする課題】
しかしながら、従来の取付枠２は、浴室内から浴室換気扇を取り付けるために、ダクトジョイント５の掛止爪５Ｅと換気扇本体４の金属ケース４Ａの掛止孔４Ｂとの位置合わせが見えないために、ダクトジョイント５と換気扇本体４の金属ケース４Ａとが隙間なく接触しているかどうかを目視できない。そして、ダクトジョイント５はダクトに接続されるとダクトに引っ張られて傾きやすいので、傾いた状態でダクトジョイント５と換気扇本体４の金属ケース４Ａとが取り付けられてしまうと、換気扇本体４の金属ケース４Ａとダクトジョイント５との間に隙間が生じてしまい、換気扇本体４を駆動すると、その隙間から空気を吸引したり、排気してしまうという不具合が生じることが懸念される。
【０００９】
本発明は、このような問題に着目してなされたものであり、ダクトジョイントと換気扇本体の金属ケースとの間に隙間を生じさせず、確実にダクトジョイントと換気扇本体とを接触させて、給気や排気を確実に行う換気扇の取付構造及び換気扇の取付方法を提供することを目的とする。
【００１０】
【課題を解決するための手段】
上記課題を解決するために、本願の請求項１の換気扇の取付構造は、
室内の壁面に形成された取付開口部に取付枠を設け、この取付枠の奥部にダクトジョイントを取り付け、前記取付枠の内部に換気扇本体を挿入し、該換気扇本体の奥部を前記ダクトジョイントに掛止させる換気扇の取付構造において、
前記取付枠は、前記取付開口部の断面に沿って延びる平板部と、この平板部に形成された掛止開口部と、この平板部の上縁部に形成され側縁部の外側に突出する小突起を有する被掛止突起とを有し、
前記ダクトジョイントは、縦方向に延びる基板部と、該基板部の左右側縁部に形成された掛止部と、前記基板部の下部に形成された爪部とを有し、
前記ダクトジョイントを前記取付枠に取り付けた際に、前記爪部が前記掛止開口に掛止し、前記掛止部が前記被掛止突起に掛止し、前記ダクトジョイントを前記取付枠に保持させることを特徴とする換気扇の取付構造。
【００１５】
【発明の実施の形態】
以下、本願の実施の形態にかかる換気扇の取付構造及び取付方法を図面を用いて説明する。
【００１６】
図１は、本願の実施の形態にかかる換気扇の取付構造の主要部にかかる取付枠とダクトジョイントの取付状態を示す。符号２０は取付枠、符号３０はダクトジョイントであり、符号４Ａは換気扇本体４の金属ケースを示す。なお、金属ケース４Ａは換気扇本体４の一部である。
【００１７】
換気扇本体は金属ケース４Ａの内部に格納されている。また、取付枠２０は浴室の天井部２１に形成された取付開口部２２に浴室内から取り付けられるタイプのものである。取付枠２０は、それぞれ一対の長辺部２３と短辺部２４とを溶接接合して予め矩形に形成されている。長辺部２３と短辺部２４は取付開口部２２の断面に沿って延びる平面板で形成されている。
【００１８】
長辺部２３及び短辺部２４には、それぞれ図１のダクトジョイント３０を取り付けるための一対の被掛止突起２５と掛止開口部２６とを備えている。短辺部２４には、取付開口部２２の縁部に支持されるフランジ２７を備えているが、長辺部２３には取付開口部２２の縁部に支持されるフランジは設けられておらず、軽量化が図られている。長辺部２３の両端部には短辺部２４の接合板部２９が接合されている。また、図１、図３に示すように、長辺部２３の両端部には図７に示したＬ型金具３を取り付けるための取付板部３１が形成され、取付板部３１の下側に短辺部２４のフランジ３２が接合されている。
【００１９】
一対の被掛止突起２５の上部側縁部には、互いに外側に突出する小突起２８が備えられている。一対の被掛止突起２５の間は凹部２５Ａが形成されており、図５に示すように、ダクトジョイント３０を凹部２５Ａに配置できるようになっている。凹部２５Ａの下部には掛止開口部２６が一対形成されている。
【００２０】
ダクトジョイント３０には、縦方向に延びる基板部３３を備えており、基板部３３に接続用の箱形の筒部３４が接合されている。筒部３４の基部３３Ａには小さな突起３５が形成されており、この突起３５が被掛止突起２５の上縁部に接触している。突起３５は被掛止突起２５によって下側に移動することを規制されている。
【００２１】
ダクトジョイント３０の基板部３３の左右側縁部には小突起２８を挿入する第１爪部３６が形成されている。第１爪部３６の上縁部には上部に案内傾斜面３７Ａを備えた溝３７が形成されており、ダクトジョイント３０を取付枠２０の下側から挿入するときに、傾斜面３７Ａが小突起２８を案内して溝３７に保持させ、基板部３３と被掛止突起２５とを近接させる。
【００２２】
ダクトジョイント３０の下部には、掛止開口部２６に挿入する第２爪部３８が形成されている。第２爪部３８は下側から上側に突出するように形成され、第２爪部３８の上縁部に案内傾斜部３８Ａが形成されている。第２爪部３８は掛止開口部２６に挿入されて下側から上側に変位されるときに、掛止開口部２６の上縁部を保持して、ダクトジョイント３０の基板部３３を取付枠２０の短辺部２４に接近させる。ダクトジョイント３０は筒部３４の基部３３Ａを介して被掛止突起２５に接触しており、第１爪部３６及び第２爪部３８並びに突起３５によって取付枠２０の短辺部２４に固定されている。
【００２３】
ダクトジョイント３０の基板部３３の上部には、図７に示す換気扇本体４の金属ケース４Ａに挿入される案内部３９が形成されている。案内部３９は、金属ケース４Ａに形成された被掛止部４１に挿入されてダクトジョイント３０の上部を金属ケース４Ａに近づける。案内部３９は、上側から下側に延びている。案内部３９の下端縁部３９Ａは、基板部３３から離れる方向に傾斜しており、金属ケース４Ａが取付枠２０に挿入されたときに、金属ケース４Ａの被掛止部４１に挿入される。案内部３９は、ダクトジョイント３０を金属ケース４Ａに近づけ、若しくは、被掛止部４１をダクトジョイント３０側に近づけてダクトジョイント３０と換気扇本体４の金属ケース４Ａとを密着させる。
【００２４】
この実施の形態の換気扇の取付構造は、室内の壁面である浴室天井２１に形成された取付開口部２２に取付枠２０を取付け、この取付枠２０の奥部にダクトジョイント３０を取り付け、取付枠２０の内部に換気扇本体４のケース４Ａを挿入し、ケース４Ａの奥部をダクトジョイント３０に掛止させる換気扇の取付構造である。そして、取付枠２０は、取付開口部２２の断面に沿って延びる平板部を備えており、この平板部の奥方の縁部に被掛止突起２５が形成され、被掛止突起２５の基部近傍に掛止開口部２６が形成されている。一方、ダクトジョイント３０には、取付開口部２２の入り口側から被掛止板部２５を挿入してダクトジョイント３０を被掛止板部に近づける第１爪部３６と、取付開口部２２の入り口側から挿入されてダクトジョイント３０を被掛止板部２５に近づける第２爪部３８とが形成されている。ケース４Ａの奥壁部には被掛止部４１が形成されており、ダクトジョイント３０に、被掛止部４１に挿入されてダクトジョイント３０をケース４Ａに近づける案内部３９が形成されている。
【００２５】
このような構成からなる換気扇の取付方法においては、ケース４Ａを取付枠２０に挿入する際に、被掛止突起２５をダクトジョイント３０の第１爪部３６を入り口側から奥方に挿入して保持させると共に、第２爪部３８を掛止開口部２６に挿入してダクトジョイント３０の基部近傍を保持させる。ケース４Ａを取付枠２０の奥方に変位させたときに、ケース４Ａの奥壁部の被掛止部４１にダクトジョイント３０の案内部３９を挿入すると、取付枠２０にダクトジョイント３０を固定することができる。
【００２６】
このような換気扇の取付構造及び取付方法によれば、ダクトジョイント３０と換気扇本体４の金属ケース４Ａとの間に隙間を生じさせず、確実にダクトジョイント３０と換気扇本体４とを接触させて、給気や排気を確実に行うことができる。
【００２７】
しかも、取付枠２０に従来のような上部フランジ２Ｂや、掛止突起２Ｄが形成されていないので、軽量化できており、作業性が向上すると共に天井にかかる荷重が少なくなる。また、ダクトジョイント３０を下から上に移動させることで第１爪部３６が被掛止突起２５を保持し，第２爪部３８が掛止開口部２６の上縁部を保持するので、ダクトジョイント３０を取付枠２０に取り付ける作業が容易である。更に、換気扇本体４を取り付ける際に案内部３９が金属ケース４Ａとダクトジョイント３０とを密着させるので、隙間の発生が防止され、換気扇の給気や排気を確実に行うことができる。
【００２８】
【発明の効果】
本発明の換気扇の取付構造及び換気扇の取付方法によれば、ダクトジョイントと換気扇本体の金属ケースとの間に隙間を生じさせず、確実にダクトジョイントと換気扇本体とを接触させて、給気や排気を確実に行うことができる。
【図面の簡単な説明】
【図１】本願の実施の形態にかかる換気扇及びその取付枠の主要構成を示す斜視図。
【図２】図１の取付枠の斜視図。
【図３】図１の取付枠の長辺部と短片部との接合状態及びダクトジョイントと金属ケースの接合状態を示す図。
【図４】図１のダクトジョイントと取付枠の取付構造の側面図。
【図５】図１のダクトジョイントと取付枠の取付構造の正面図。
【図６】図１のダクトジョイントと取付枠の取付構造の部分拡大図。
【図７】従来の換気扇と取付枠の取付構造を示す分解斜視図。
【図８】従来の取付枠の平面図。
【図９】図８の取付枠の側面図。
【図１０】従来の取付枠とダクトジョイントの取付構造の説明図。
【符号の説明】
２０取付枠
２３長辺部
２４短辺部
２５被掛止突起
２６掛止開口部
２８小突起
３０ダクトジョイント
３６第１爪部
３８第２爪部
３９案内部
４１被掛止部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ventilation fan mounting structure and a ventilation fan mounting method for mounting a ventilation fan to an indoor wall surface.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as shown in FIGS. 7 to 10, a ventilation fan mounting structure for mounting a bathroom ventilation fan is known. The thing shown in FIG. 7 thru | or FIG. 10 attaches a bathroom ventilation fan from the inside of a bathroom.
[0003]
In FIG. 7, a mounting frame 2 is installed in an opening 1 formed in the bathroom ceiling. Anchor bolts (not shown) are attached to the beam of the building above the opening of the bathroom ceiling. L-shaped brackets 3 are attached to the long holes 2G of the mounting plate portions 2F at the four corners of the mounting frame 2 with bolts and nuts, etc., and the L-shaped bracket 3 is inserted into the anchor bolt and fixed with the nuts. After fixing 2, the method of inserting and fixing the ventilation fan main body 4 is taken.
[0004]
The mounting frame 2 has a vertical plate portion 2A that extends in the vertical direction to form a rectangular frame shape, and an upper flange portion 2B that extends in the horizontal direction at the upper edge of the vertical plate portion. The duct joints 5 to 7 and the shielding plate 8 are attached to the part 2B. The ventilation fan body 4 is inserted into the rectangular vertical plate portion 2A, screws 10-13 are passed through holes in the flange 9 of the ventilation fan body 4, and screws 10-13 are screwed to the lower flange 2C of the vertical plate portion 2A. Can be attached.
[0005]
As shown in FIG. 10, side plate portions 5B supported by the flange 2B of the mounting frame 2 are formed on the left and right ends of the vertical plate portion 5A of the duct joint 5, and the side plate portion 5B has a retaining hole. 5C is opened. The upper flange 2A of the mounting frame 2 is formed with a latching protrusion 2D that is inserted into the latching hole 5C of the side plate portion 5B. The latching protrusion 2D is obtained by raising the edge of the notch hole 2E, and the duct joint 5 is fixed by the pair of latching protrusions 2D. The latching projection 2D is inserted into the latching hole 5C of the side plate portion 5A and then protrudes to the outside of the side plate portion 5A so as to latch the side plate portion 5A. It is bent to face.
[0006]
Before the duct joint 5 is fixed to the mounting frame 2, a duct (not shown) extending from the back of the indoor ceiling for ventilation is attached to the cylindrical portion 5D, and the duct and the duct joint 5 are fixed by an adhesive tape. In the duct joint 5 to which the duct is connected, the left and right side plate portions 5B are supported by the upper flange 2B along the latching projections 2D, so that the latching projections 2D enter into the latching holes 5C and outside the side plate portions 5B. It is fixed to the mounting frame 2 by popping out and restraining the side plate portion 5B with the vertical plate portion 2A and the latching protrusion 2D. The cylindrical portion 5 D is continuous with the opening portion of the vertical plate portion 5 A of the duct joint 5, and is in communication with the air inlet / outlet opening portion of the ventilation fan body 4.
[0007]
A latching claw 5E is formed on the upper part of the vertical plate portion 5A of the duct joint 5. The latching claw 5E is inserted into the latching hole 4B opened in the ceiling part 4A of the metal case that covers the outside of the ventilation fan body 4, and the metal case and the duct joint 5 are brought into contact with each other. Since the other duct joints 6 and 7 have the same configuration and are attached in the same manner, the description thereof is omitted. Further, the shielding plate 8 is not provided with an opening for sending and prohibits the entry and exit of air.
[0008]
[Problems to be solved by the invention]
However, since the conventional mounting frame 2 cannot attach the bathroom ventilation fan from the inside of the bathroom, the alignment between the latching claw 5E of the duct joint 5 and the latching hole 4B of the metal case 4A of the ventilation fan body 4 cannot be seen. It cannot be visually observed whether the duct joint 5 and the metal case 4A of the ventilation fan body 4 are in contact with each other without a gap. Since the duct joint 5 is easily pulled and tilted when connected to the duct, if the duct joint 5 and the metal case 4A of the ventilation fan body 4 are attached in a tilted state, the metal case of the ventilation fan body 4 is attached. There is a concern that a gap may be generated between 4A and the duct joint 5, and that when the ventilation fan main body 4 is driven, air is sucked or exhausted from the gap.
[0009]
The present invention has been made paying attention to such a problem, and does not create a gap between the duct joint and the metal case of the ventilation fan body, and ensures that the duct joint and the ventilation fan body are in contact with each other. It is an object of the present invention to provide a ventilating fan mounting structure and a ventilating fan mounting method for reliably performing air and exhaust.
[0010]
[Means for Solving the Problems]
In order to solve the above problem, the mounting structure of the ventilation fan according to claim 1 of the present application is as follows.
A mounting frame is provided in the mounting opening formed on the wall surface of the room, a duct joint is attached to the back of the mounting frame, a ventilation fan body is inserted into the mounting frame, and the back of the ventilation fan body is connected to the duct joint. In the mounting structure of the ventilation fan to be hooked on the
The mounting frame includes a flat plate portion extending along a cross section of the mounting opening, a latching opening formed in the flat plate portion, and formed on an upper edge portion of the flat plate portion and projecting outside the side edge portion. A hooked protrusion having a small protrusion,
The duct joint includes a board portion extending in a vertical direction, a hooking portion formed on left and right side edge portions of the board portion, and a claw portion formed at a lower portion of the board portion,
When the duct joint is attached to the mounting frame, the claw portion is latched on the latching opening, the latching portion is latched on the latching projection, and the duct joint is held on the mounting frame. mounting structure of ventilators, characterized in that letting.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the attachment structure and attachment method of the ventilation fan concerning embodiment of this application are demonstrated using drawing.
[0016]
FIG. 1 shows a mounting state of a mounting frame and a duct joint according to a main part of a mounting structure of a ventilation fan according to an embodiment of the present application. Reference numeral 20 denotes a mounting frame, reference numeral 30 denotes a duct joint, and reference numeral 4 A denotes a metal case of the ventilation fan body 4. The metal case 4A is a part of the ventilation fan body 4.
[0017]
The main body of the ventilation fan is stored inside the metal case 4A. The attachment frame 20 is of a type that can be attached to the attachment opening 22 formed in the ceiling 21 of the bathroom from inside the bathroom. The mounting frame 20 is formed in advance in a rectangular shape by welding a pair of the long side portion 23 and the short side portion 24 to each other. The long side portion 23 and the short side portion 24 are formed of a flat plate extending along the cross section of the mounting opening 22.
[0018]
Each of the long side portion 23 and the short side portion 24 includes a pair of hooking projections 25 and a hooking opening 26 for attaching the duct joint 30 of FIG. The short side 24 is provided with a flange 27 supported on the edge of the mounting opening 22, but the long side 23 is not provided with a flange supported on the edge of the mounting opening 22. The weight is reduced. Joining plate portions 29 of the short side portions 24 are joined to both end portions of the long side portion 23. Further, as shown in FIGS. 1 and 3, attachment plate portions 31 for attaching the L-shaped metal fitting 3 shown in FIG. 7 are formed at both ends of the long side portion 23, and below the attachment plate portion 31. The flange 32 of the short side part 24 is joined.
[0019]
Small protrusions 28 that protrude outward are provided on the upper side edge portions of the pair of hooked protrusions 25. A recess 25A is formed between the pair of latching protrusions 25, and the duct joint 30 can be disposed in the recess 25A as shown in FIG. A pair of latching openings 26 are formed in the lower portion of the recess 25A.
[0020]
The duct joint 30 includes a substrate portion 33 extending in the vertical direction, and a box-shaped cylindrical portion 34 for connection is joined to the substrate portion 33. A small projection 35 is formed on the base portion 33 A of the cylindrical portion 34, and this projection 35 is in contact with the upper edge portion of the hooked projection 25. The protrusion 35 is restricted from moving downward by the hooked protrusion 25.
[0021]
First claw portions 36 into which the small protrusions 28 are inserted are formed on the left and right edge portions of the base plate portion 33 of the duct joint 30. A groove 37 having an inclined guide surface 37A is formed on the upper edge of the first claw portion 36. When the duct joint 30 is inserted from the lower side of the mounting frame 20, the inclined surface 37A is a small protrusion. 28 is guided and held in the groove 37, and the substrate portion 33 and the hooked protrusion 25 are brought close to each other.
[0022]
A second claw portion 38 to be inserted into the latching opening 26 is formed at the lower portion of the duct joint 30. The second claw portion 38 is formed so as to protrude upward from the lower side, and a guide inclined portion 38 A is formed on the upper edge portion of the second claw portion 38. When the second claw portion 38 is inserted into the latching opening portion 26 and displaced from the lower side to the upper side, the second claw portion 38 holds the upper edge portion of the latching opening portion 26 and attaches the substrate portion 33 of the duct joint 30 to the mounting frame. 20 short sides 24 are brought close to each other. The duct joint 30 is in contact with the hooked projection 25 via the base portion 33A of the cylindrical portion 34, and is fixed to the short side portion 24 of the mounting frame 20 by the first claw portion 36, the second claw portion 38, and the projection 35. ing.
[0023]
A guide portion 39 to be inserted into the metal case 4 A of the ventilation fan body 4 shown in FIG. 7 is formed on the upper portion of the substrate portion 33 of the duct joint 30. The guide portion 39 is inserted into the hooked portion 41 formed on the metal case 4A to bring the upper portion of the duct joint 30 closer to the metal case 4A. The guide part 39 extends from the upper side to the lower side. The lower end edge portion 39A of the guide portion 39 is inclined in a direction away from the substrate portion 33, and is inserted into the hooked portion 41 of the metal case 4A when the metal case 4A is inserted into the mounting frame 20. The guide part 39 brings the duct joint 30 close to the metal case 4 A or brings the hooked part 41 close to the duct joint 30 side so that the duct joint 30 and the metal case 4 A of the ventilation fan body 4 are in close contact with each other.
[0024]
The mounting structure of the ventilating fan according to this embodiment has a mounting frame 20 attached to a mounting opening 22 formed in a bathroom ceiling 21 which is an indoor wall surface, and a duct joint 30 is attached to the back of the mounting frame 20. 20 is a ventilation fan mounting structure in which the case 4A of the ventilation fan main body 4 is inserted into the interior 20 and the back portion of the case 4A is hooked on the duct joint 30. The mounting frame 20 includes a flat plate portion that extends along the cross section of the mounting opening 22, and a hooking projection 25 is formed on the inner edge of the flat plate portion, and the vicinity of the base portion of the hooking projection 25. A latching opening 26 is formed at the top. On the other hand, in the duct joint 30, a first claw portion 36 that inserts the latching plate portion 25 from the entrance side of the mounting opening 22 to bring the duct joint 30 close to the latching plate portion, and an entrance of the mounting opening 22. A second claw portion 38 that is inserted from the side and brings the duct joint 30 close to the hooked plate portion 25 is formed. A hooked portion 41 is formed on the back wall portion of the case 4A, and a guide portion 39 that is inserted into the hooked portion 41 and brings the duct joint 30 close to the case 4A is formed in the duct joint 30.
[0025]
In the mounting method of the ventilation fan having such a configuration, when the case 4A is inserted into the mounting frame 20, the hooked protrusion 25 is inserted and retained from the entrance side to the inner side of the first claw portion 36 of the duct joint 30. At the same time, the second claw 38 is inserted into the latching opening 26 to hold the vicinity of the base of the duct joint 30. When the guide portion 39 of the duct joint 30 is inserted into the hooked portion 41 of the back wall portion of the case 4A when the case 4A is displaced to the back of the mounting frame 20, the duct joint 30 is fixed to the mounting frame 20. Can do.
[0026]
According to such a mounting structure and mounting method of the ventilation fan, without causing a gap between the duct joint 30 and the metal case 4A of the ventilation fan body 4, the duct joint 30 and the ventilation fan body 4 are reliably brought into contact with each other, Air supply and exhaust can be performed reliably.
[0027]
In addition, since the conventional upper flange 2B and the latching protrusion 2D are not formed on the mounting frame 20, the weight can be reduced, the workability is improved, and the load applied to the ceiling is reduced. Further, by moving the duct joint 30 from the bottom to the top, the first claw portion 36 holds the latching protrusion 25 and the second claw portion 38 holds the upper edge portion of the latching opening portion 26. The operation | work which attaches the joint 30 to the attachment frame 20 is easy. Furthermore, since the guide part 39 closely contacts the metal case 4A and the duct joint 30 when the ventilation fan body 4 is attached, the generation of a gap is prevented, and the ventilation fan can be reliably supplied and exhausted.
[0028]
【The invention's effect】
According to the ventilator fan mounting structure and ventilator fan mounting method of the present invention, the duct joint and the ventilator fan body are securely brought into contact with each other without causing a gap between the duct joint and the metal case of the ventilator fan body. Exhaust can be performed reliably.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a main configuration of a ventilation fan and its mounting frame according to an embodiment of the present application.
FIG. 2 is a perspective view of the mounting frame of FIG.
3 is a view showing a joining state of a long side portion and a short piece portion of the mounting frame of FIG. 1 and a joining state of a duct joint and a metal case.
4 is a side view of the mounting structure of the duct joint and the mounting frame of FIG. 1. FIG.
5 is a front view of a mounting structure of the duct joint and the mounting frame in FIG. 1. FIG.
6 is a partially enlarged view of the mounting structure of the duct joint and the mounting frame in FIG. 1. FIG.
FIG. 7 is an exploded perspective view showing a conventional ventilation fan and mounting frame mounting structure.
FIG. 8 is a plan view of a conventional mounting frame.
9 is a side view of the mounting frame of FIG.
FIG. 10 is an explanatory diagram of a conventional mounting structure of a mounting frame and a duct joint.
[Explanation of symbols]
20 Mounting frame 23 Long side part 24 Short side part 25 Engagement protrusion 26 Engagement opening part 28 Small protrusion 30 Duct joint 36 First claw part 38 Second claw part 39 Guide part 41 Engagement part

Claims

A mounting frame is provided in the mounting opening formed on the wall surface of the room, a duct joint is attached to the back of the mounting frame, a ventilation fan body is inserted into the mounting frame, and the back of the ventilation fan body is connected to the duct joint. In the mounting structure of the ventilation fan to be hooked on the
The mounting frame includes a flat plate portion extending along a cross section of the mounting opening, a latching opening formed in the flat plate portion, and formed on an upper edge portion of the flat plate portion and projecting outside the side edge portion. A hooked protrusion having a small protrusion,
The duct joint includes a board portion extending in a vertical direction, a hooking portion formed on left and right side edge portions of the board portion, and a claw portion formed at a lower portion of the board portion,
When the duct joint is attached to the mounting frame, the claw portion is latched on the latching opening, the latching portion is latched on the latching projection, and the duct joint is held on the mounting frame. A ventilation fan mounting structure characterized in that