JPH11348529A - Air inlet mode selector device for air conditioner for vehicle - Google Patents
Air inlet mode selector device for air conditioner for vehicleInfo
- Publication number
- JPH11348529A JPH11348529A JP16534398A JP16534398A JPH11348529A JP H11348529 A JPH11348529 A JP H11348529A JP 16534398 A JP16534398 A JP 16534398A JP 16534398 A JP16534398 A JP 16534398A JP H11348529 A JPH11348529 A JP H11348529A
- Authority
- JP
- Japan
- Prior art keywords
- outside air
- sealing material
- elastic sealing
- lip
- door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車両用空調装置の
内外気切替装置におけるシール構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal structure for an inside / outside air switching device of a vehicle air conditioner.
【０００２】[0002]
【従来の技術】近年、車両用空調装置では、低騒音に対
する要望がますます強くなっている。このため、送風機
の吸込損失（吸入抵抗）の低減により風量アップ、低騒
音化を図っている。この送風機の吸込損失低減のために
は、送風機の吸込側に配置される内外気切替装置の内外
気の吸入口の開口面積を拡大する必要がある。2. Description of the Related Art In recent years, there has been an increasing demand for low noise in vehicle air conditioners. Therefore, the air volume is increased and the noise is reduced by reducing the suction loss (suction resistance) of the blower. In order to reduce the suction loss of the blower, it is necessary to increase the opening area of the inside and outside air suction ports of the inside and outside air switching device disposed on the suction side of the blower.
【０００３】そして、この内外気吸入口の開口面積拡大
のための対策の１つとして、内外気切替ドアを通常の平
板状の板ドアとせず、ロータリ式のドアにすることが従
来、提案されている。このロータリ式ドアでは、ドア回
動方向に延びる外周壁面を有し、この外周壁面の軸方向
の両側部と回転軸との間を扇形の側板で連結した形状と
して、ドア外周側だけでなく、ドア軸方向の側方からも
内外気を吸入可能にし、これにより、内外気の吸入口開
口面積の増加を図っている。As one of measures for increasing the opening area of the inside / outside air suction port, it has been conventionally proposed that the inside / outside air switching door be a rotary door instead of a normal flat plate door. ing. This rotary door has an outer peripheral wall surface extending in the door rotation direction, and has a shape in which the axial both sides of the outer peripheral wall surface and the rotation shaft are connected by a fan-shaped side plate. The inside and outside air can be sucked from the side in the axial direction of the door, thereby increasing the opening area of the inlet for the inside and outside air.
【０００４】ところで、このようなロータリ式内外気切
替ドアにおけるシール構造として、ドア操作力低減のた
めにリップシールタイプのものが提案されている。この
リップシールタイプのロータリ式ドアでは、ドア基板部
の周縁部表面から内気吸入口および外気吸入口側へ向か
って突出するリップ状（薄板状）の弾性シール材を設
け、また、内気吸入口と外気吸入口の周縁部には内外気
切替ドア側へ突出する堤状部（シール面）を形成し、内
気吸入口および外気吸入口の閉塞時には弾性シール材を
ケース側の堤状部に弾性変形させて圧着させる。これに
より、内気吸入口および外気吸入口の閉塞時のシール作
用を得ている。As a seal structure for such a rotary type inside / outside air switching door, a lip seal type has been proposed in order to reduce the door operating force. In this lip seal type rotary door, a lip-shaped (thin-plate) elastic sealing material projecting from the peripheral surface of the door substrate toward the inside air suction port and the outside air suction port is provided. A ridge-shaped portion (seal surface) is formed at the periphery of the outside air intake port that protrudes toward the inside / outside air switching door, and when the inside air intake port and the outside air intake port are closed, the elastic sealing material is elastically deformed to the case-side ridge portion. And crimped. This achieves a sealing effect when the inside air intake port and the outside air intake port are closed.
【０００５】[0005]
【発明が解決しようとする課題】本発明者らが上記した
リップ状弾性シール材を設けたロータリ式内外気切替ド
アについて試作評価したところ、車両の高速走行時に
は、外気吸入口を通して内外気切替ドアに大きな車両走
行動圧（ラム圧）が加わるので、内気モード時にリップ
状弾性シール材が走行動圧によって弾性変形して堤状部
から離れるという現象が発生し、シール作用が悪化する
ことが分かった。The inventors of the present invention have made a trial evaluation of the rotary type inside / outside air switching door provided with the above-mentioned lip-shaped elastic sealing material. , The lip-shaped elastic sealing material is elastically deformed by the traveling dynamic pressure and separates from the embankment during the inside air mode, and the sealing effect deteriorates. Was.
【０００６】本発明は上記点に鑑みてなされたもので、
リップ状弾性シール材を有する内外気切替ドアにより内
外気の吸入を切替えるものにおいて、車両走行動圧によ
るシール作用の悪化を抑制することを目的とする。[0006] The present invention has been made in view of the above points,
It is an object of the present invention to switch inside / outside air suction by an inside / outside air switching door having a lip-shaped elastic sealing material, and to suppress deterioration of a sealing effect due to a vehicle traveling dynamic pressure.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、請求項１ないし５に記載の発明では、内外気切替ド
ア（１６、１７）のドア基板部（１６ａ〜１７ｃ）の周
縁部表面から、内気吸入口（１１、１２）および外気吸
入口（１３）側へ向かって突出するリップ状弾性シール
材（１９ａ〜２０ｂ）を備え、内気吸入口（１１、１
２）と外気吸入口（１３）の周縁部には内外気切替ドア
（１６、１７）側へ突出する堤状部（２１〜２４）を形
成し、リップ状弾性シール材（１９ａ〜２０ｂ）を弾性
変形させて堤状部（２１〜２４）に圧着させる車両用空
調装置の内外気切替装置において、外気吸入口（１３）
を通して内外気切替ドア（１６）に加わる車両走行動圧
によってリップ状弾性シール材（１９ａ）が堤状部（２
２）から離れる方向に弾性変形する部位に、リップ状弾
性シール材（１９ａ）の弾性変形を抑制する変形抑制部
材（１９ｃ、１９ｅ）を備えることを特徴としている。In order to achieve the above object, according to the present invention, the inside and outside air switching doors (16, 17) are provided from the peripheral surface of the door substrate portion (16a-17c). Lip-shaped elastic sealing members (19a to 20b) protruding toward the inside air suction ports (11, 12) and the outside air suction port (13).
2) and ridge-shaped portions (21 to 24) protruding toward the inside / outside air switching doors (16, 17) are formed in the peripheral portion of the outside air intake port (13), and lip-shaped elastic sealing materials (19a to 20b) are provided. In an inside / outside air switching device of a vehicle air conditioner which is elastically deformed and pressure-bonded to a bank-like portion (21 to 24), an outside air intake port (13)
The lip-shaped elastic sealing material (19a) is caused by the vehicle traveling dynamic pressure applied to the inside / outside air switching door (16) through the ridge-shaped portion (2).
It is characterized in that a deformation suppressing member (19c, 19e) for suppressing the elastic deformation of the lip-shaped elastic sealing material (19a) is provided at a portion that is elastically deformed in a direction away from 2).
【０００８】これによると、内気モード時に、車両走行
動圧によってリップ状弾性シール材（１９ａ）が堤状部
（２２）から離れる方向に弾性変形しようとする際に、
この弾性変形を変形抑制部材（１９ｃ、１９ｅ）により
抑制することができる。そのため、内気モードの高速走
行時においても、弾性シール材（１９ａ）が堤状部（２
２）に圧着した状態を良好に維持できる。従って、内気
モードの高速走行時におけるシール性悪化（内気中への
外気混入）を確実に防止できる。According to this, in the inside air mode, when the lip-shaped elastic sealing material (19a) is going to be elastically deformed in the direction away from the bank-like portion (22) due to the vehicle running dynamic pressure,
This elastic deformation can be suppressed by the deformation suppressing members (19c, 19e). Therefore, even at the time of high-speed traveling in the inside air mode, the elastic sealing material (19a) is
2) The state of the pressure bonding can be favorably maintained. Therefore, it is possible to reliably prevent deterioration of the sealing performance (mixing of outside air into the inside air) during high-speed running in the inside air mode.
【０００９】一方、外気モード時には、弾性シール材
（１９ａ）を変形抑制部材（１９ｃ、１９ｅ）の形成部
位とは反対側へ変形させることにより、弾性シール材
（１９ａ）の柔軟な弾性変形特性を確保できる。そのた
め、弾性シール材（１９ａ）が堤状部（２１）に圧着し
て柔軟に弾性変形することを保証できる。その結果、変
形抑制部材（１９ｃ、１９ｅ）の存在にかかわらず、弾
性シール材（１９ａ）を堤状部（２１）に確実に圧着さ
せて、シール性を良好に発揮することができる。On the other hand, in the outside air mode, the elastic sealing material (19a) is deformed toward the side opposite to the portion where the deformation suppressing members (19c, 19e) are formed, so that the elastic sealing material (19a) has a soft elastic deformation characteristic. Can be secured. Therefore, it can be ensured that the elastic sealing material (19a) is pressed against the bank-like portion (21) and elastically deforms flexibly. As a result, irrespective of the presence of the deformation suppressing members (19c, 19e), the elastic sealing material (19a) can be securely pressed against the bank-like portion (21), and the sealing property can be exhibited well.
【００１０】上記変形抑制部材は、請求項２に記載のご
とくリップ状弾性シール材（１９ａ）自身に一体成形し
た突起部（１９ｃ、１９ｅ）で構成できる。また、請求
項２における突起部（１９ｃ、１９ｅ）は、請求項３に
記載のごとく、リップ状弾性シール材（１９ａ）から車
両走行動圧によるリップ状弾性シール材（１９ａ）の変
形方向側に複数に分割して突出させた形状にすることが
できる。The deformation suppressing member can be constituted by a projection (19c, 19e) integrally formed with the lip-shaped elastic sealing material (19a) itself. Further, the protrusions (19c, 19e) in claim 2 are, as described in claim 3, from the lip-shaped elastic seal material (19a) to the deformation direction side of the lip-shaped elastic seal material (19a) due to the vehicle running dynamic pressure. The shape can be divided into a plurality of portions and protruded.
【００１１】また、請求項２における突起部（１９ｅ）
は、請求項４に記載のごとく、リップ状弾性シール材
（１９ａ）と平行に、かつ、リップ状弾性シール材（１
９ａ）よりも低い高さ寸法で形成され、さらに、リップ
状弾性シール材（１９ａ）の変形方向側に隣接して位置
する形状にすることができる。また、変形抑制部材は、
請求項５に記載のごとくドア基板部（１６ａ、１６ｃ）
に一体成形した突起部で構成することができる。Further, the projection (19e) according to claim 2 is provided.
As described in claim 4, the lip-shaped elastic sealing material (1a) is parallel to the lip-shaped elastic sealing material (19a).
9a), and can be formed in a shape adjacent to the lip-shaped elastic sealing material (19a) in the deformation direction. In addition, the deformation suppressing member,
The door substrate portion (16a, 16c) according to claim 5.
It can be constituted by a projection integrally formed with the projection.
【００１２】なお、上記各手段の括弧内の符号は、後述
する実施形態記載の具体的手段との対応関係を示すもの
である。The reference numerals in parentheses of the above means indicate the correspondence with specific means described in the embodiments described later.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を図に
基づいて説明する。 （第１実施形態）図１〜図６は本発明の第１実施形態を
示すもので、図１、図２は車両用空調装置の通風系にお
ける内外気切替装置および送風機を含む送風機ユニット
部を示すもので、図３は図１における内外気切替部の拡
大図で、図４は図１のＡ−Ａ断面図である。図１、２に
示す送風機ユニット部は、通常、自動車の車室内前部の
計器盤下方で、助手席側の部位に配置される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 6 show a first embodiment of the present invention. FIGS. 1 and 2 show a blower unit including an inside / outside air switching device and a blower in a ventilation system of a vehicle air conditioner. 3 is an enlarged view of the inside / outside air switching unit in FIG. 1, and FIG. 4 is a sectional view taken along the line AA in FIG. The blower unit shown in FIGS. 1 and 2 is usually arranged at a position on the passenger seat side below the instrument panel at the front of the passenger compartment of the automobile.
【００１４】１０は合成樹脂製の内外気切替箱（ケー
ス）で、その下方には送風用スクロールケーシング３０
が隣接して配置されており、内外気切替箱１０の内部は
スクロールケーシング３０のベルマウス状の吸入口３１
に連通している。また、内外気切替箱１０は、車室内空
気を吸入する第１内気吸入口１１および第２内気吸入口
１２と車室外空気を吸入する外気吸入口１３とを有して
おり、外気吸入口１３を中央に配置し、その両側に第
１、第２内気吸入口１１、１２を配置している。換言す
ると、車両前後方向において、最も後方側に第１内気吸
入口１１を配置し、その前方側に外気吸入口１３を配置
し、最も前方側に第２内気吸入口１２を配置している。An inside / outside air switching box (case) 10 made of a synthetic resin is provided below the scroll casing 30 for blowing air.
Are arranged adjacent to each other, and the inside of the inside / outside air switching box 10 is a bell mouth-shaped suction port 31 of the scroll casing 30.
Is in communication with Further, the inside / outside air switching box 10 has a first inside air intake port 11 and a second inside air intake port 12 for sucking vehicle interior air, and an outside air intake port 13 for sucking outside vehicle interior air. Are arranged at the center, and first and second inside air suction ports 11 and 12 are arranged on both sides thereof. In other words, in the vehicle front-rear direction, the first inside air intake port 11 is arranged at the most rear side, the outside air intake port 13 is arranged at the front side, and the second inside air intake port 12 is arranged at the most front side.
【００１５】第２内気吸入口１２は内気吸入量増加のた
めの補助吸入口である。なお、本例では、第１、第２内
気吸入口１１、１２にそれぞれ車室内からの異物混入防
止のための内気格子部材１４、１５が備えられている。
そして、内外気切替箱１０内に内外気切替ドア１６およ
び補助内気ドア１７が回動可能に収納されている。The second inside air suction port 12 is an auxiliary suction port for increasing the inside air suction amount. In this example, the first and second inside air intake ports 11 and 12 are provided with inside air lattice members 14 and 15 for preventing foreign matter from entering the vehicle interior.
An inside / outside air switching door 16 and an auxiliary inside air door 17 are rotatably housed in the inside / outside air switching box 10.
【００１６】ここで、内外気切替ドア１６は第１内気吸
入口１１と外気吸入口１３を切替開閉し、また、補助内
気ドア１７は第２内気吸入口１２を開閉するものであ
り、いずれも、ロータリ式ドアからなる。ここで、ロー
タリ式ドアドア１６、１７を具体的に説明すると、各ド
ア１６、１７はドア回動方向に延びる外周壁面１６ａ、
１７ａを有し、この外周壁面１６ａ、１７ａの軸方向の
両側部と回転軸１６ｂ、１７ｂとの間を扇形の側板１６
ｃ、１７ｃで連結した形状としている。そして、外周壁
面１６ａ、１７ａおよび扇形の側板１６ｃ、１７ｃで構
成されるドア基板部の大きさを第１、第２内気吸入口１
１、１２および外気吸入口１３を閉塞するに必要な大き
さに設定してある。Here, the inside / outside air switching door 16 switches between the first inside air suction port 11 and the outside air suction port 13 and opens and closes, and the auxiliary inside air door 17 opens and closes the second inside air suction port 12. , Consisting of a rotary door. Here, the rotary doors 16 and 17 will be specifically described. Each door 16 and 17 has an outer peripheral wall surface 16a extending in the door rotation direction.
17a, and a fan-shaped side plate 16 is provided between both axial sides of the outer peripheral wall surfaces 16a, 17a and the rotation shafts 16b, 17b.
c and 17c. Then, the size of the door board portion composed of the outer peripheral wall surfaces 16a, 17a and the fan-shaped side plates 16c, 17c is adjusted to the first and second inside air suction ports 1.
The size is set to a size necessary for closing the air inlets 1 and 12 and the outside air inlet 13.
【００１７】これにより、各ドア１６、１７は、ドア外
周側の開口だけでなく、軸方向側方の開口をも開閉でき
る構成となっており、このように、ドア外周側および軸
方向側方の両方の開口を開閉可能なドアを本明細書では
ロータリ式ドアという。なお、外周壁面１６ａ、１７ａ
の形状が図示の例では平面状になっているが、外周壁面
１６ａ、１７ａを回転軸１６ｂ、１７ｂを中心とする曲
率半径の円弧状にしてもよいことはいうまでもない。Accordingly, each of the doors 16 and 17 can open and close not only the opening on the outer peripheral side of the door but also the opening on the axial side. A door capable of opening and closing both openings is referred to as a rotary door in this specification. In addition, the outer peripheral wall surfaces 16a, 17a
Is flat in the illustrated example, but it goes without saying that the outer peripheral wall surfaces 16a and 17a may be formed in an arc shape having a radius of curvature about the rotation shafts 16b and 17b.
【００１８】上記のごときロータリ式ドア１６、１７の
採用に伴って、第１、第２内気吸入口１１、１２の形状
は、いずれも、ロータリ式ドア１６、１７の外周壁面１
６ａ、１７ａに対向する部位から側板１６ｃ、１７ｃに
対向する部位まで開口する門型に屈曲した開口形状にな
っている。これにより、内気の吸入開口面積を増加させ
て、内気モードによる最大冷房能力の向上を図ってい
る。これに対し、外気吸入口１３は図２に示すように通
常の矩形状の平面開口形状になっている。With the adoption of the rotary doors 16 and 17 as described above, the shapes of the first and second inside air suction ports 11 and 12 are all changed to the outer peripheral wall 1 of the rotary doors 16 and 17.
It has a gate-shaped opening shape that opens from a portion facing 6a, 17a to a portion facing side plates 16c, 17c. As a result, the area of the suction opening of the inside air is increased, and the maximum cooling capacity in the inside air mode is improved. On the other hand, as shown in FIG. 2, the outside air inlet 13 has a normal rectangular planar opening shape.
【００１９】図４に示すように、ロータリ式の内外気切
替ドア１６は、その左右両側の扇形の側板１６ｃ、１６
ｃの回転中心位置から軸方向外方へ回転軸１６ｂ、１６
ｂが突出しており、この左右の回転軸１６ｂ、１６ｂは
内外気切替箱１０の軸受穴１８、１８に回転自在に支持
されている。また、左右両側の扇形の側板１６ｃ、１６
ｃの回転中心位置の内側部は補強部材１６ｄにより連結
され、ドア１６のねじれ剛性の向上を図っている。ま
た、外周壁面１６ａと扇形の側板１６ｃ、１６ｃの内側
空間１６ｅはそのまま外部へ開口しているので、この内
側空間１６ｅを通って図４の紙面垂直方向には空気が自
由に流通可能である。内外気切替ドア１６の上述した要
素１６ａ〜１６ｄは例えば、ポリプロピレンのような樹
脂により一体成形で簡単に製造できる。As shown in FIG. 4, the rotary inside / outside air switching door 16 has fan-shaped side plates 16c, 16 on both right and left sides thereof.
The rotation shafts 16b and 16 extend axially outward from the rotation center position of c.
The left and right rotating shafts 16b, 16b are rotatably supported by bearing holes 18, 18 of the inside / outside air switching box 10. Also, fan-shaped side plates 16c, 16 on both left and right sides.
The inside of the rotation center position c is connected by a reinforcing member 16d to improve the torsional rigidity of the door 16. Also, since the inner space 16e of the outer peripheral wall surface 16a and the fan-shaped side plates 16c, 16c is open to the outside as it is, air can freely flow through the inner space 16e in the direction perpendicular to the plane of FIG. The above-described elements 16a to 16d of the inside / outside air switching door 16 can be easily manufactured by integral molding using a resin such as polypropylene.
【００２０】なお、補助内気ドア１７も上記内外気切替
ドア１６とドア基本構造は概略同一であり、同様の作動
を行うので、具体的説明は省略する。次に、上記ロータ
リ式内外気切替ドア１６および補助内気ドア１７におけ
るシール構造を説明すると、ドアシール構造は、ドア操
作力低減のためにリップシールタイプになっており、ド
ア１６、１７のうち、ドア基板部の周縁部表面、すなわ
ち、外周壁面１６ａ、１７ａおよび側板１６ｃ、１７ｃ
の周縁部表面に、リップ状（薄板状）の弾性シール材１
９ａ、１９ｂ、２０ａ、２０ｂを設けている。この弾性
シール材１９ａ〜２０ｂはエラストマゴムからなるもの
で、ドア基板部の樹脂材料と同系統のエラストマゴム
（例えば、ポリプロピレン系のエラストマゴム）を選択
することにより、弾性シール材１９ａ〜２０ｂをドア基
板部の樹脂成形時に同時に一体成形することができる。The auxiliary inside air door 17 has the same basic structure as that of the inside / outside air switching door 16 and operates in the same manner. Next, the sealing structure of the rotary inside / outside air switching door 16 and the auxiliary inside air door 17 will be described. The door sealing structure is of a lip seal type to reduce the door operating force. Peripheral surface of substrate portion, ie, outer peripheral wall surfaces 16a, 17a and side plates 16c, 17c
Lip-shaped (thin plate-shaped) elastic sealing material 1
9a, 19b, 20a and 20b are provided. The elastic sealing members 19a to 20b are made of an elastomer rubber. By selecting the same type of elastomer rubber (for example, polypropylene-based elastomer rubber) as the resin material of the door substrate portion, the elastic sealing members 19a to 20b can be used for the door. It can be integrally molded at the same time as the resin molding of the substrate portion.
【００２１】弾性シール材１９ａ〜２０ｂは、ドア基板
部から第１、第２内気吸入口１１、１２および外気吸入
口側へ向かってリップ状（薄板状）に突出するものであ
り、図１、３、４に示すように、内外気切替ドア１６の
弾性シール材１９ａ、１９ｂは外周壁面１６ａと側板１
６ｃの周縁部（ドア回動方向の両側端部の周縁部）に沿
って門型に形成されている。補助内気ドア１７の弾性シ
ール材２０ａ、２０ｂも同様の門型に形成されている。The elastic seal members 19a to 20b project in a lip shape (thin plate shape) from the door substrate toward the first and second inside air suction ports 11, 12 and the outside air suction port. As shown in FIGS. 3 and 4, the elastic sealing members 19a and 19b of the inside / outside air switching door 16 are formed by the outer peripheral wall surface 16a and the side plate 1.
The gate 6c is formed in a gate shape along the peripheral edge (the peripheral edge at both ends in the door rotation direction). The elastic sealing members 20a and 20b of the auxiliary inside air door 17 are also formed in the same gate shape.
【００２２】一方、第１、第２内気吸入口１１、１２お
よび外気吸入口１３の周縁部には内外気切替ドア１６、
補助内気ドア１７側へ突出する堤状部２１、２２、２
３、２４を形成している。これらの堤状部２１、２２、
２３、２４は、第１、第２内気吸入口１１、１２および
外気吸入口１３の閉塞時には、弾性シール材１９ａ、１
９ｂ、２０ａ、２０ｂの先端部が弾性変形して圧着す
る。On the other hand, at the peripheral portions of the first and second inside air inlets 11 and 12 and the outside air inlet 13, an inside / outside air switching door 16,
Embankments 21, 22, 2 projecting toward the auxiliary inside air door 17
3 and 24 are formed. These ridges 21, 22,
When the first and second inside air suction ports 11 and 12 and the outside air suction port 13 are closed, the elastic sealing members 19a and 19a
The distal ends of 9b, 20a and 20b are elastically deformed and pressed.
【００２３】従って、上記堤状部２１〜２４はいずれ
も、弾性シール材１９ａ、１９ｂ、２０ａ、２０ｂの門
型形状に対応した門型の形状にしてある。なお、図４に
は、弾性シール材１９ｂおよび堤状部２２の門型形状を
図示している。また、各堤状部２１〜２４は弾性シール
材１９ａ、１９ｂ、２０ａ、２０ｂの先端部が圧着する
傾斜シール面２１ａ〜２４ａ（図３参照）を形成してい
る。Therefore, each of the ridge portions 21 to 24 has a gate shape corresponding to the gate shape of the elastic sealing members 19a, 19b, 20a and 20b. FIG. 4 illustrates the gate-shaped shapes of the elastic sealing material 19b and the bank-shaped portion 22. In addition, each of the bank-like portions 21 to 24 forms inclined sealing surfaces 21a to 24a (see FIG. 3) to which the distal ends of the elastic sealing materials 19a, 19b, 20a, and 20b are pressed.
【００２４】ここで、第１内気吸入口１１と外気吸入口
１３との間の堤状部２２、および外気吸入口１３と第２
内気吸入口１２との間の堤状部２３には、それぞれ傾斜
方向の異なる傾斜シール面２２ａ、２２ｂ、傾斜シール
面２３ａ、２３ｂを２つづつ形成している。なお、堤状
部２１〜２４は内外気切替箱１０の樹脂製ケース体に一
体成形で形成することができる。Here, the bank-like portion 22 between the first inside air suction port 11 and the outside air suction port 13, and the outside air suction port 13 and the second
In the bank-like portion 23 between the inside air inlet 12 and the inside air inlet 12, two inclined seal surfaces 22a and 22b and two inclined seal surfaces 23a and 23b having different inclination directions are formed. Note that the bank portions 21 to 24 can be formed integrally with the resin case body of the inside / outside air switching box 10.
【００２５】図１、２の上下、左右方向は、車両搭載時
における送風機ユニット部の上下、左右方向を示してお
り、ロータリ式の内外気切替ドア１６および補助内気ド
ア１７の回転軸１６ｂ、１７ｂは内外気切替箱１０内で
上記各吸入口１１〜１３の下方側の略中心部にて車両左
右方向に延びるように配置されており、各ドア１６、１
７は車両前後方向に回動する。The vertical and horizontal directions in FIGS. 1 and 2 indicate the vertical and horizontal directions of the blower unit when the vehicle is mounted, and the rotary shafts 16b and 17b of the rotary type inside / outside air switching door 16 and auxiliary inside air door 17 are shown. Are disposed in the inside / outside air switching box 10 so as to extend in the left-right direction of the vehicle at a substantially central portion below the suction ports 11 to 13.
7 rotates in the vehicle front-rear direction.
【００２６】各ドア１６、１７の回転軸１６ｂ、１７ｂ
の一端部は、内外気切替箱１０の外部において図示しな
いドア操作機構に連結される。このドア操作機構として
は、空調制御パネル（図示せず）に設けられた内外気切
替操作部材（例えば、手動操作レバー）の手動操作力を
ケーブル、リンク機構等を介して回転軸１６ｂ、１７ｂ
に伝達して、ドア１６、１７を回動操作するか、あるい
は空調制御パネルの内外気切替操作部材により電気スイ
ッチを作動させて、電気的アクチュエータ（サーボモー
タ等）を作動させ、この電気的アクチュエータによりリ
ンク機構等を介して回転軸１６ｂ、１７ｂに伝達して、
ドア１６、１７を回動操作するようにしてもよい。The rotating shafts 16b, 17b of the doors 16, 17
Is connected to a door operating mechanism (not shown) outside the inside / outside air switching box 10. As the door operation mechanism, a manual operation force of an inside / outside air switching operation member (for example, a manual operation lever) provided on an air-conditioning control panel (not shown) is transmitted through a cable, a link mechanism, or the like to the rotating shafts 16b, 17b.
To operate the electric actuator (servo motor, etc.) by turning the doors 16 and 17 or operating the electric switch by the inside / outside air switching operation member of the air conditioning control panel. To the rotating shafts 16b, 17b via a link mechanism or the like,
The doors 16 and 17 may be rotated.
【００２７】図１において、２５はエアフィルタで、コ
ルゲート（波形）状の和紙または多孔質のウレタンフォ
ーム等からなるフィルタ部材を樹脂製の枠体で支持する
ようにした構成となっている。ここで、エアフィルタ２
５の全体形状は図１に示すような平板状のものであっ
て、空気中の塵埃を取り除くものであり、必要に応じて
上記フィルタ部材に活性炭のような悪臭成分を吸着する
吸着材を付加して脱臭機能をも発揮できるようにしても
よい。In FIG. 1, reference numeral 25 denotes an air filter having a structure in which a filter member made of corrugated (corrugated) Japanese paper or porous urethane foam is supported by a resin frame. Here, the air filter 2
The overall shape of 5 is a flat plate as shown in FIG. 1 for removing dust from the air. If necessary, an adsorbent for adsorbing malodorous components such as activated carbon is added to the filter member. The deodorizing function may also be exerted.
【００２８】また、エアフィルタ２５は、内外気切替箱
１０内において、ロータリドア１６、１７の回転軸１６
ｂ、１７ｂより空気下流側に配置されて、ロータリドア
１６、１７の回動を妨げないように配置されている。ス
クロールケーシング３０は樹脂製のものであって、その
内部にはスクロール形状の中心部位に遠心式多翼ファン
（シロッコファン）からなる送風用ファン３２が配置さ
れており、このファン３２の回転により吸入口３１から
吸入された空気が矢印Ｂのようにファン３２の半径方向
外方へ流れるようになっている。送風用ファン３２は駆
動用モータ３３の回転軸３４に連結されて回転する。In the inside / outside air switching box 10, the air filter 25 is connected to the rotary shaft 16 of the rotary doors 16 and 17.
The rotary doors 16 and 17 are disposed downstream of the air outlets b and 17b so as not to hinder the rotation of the rotary doors 16 and 17. The scroll casing 30 is made of resin. Inside the scroll casing 30, a blower fan 32 composed of a centrifugal multi-blade fan (sirocco fan) is disposed at the center of the scroll shape. Air sucked from the port 31 flows outward in the radial direction of the fan 32 as shown by an arrow B. The blower fan 32 is connected to a rotation shaft 34 of a drive motor 33 and rotates.
【００２９】図２において、スクロールケーシング３０
の空気出口部３５には図示しない空調ユニットが連結さ
れており、この空調ユニットを通過して送風空気が周知
のごとく冷却、除湿、再加熱されて温度調整後に車室内
へ吹き出すようになっている。次に、本実施形態の作動
を説明する。まず、最初に、内外気吸入の切替に関する
基本的作動を説明する。内外気の切替は２つのロータリ
式ドア１６、１７の回動により行うことができ、図１、
３の実線位置は内気導入モードの状態を示している。す
なわち、内外気切替ドア１６の弾性シール材１９ａの先
端部が堤状部２２の傾斜シール面２２ａに弾性的に圧着
し、また、弾性シール材１９ｂの先端部が堤状部２３の
傾斜シール面２３ａに弾性的に圧着する。これにより、
内外気切替ドア１６の外周壁面１６ａおよび側板１６ｃ
により外気吸入口１３を全閉し、第１内気吸入口１１を
全開する。In FIG. 2, the scroll casing 30
An air-conditioning unit (not shown) is connected to the air outlet 35 of the air-conditioning unit. After passing through the air-conditioning unit, the blown air is cooled, dehumidified, and reheated as is well known, and is blown into the vehicle compartment after temperature adjustment. . Next, the operation of the present embodiment will be described. First, the basic operation related to the switching between the inside and outside air suction will be described. The switching between the inside and outside air can be performed by turning the two rotary doors 16 and 17, and FIG.
The position of the solid line 3 indicates the state of the inside air introduction mode. That is, the tip of the elastic sealing material 19 a of the inside / outside air switching door 16 is elastically pressed against the inclined sealing surface 22 a of the bank-like portion 22, and the tip of the elastic sealing material 19 b is attached to the inclined sealing surface of the bank-like portion 23. 23a is elastically pressed. This allows
Outer wall surface 16a and side plate 16c of inside / outside air switching door 16
, The outside air intake port 13 is fully closed, and the first inside air intake port 11 is fully opened.
【００３０】このとき、補助内気ドア１７は図１、３の
実線位置に位置することより、補助内気ドア１７の外周
壁面１７ａおよび側板１７ｃが第２内気吸入口１２の開
口面から開離して第２内気吸入口１２を全開する。従っ
て、送風ファン３２の作動により第１内気吸入口１１と
第２内気吸入口１２の両方から内気を吸入して空調ユニ
ット側へ送風できる。At this time, since the auxiliary inside air door 17 is located at the solid line position in FIGS. 1 and 3, the outer peripheral wall surface 17 a and the side plate 17 c of the auxiliary inside air door 17 are separated from the opening surface of the second inside air intake port 12, (2) Open the inside air suction port 12 fully. Therefore, by operating the blower fan 32, the inside air can be sucked from both the first inside air suction port 11 and the second inside air suction port 12 and blown to the air conditioning unit side.
【００３１】次に、外気モードが選択されると、図１、
３の実線位置から内外気切替ドア１６を反時計方向に所
定角度回動して、図５の位置に操作する。これにより、
内外気切替ドア１６の弾性シール材１９ａの先端部が堤
状部２１の傾斜シール面２１ａに弾性的に圧着し、これ
と同時に、弾性シール材１９ｂの先端部が堤状部２２の
傾斜シール面２２ｂに弾性的に圧着する。Next, when the outside air mode is selected, FIG.
The inside / outside air switching door 16 is rotated counterclockwise by a predetermined angle from the position indicated by the solid line 3 and is operated to the position shown in FIG. This allows
The tip of the elastic sealing material 19a of the inside / outside air switching door 16 is elastically pressed against the inclined sealing surface 21a of the bank-like portion 21, and at the same time, the tip of the elastic sealing material 19b is attached to the inclined sealing surface of the bank-like portion 22. 22b is elastically pressed.
【００３２】この結果、第１内気吸入口１１を内外気切
替ドア１６の外周壁面１６ａおよび側板１６ｃにより全
閉し、外気吸入口１３を全開する。また、補助内気ドア
１７は図１、３の実線位置から時計方向に所定角度回動
することにより、図５の位置に操作される。これによ
り、補助内気ドア１７の弾性シール材２０ａ、２０ｂの
先端部がそれぞれ堤状部２３の傾斜シール面２３ｂ、堤
状部２４の傾斜シール面２４ａに弾性的に圧着し、外周
壁面１７ａおよび側板１７ｃにより第２内気吸入口１２
の開口面を全閉する。As a result, the first inside air inlet 11 is completely closed by the outer peripheral wall 16a and the side plate 16c of the inside / outside air switching door 16, and the outside air inlet 13 is fully opened. In addition, the auxiliary inside air door 17 is operated to the position shown in FIG. 5 by rotating a clockwise predetermined angle from the solid line position in FIGS. As a result, the distal ends of the elastic sealing members 20a and 20b of the auxiliary inside air door 17 are elastically pressed against the inclined sealing surfaces 23b and 24a of the bank-like portions 23 and 24, respectively. 17c, the second inside air inlet 12
Fully close the opening surface of.
【００３３】従って、送風ファン３２の作動により外気
吸入口１３から外気のみを吸入して空調ユニット側へ送
風できる。ところで、図１、３に示す内気導入モードに
おいて、車両高速走行時には、外気吸入口１３を通して
内外気切替ドア１６の弾性シール材１９ａ、１９ｂに大
きな車両走行動圧（ラム圧）が加わる。このとき、一方
の弾性シール材１９ｂには堤状部２３の傾斜シール面２
３ａに対してより一層圧着する方向に走行動圧が加わる
ので、自己シール作用が発生する。従って、弾性シール
材１９ｂに対しては走行動圧がシール性に何ら悪影響を
与えない。Therefore, only the outside air can be sucked from the outside air inlet 13 by the operation of the blower fan 32 to blow the air toward the air conditioning unit. By the way, in the inside air introduction mode shown in FIGS. 1 and 3, when the vehicle is running at a high speed, a large vehicle running dynamic pressure (ram pressure) is applied to the elastic seal members 19a and 19b of the inside / outside air switching door 16 through the outside air intake port 13. At this time, the inclined sealing surface 2 of the bank-like portion 23 is provided on one elastic sealing material 19b.
Since the traveling dynamic pressure is applied in the direction of further pressing the substrate 3a, a self-sealing action occurs. Therefore, the running dynamic pressure does not exert any adverse effect on the sealing performance of the elastic sealing material 19b.
【００３４】これに反し、他方の弾性シール材１９ａ
は、堤状部２２の傾斜シール面２２ａから開離する方向
（図６（ｂ）の矢印Ｃ参照）に走行動圧が加わるととも
に、弾性シール材１９ａが倒れやすいリップ状の形状で
あるため、車両高速走行時に弾性シール材１９ａが走行
動圧により弾性変形して傾斜シール面２２ａから開離
し、シール性を悪化させるという現象が発生し、この結
果、内気モード時に外気が混入するという不具合を生じ
る。On the other hand, the other elastic sealing material 19a
Is a lip-shaped shape in which the traveling dynamic pressure is applied in the direction separating from the inclined sealing surface 22a of the bank-like portion 22 (see the arrow C in FIG. 6B), and the elastic sealing material 19a easily falls down. When the vehicle travels at a high speed, a phenomenon occurs in which the elastic sealing material 19a is elastically deformed by the traveling dynamic pressure and separates from the inclined sealing surface 22a, thereby deteriorating the sealing performance. As a result, a problem occurs in which outside air is mixed in the inside air mode. .
【００３５】そこで、本実施形態では、図６に示すよう
に、弾性シール材１９ａに、車両走行動圧（矢印Ｃ方
向）による弾性変形を抑制するための突起部１９ｃを設
けている。この突起部１９ｃは弾性シール材１９ａ自身
に一体成形されて変形抑制部材としての役割を果たすも
のであって、弾性シール材１９ａのうち走行動圧による
変形方向側の部位（換言すると、走行動圧による変形方
向の内側部位）に形成されている。Therefore, in this embodiment, as shown in FIG. 6, the elastic sealing member 19a is provided with a projection 19c for suppressing elastic deformation due to the vehicle running dynamic pressure (in the direction of arrow C). The protrusion 19c is formed integrally with the elastic sealing material 19a itself and plays a role as a deformation suppressing member. A portion of the elastic sealing material 19a on the deformation direction side due to the traveling dynamic pressure (in other words, the traveling dynamic pressure). (The inner part in the deformation direction).
【００３６】図６（ａ）は車両停止時のように、弾性シ
ール材１９ａに車両走行動圧が加わらない状態を示し、
図６（ｂ）は高速走行時のように、弾性シール材１９ａ
に車両走行動圧が矢印Ｃ方向から加わって、弾性シール
材１９ａが走行動圧の印加方向Ｃへ変形している状態を
示している。ここで、高速走行時には、走行動圧によっ
て弾性シール材１９ａが矢印Ｃ方向へ変形しようとする
が、弾性シール材１９ａのうち、変形方向側の部位に突
起部１９ｃを形成しているため、矢印Ｃ方向への変形に
対する剛性が高くなる。FIG. 6A shows a state in which the vehicle running dynamic pressure is not applied to the elastic sealing member 19a, such as when the vehicle is stopped.
FIG. 6B shows the elastic sealing material 19a as in the case of running at high speed.
Shows a state in which the vehicle running dynamic pressure is applied from the direction of arrow C to deform the elastic sealing material 19a in the direction C in which the running dynamic pressure is applied. Here, at the time of high-speed traveling, the elastic sealing material 19a tends to deform in the direction of arrow C due to the traveling dynamic pressure. However, since the elastic sealing material 19a has a projection 19c at a portion on the deformation direction side, the arrow The rigidity against deformation in the C direction is increased.
【００３７】その結果、弾性シール材１９ａの矢印Ｃ方
向への変形を効果的に抑制できるので、内気モードの高
速走行時においても、弾性シール材１９ａが堤状部２２
の傾斜シール面２２ａに圧着した状態を良好に維持でき
る。従って、内気モードの高速走行時におけるシール性
悪化（内気中への外気混入）を確実に防止できる。一
方、外気モード時には、弾性シール材１９ａが堤状部２
１の傾斜シール面２１ａに圧着するが、この際は、図６
（ｃ）に示すように、走行動圧が弾性シール材１９ａを
傾斜シール面２１ａに圧着させる方向（矢印Ｃ方向）に
作用するので、走行動圧による自己シール作用が発生す
る。従って、走行動圧によるシール性悪化という懸念は
全くない。As a result, the deformation of the elastic sealing material 19a in the direction of arrow C can be effectively suppressed, so that the elastic sealing material 19a is
Can be satisfactorily maintained in a state of being pressed against the inclined sealing surface 22a. Therefore, it is possible to reliably prevent deterioration of the sealing performance (mixing of outside air into the inside air) during high-speed running in the inside air mode. On the other hand, in the outside air mode, the elastic sealing material 19a is
1 is pressed against the inclined sealing surface 21a of FIG.
As shown in (c), the running dynamic pressure acts in the direction (arrow C direction) in which the elastic sealing material 19a is pressed against the inclined sealing surface 21a, so that the self-sealing action by the running dynamic pressure occurs. Therefore, there is no concern that the sealing performance is deteriorated due to the running dynamic pressure.
【００３８】また、車両停止時のように走行動圧が作用
しない場合にも、突起部１９ｃの存在によってシール性
が妨げられることがない。すなわち、図６（ｃ）に示す
ように、弾性シール材１９ａの先端部が堤状部２１の傾
斜シール面２１ａに圧着する際に、突起部１９ｃは弾性
シール材１９ａの弾性変形方向の内側でなく、外側の部
位に位置しているので、弾性シール材１９ａの柔軟な弾
性変形特性を確保できる。Further, even when the traveling dynamic pressure does not act, such as when the vehicle is stopped, the sealability is not hindered by the presence of the projection 19c. That is, as shown in FIG. 6C, when the tip of the elastic sealing material 19a is pressed against the inclined sealing surface 21a of the bank-like portion 21, the projection 19c is positioned inside the elastic deformation direction of the elastic sealing material 19a. However, since the elastic seal member 19a is located at the outer portion, the elastic sealing material 19a can secure flexible elastic deformation characteristics.
【００３９】そのため、弾性シール材１９ａが傾斜シー
ル面２１ａに圧着して柔軟に弾性変形することを保証で
きる。従って、突起部１９ｃを設けているにもかかわら
ず、弾性シール材１９ａの先端部を傾斜シール面２１ａ
に確実に圧着させて、シール性を良好に発揮することが
できる。なお、内外気切替ドア１６の他方の弾性シール
材１９ｂは内気モード時、外気モード時のいずれでも、
走行動圧が傾斜シール面２２ｂ、傾斜シール面２３ａに
対する圧着方向へ作用して、自己シール作用が発生する
ので、弾性シール材１９ｂに変形抑制部材としての突起
部１９ｃを設ける必要はない。Therefore, it can be ensured that the elastic sealing material 19a is pressed against the inclined sealing surface 21a and flexibly elastically deformed. Therefore, despite the provision of the projection 19c, the distal end of the elastic sealing material 19a is inclined with the inclined sealing surface 21a.
The sealing property can be exhibited favorably. In addition, the other elastic sealing material 19b of the inside / outside air switching door 16 is used in both the inside air mode and the outside air mode.
Since the running dynamic pressure acts in the direction of pressing against the inclined sealing surfaces 22b and 23a to generate a self-sealing effect, it is not necessary to provide the elastic sealing member 19b with the projection 19c as a deformation suppressing member.
【００４０】同様に、補助内気ドア１７の弾性シール材
２０ａは外気モード時に走行動圧が傾斜シール面２３ｂ
に対する圧着方向へ作用するので、弾性シール材２０ａ
に変形抑制部材としての突起部１９ｃを設ける必要はな
い。また、補助内気ドア１７の他の弾性シール材２０ｂ
には外気モード時に走行動圧が作用しないので、やは
り、突起部１９ｃを設ける必要がない。Similarly, the elastic sealing member 20a of the auxiliary inside air door 17 has a sloping sealing surface 23b in which the running dynamic pressure in the outside air mode is reduced.
Acting in the direction of crimping against the elastic seal material 20a
It is not necessary to provide the projection 19c as a deformation suppressing member on the base. Further, another elastic sealing material 20b of the auxiliary inside air door 17 is used.
Does not need to be provided with the projection 19c because the traveling dynamic pressure does not act in the outside air mode.
【００４１】（第２実施形態）図７は第２実施形態であ
り、第１実施形態における突起部１９ｃを複数（図示の
例では２個）に分割したものであり、図７（ａ）は内気
モード時に弾性シール材１９ａが矢印Ｃ方向から走行動
圧を受けているとともに弾性シール材１９ａが傾斜シー
ル面２２ａに圧着している状態を示す。図７（ｂ）は外
気モード時に弾性シール材１９ａが矢印Ｃ方向から走行
動圧を受けて傾斜シール面２１ａに圧着している状態を
示す。このように、第２実施形態でも、第１実施形態と
同じ作用効果を発揮できる。(Second Embodiment) FIG. 7 shows a second embodiment, in which the projection 19c in the first embodiment is divided into a plurality (two in the illustrated example). In the inside air mode, a state is shown in which the elastic seal member 19a is receiving the traveling dynamic pressure from the direction of arrow C and the elastic seal member 19a is pressed against the inclined seal surface 22a. FIG. 7B shows a state in which the elastic sealing material 19a receives the traveling dynamic pressure from the direction of arrow C and presses against the inclined sealing surface 21a in the outside air mode. As described above, also in the second embodiment, the same operation and effect as in the first embodiment can be exhibited.
【００４２】（第３実施形態）図８は第３実施形態であ
り、第１、第２実施形態における突起部１９ｃを廃止
し、その代わりに、リップ状弾性シール材１９ａの基底
部１９ｄからリップ状弾性シール材１９ａと平行に延び
る突起部１９ｅを一体成形している。この突起部１９ｅ
は、リップ状弾性シール材１９ａの走行動圧による変形
方向側の部位に微小間隔を開けて隣接している。また、
突起部１９ｅはリップ状弾性シール材１９ａりも低い高
さ寸法で形成されている。(Third Embodiment) FIG. 8 shows a third embodiment, in which the projection 19c in the first and second embodiments is omitted, and instead, the lip is formed from the base 19d of the lip-shaped elastic sealing material 19a. A projection 19e extending in parallel with the elastic sealing material 19a is integrally formed. This projection 19e
Is adjacent to a portion of the lip-shaped elastic seal material 19a on the deformation direction side due to the running dynamic pressure with a small interval. Also,
The protruding portion 19e is also formed with a lower height dimension than the lip-shaped elastic sealing material 19a.
【００４３】図８（ａ）は内気モード時において、車両
停止時のように弾性シール材１９ａが走行動圧を受けて
いない状態を示し、図８（ｂ）は内気モード時におい
て、車両高速走行時のように弾性シール材１９ａが矢印
Ｃ方向から走行動圧を受けているとともに弾性シール材
１９ａが傾斜シール面２２ａに圧着している状態を示
す。図８（ｃ）は外気モード時に弾性シール材１９ａが
矢印Ｃ方向から走行動圧を受けて傾斜シール面２１ａに
圧着している状態を示す。FIG. 8 (a) shows a state in which the elastic seal member 19a is not subjected to the traveling dynamic pressure when the vehicle is stopped in the inside air mode, and FIG. 8 (b) shows a state in which the vehicle runs at high speed in the inside air mode. This shows a state in which the elastic seal member 19a receives the traveling dynamic pressure from the direction of arrow C and the elastic seal member 19a is pressed against the inclined seal surface 22a as in the case of FIG. FIG. 8C shows a state in which the elastic sealing material 19a is pressed against the inclined sealing surface 21a by receiving the traveling dynamic pressure from the direction of arrow C in the outside air mode.
【００４４】図９は第３実施形態の作用説明図であり、
図９（ａ）は図８（ｂ）の使用状態における弾性シール
材１９ａの変形量と弾性シール材１９ａにかかる応力と
の関係を示すもので、弾性シール材１９ａが走行動圧を
受けて突起部１９ｅ側へ変形する際に、弾性シール材１
９ａの変形量がＬ0 に到達するまでは、弾性シール材１
９ａと突起部１９ｅとの間に微小間隔が保たれる。その
ため、この間では、応力の増加に比例して変形量が増大
する。FIG. 9 is an operation explanatory view of the third embodiment.
FIG. 9A shows the relationship between the amount of deformation of the elastic sealing material 19a and the stress applied to the elastic sealing material 19a in the use state of FIG. 8B. When the elastic seal material 1 is deformed toward the portion 19e side,
The deformation amount of 9a until reaching the L 0, the elastic sealing member 1
A minute interval is maintained between 9a and the protrusion 19e. Therefore, during this time, the amount of deformation increases in proportion to the increase in stress.
【００４５】これに対して、弾性シール材１９ａの変形
量がＬ0 を越えると、弾性シール材１９ａが突起部１９
ｅの上端に当接して突起部１９ｅにより支持されるよう
になる。この結果、弾性シール材１９ａの変形が突起部
１９ｅにより抑制されるので、応力の増加に対する変形
量が急減する。これにより、走行動圧を受けても、弾性
シール材１９ａの先端部と傾斜シール面２２ａとの圧着
状態を確実に維持できる。On the other hand, when the amount of deformation of the elastic sealing material 19a exceeds L 0 , the elastic sealing material 19a
e and comes to be supported by the projection 19e. As a result, since the deformation of the elastic sealing material 19a is suppressed by the protrusion 19e, the amount of deformation with respect to an increase in stress is sharply reduced. Thereby, even when the traveling dynamic pressure is received, the pressure-bonded state between the distal end portion of the elastic sealing material 19a and the inclined sealing surface 22a can be reliably maintained.
【００４６】図９（ｂ）は図８（ｃ）の使用状態におけ
る弾性シール材１９ａの変形量と弾性シール材１９ａに
かかる応力との関係を示すもので、図８（ｃ）の使用状
態では弾性シール材１９ａが突起部１９ｅから離れる方
向に変形するので、弾性シール材１９ａの応力と変形量
とが変形量の全域で比例関係にあり、弾性シール材１９
ａの柔軟な弾性変形特性を確保できる。従って、突起部
１９ｅの存在にかかわらず、弾性シール材１９ａの柔軟
な弾性変形により良好なシール性を発揮できる。FIG. 9B shows the relationship between the amount of deformation of the elastic seal member 19a and the stress applied to the elastic seal member 19a in the use state of FIG. 8C. In the use state of FIG. Since the elastic seal material 19a is deformed in a direction away from the protrusion 19e, the stress and the deformation amount of the elastic seal material 19a are in a proportional relationship over the entire deformation amount, and the elastic seal material 19a is deformed.
a) Flexible elastic deformation characteristics can be secured. Therefore, irrespective of the presence of the projection 19e, a favorable sealing property can be exhibited by the flexible elastic deformation of the elastic sealing material 19a.
【００４７】このように、第３実施形態においても、第
１、第２実施形態と同じ作用効果を発揮できる。 （他の実施形態）なお、第３実施形態においては、突起
部１９ｅを弾性シール材１９ａに一体成形しているが、
内外気切替ドア１６の外周壁面１６ａに突起部１９ｅを
弾性シール材１９ａから切り離して一体成形してもよ
い。As described above, also in the third embodiment, the same functions and effects as those of the first and second embodiments can be exhibited. (Other Embodiments) In the third embodiment, the projection 19e is formed integrally with the elastic sealing material 19a.
The projection 19e may be cut off from the elastic sealing material 19a and formed integrally with the outer peripheral wall surface 16a of the inside / outside air switching door 16.
【００４８】また、第１〜第３実施形態においては、ロ
ータリ式内外気切替ドア１６の他に、ロータリ式補助内
気ドア１７を備える場合について説明したが、第２内気
吸入口１２および補助内気ドア１７を廃止したものにも
本発明を適用できることはもちろんである。また、第１
〜第３実施形態においては、ロータリ式内外気切替ドア
１６の基板部（１６ａ、１６ｃ）に備える弾性シール材
１９ａに、変形抑制部材（突起部１９ｃ、１９ｅ）を設
けているが、本発明は、平板状の内外気切替ドアにリッ
プ状の弾性シール材を設ける場合にも同様に適用でき
る。Further, in the first to third embodiments, the case where the rotary type auxiliary inside air door 17 is provided in addition to the rotary type inside / outside air switching door 16 has been described, but the second inside air intake port 12 and the auxiliary inside air door are provided. Of course, the present invention can be applied to a system in which 17 is abolished. Also, the first
In the third to third embodiments, the deformation suppressing members (projections 19c, 19e) are provided on the elastic sealing material 19a provided on the substrate (16a, 16c) of the rotary type inside / outside air switching door 16, but the present invention is not limited to this. The present invention can be similarly applied to a case where a lip-shaped elastic sealing material is provided on a flat-shaped inside / outside air switching door.
【図１】本発明を適用する車両用空調装置の送風機ユニ
ット部の縦断面図である。FIG. 1 is a longitudinal sectional view of a blower unit of a vehicle air conditioner to which the present invention is applied.
【図２】図１の概略斜視図である。FIG. 2 is a schematic perspective view of FIG.
【図３】図１の内外気切替装置部分の拡大断面図であ
る。FIG. 3 is an enlarged sectional view of the inside / outside air switching device portion of FIG. 1;
【図４】図１のＡ−Ａ断面図である。FIG. 4 is a sectional view taken along line AA of FIG. 1;
【図５】図１に示す内外気切替ドア部分の外気モード時
の概略断面図である。FIG. 5 is a schematic sectional view of the inside / outside air switching door portion shown in FIG. 1 in an outside air mode.
【図６】本発明の第１実施形態を示す内外気切替ドアの
要部断面図である。FIG. 6 is a sectional view of a main part of the inside / outside air switching door showing the first embodiment of the present invention.
【図７】本発明の第２実施形態を示す内外気切替ドアの
要部断面図である。FIG. 7 is a sectional view of a main part of an inside / outside air switching door showing a second embodiment of the present invention.
【図８】本発明の第３実施形態を示す内外気切替ドアの
要部断面図である。FIG. 8 is a sectional view of a main part of an inside / outside air switching door showing a third embodiment of the present invention.
【図９】本発明の第３実施形態の作用説明図である。FIG. 9 is an operation explanatory view of the third embodiment of the present invention.
１０…内外気切替箱、１１、１２…第１、第２内気導入
口、１３…外気導入口 １６…ロータリ式内外気切替ドア、１７…ロータリ式補
助内気ドア、１６ａ、１７ａ…外周壁、１６ｃ、１７ｃ
…側板、１９ａ〜２０ｂ…弾性シール材、２１〜２４…
堤状部。DESCRIPTION OF SYMBOLS 10 ... inside / outside air switching box, 11, 12 ... 1st, 2nd inside air introduction port, 13 ... outside air introduction port 16 ... rotary type inside / outside air switching door, 17 ... rotary type auxiliary inside air door, 16a, 17a ... outer peripheral wall, 16c , 17c
... side plates, 19a-20b ... elastic sealing materials, 21-24 ...
Embankment.
Claims (5)
（１３）を有する内外気切替箱（１０）と、 前記内外気切替箱（１０）内に配置され、前記内気吸入
口（１１、１２）と前記外気吸入口（１３）を切替開閉
する内外気切替ドア（１６、１７）とを備え、 前記内外気切替ドア（１６、１７）は、前記内気吸入口
（１１、１２）および前記外気吸入口（１３）を閉塞す
るに必要な大きさを有するドア基板部（１６ａ〜１７
ｃ）と、前記ドア基板部（１６ａ〜１７ｃ）の周縁部表
面から、前記内気吸入口（１１、１２）および前記外気
吸入口（１３）側へ向かって突出するリップ状弾性シー
ル材（１９ａ〜２０ｂ）とから構成されており、 前記内気吸入口（１１、１２）と前記外気吸入口（１
３）の周縁部には前記内外気切替ドア（１６、１７）側
へ突出する堤状部（２１〜２４）を形成し、 前記リップ状弾性シール材（１９ａ〜２０ｂ）を弾性変
形させて前記堤状部（２１〜２４）に圧着させる車両用
空調装置の内外気切替装置において、 前記外気吸入口（１３）を通して前記内外気切替ドア
（１６）に加わる車両走行動圧によって前記リップ状弾
性シール材（１９ａ）が前記堤状部（２２）から離れる
方向に弾性変形する部位に、前記リップ状弾性シール材
（１９ａ）の弾性変形を抑制する変形抑制部材（１９
ｃ、１９ｅ）を備えることを特徴とする車両用空調装置
の内外気切替装置。An inside / outside air switching box (10) having an inside air suction port (11, 12) and an outside air suction port (13); , 12) and an inside / outside air switching door (16, 17) for switching and opening / closing the outside air intake port (13), wherein the inside / outside air switching door (16, 17) is provided with the inside air intake ports (11, 12) and A door board portion (16a-17) having a size necessary to close the outside air intake port (13);
c) and a lip-shaped elastic sealing material (19a to 19c) protruding from the peripheral surface of the door substrate portion (16a to 17c) toward the inside air suction ports (11, 12) and the outside air suction port (13). 20b), the inside air inlets (11, 12) and the outside air inlet (1
A ridge portion (21 to 24) protruding toward the inside / outside air switching door (16, 17) is formed at a peripheral portion of 3), and the lip-shaped elastic sealing material (19a to 20b) is elastically deformed to form the lip-shaped elastic sealing material (19a to 20b). An inside / outside air switching device of a vehicle air conditioner that is pressed against a bank-like portion (21 to 24), wherein the lip-shaped elastic seal is formed by a vehicle running dynamic pressure applied to the inside / outside air switching door (16) through the outside air suction port (13). A deformation suppressing member (19) for suppressing elastic deformation of the lip-shaped elastic sealing material (19a) is provided at a portion where the material (19a) elastically deforms in a direction away from the bank-like portion (22).
c, 19e), an inside / outside air switching device for a vehicle air conditioner.
シール材（１９ａ）自身に一体成形した突起部（１９
ｃ、１９ｅ）からなることを特徴とする請求項１に記載
の車両用空調装置の内外気切替装置。2. The projection (19) integrally formed on the lip-shaped elastic sealing material (19a) itself.
The inside / outside air switching device for a vehicle air conditioner according to claim 1, wherein c and 19e) are comprised.
弾性シール材（１９ａ）から前記車両走行動圧による前
記リップ状弾性シール材（１９ａ）の変形方向側に複数
に分割して突出することを特徴とする請求項２に記載の
車両用空調装置の内外気切替装置。3. The projection (19c) is divided into a plurality of pieces and protrudes from the lip-shaped elastic seal material (19a) in the deformation direction of the lip-shaped elastic seal material (19a) due to the vehicle traveling dynamic pressure. The inside / outside air switching device for a vehicle air conditioner according to claim 2, characterized in that:
弾性シール材（１９ａ）と平行に、かつ、前記リップ状
弾性シール材（１９ａ）よりも低い高さ寸法で形成され
ており、 さらに、前記突起部（１９ｅ）は、前記リップ状弾性シ
ール材（１９ａ）の変形方向側に隣接して位置している
ことを特徴とする請求項２に記載の車両用空調装置の内
外気切替装置。4. The projection (19e) is formed in a height dimension parallel to the lip-shaped elastic sealing material (19a) and lower than the lip-shaped elastic sealing material (19a). 3. The inside / outside air switching device for a vehicle air conditioner according to claim 2, wherein the protrusion (19e) is located adjacent to the deformation direction side of the lip-shaped elastic sealing material (19a). .
（１６ａ、１６ｃ）に一体成形した突起部からなること
を特徴とする請求項１に記載の車両用空調装置の内外気
切替装置。5. The inside / outside air switching device for a vehicle air conditioner according to claim 1, wherein the deformation suppressing member comprises a protrusion integrally formed with the door substrate portions (16a, 16c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16534398A JP3900687B2 (en) | 1998-06-12 | 1998-06-12 | Inside / outside air switching device for vehicle air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16534398A JP3900687B2 (en) | 1998-06-12 | 1998-06-12 | Inside / outside air switching device for vehicle air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11348529A true JPH11348529A (en) | 1999-12-21 |
| JP3900687B2 JP3900687B2 (en) | 2007-04-04 |
Family
ID=15810550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16534398A Expired - Fee Related JP3900687B2 (en) | 1998-06-12 | 1998-06-12 | Inside / outside air switching device for vehicle air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3900687B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6428409B1 (en) | 2000-08-25 | 2002-08-06 | Denso Corporation | Inside/outside air switching device having first and second inside air introduction ports |
| JP2008183917A (en) * | 2007-01-26 | 2008-08-14 | Mitsubishi Heavy Ind Ltd | Damper, air-conditioning unit, and vehicular air-conditioner |
| JP2008273421A (en) * | 2007-05-01 | 2008-11-13 | Japan Climate Systems Corp | Air conditioner for automobile |
| KR100947444B1 (en) | 2003-06-20 | 2010-03-12 | 한라공조주식회사 | A Sealing Part for A Cylindrical Door of Air Conditioning System of a Car |
| JP2013189191A (en) * | 2012-03-13 | 2013-09-26 | Visteon Global Technologies Inc | Intake port of air conditioning system for vehicle |
| WO2017183365A1 (en) * | 2016-04-20 | 2017-10-26 | 豊和化成株式会社 | Damper plate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101332426B1 (en) * | 2007-06-01 | 2013-11-22 | 한라비스테온공조 주식회사 | Blower Unit for Vehicle |
-
1998
- 1998-06-12 JP JP16534398A patent/JP3900687B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6428409B1 (en) | 2000-08-25 | 2002-08-06 | Denso Corporation | Inside/outside air switching device having first and second inside air introduction ports |
| KR100947444B1 (en) | 2003-06-20 | 2010-03-12 | 한라공조주식회사 | A Sealing Part for A Cylindrical Door of Air Conditioning System of a Car |
| JP2008183917A (en) * | 2007-01-26 | 2008-08-14 | Mitsubishi Heavy Ind Ltd | Damper, air-conditioning unit, and vehicular air-conditioner |
| JP2008273421A (en) * | 2007-05-01 | 2008-11-13 | Japan Climate Systems Corp | Air conditioner for automobile |
| JP2013189191A (en) * | 2012-03-13 | 2013-09-26 | Visteon Global Technologies Inc | Intake port of air conditioning system for vehicle |
| WO2017183365A1 (en) * | 2016-04-20 | 2017-10-26 | 豊和化成株式会社 | Damper plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3900687B2 (en) | 2007-04-04 |
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