JP6405755B2

JP6405755B2 - Louver structure

Info

Publication number: JP6405755B2
Application number: JP2014136764A
Authority: JP
Inventors: 将也池谷
Original assignee: Suzuki Motor Co Ltd
Current assignee: Suzuki Motor Co Ltd
Priority date: 2014-07-02
Filing date: 2014-07-02
Publication date: 2018-10-17
Anticipated expiration: 2034-07-02
Also published as: JP2016013772A

Description

本発明は、自動車の車室内への空気の空気吹き出し部に設けられるルーバー構造に関する。
詳しくは、フィン面同士が対向する複数の第１フィンがルーバーケース内の開口側に収容され、
フィン面同士が対向し、前記複数の第１フィンと交差する方向に沿う複数の第２フィンが、前記複数の第１フィンよりも前記ルーバーケース内の奥側に収容され、
前記第１フィンは、前記第１フィンの長手方向に沿う第１軸芯周りに回転自在に前記ルーバーケースにより支持され、
前記複数の第１フィンのうち一つの第１フィンが前記第１軸芯周りに回転すると、残りの第１フィンも前記第１軸芯周りに連動回転するように、前記複数の第１フィン同士が連係され、
前記第２フィンは、前記第２フィンの長手方向に沿う第２軸芯周りに回転自在に前記ルーバーケースにより支持され、
前記複数の第２フィンのうち一つの第２フィンが前記第２軸芯周りに回転すると、残りの第２フィンも前記第２軸芯周りに連動回転するように、前記複数の第２フィン同士が連係され、
前記一つの第１フィンに操作ノブが取り付けられ、
前記操作ノブは、前記第１軸芯周りに前記第１フィンと一体に回転可能に構成されるととともに、前記第１フィンに対して前記第１フィンの長手方向にスライド移動可能に構成され、
前記一つの第２フィンに、前記第１フィンに向かって開口する切り欠きが形成され、
前記切り欠きの互いに対向する一対の開口端部に係合軸が架け渡され、
前記操作ノブの後端部にリンクアームが連結されて、前記操作ノブの後端部から前記リンクアームが前記操作ノブの後方に延び、
前記リンクアームは、前記操作ノブに対して、前記第１軸芯に沿う第３軸芯周りに回転自在に構成され、
前記リンクアームに設けられた一対のアーム部が、前記第３軸芯に沿う方向において前記係合軸を挟み込んで前記係合軸に係合し、
前記一対のアーム部は、前記係合軸に対して前記アーム部の長手方向にスライド移動自在に構成され、
前記操作ノブを前記第１フィンと一体に前記第１軸芯周りに回転させると、前記一つの第２フィンは前記第２軸芯周りに連動回転することなく、前記一つの第１フィン以外の第１フィンだけが前記第１軸芯周りに連動回転し、
前記操作ノブを前記第１フィンに対してスライド移動させると、前記一つの第２フィンが前記第２軸芯周りに連動回転するとともに、前記一つの第２フィン以外の第２フィンが連動回転するルーバー構造に関する。 The present invention relates to a louver structure provided in an air blowing portion for air into a passenger compartment of an automobile.
Specifically, a plurality of first fins whose fin surfaces face each other are accommodated on the opening side in the louver case,
The fin surfaces are opposed to each other, and a plurality of second fins along a direction intersecting with the plurality of first fins are accommodated in the back side in the louver case rather than the plurality of first fins,
The first fin is supported by the louver case so as to be rotatable around a first axis along the longitudinal direction of the first fin,
When one first fin of the plurality of first fins rotates about the first axis, the remaining first fins rotate in conjunction with each other around the first axis. Are linked,
The second fin is supported by the louver case so as to be rotatable around a second axis along the longitudinal direction of the second fin,
When one second fin of the plurality of second fins rotates around the second axis, the remaining second fins also rotate together around the second axis so that the plurality of second fins Are linked,
An operation knob is attached to the first fin,
The operation knob is configured to be rotatable integrally with the first fin around the first axis, and is configured to be slidable in the longitudinal direction of the first fin with respect to the first fin.
A cutout opening toward the first fin is formed in the one second fin,
An engagement shaft is bridged between a pair of opening end portions facing each other of the notch,
A link arm is connected to the rear end of the operation knob, and the link arm extends from the rear end of the operation knob to the rear of the operation knob.
The link arm is configured to be rotatable around a third axis along the first axis with respect to the operation knob,
A pair of arm portions provided on the link arm engage the engagement shaft with the engagement shaft sandwiched in the direction along the third axis,
The pair of arm portions is configured to be slidable in the longitudinal direction of the arm portion with respect to the engagement shaft,
When the operation knob is rotated around the first axis integrally with the first fin, the one second fin does not rotate around the second axis, and other than the first fin. Only the first fin rotates together around the first axis,
When the operation knob is slid with respect to the first fin, the one second fin rotates together with the second axis, and the second fins other than the one second fin rotate together. It relates to the louver structure.

この種のルーバー構造においては、例えば、操作者（乗員）が操作ノブを横軸芯（第１軸芯に相当）周りに上下に回転させると、操作ノブが取り付けられた一つの横フィン（第１フィンに相当）が横軸芯周りに回転し、それに連動して残りの横フィンが横軸芯周りに回転する。
一方、操作者が操作ノブを前記一つの横フィンに対して左右にスライド移動させると、その移動力がリンクアームの一対のアーム部から、係合軸が設けられた一つの縦フィン（第２フィンに相当）に伝動する。そして、この縦フィンが縦軸芯（第２軸芯に相当）周りに回転し、それに連動して残りの縦フィンが縦軸芯周りに回転する。これにより、空気の吹き出し方向を、上下左右に変更調節することができる。
従来、特許文献1に開示されているように、上記のルーバー構造では、前ブレード５（第１フィンに相当）と後ブレード７（第２フィンに相当）がルーバーケース内に配置されている。
また、一つの前ブレード５に操作ノブ９１が設けられ、一つの後ブレードに、前方に開口する切り欠き７５が形成され、切り欠き７５に係合柱７９（係合軸に相当）が設けられている。
前記係合柱７９は、長手方向中央部に球体７９ａを有し、前記操作ノブ９１と係合柱７９とはリンクアーム９３によって連結されている。
さらに、リンクアーム９３の一対の係合片部９３ｄ（アーム部に相当）に、球体７９ａの球面に対応する凹状湾曲面９３ｆを有する係合溝９３ｇが設けられている。そして、係合溝９３ｇで球体７９ａを挟みこむことにより、リンクアーム９３と係合柱７９とが係合している。 In this type of louver structure, for example, when an operator (occupant) rotates an operation knob up and down around a horizontal axis (corresponding to the first axis), one horizontal fin (first (Corresponding to one fin) rotates around the horizontal axis, and in conjunction with this, the remaining horizontal fins rotate around the horizontal axis.
On the other hand, when the operator slides the operation knob to the left and right with respect to the one horizontal fin, the moving force is transferred from the pair of arm portions of the link arm to one vertical fin provided with an engagement shaft (second (Equivalent to fins). Then, the vertical fin rotates around the vertical axis (corresponding to the second axial core), and the remaining vertical fins rotate around the vertical axis in conjunction therewith. Thereby, the blowing direction of air can be changed and adjusted up, down, left and right.
Conventionally, as disclosed in Patent Document 1, in the above louver structure, the front blade 5 (corresponding to the first fin) and the rear blade 7 (corresponding to the second fin) are arranged in the louver case.
Further, an operation knob 91 is provided in one front blade 5, a notch 75 that opens forward is formed in one rear blade, and an engagement column 79 (corresponding to an engagement shaft) is provided in the notch 75. ing.
The engaging column 79 has a spherical body 79 a at the center in the longitudinal direction, and the operation knob 91 and the engaging column 79 are connected by a link arm 93.
Furthermore, an engagement groove 93g having a concave curved surface 93f corresponding to the spherical surface of the sphere 79a is provided in a pair of engagement piece portions 93d (corresponding to the arm portion) of the link arm 93. The link arm 93 and the engagement column 79 are engaged with each other by sandwiching the sphere 79a with the engagement groove 93g.

特開２０１２−１７９９３２号公報JP 2012-179932 A

上記従来の構造によれば次の問題があった。
（１）リンクアーム９３の樹脂成形時に、成形型（金型）をリンクアーム９３の係合溝９３ｇに平行な方向（係合溝９３ｇの長手方向）に抜く場合、開口部に向かって係合溝９３ｇに抜き勾配を付けなければ金型を抜けず樹脂成形できない。
金型を抜くため係合溝９３ｇに抜き勾配をつけた場合、リンクアーム９３と球体７９ａとの間隔を一定にできない。そのために、リンクアーム９３を球体７９ａに対してスライド移動させると、リンクアーム９３と球体７９ａが干渉するか、もしくは、リンクアーム９３と球体７９ａの間に隙間が発生する。その結果、リンクアームと球体７９ａが当たる音(ラトル音)が発生する。
（２）前記抜き勾配を付けることを避けるため、金型の抜き方向を変える(例えば、係合溝９３ｇに垂直な方向に変える)場合、スライド型が必要で金型が複雑になる。その上、オス型とメス型を合わせて中に樹脂を流し込んで形成することから、リンクアーム９３の係合溝９３ｇの位置にパーティングライン(オス型とメス型の合わせ目に発生する段差)ができ、パーティングラインと球体７９ａが接触して擦れ音が発生してしまう。
本発明は上記実状に鑑みて成されたもので、その目的は、異音の発生を防止することができるルーバー構造を提供する点にある。 The conventional structure has the following problems.
(1) At the time of resin molding of the link arm 93, when the mold (die) is pulled out in a direction parallel to the engaging groove 93g of the link arm 93 (longitudinal direction of the engaging groove 93g), it is engaged toward the opening. Unless the draft is given to the groove 93g, the mold cannot be removed and the resin cannot be molded.
When the engagement groove 93g has a draft to remove the mold, the distance between the link arm 93 and the sphere 79a cannot be made constant. Therefore, when the link arm 93 is slid with respect to the sphere 79a, the link arm 93 and the sphere 79a interfere with each other, or a gap is generated between the link arm 93 and the sphere 79a. As a result, a sound (rattle sound) hitting the link arm and the sphere 79a is generated.
(2) To change the drawing direction of the mold (for example, to change the direction perpendicular to the engagement groove 93g) in order to avoid applying the draft angle, a slide mold is necessary and the mold becomes complicated. In addition, since the male type and the female type are combined and the resin is poured into the parting line, a parting line (a step generated at the joint between the male type and the female type) is formed at the position of the engagement groove 93g of the link arm 93. The parting line and the sphere 79a come into contact with each other, and a rubbing sound is generated.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a louver structure capable of preventing the generation of abnormal noise.

本発明の特徴は、
フィン面同士が対向する複数の第１フィンがルーバーケース内の開口側に収容され、
フィン面同士が対向し、前記複数の第１フィンと交差する方向に沿う複数の第２フィンが、前記複数の第１フィンよりも前記ルーバーケース内の奥側に収容され、
各第１フィンは、各第１フィンの長手方向に沿う第１軸芯周りに回転自在に前記ルーバーケースにより支持され、
前記複数の第１フィンのうち一つの第１フィンが前記第１軸芯周りに回転すると、残りの第１フィンも前記第１軸芯周りに連動回転するように、前記複数の第１フィン同士が連係され、
各第２フィンは、各第２フィンの長手方向に沿う第２軸芯周りに回転自在に前記ルーバーケースにより支持され、
前記複数の第２フィンのうち一つの第２フィンが前記第２軸芯周りに回転すると、残りの第２フィンも前記第２軸芯周りに連動回転するように、前記複数の第２フィン同士が連係され、
前記一つの第１フィンに操作ノブが取り付けられ、
前記操作ノブは、前記第１軸芯周りに前記第１フィンと一体に回転可能に構成されるととともに、前記第１フィンに対して前記第１フィンの長手方向にスライド移動可能に構成され、
前記一つの第２フィンに、前記第１フィンに向かって開口する切り欠きが形成され、
前記切り欠きの互いに対向する一対の開口端部に係合軸が架け渡され、
前記操作ノブの後端部にリンクアームが連結されて、前記操作ノブの後端部から前記リンクアームが前記操作ノブの後方に延び、
前記リンクアームは、前記操作ノブに対して、前記第１軸芯に沿う第３軸芯周りに回転自在に構成され、
前記リンクアームに設けられた一対のアーム部が、前記第３軸芯に沿う方向において前記係合軸を挟み込んで前記係合軸に係合し、
前記一対のアーム部は、前記係合軸に対して前記アーム部の長手方向にスライド移動自在に構成され、
前記操作ノブを前記第１フィンと一体に前記第１軸芯周りに回転させると、前記一つの第２フィンは前記第２軸芯周りに連動回転することなく、前記一つの第１フィン以外の第１フィンだけが前記第１軸芯周りに連動回転し、
前記操作ノブを前記第１フィンに対してスライド移動させると、前記一つの第２フィンが前記第２軸芯周りに連動回転するとともに、前記一つの第２フィン以外の第２フィンが前記第２軸芯周りに連動回転するルーバー構造であって、
前記アーム部は、前記アーム部の長手方向から見た断面において、前記係合軸の軸芯方向に対応する方向に凸の略半円形状に形成され、
前記係合軸の長手方向中間部にくびれ部が設けられ、
前記アーム部の断面略半円形状の外周面の曲面が前記くびれ部に係合当接する点にある。（請求項１） The feature of the present invention is that
A plurality of first fins facing the fin surfaces are accommodated on the opening side in the louver case,
The fin surfaces are opposed to each other, and a plurality of second fins along a direction intersecting with the plurality of first fins are accommodated in the back side in the louver case rather than the plurality of first fins,
Each first fin is supported by the louver case so as to be rotatable around a first axis along the longitudinal direction of each first fin,
When one first fin of the plurality of first fins rotates about the first axis, the remaining first fins rotate in conjunction with each other around the first axis. Are linked,
Each second fin is supported by the louver case so as to be rotatable around a second axis along the longitudinal direction of each second fin,
When one second fin of the plurality of second fins rotates around the second axis, the remaining second fins also rotate together around the second axis so that the plurality of second fins Are linked,
An operation knob is attached to the first fin,
The operation knob is configured to be rotatable integrally with the first fin around the first axis, and is configured to be slidable in the longitudinal direction of the first fin with respect to the first fin.
A cutout opening toward the first fin is formed in the one second fin,
An engagement shaft is bridged between a pair of opening end portions facing each other of the notch,
A link arm is connected to the rear end of the operation knob, and the link arm extends from the rear end of the operation knob to the rear of the operation knob.
The link arm is configured to be rotatable around a third axis along the first axis with respect to the operation knob,
A pair of arm portions provided on the link arm engage the engagement shaft with the engagement shaft sandwiched in the direction along the third axis,
The pair of arm portions is configured to be slidable in the longitudinal direction of the arm portion with respect to the engagement shaft,
When the operation knob is rotated around the first axis integrally with the first fin, the one second fin does not rotate around the second axis, and other than the first fin. Only the first fin rotates together around the first axis,
When the operation knob is slid with respect to the first fin, the one second fin rotates together with the second axis, and the second fin other than the one second fin is the second fin. A louver structure that rotates in conjunction with the axis,
The arm portion is formed in a substantially semicircular shape convex in a direction corresponding to the axial direction of the engagement shaft in a cross section viewed from the longitudinal direction of the arm portion,
A constriction is provided in the longitudinal intermediate portion of the engagement shaft,
The curved surface of the outer peripheral surface having a substantially semicircular cross section of the arm portion is in a point of engaging and contacting the constricted portion. (Claim 1)

この構成によれば、前記アーム部は、前記アーム部の長手方向から見た断面において、前記係合軸の軸芯方向に対応する方向に凸の略半円形状に形成されているから、リンクアームの樹脂成形時に、前記係合軸の軸芯方向に対応する方向に成形型を抜くことで、パーティングラインが発生する位置は、前記断面において一番幅が広いアーム部の底部側になる。また、上記のリンクアームの樹脂成形時には、スライド型が不要で成形型を簡素化することができ、成形コストを低減することができる。
そして、前記アーム部の断面略半円形状の外周面の曲面が前記くびれ部に係合当接するから、パーティングラインがくびれ部とアーム部の外周面の曲面との当接に影響することがない。つまり、パーティングラインの段差部と係合軸のくびれ部とが当接しない。従って、異音の発生を防止することができる。さらに、一対のアーム部を、前記係合軸のくびれ部に対して前記アーム部の長手方向に円滑にスライド移動させることができる。これにより、操作ノブの操作性を向上させることができる。
（請求項１） According to this configuration, the arm portion is formed in a substantially semicircular shape that is convex in a direction corresponding to the axial direction of the engagement shaft in a cross section viewed from the longitudinal direction of the arm portion. During resin molding of the arm, the parting line is generated by removing the molding die in a direction corresponding to the axial direction of the engagement shaft, and the position where the parting line is generated is on the bottom side of the arm part having the widest width in the cross section. . In addition, when the above-described link arm is molded with a resin, a slide mold is unnecessary, the mold can be simplified, and the molding cost can be reduced.
And, since the curved surface of the outer peripheral surface having a substantially semicircular cross section of the arm portion engages and comes into contact with the constricted portion, the parting line may affect the contact between the constricted portion and the curved surface of the outer peripheral surface of the arm portion. Absent. That is, the step portion of the parting line and the constricted portion of the engagement shaft do not contact each other. Therefore, the generation of abnormal noise can be prevented. Furthermore, the pair of arm portions can be smoothly slid in the longitudinal direction of the arm portion with respect to the constricted portion of the engagement shaft. Thereby, the operativity of an operation knob can be improved.
(Claim 1)

本発明において、
前記くびれ部は、縮径部と、前記縮径部から前記係合軸の軸芯方向の端部側に向かって滑らかに拡径する拡径部とから成り、
前記アーム部の断面略半円形状の外周面の曲面は、前記拡径部の外周面に係合当接していると、次の作用を奏することができる。（請求項２） In the present invention,
The constricted portion includes a reduced diameter portion, and an enlarged diameter portion that smoothly increases in diameter from the reduced diameter portion toward the end side in the axial direction of the engagement shaft,
The curved surface of the outer peripheral surface having a substantially semicircular cross section of the arm portion can exert the following action when engaged and abutting on the outer peripheral surface of the enlarged diameter portion. (Claim 2)

操作者が操作ノブを前記第１軸芯周りに回転させた場合、前記アーム部の断面略半円形状の外周面の曲面が、前記係合軸の拡径部の外周面に係合当接した状態で係合軸に対してスライド移動する。本発明の上記の構成によれば、前記アーム部の断面略半円形状の外周面の曲面は、前記拡径部の外周面に係合当接しているから、上記のスライド移動時に、前記アーム部の断面略半円形状の外周面の曲面と、前記拡径部の外周面とが点接触し、係合当接状態を維持できる。その結果、振動等によるリンクアームと第２フィンとのガタツキが抑えられ、ラトル音の発生を防止することができる。（請求項２） When the operator rotates the operation knob around the first axis, the curved surface of the outer circumferential surface having a substantially semicircular cross section of the arm portion engages with the outer circumferential surface of the enlarged diameter portion of the engagement shaft. In this state, it slides with respect to the engagement shaft. According to the above configuration of the present invention, the curved surface of the outer peripheral surface having a substantially semicircular cross section of the arm portion is in engagement with the outer peripheral surface of the enlarged diameter portion. The curved surface of the outer peripheral surface having a substantially semicircular cross section is point-contacted with the outer peripheral surface of the enlarged diameter portion, and the engagement contact state can be maintained. As a result, rattling between the link arm and the second fin due to vibration or the like is suppressed, and rattle noise can be prevented. (Claim 2)

本発明において、
前記くびれ部は、縮径部と、前記縮径部から前記係合軸の軸芯方向の両端部側に向かって滑らかに拡径する一対の拡径部とから成り、
前記一対のアーム部のうち一方のアーム部の断面略半円形状の外周面の曲面が、前記一対の拡径部のうち一方の拡径部の外周面に係合当接し、
他方の前記アーム部の断面略半円形状の外周面の曲面が、他方の前記拡径部の外周面に係合当接していると、次の作用を奏することができる。（請求項３） In the present invention,
The constricted portion includes a reduced diameter portion and a pair of enlarged diameter portions that smoothly expand from the reduced diameter portion toward both end portions in the axial direction of the engagement shaft,
The curved surface of the outer peripheral surface of the substantially semicircular cross section of one arm portion of the pair of arm portions engages and abuts on the outer peripheral surface of the one enlarged diameter portion of the pair of enlarged diameter portions,
When the curved surface of the outer peripheral surface having a substantially semicircular cross section of the other arm portion is engaged and abutted with the outer peripheral surface of the other enlarged-diameter portion, the following action can be achieved. (Claim 3)

前記係合軸の一対の拡径部は、操作ノブを前記第１軸芯周りに回転操作した場合にリンクアームの一対のアーム部を支持する支持部（支点）となる。この支持部は位置固定状態にあることから、リンクアームが上下に大きく移動することを抑制することができ、リンクアームが不必要にバタつかなくなる。結果的に、バタつき音を低減できる。
また、リンクアームが上下に大きく移動しないので、大きな切り欠きを必要とせず、切り欠きの開口量を減らすことができる。結果的に、ルーバーから吹き出す風の指向性を向上させることができる。（請求項３） The pair of enlarged diameter portions of the engagement shaft serve as support portions (fulcrum points) that support the pair of arm portions of the link arm when the operation knob is rotated around the first axis. Since the support portion is in a fixed position, the link arm can be prevented from moving greatly up and down, and the link arm does not unnecessarily flutter. As a result, the fluttering sound can be reduced.
Further, since the link arm does not move greatly up and down, a large cutout is not required, and the opening amount of the cutout can be reduced. As a result, the directivity of the wind blown from the louver can be improved. (Claim 3)

本発明において、
前記拡径部は部分球状に形成されていると、次の作用を奏することができる。（請求項４） In the present invention,
When the diameter-expanded portion is formed in a partial spherical shape, the following action can be achieved. (Claim 4)

前記アーム部の断面略半円形状の外周面の曲面が受ける前記拡径部の外周面からの抵抗を少なくすることができる。その結果、アーム部の断面略半円形状の外周面の曲面を、前記拡径部の外周面に対して、より円滑にスライド移動させることができる。（請求項４） The resistance from the outer peripheral surface of the enlarged diameter portion received by the curved surface of the outer peripheral surface having a substantially semicircular cross section of the arm portion can be reduced. As a result, the curved surface of the outer peripheral surface having a substantially semicircular cross section of the arm portion can be slid more smoothly with respect to the outer peripheral surface of the enlarged diameter portion. (Claim 4)

本発明において、
前記一対のアーム部は、前記アーム部の長手方向から見た断面において、互いに反対方向に凸の略半円形状に形成されていると、次の作用を奏することができる。（請求項５） In the present invention,
When the pair of arm portions are formed in a substantially semicircular shape convex in opposite directions in a cross section viewed from the longitudinal direction of the arm portions, the following action can be achieved. (Claim 5)

例えば、図５，図６（ａ），図６（ｂ）に示すように、操作ノブ１５を横軸芯Ｏ１（第１軸芯）周りに上方に回転操作した場合、一方のアーム部１６Ａの、上側に凸の断面半円形状の外周面の曲面１６Ａ１と、上下一対の拡径部２０Ｂ，２０Ｃのうち上側の拡径部２０Ｂの外周面２０Ｂ１との係合当接個所が支点となる。そして、前記アーム部１６Ａの、上側に凸の断面半円形状の外周面の曲面１６Ａ１が、前記上側の拡径部２０Ｂの外周面２０Ｂ１に対して円滑にスライド移動する。
また、例えば、図５，図６（ａ），図６（ｃ）に示すように、操作ノブ１５を横軸芯Ｏ１周りに下方に回転操作した場合、他方のアーム部１６Ｂの、下側に凸の断面半円形状の外周面の曲面１６Ｂ１と、上下一対の拡径部２０Ｂ，２０Ｃのうち下側の拡径部２０Ｃの外周面２０Ｃ１との係合当接個所が支点となる。そして、前記アーム部１６Ｂの、下側に凸の断面半円形状の外周面の曲面１６Ｂ１が、前記下側の拡径部２０Ｃの外周面２０Ｃ１に対して円滑にスライド移動する。
このように、操作ノブ１５を上下いずれの方向に回転操作しても、アーム部１６Ａ，１６Ｂの外周面の曲面１６Ａ１，１６Ｂ１が前記拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１に接しながら、アーム部１６Ａ，１６Ｂが拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１に対して円滑にスライド移動するため、両外周面の接触面積を低減できる。結果的に、擦れ音が発生する原因となる接触面積が少なくなり、操作ノブ１５を回転操作した場合の係合軸１３とリンクアーム１４の擦れ音を低減できる。（請求項５） For example, as shown in FIGS. 5, 6A, and 6B, when the operation knob 15 is rotated upward around the horizontal axis O1 (first axis), one arm portion 16A An engagement contact portion between the curved surface 16A1 of the outer circumferential surface having a semicircular shape with an upward convex section and the outer circumferential surface 20B1 of the upper enlarged diameter portion 20B of the pair of upper and lower enlarged diameter portions 20B and 20C serves as a fulcrum. Then, the curved surface 16A1 of the outer peripheral surface having a semicircular cross section convex upward is smoothly slid and moved relative to the outer peripheral surface 20B1 of the upper enlarged diameter portion 20B.
Also, for example, as shown in FIGS. 5, 6 (a), and 6 (c), when the operation knob 15 is rotated downward around the horizontal axis O1, the other arm portion 16B has a lower side. An engagement contact point between the convex curved surface 16B1 of the semicircular outer peripheral surface and the outer peripheral surface 20C1 of the lower enlarged portion 20C of the pair of upper and lower enlarged portions 20B and 20C serves as a fulcrum. Then, the curved surface 16B1 of the outer circumferential surface having a semicircular cross section convex to the lower side of the arm portion 16B smoothly slides with respect to the outer circumferential surface 20C1 of the lower diameter enlarged portion 20C.
As described above, even if the operation knob 15 is rotated in any direction up and down, the curved surfaces 16A1 and 16B1 of the outer peripheral surfaces of the arm portions 16A and 16B are in contact with the outer peripheral surfaces 20B1 and 20C1 of the enlarged diameter portions 20B and 20C. Since the arm portions 16A and 16B slide smoothly with respect to the outer peripheral surfaces 20B1 and 20C1 of the enlarged diameter portions 20B and 20C, the contact area between both outer peripheral surfaces can be reduced. As a result, the contact area that causes the generation of rubbing noise is reduced, and the rubbing noise between the engagement shaft 13 and the link arm 14 when the operation knob 15 is rotated can be reduced. (Claim 5)

本発明において、
前記アーム部の断面略半円形状の外周面のコーナー部は円弧状に形成されていると、次の作用を奏することができる。（請求項６） In the present invention,
When the corner portion of the outer peripheral surface having a substantially semicircular cross section of the arm portion is formed in an arc shape, the following effects can be achieved. (Claim 6)

図５，図６（ａ），図６（ｃ）に示すように、例えば、操作ノブ１５を下方に大きく回転操作して、アーム部１６Ｂの略半円形状の外周面のコーナー部Ｃが係合軸１３の拡径部２０Ｃに接触した場合、コーナー部Ｃは円弧状であるから、異音や擦れ音を低減できる。（請求項６） As shown in FIGS. 5, 6A, and 6C, for example, the operation knob 15 is largely rotated downward to engage the corner portion C of the substantially semicircular outer peripheral surface of the arm portion 16B. When contacting the enlarged diameter portion 20 C of the combined shaft 13, the corner portion C has an arc shape, so that abnormal noise and rubbing noise can be reduced. (Claim 6)

本発明によれば、異音の発生を防止することができるルーバー構造を提供することができた。 ADVANTAGE OF THE INVENTION According to this invention, the louver structure which can prevent generation | occurrence | production of unusual noise was able to be provided.

ルーバーの斜視図Perspective view of louver 複数の横フィン（第１フィン）のうち一つの横フィンと、複数の縦フィン（第２フィン）のうち一つの縦フィンとの連結状態を示す斜視図The perspective view which shows the connection state of one horizontal fin among several horizontal fins (1st fin) and one vertical fin among several vertical fins (2nd fin). 操作ノブの分解斜視図Exploded perspective view of the operation knob 複数の縦フィンのうち一つの縦フィンを示す斜視図The perspective view which shows one vertical fin among several vertical fins 図６のＡ−Ａ断面図AA sectional view of FIG. （ａ）は、通常状態の操作ノブ・横フィン・縦フィン等の位置関係を示す側面図、（ｂ）は、操作ノブが上方に回転操作された状態の操作ノブ・横フィン・縦フィン等の位置関係を示す側面図、（ｃ）は、操作ノブが下方に回転操作された状態の操作ノブ・横フィン・縦フィン等の位置関係を示す側面図(A) is a side view showing the positional relationship of the operation knob, horizontal fin, vertical fin, etc. in the normal state, (b) is the operation knob, horizontal fin, vertical fin, etc. in a state where the operation knob is rotated upward The side view which shows the positional relationship of (a), (c) is a side view which shows the positional relationship of an operation knob, a horizontal fin, a vertical fin, etc. in the state in which the operation knob was rotated downward.

以下、本発明を実施するための形態を図面に基づいて説明する。
図１に、自動車のインストルメントパネルの空気吹き出し部に設けられるルーバー１を示してある。ルーバー１は、自動車に搭載されたＨＶＡＣ（空気調和装置）から送出された空気を車室内に吹き出す。このルーバー１は、樹脂製のルーバーケース２と、ルーバーケース２に内蔵された樹脂製の複数の横フィン１１・縦フィン１２等から成る。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows a louver 1 provided in an air blowing portion of an instrument panel of an automobile. The louver 1 blows out air sent from an HVAC (air conditioner) mounted on the automobile into the passenger compartment. The louver 1 includes a resin louver case 2 and a plurality of resin-made horizontal fins 11 and vertical fins 12 incorporated in the louver case 2.

［ルーバーケース２の構造］
ルーバーケース２は、横長の角筒状のケース本体３を備えている。そして、ケース本体３の前端部（下流側の端部、車室内側の端部）に、前側（車室内側）ほど縦横の長さが長いテーパ角筒状のフィン収容部４が連設されている。さらに、ケース本体３の後端部に、ＨＶＡＣ側からの送風ダクトに連通接続する接続部５が連設されている。接続部５は、ケース本体３よりも縦横の長さが長い角筒状に形成されている。 [Structure of louver case 2]
The louver case 2 includes a case body 3 having a horizontally long rectangular tube shape. Then, a tapered rectangular tube-like fin housing portion 4 having a longitudinal and lateral length that is longer toward the front side (vehicle interior side) is connected to the front end portion (downstream end portion, vehicle interior side end portion) of the case body 3. ing. Further, a connecting portion 5 is provided at the rear end portion of the case main body 3 so as to communicate with the air duct from the HVAC side. The connecting portion 5 is formed in a rectangular tube shape that is longer than the case body 3 in length and width.

前記フィン収容部４には、左右一対の側壁状のフィン支持壁４Ｓが設けられるとともに、左右一側部に前壁４Ｍが設けられている。また、ケース本体３の後部に、ルーバーケース２内の空気の流路を開閉するシャッタダンパ（図示せず）が設けられている。そして、フィン収容部４の前壁４Ｍに、シャッタダンパを開閉操作する操作ダイヤル６が設けられている。 The fin housing portion 4 is provided with a pair of left and right side wall-shaped fin support walls 4S, and a front wall 4M is provided on one side of the left and right sides. A shutter damper (not shown) that opens and closes the air flow path in the louver case 2 is provided at the rear of the case body 3. An operation dial 6 for opening and closing the shutter damper is provided on the front wall 4M of the fin housing portion 4.

［横フィン１１の構造］
図１，図２に示すように、フィン面同士が対向する横長の長方形状の複数の横フィン１１（第１フィンに相当）が、フィン収容部４の開口４Ｋ側に収容されている。そして、横フィン１１の前側の左右両端部に設けられた左右外方側に突出する第１軸部１１Ｃ１が、左右一対のフィン支持壁４Ｓに設けられた支持孔に回転自在に挿入されている。これにより、各横フィン１１が、各横フィン１１の長手方向に沿う横軸芯Ｏ１（第１軸芯に相当、支持孔の軸芯である）周りに回転自在に前記左右一対のフィン支持壁４Ｓにより支持されている。 [Structure of horizontal fin 11]
As shown in FIGS. 1 and 2, a plurality of horizontally long rectangular fins 11 (corresponding to first fins) facing the fin surfaces are accommodated on the opening 4 K side of the fin accommodating portion 4. And the 1st axial part 11C1 which protrudes in the left-right outer side provided in the right-and-left both ends of the front side of the horizontal fin 11 is rotatably inserted in the support hole provided in the left-right paired fin support wall 4S. . As a result, the pair of left and right fin support walls are rotatable about the horizontal axis O1 (corresponding to the first axis, which is the axis of the support hole) along the longitudinal direction of each horizontal fin 11. It is supported by 4S.

［横フィン１１の連係構造］
図２に示すように、横フィン１１の後側の左右一端部が切り欠かれ、その第１切り欠き１１Ｋから左右外方側に第２軸部１１Ｃ２が突出している。そして、複数の横フィン１１の第２軸部１１Ｃ２が、縦長の連係アーム４０（図６（ｂ），図６（ｃ）参照）に形成された上下複数の連結孔に各別に回転自在に挿入係合されている。このようにして、複数の横フィン１１同士が連係アーム４０を介して連係され、複数の横フィン１１のうち一つの横フィン１１が横軸芯Ｏ１周りに回転すると、残りの横フィン１１も横軸芯Ｏ１周りに連動回転するよう構成されている。 [Linkage structure of horizontal fins 11]
As shown in FIG. 2, the left and right end portions on the rear side of the horizontal fin 11 are cut out, and the second shaft portion 11C2 protrudes from the first cutout 11K to the left and right outer sides. Then, the second shaft portions 11C2 of the plurality of horizontal fins 11 are rotatably inserted into the plurality of upper and lower connection holes formed in the vertically long linkage arms 40 (see FIGS. 6B and 6C). Is engaged. In this way, when the plurality of horizontal fins 11 are linked to each other via the linkage arm 40 and one of the plurality of horizontal fins 11 rotates around the horizontal axis O1, the remaining horizontal fins 11 also move horizontally. It is configured to rotate together around the axis O1.

［操作ノブ１５の構造］
図１〜図３に示すように、前記一つの横フィン１１（本実施形態では、複数の横フィン１１のうち上下方向中央に位置する横フィン１１）に平面視長方形状の操作ノブ１５が取り付けられている。操作ノブ１５の中央部には、幅方向に貫通するフィン挿通孔１５Ｈが形成され、フィン挿通孔１５Ｈに横フィン１１がスライド移動可能に挿通されている。これにより、操作ノブ１５が横軸芯Ｏ１周りに前記一つの横フィン１１と一体に回転可能に構成されるとともに、前記一つの横フィン１１に対して、この横フィン１１の長手方向にスライド移動可能に構成されている。 [Structure of operation knob 15]
As shown in FIGS. 1 to 3, an operation knob 15 having a rectangular shape in plan view is attached to the one horizontal fin 11 (in this embodiment, the horizontal fin 11 positioned at the center in the vertical direction among the plurality of horizontal fins 11). It has been. A fin insertion hole 15H penetrating in the width direction is formed in the central portion of the operation knob 15, and the horizontal fin 11 is slidably inserted into the fin insertion hole 15H. Accordingly, the operation knob 15 is configured to be rotatable integrally with the one horizontal fin 11 around the horizontal axis O 1, and slides in the longitudinal direction of the horizontal fin 11 with respect to the one horizontal fin 11. It is configured to be possible.

［リンクアーム１４の構造］
図２，図３に示すように、前記操作ノブ１５の後端部にリンクアーム１４が連結されて、操作ノブ１５の後端部からリンクアーム１４が操作ノブ１５の後方に延びている。操作ノブ１５の後側の左右両端部には、リンクアーム１４に対する連結壁１７が後方に向かって延設され、連結壁１７に支持孔１７Ｈが形成されている。リンクアーム１４は、横軸部１８と、横軸部１８の左右一端部側から操作ノブ１５の後方に延びる左右一対のアーム部１６Ａ，１６Ｂとから成る。そして、横軸部１８の縮径した両端部１８Ａが、左右一対の連結壁１７の支持孔１７Ｈに回転自在に挿入嵌合されている。これにより、リンクアーム１４が操作ノブ１５に対して、前記横軸芯Ｏ１に沿う第３軸芯Ｏ３（支持孔１７Ｈの軸芯である）周りに回転自在に構成されている。 [Structure of link arm 14]
As shown in FIGS. 2 and 3, a link arm 14 is connected to the rear end portion of the operation knob 15, and the link arm 14 extends from the rear end portion of the operation knob 15 to the rear of the operation knob 15. A connecting wall 17 for the link arm 14 extends rearward at both left and right end portions on the rear side of the operation knob 15, and a support hole 17 H is formed in the connecting wall 17. The link arm 14 includes a horizontal shaft portion 18 and a pair of left and right arm portions 16A and 16B extending from the left and right end portions of the horizontal shaft portion 18 to the rear of the operation knob 15. Then, both end portions 18A having a reduced diameter of the horizontal shaft portion 18 are rotatably inserted into the support holes 17H of the pair of left and right connecting walls 17. Accordingly, the link arm 14 is configured to be rotatable with respect to the operation knob 15 around the third axis O3 (which is the axis of the support hole 17H) along the horizontal axis O1.

［リンクアーム１４のアーム部１６Ａ，１６Ｂの構造］
左右一対のアーム部１６Ａ，１６Ｂは、前記第３軸芯Ｏ３に沿う方向において後述の縦フィン１２の係合軸１３を挟み込んでこの係合軸１３に係合している。図５に示すように、アーム部１６Ａ，１６Ｂは、アーム部１６Ａ，１６Ｂの長手方向から見た縦断面において、係合軸１３の軸芯方向Ｊに対応する方向に凸の略半円形状に形成されている。 [Structure of the arm portions 16A and 16B of the link arm 14]
The pair of left and right arm portions 16A, 16B are engaged with the engagement shaft 13 with an engagement shaft 13 of a vertical fin 12 described later interposed therebetween in the direction along the third axis O3. As shown in FIG. 5, the arm portions 16A and 16B have a substantially semicircular shape that is convex in a direction corresponding to the axial direction J of the engagement shaft 13 in a longitudinal section viewed from the longitudinal direction of the arm portions 16A and 16B. Is formed.

詳しくは、一対のアーム部１６Ａ，１６Ｂは、前記縦断面において、互いに反対方向に凸の略半円形状に形成され、一方のアーム部１６Ａが上側に凸の略半円形状に形成され、他方のアーム部１６Ｂが下側に凸の略半円形状に形成されている。アーム部１６Ａ，１６Ｂの略半円形状のコーナー部Ｃは円弧状に形成されている。 Specifically, the pair of arm portions 16A and 16B are formed in a substantially semicircular shape protruding in opposite directions in the longitudinal section, and one arm portion 16A is formed in a substantially semicircular shape protruding upward, The arm portion 16B is formed in a substantially semicircular shape protruding downward. The substantially semicircular corner portion C of the arm portions 16A and 16B is formed in an arc shape.

［縦フィン１２の構造］
図１，図２，図４に示すように、フィン面同士が対向し、複数の横フィン１１と直交する方向（交差する方向に相当）に沿う複数の縦フィン１２が、複数の横フィン１１よりもフィン収容部４内の奥側に収容されている。そして、縦フィン１２の上下両端部に設けられた上下方向に突出する上下一対の第３軸部１２Ｃ１が、フィン収容部４の上壁と底壁に形成された支持孔に回転自在に挿入されている。これにより、前記縦フィン１２が、各縦フィン１２の長手方向に沿う縦軸芯Ｏ２（第２軸芯に相当、支持孔の軸芯である）周りに回転自在にフィン収容部４の上壁と底壁により支持されている。 [Structure of vertical fin 12]
As shown in FIGS. 1, 2, and 4, the fin surfaces face each other, and a plurality of vertical fins 12 along a direction orthogonal to the plurality of horizontal fins 11 (corresponding to the intersecting direction) are a plurality of horizontal fins 11. It is accommodated in the back side in the fin accommodating part 4 rather than. Then, a pair of upper and lower third shaft portions 12C1 provided in the upper and lower ends of the vertical fin 12 and projecting in the vertical direction are rotatably inserted into support holes formed in the upper wall and the bottom wall of the fin housing portion 4. ing. As a result, the vertical fin 12 is rotatable about the vertical axis O2 (corresponding to the second axial core, which is the axis of the support hole) along the longitudinal direction of each vertical fin 12, and the upper wall of the fin housing portion 4 is rotatable. And is supported by the bottom wall.

［縦フィン１２の連係構造］
図２，図４に示すように、縦フィン１２の後側の上端部が切り欠かれ、その第２切り欠き１２Ｋ１から上方に第４軸部１２Ｃ２が突出している。そして、前記複数の縦フィン１２の第４軸部１２Ｃ２が、横長の連係アームに形成された左右複数の連結孔に各別に回転自在に挿入されている。このようにして、複数の縦フィン１２同士が連係アームを介して連係され、複数の縦フィン１２のうち一つの縦フィン１２が縦軸芯Ｏ２周りに回転すると、残りの縦フィン１２も縦軸芯Ｏ２周りに連動回転するよう構成されている。 [Linkage structure of vertical fins 12]
As shown in FIGS. 2 and 4, the rear upper end portion of the vertical fin 12 is cut out, and the fourth shaft portion 12C2 protrudes upward from the second cutout 12K1. Then, the fourth shaft portions 12C2 of the plurality of vertical fins 12 are rotatably inserted into the left and right connection holes formed in the horizontally long linkage arms. In this way, when the plurality of vertical fins 12 are linked together via the linkage arm, and one vertical fin 12 of the plurality of vertical fins 12 rotates around the vertical axis O2, the remaining vertical fins 12 also move to the vertical axis. It is configured to rotate together around the core O2.

［縦フィン１２の係合軸１３の構造］
図４に示すように、前記一つの縦フィン１２（本実施形態では、複数の縦フィン１２のうち左右中央に位置する縦フィン１２）の前側の上下方向中間部に、横フィン１１に向かって開口する第３切り欠き１２Ｋ２が形成され、第３切り欠き１２Ｋ２の互いに対向する上下一対の開口端部に断面円形の係合軸１３が架け渡されている。そして、係合軸１３の長手方向中間部にくびれ部２０が設けられている。くびれ部２０は、縮径部２０Ａと、縮径部２０Ａから係合軸１３の軸芯方向Ｊの両端部側に向かって滑らかに拡径する上下一対の拡径部２０Ｂ，２０Ｃとから成る。拡径部２０Ｂ，２０Ｃは部分球状に形成されている。 [Structure of the engagement shaft 13 of the vertical fin 12]
As shown in FIG. 4, toward the horizontal fin 11 in the vertical intermediate portion on the front side of the one vertical fin 12 (in this embodiment, the vertical fin 12 located at the center of the left and right among the plurality of vertical fins 12). A third notch 12K2 that opens is formed, and an engagement shaft 13 having a circular cross section is bridged between a pair of upper and lower opening ends of the third notch 12K2 facing each other. A constricted portion 20 is provided at the middle portion in the longitudinal direction of the engagement shaft 13. The constricted portion 20 includes a reduced diameter portion 20A and a pair of upper and lower diameter enlarged portions 20B and 20C that smoothly increase in diameter from the reduced diameter portion 20A toward both end portions in the axial direction J of the engagement shaft 13. The enlarged diameter portions 20B and 20C are formed in a partial spherical shape.

［アーム部１６Ａ，１６Ｂと係合軸１３との係合構造］
前述のように、リンクアーム１４に設けられた一対のアーム部１６Ａ，１６Ｂが、第３軸芯Ｏ３に沿う方向において係合軸１３を挟み込んで係合軸１３に係合している。詳しくは、図５に示すように、一対のアーム部１６Ａ，１６Ｂのうち一方のアーム部１６Ａの断面略半円形状の外周面の曲面１６Ａ１が、一対の拡径部２０Ｂ，２０Ｃのうち一方の拡径部２０Ｂの外周面２０Ｂ１（部分球状面）に係合当接（点接触である）している。また、他方のアーム部１６Ｂの断面略半円形状の外周面の曲面１６Ｂ１が、他方の拡径部２０Ｃの外周面２０Ｃ１（部分球状面）に係合当接（点接触である）している。 [Engagement structure of arm portions 16A, 16B and engagement shaft 13]
As described above, the pair of arm portions 16A and 16B provided on the link arm 14 are engaged with the engagement shaft 13 with the engagement shaft 13 interposed therebetween in the direction along the third axis O3. Specifically, as shown in FIG. 5, the curved surface 16A1 of the outer circumferential surface having a substantially semicircular cross section of one arm portion 16A of one of the pair of arm portions 16A and 16B is one of the pair of enlarged diameter portions 20B and 20C. The outer peripheral surface 20B1 (partial spherical surface) of the enlarged diameter portion 20B is in engagement contact (point contact). In addition, the curved surface 16B1 of the outer peripheral surface having a substantially semicircular cross section of the other arm portion 16B is in engagement contact (point contact) with the outer peripheral surface 20C1 (partial spherical surface) of the other enlarged diameter portion 20C. .

一対のアーム部１６Ａ，１６Ｂは、係合軸１３に対してアーム部１６Ａ，１６Ｂの長手方向にスライド移動自在に構成されている。上記の構成により、操作ノブ１５を横フィン１１と一体に横軸芯Ｏ１周りに回転させると、前記一つの縦フィン１２は縦軸芯Ｏ２周りに連動回転することなく、前記一つの横フィン１１以外の横フィン１１だけが横軸芯Ｏ１周りに連動回転する。そして、操作ノブ１５を横フィン１１に対してスライド移動させると、前記一つの縦フィン１２が縦軸芯Ｏ２周りに連動回転するとともに、前記一つの縦フィン１２以外の縦フィン１２が縦軸芯Ｏ２周りに連動回転する。 The pair of arm portions 16A, 16B is configured to be slidable in the longitudinal direction of the arm portions 16A, 16B with respect to the engagement shaft 13. With the above configuration, when the operation knob 15 is rotated around the horizontal axis O1 integrally with the horizontal fin 11, the one vertical fin 12 does not rotate around the vertical axis O2 and rotates. Only the other horizontal fins 11 rotate in conjunction around the horizontal axis O1. When the operation knob 15 is slid with respect to the horizontal fin 11, the one vertical fin 12 rotates in conjunction with the vertical axis O2 and the vertical fins 12 other than the one vertical fin 12 rotate along the vertical axis. Rotating around O2.

本発明の構成によれば、
（１）操作ノブ１５の操作により、空気の吹き出し方向を、上下左右に変更調節することができる。図５に示すように、前記アーム部１６Ａ，１６Ｂは、アーム部１６Ａ，１６Ｂの長手方向から見た断面において、係合軸１３の軸芯方向Ｊに対応する方向に凸の略半円形状に形成されているから、リンクアーム１４の樹脂成形時に、係合軸１３の軸芯方向Ｊに対応する方向に成形型を抜くことで、パーティングラインＰＬが発生する位置は、前記断面において一番幅が広いアーム部１６Ａ，１６Ｂの底部側になる。上記のリンクアーム１４の樹脂成形時には、スライド型が不要で成形型を簡素化することができ、成形コストを低減することができる。
そして、アーム部１６Ａ，１６Ｂの断面略半円形状の外周面の曲面１６Ａ１，１６Ｂ１がくびれ部２０に係合当接するから、パーティングラインＰＬがくびれ部２０とアーム部１６Ａ，１６Ｂの外周面の曲面１６Ａ１，１６Ｂ１との当接に影響することがない。
つまり、パーティングラインＰＬの段差部と係合軸１３のくびれ部２０とが当接しない。従って、異音の発生を防止することができる。さらに、一対のアーム部１６Ａ，１６Ｂを、係合軸１３のくびれ部２０に対してアーム部１６Ａ，１６Ｂの長手方向に円滑にスライド移動させることができる。これにより、操作ノブ１５の操作性を向上させることができる。 According to the configuration of the present invention,
(1) By operating the operation knob 15, the air blowing direction can be changed and adjusted up, down, left and right. As shown in FIG. 5, the arm portions 16A and 16B have a substantially semicircular shape that is convex in a direction corresponding to the axial direction J of the engagement shaft 13 in a cross section viewed from the longitudinal direction of the arm portions 16A and 16B. Thus, when the link arm 14 is molded with resin, the position where the parting line PL is generated by removing the molding die in the direction corresponding to the axial direction J of the engagement shaft 13 is the most in the cross section. It becomes the bottom side of the arm portions 16A and 16B having a large width. At the time of resin molding of the link arm 14 described above, a slide mold is unnecessary, the mold can be simplified, and the molding cost can be reduced.
Since the curved surfaces 16A1 and 16B1 of the outer peripheral surfaces having substantially semicircular cross sections of the arm portions 16A and 16B are brought into engagement with the constricted portion 20, the parting line PL is formed on the outer peripheral surfaces of the constricted portion 20 and the arm portions 16A and 16B. The contact with the curved surfaces 16A1 and 16B1 is not affected.
That is, the stepped portion of the parting line PL and the constricted portion 20 of the engagement shaft 13 do not contact each other. Therefore, the generation of abnormal noise can be prevented. Furthermore, the pair of arm portions 16A and 16B can be smoothly slid in the longitudinal direction of the arm portions 16A and 16B with respect to the constricted portion 20 of the engagement shaft 13. Thereby, the operativity of the operation knob 15 can be improved.

（２）操作者が操作ノブ１５を前記横軸芯Ｏ１周りに回転させた場合、アーム部１６Ａ，１６Ｂが第３軸芯Ｏ３周りに回転しながら、アーム部１６Ａ，１６Ｂの断面略半円形状の外周面の曲面１６Ａ１，１６Ｂ１が、係合軸１３の拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１に係合当接した状態で係合軸１３に対してスライド移動する。
本発明の上記の構成によれば、前記アーム部１６Ａ，１６Ｂの断面略半円形状の外周面の曲面１６Ａ１，１６Ｂ１は、前記拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１に係合当接しているから、上記のスライド移動時に、アーム部１６Ａ，１６Ｂの断面略半円形状の外周面の曲面１６Ａ１，１６Ｂ１と、拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１とが点接触し、係合当接状態を維持できる。その結果、振動等によるリンクアーム１４と縦フィン１２とのガタツキが抑えられ、ラトル音の発生を防止することができる。 (2) When the operator rotates the operation knob 15 around the horizontal axis O1, the arms 16A and 16B rotate around the third axis O3 while the arms 16A and 16B have a substantially semicircular cross section. The outer peripheral curved surfaces 16A1 and 16B1 slide and move with respect to the engagement shaft 13 in a state of engaging with and in contact with the outer peripheral surfaces 20B1 and 20C1 of the enlarged diameter portions 20B and 20C of the engagement shaft 13.
According to the above configuration of the present invention, the curved surfaces 16A1 and 16B1 of the outer peripheral surfaces having a substantially semicircular cross section of the arm portions 16A and 16B are engaged with and contacted with the outer peripheral surfaces 20B1 and 20C1 of the enlarged diameter portions 20B and 20C. Therefore, during the sliding movement, the curved surfaces 16A1 and 16B1 of the outer peripheral surfaces having substantially semicircular cross sections of the arm portions 16A and 16B and the outer peripheral surfaces 20B1 and 20C1 of the enlarged diameter portions 20B and 20C are in point contact with each other. The abutting state can be maintained. As a result, rattling between the link arm 14 and the vertical fins 12 due to vibration or the like is suppressed, and rattle noise can be prevented.

（３）前記係合軸１３の一対の拡径部２０Ｂ，２０Ｃは、操作ノブ１５を前記横軸芯Ｏ１周りに回転操作した場合にリンクアーム１４の一対のアーム部１６Ａ，１６Ｂを支持する支持部（支点）となる。この支持部は位置固定状態にあることから、リンクアーム１４が上下に大きく移動することを抑制することができ、リンクアーム１４が不必要にバタつかなくなる。結果的に、バタつき音を低減できる。
また、リンクアーム１４が上下に大きく移動しないので、大きな切り欠きを必要とせず、第３切り欠き１２Ｋ２の開口量を減らすことができる。結果的に、ルーバー１から吹き出す風の指向性を向上させることができる。 (3) The pair of enlarged diameter portions 20B and 20C of the engagement shaft 13 support the pair of arm portions 16A and 16B of the link arm 14 when the operation knob 15 is rotated around the horizontal axis O1. Part (fulcrum). Since this support portion is in a fixed position, it is possible to suppress the link arm 14 from moving greatly up and down, and the link arm 14 will not unnecessarily flutter. As a result, the fluttering sound can be reduced.
Moreover, since the link arm 14 does not move greatly up and down, a large cutout is not required, and the opening amount of the third cutout 12K2 can be reduced. As a result, the directivity of the wind blown from the louver 1 can be improved.

（４）拡径部２０Ｂ，２０Ｃは部分球状に形成されているから、アーム部１６Ａ，１６Ｂの断面略半円形状の外周面の曲面１６Ａ１，１６Ｂ１が受ける前記拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１からの抵抗を少なくすることができる。その結果、アーム部１６Ａ，１６Ｂの断面略半円形状の外周面の曲面１６Ａ１，１６Ｂ１を、前記拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１に対して、より円滑にスライド移動させることができる。 (4) Since the enlarged diameter portions 20B and 20C are formed in a partial spherical shape, the outer peripheral surfaces of the enlarged diameter portions 20B and 20C received by the curved surfaces 16A1 and 16B1 of the outer peripheral surfaces having substantially semicircular cross sections of the arm portions 16A and 16B. Resistance from 20B1 and 20C1 can be reduced. As a result, the curved surfaces 16A1, 16B1 of the outer peripheral surfaces having substantially semicircular cross sections of the arm portions 16A, 16B can be slid more smoothly with respect to the outer peripheral surfaces 20B1, 20C1 of the enlarged diameter portions 20B, 20C. .

（５）図５，図６（ａ），図６（ｂ）に示すように、操作ノブ１５を横軸芯Ｏ１周りに上方に回転操作した場合、一方のアーム部１６Ａの、上側に凸の断面半円形状の外周面の曲面１６Ａ１と、上下一対の拡径部２０Ｂ，２０Ｃのうち上側の拡径部２０Ｂの外周面２０Ｂ１との係合当接個所が支点となる。そして、アーム部１６Ａ，１６Ｂが第３軸芯Ｏ３周りに回転しながら、前記アーム部１６Ａの、上側に凸の断面半円形状の外周面の曲面１６Ａ１が、前記上側の拡径部２０Ｂの外周面２０Ｂ１に対して円滑にスライド移動する。
また、図５，図６（ａ），図６（ｃ）に示すように、操作ノブ１５を横軸芯Ｏ１周りに下方に回転操作した場合、他方のアーム部１６Ｂの、下側に凸の断面半円形状の外周面の曲面１６Ｂ１と、上下一対の拡径部２０Ｂ，２０Ｃのうち下側の拡径部２０Ｃの外周面２０Ｃ１との係合当接個所が支点となる。そして、アーム部１６Ａ，１６Ｂが第３軸芯Ｏ３周りに回転しながら、前記アーム部１６Ｂの、下側に凸の断面半円形状の外周面の曲面１６Ｂ１が、前記下側の拡径部２０Ｃの外周面２０Ｃ１に対して円滑にスライド移動する。
このように、操作ノブ１５を上下いずれの方向に回転操作しても、アーム部１６Ａ，１６Ｂの外周面の曲面１６Ａ１，１６Ｂ１が前記拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１に接しながら、アーム部１６Ａ，１６Ｂが拡径部２０Ｂ，２０Ｃの外周面２０Ｂ１，２０Ｃ１に対して円滑にスライド移動するため、両外周面の接触面積を低減できる。結果的に、擦れ音が発生する原因となる接触面積が少なくなり、操作ノブ１５を回転操作した場合の係合軸１３とリンクアーム１４の擦れ音を低減できる。 (5) As shown in FIGS. 5, 6 (a) and 6 (b), when the operation knob 15 is rotated upward around the horizontal axis O1, one arm portion 16A is convex upward. An engagement contact point between the curved surface 16A1 of the outer peripheral surface having a semicircular cross section and the outer peripheral surface 20B1 of the upper enlarged portion 20B of the upper and lower diameter enlarged portions 20B and 20C serves as a fulcrum. Then, while the arm portions 16A and 16B rotate around the third axis O3, the curved surface 16A1 of the semicircular outer peripheral surface of the arm portion 16A that protrudes upward is the outer periphery of the upper enlarged diameter portion 20B. Smoothly slide relative to the surface 20B1.
Further, as shown in FIGS. 5, 6A, and 6C, when the operation knob 15 is rotated downward around the horizontal axis O1, the other arm portion 16B is convex downward. An engagement contact point between the curved surface 16B1 of the outer peripheral surface having a semicircular cross section and the outer peripheral surface 20C1 of the lower enlarged portion 20C of the pair of upper and lower enlarged diameter portions 20B and 20C serves as a fulcrum. Then, while the arm portions 16A and 16B rotate around the third axis O3, the curved surface 16B1 of the outer circumferential surface having a semicircular sectional shape convex to the lower side of the arm portion 16B becomes the lower-diameter expanded portion 20C. Smoothly slide relative to the outer peripheral surface 20C1.
As described above, even if the operation knob 15 is rotated in any direction up and down, the curved surfaces 16A1 and 16B1 of the outer peripheral surfaces of the arm portions 16A and 16B are in contact with the outer peripheral surfaces 20B1 and 20C1 of the enlarged diameter portions 20B and 20C. Since the arm portions 16A and 16B slide smoothly with respect to the outer peripheral surfaces 20B1 and 20C1 of the enlarged diameter portions 20B and 20C, the contact area between both outer peripheral surfaces can be reduced. As a result, the contact area that causes the generation of rubbing noise is reduced, and the rubbing noise between the engagement shaft 13 and the link arm 14 when the operation knob 15 is rotated can be reduced.

（６）図６（ａ），図６（ｃ）に示すように、例えば、操作ノブ１５を下方に大きく回転操作して、アーム部１６Ｂの略半円形状の外周面のコーナー部Ｃが係合軸１３の拡径部２０Ｃに接触した場合、コーナー部Ｃは円弧状であるから、異音や擦れ音を低減できる。 (6) As shown in FIGS. 6 (a) and 6 (c), for example, the operation knob 15 is largely rotated downward to engage the corner portion C of the substantially semicircular outer peripheral surface of the arm portion 16B. When contacting the enlarged diameter portion 20 C of the combined shaft 13, the corner portion C has an arc shape, so that abnormal noise and rubbing noise can be reduced.

２ルーバーケース
４Ｋ開口（ルーバーケースの開口）
１１第１フィン（横フィン）
１２第２フィン（縦フィン）
１２Ｋ２切り欠き（第３切り欠き）
１３係合軸
１４リンクアーム
１５操作ノブ
１６Ａアーム部
１６Ａ１アーム部の断面略半円形状の外周面の曲面
１６Ｂアーム部
１６Ｂ１アーム部の断面略半円形状の外周面の曲面
２０くびれ部
２０Ａ縮径部
２０Ｂ拡径部
２０Ｃ拡径部
２０Ｂ１拡径部の外周面
２０Ｃ１拡径部の外周面
Ｃコーナー部
Ｊ軸芯方向（係合軸の軸芯方向）
Ｏ１第１軸芯
Ｏ２第２軸芯
Ｏ３第３軸芯 2 Louver case 4K opening (louver case opening)
11 First fin (horizontal fin)
12 Second fin (vertical fin)
12K2 cutout (third cutout)
13 Engagement shaft 14 Link arm 15 Operation knob 16A Arm part 16A1 Curved surface 16B of arm part with a substantially semicircular outer peripheral surface Arm part 16B1 Curved surface 20 with a substantially semicircular outer surface of the arm part Constricted part 20A Portion 20B Expanded portion 20C Expanded portion 20B1 Expanded portion outer peripheral surface 20C1 Expanded portion outer peripheral surface C Corner portion J Axial direction (axial center direction of engagement shaft)
O1 1st axis O2 2nd axis O3 3rd axis

Claims

A plurality of first fins facing the fin surfaces are accommodated on the opening side in the louver case,
The fin surfaces are opposed to each other, and a plurality of second fins along a direction intersecting with the plurality of first fins are accommodated in the back side in the louver case rather than the plurality of first fins,
Each first fin is supported by the louver case so as to be rotatable around a first axis along the longitudinal direction of each first fin,
When one first fin of the plurality of first fins rotates about the first axis, the remaining first fins rotate in conjunction with each other around the first axis. Are linked,
Each second fin is supported by the louver case so as to be rotatable around a second axis along the longitudinal direction of each second fin,
When one second fin of the plurality of second fins rotates around the second axis, the remaining second fins also rotate together around the second axis so that the plurality of second fins Are linked,
An operation knob is attached to the first fin,
The operation knob is configured to be rotatable integrally with the first fin around the first axis, and is configured to be slidable in the longitudinal direction of the first fin with respect to the first fin.
A cutout opening toward the first fin is formed in the one second fin,
An engagement shaft is bridged between a pair of opening end portions facing each other of the notch,
A link arm is connected to the rear end of the operation knob, and the link arm extends from the rear end of the operation knob to the rear of the operation knob.
The link arm is configured to be rotatable around a third axis along the first axis with respect to the operation knob,
A pair of arm portions provided on the link arm engage the engagement shaft with the engagement shaft sandwiched in the direction along the third axis,
The pair of arm portions is configured to be slidable in the longitudinal direction of the arm portion with respect to the engagement shaft,
When the operation knob is rotated around the first axis integrally with the first fin, the one second fin does not rotate around the second axis, and other than the first fin. Only the first fin rotates together around the first axis,
When the operation knob is slid with respect to the first fin, the one second fin rotates together with the second axis, and the second fin other than the one second fin is the second fin. A louver structure that rotates in conjunction with the axis,
The arm portion is formed in a substantially semicircular shape convex in a direction corresponding to the axial direction of the engagement shaft in a cross section viewed from the longitudinal direction of the arm portion,
A constriction is provided in the longitudinal intermediate portion of the engagement shaft,
A louver structure in which a curved surface of an outer peripheral surface having a substantially semicircular cross section of the arm portion engages and contacts the constricted portion.

The constricted portion includes a reduced diameter portion, and an enlarged diameter portion that smoothly increases in diameter from the reduced diameter portion toward the end side in the axial direction of the engagement shaft,
2. The louver structure according to claim 1, wherein a curved surface of the outer peripheral surface having a substantially semicircular cross section of the arm portion is engaged with and abutted on the outer peripheral surface of the enlarged diameter portion.

The constricted portion includes a reduced diameter portion and a pair of enlarged diameter portions that smoothly expand from the reduced diameter portion toward both end portions in the axial direction of the engagement shaft,
The curved surface of the outer peripheral surface having a substantially semicircular cross section of one arm portion of the pair of arm portions engages and abuts on the outer peripheral surface of the one enlarged diameter portion of the pair of enlarged diameter portions, and the other arm. The louver structure according to claim 1, wherein the curved surface of the outer peripheral surface having a substantially semicircular cross section is engaged and abutted with the outer peripheral surface of the other enlarged diameter portion.

The louver structure according to claim 2 or 3, wherein the enlarged-diameter portion is formed in a partial spherical shape.

The louver structure according to any one of claims 1 to 4, wherein the pair of arm portions are formed in a substantially semicircular shape protruding in opposite directions in a cross section viewed from the longitudinal direction of the arm portions.

The louver structure according to any one of claims 1 to 5, wherein a corner portion of the outer peripheral surface having a substantially semicircular cross section of the arm portion is formed in an arc shape.