JP3606350B2

JP3606350B2 - Wiper device for vehicle

Info

Publication number: JP3606350B2
Application number: JP21283497A
Authority: JP
Inventors: 寿行芹沢
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1997-08-07
Filing date: 1997-08-07
Publication date: 2005-01-05
Anticipated expiration: 2017-08-07
Also published as: JPH1148917A

Description

【０００１】
【発明の属する技術分野】
本発明は、車両のウインドシールドの表面に付着する雨水，雪，泥土，塵埃その他の異物を自動的に払拭するワイパー装置に関する。
【０００２】
【従来の技術】
ワイパー装置は、一般に車両の車体パネルに取り付けられるピボットホルダーにピボット軸が軸支され、ピボット軸の外側へ突出した端部にワイパーアームの基端部が固着され、同ワイパーアームの揺動する先端に取り付けられたワイパーブレードがウインドシールド表面を払拭する構造のものである。
【０００３】
したがってワイパーブレードおよびワイパーアームはウインドシールドの外側にあり、ワイパーアームが固着されるピボット軸の端部は、車体表面より外側に突出している。
【０００４】
【発明が解決しようとする課題】
したがってワイパーアームおよびピボット軸端部は、外部からの衝撃荷重を受け易い。
この衝撃荷重をまともに受けると破損等の被害が大きい。
【０００５】
【課題を解決するための手段および作用効果】
上記目的を達成するために、本発明は、ワイパーアームの揺動によりその先端に取り付けられたワイパーブレードがウインドシールドを払拭する車両用ワイパー装置において、
前記ワイパーアームの基端部が固着されるピボット軸を回転自在に軸支するピボットホルダーが外周に雄ねじを形成した円筒軸受部とフランジ部とからなり、前記ピボットホルダーの円筒軸受部を車体パネルの開口に貫通し、同開口の周縁部に対して内面に前記ピボットホルダーのフランジ部を当接し、外面に環状係止板を挟んでナットを前記円筒軸受部に螺合し、前記ナットは前記車体パネルの開口の内径より小さい外径を有して前記環状係止板の内周縁部分を締付けて環状係止板を介してピボットホルダーを支持し、前記ピボット軸に過大の荷重が加わると、前記ナットにより締付けられている前記環状係止板の内周縁部分が変形して支持が解かれて前記ピボットホルダーが車体内方に移動可能となる車両用ワイパー装置とした。
【０００６】
【課題を解決するための手段および作用効果】
上記目的を達成するために、本発明は、ワイパーアームの揺動によりその先端に取り付けられたワイパーブレードがウインドシールドを払拭する車両用ワイパー装置において、前記ワイパーアームの基端部が固着されるピボット軸を回転自在に軸支するピボットホルダーが外周に雄ねじを形成した円筒軸受部とフランジ部とからなり、前記ピボットホルダーの円筒軸受部を車体パネルの開口に貫通し、同開口の周縁部に対して内面に前記ピボットホルダーのフランジ部を当接し、外面に環状係止板を挟んでナットを前記円筒軸受部に螺合し、前記ナットは前記車体パネルの開口の内径より小さい外径を有して前記環状係止板の内周縁部分を締付けて環状係止板を介してピボットホルダーを支持する車両用ワイパー装置とした。
【０００７】
車両外方からワイパーアームの基端部のピボット軸に過大の荷重が加わると、ナットにより締付けられている環状係止板の内周縁部分が変形してピボットホルダーの支持が解かれ車体内方に移動して衝撃荷重を吸収することができ、被害を最小限に抑えることができる。
【０００８】
請求項２記載の発明は、ワイパーアームの揺動によりその先端に取り付けられたワイパーブレードがウインドシールドを払拭する車両用ワイパー装置において、前記ワイパーアームの基端部が固着されるピボット軸を回転自在に軸支するピボットホルダーが筒状軸受部とフランジ部とからなり、車体パネルの開口の周縁部に対して内面に前記ピボットホルダーのフランジ部を当接し、外面に環状係止板を挟んでボルトを前記フランジ部に螺合し、前記ボルトの頭部は前記車体パネルの開口の内径より小さい外径を有して前記環状係止板の内周縁部分を締付けて環状係止板を介してピボットホルダーを支持し、前記ピボット軸に過大の荷重が加わると、前記ボルトにより締付けられている前記環状係止板の内周縁部分が変形して支持が解かれて前記ピボットホルダーが車体内方に移動可能となる車両用ワイパー装置とした。
【０００９】
車両外方からワイパーアームの基端部のピボット軸に過大の荷重が加わると、ボルトにより締付けられている環状係止板の内周縁部分が変形してピボットホルダーの支持が解かれ車体内方に移動して衝撃荷重を吸収することができ、被害を最小限に抑えることができる。
【００１０】
請求項３記載の発明は、請求項１または請求項２記載の車両用ワイパー装置において、前記車体パネルの開口の周縁部分と前記ピボットホルダーのフランジ部との間に弾性部材を介装したものである。
【００１１】
車両外方からピボット軸に軸方向といくらかでも異なる方向に荷重があると、ピボットホルダーが傾むいたりするが、このピボットホルダーを傾ける比較的小さい荷重は、車体パネルとピボットホルダーのフランジ部との間に介装された弾性部材が吸収してピボットホルダーの支持が確保され、また車体パネルの振動やワイパーアームの揺動に伴う振動等を吸収することができる。
【００１２】
請求項４記載の発明は、ワイパーアームの揺動によりその先端に取り付けられたワイパーブレードがウインドシールドを払拭する車両用ワイパー装置において、前記ワイパーアームの基端部が固着されるピボット軸を回転自在に軸支するピボットホルダーが筒状軸受部と同筒状軸受部から延出した少なくとも２本のアーム部とからなり、前記ピボットホルダーのアーム部は前記ピボット軸に直角方向に指向した中心軸を有する筒状取付部を有し、前記筒状取付部の一部にその内径より幅の小さい開口が形成され、車体パネルの内面に突設された取付ボス部に前記ピボットホルダーのアーム部の筒状取付部を側方から当接しボルトを貫通させて取付ボス部に螺着し前記筒状取付部を前記ボルトに係合してピボットホルダーを支持し、前記ピボット軸に過大の荷重が加わると、前記筒状取付部が開口を開くように変形して前記ボルトから外れ前記ピボットホルダーが脱落可能である車両用ワイパー装置とした。
【００１３】
車両外方からワイパーアームの基端部のピボット軸に過大の荷重が加わると、ボルトに筒状取付部が係合して支持されたピボットホルダーのその筒状取付部は、その開口を開くように変形してボルトから外れピボットホルダーが脱落し衝撃荷重を吸収することができる。
【００１４】
請求項５記載の発明は、ワイパーアームの揺動によりその先端に取り付けられたワイパーブレードがウインドシールドを払拭する車両用ワイパー装置において、前記ワイパーアームの基端部が固着されるピボット軸を回転自在に軸支するピボットホルダーが筒状軸受部とフランジ部とからなり、前記フランジ部の前記筒状軸受部の周りに肉厚の薄い破断強度の低い部位を形成し、前記ピボットホルダーを外側から覆い車体パネルの開口の周縁部に取り付ける取付部材が筒状支持部とフランジ取付部とからなり、その筒状支持部で前記ピボットホルダーの筒状軸受部を軸方向の相対移動可能に覆い、そのフランジ取付部で車体パネルの開口の周縁部外面との間に前記ピボットホルダーのフランジ部を挟んで車体パネルに共に固着し、前記ピボット軸に過大の荷重が加わると、前記筒状軸受部の周りの肉厚の薄い破断強度の低い部位が破断され前記ピボットホルダーが脱落可能である車両用ワイパー装置とした。
【００１５】
車両外方からワイパーアームの基端部のピボット軸に過大の荷重が加わると、ピボットホルダーの筒状軸受部に力がかかり、その筒状軸受部の周りの肉厚の薄い破断強度の低い部位が破断され、ピボットホルダーが車体内方に脱落して衝撃荷重を吸収することができる。
【００１６】
請求項６記載の発明は、請求項５記載の車両用ワイパー装置において、前記ピボットホルダーのフランジ部の筒状軸受部の周りに貫通孔を形成し、前記支持部材の筒状支持部が部分的に前記ピボットホルダーの筒状軸受部に沿って延出して前記貫通孔を貫通し前記車体パネルの開口より内側に延びたものである。
【００１７】
支持部材が部分的にピボットホルダーの筒状軸受部に沿って延出して貫通孔を貫通し車体パネルの開口より内側にまで延びているので、筒状軸受部を確実に支持するとともに、車両外方からワイパーアームの基端部のピボット軸に過大の荷重が加わると、筒状軸受部の周りの肉厚の薄い破断強度の低い部位が破断され、ピボットホルダーが車体内方に脱落して衝撃荷重を吸収することができる。
【００１８】
請求項７記載の発明は、ワイパーアームの揺動によりその先端に取り付けられたワイパーブレードがウインドシールドを払拭する車両用ワイパー装置において、前記ワイパーアームの基端部が固着されるピボット軸を回転自在に軸支するピボットホルダーが筒状軸受部からなり、前記ピボットホルダーを外側から覆い車体パネルの開口の周縁部に取り付ける取付部材が筒状支持部とフランジ取付部とからなり、その筒状支持部で前記ピボットホルダーの筒状軸受部を軸方向の相対移動可能に覆い、そのフランジ取付部を車体パネルの開口の周縁部に固着し、前記ピボットホルダーの筒状軸受部と前記取付部材の筒状支持部との間に環状係止部材を係止してピボットホルダーを支持し、前記環状係止部材は上方からの軸方向入力に対して変形または脱落し前記ピボットホルダーの下方への移動を可能とする車両用ワイパー装置とした。
【００１９】
筒状軸受部からなるピボットホルダーを外側から覆い車体パネルの開口の周縁部に取り付ける取付部材が環状係止部材を介してピボットホルダーを支持するので、車両外方からワイパーアームの基端部のピボット軸に過大の荷重が加わると、環状係止部材の内周縁部分が変形してピボットホルダーの支持が解かれ筒状支持部に沿って車体内方に移動して衝撃荷重を吸収することができ、被害を最小限に抑えることができる。
【００２０】
【発明の実施の形態】
以下本発明に係る一実施の形態について図１ないし図４に図示し説明する。
本実施の形態に係るワイパー装置１０を適用した自動車１のフロントウインドシールド２部分の外観を図１に示す。
【００２１】
ワイパー装置１０は、運転席および助手席の前方のフロントウインドシールド２に左右に一対設けられている。
フロントウインドシールド２の表面に摺接するワイパーブレード１１を、ワイパーアーム１２が左右に揺動させて雨水や異物を払拭し良好な視界を確保するものである。
【００２２】
左右のワイパーアーム１２は、揺動中心をフロントウインドシールド２の下縁所定位置にそれぞれ設けており、同時に同じ方向に揺動するタンデムタイプのワイパー装置１０である。
【００２３】
ワイパーアーム１２の基端部を支持するピボット軸２０は、ピボットホルダー２１に回転自在に軸支されており、該ピボットホルダー２１は、ピボット軸２０を軸支する円筒軸受部２２とその外周に延出したフランジ２３とが一体に形成されたものである。
なおピボット軸２０の円筒軸受部２２より下方へ突出した端部には、ピボット軸２０を回動するリンク部材２７が嵌着される。
【００２４】
図４に図示するようにピボットホルダー２１は、円筒軸受部２２からフランジ２３が円錐状に膨出しており、フランジ２３の上面２３ａに円筒軸受部２２の周囲に環状溝２３ｂが形成されている。
円筒軸受部２２は環状溝２３ｂの底部から上の外周面に雄ねじが刻設されている。
【００２５】
かかるピボットホルダー２１は、フロントウインドシールド２の下端縁に連接する車体パネル３に取り付けられ、同車体パネル３の所定箇所にはピボットホルダー２１の環状溝２３ｂの外径に等しい内径の円開口が形成されている。
【００２６】
また図４を参照して環状係止板２４は、ピボットホルダー２１のフランジ２３の上面２３ａに対応して円環状板部２４ａとその内周から円錐状に延出した内周縁部２４ｂとからなり、内周縁部２４ｂには矩形の切欠きが複数形成されて複数の突出片が開き易くなっている。
【００２７】
そして前記ピボットホルダー２１の円筒軸受部２２の雄ねじに螺合するナット２５はフランジ付きナットで、フランジの外径は車体パネル３の円開口の内径より小さい。
【００２８】
ピボットホルダー２１を車体パネル３の内側から円開口に円筒軸受部２２を貫通させてフランジ２３の上面２３ａを当接し、外側から環状係止板２４を円錐状の内周縁部２４ｂを円開口に合わせて当接すると、車体パネル３の開口周縁部がピボットホルダー２１のフランジ２３の上面２３ａと環状係止板２４の円環状板部２４ａとに挟まれ、次いで円筒軸受部２２の雄ねじにナット２５を螺合すると、ナット２５はフランジで環状係止板２４の円錐状の内周縁部２４ｂを締め付け、図２に示すようにナット２５は若干環状溝２３ｂに入り込んで環状係止板２４を介してピボットホルダー２１を車体パネル３に固着支持する。
【００２９】
ピボットホルダー２１は以上のように車体パネル３に取り付けられているので、車両外方からワイパーアーム１２の基端部のピボット軸２０に過大の荷重が加わると、ナット２５により締付けられている環状係止板２４の円錐状をした内周縁部２４ｂが開くように変形してピボットホルダー２１の支持が解かれ図３に示すように車体内方に移動して衝撃荷重を吸収することができ、被害を最小限に抑えることができる。
【００３０】
なお本実施の形態では、ピボットホルダー２１を取り付ける専用のボルトを必要とせず部品点数が少なく、また環状係止板２４だけを交換すれば修復が簡単にできワイパー装置はそのまま再使用することができ費用がかからない。
【００３１】
次に別の実施の形態に係るワイパー装置におけるピボットホルダー３１の取付構造を図５ないし図８に図示し説明する。
ピボット軸３０を軸支する該ピボットホルダー３１は、円筒軸受部３２と同円筒軸受部３２から膨出したフランジ３３からなり、フランジ３３の左右対称位置にねじ孔が形成されている。
【００３２】
一方車体パネル２７の所定箇所には図８に図示するように円開口２８とその両側に小径の円開口２９，２９が穿設されている。
また図７に図示するような環状係止板３４を使用しており、同環状係止板３４は、円環状板部３４ａとその内周縁の複数箇所から延出した係止片３４ｂとからなる。
【００３３】
ピボットホルダー３１を車体パネル３７の内側から円開口３８に円筒軸受部３２を貫通させてフランジ３３をあてがう際に、フランジ３３の左右のねじ孔を各円開口３９，３９に合わせ、円開口３９に内径が等しい環状ラバー部材３５，３５をそれぞれ間に介装する。
【００３４】
そして車体パネル３７の外側から環状係止板３４，３４を各円開口３９，３９に合わせボルト３６，３６を環状係止板３４，３４，円開口３９，３９，環状ラバー部材３５，３５に貫通させフランジ３３の各ねじ孔に螺合して締め付けることにより、ボルト３６の開口３９の内径より小径の頭部が環状係止板３４の係止片３４ｂを円開口３９および環状ラバー部材３５内に締め込み、図５に図示するように環状係止板３４を介してピボットホルダー３１が車体パネル３７に取り付けられる。
【００３５】
車両外方からワイパーアームの基端部のピボット軸３０に過大の荷重が加わると、ボルト３６により締付けられている環状係止板３７の内周縁部分の係止片３４ｂが開くように屈曲変形してピボットホルダー３１の支持が解かれ車体内方に移動して衝撃荷重を吸収することができ、被害を最小限に抑えることができる。
【００３６】
車両外方からピボット軸３０に軸方向といくらかでも異なる方向に荷重があると、ピボットホルダー３１が車体パネル３７に対して傾むいたりするが、このピボットホルダー３１を傾ける比較的小さい荷重は、車体パネル３７とピボットホルダー３１のフランジ３３との間に介装された環状ラバー部材３５が吸収してピボットホルダー３１の支持が確保され、また車体パネル３７の振動やワイパーアームの揺動に伴う振動等を吸収することができる。
【００３７】
次に図９ないし図１１に図示した第３の実施の形態について説明する。
ピボット軸４０を軸支した本実施の形態に係るピボットホルダー４１は、円筒軸受部４２と同円筒軸受部４２から対称的に延出した２本のアーム部４３，４３とからなり、アーム部４３の端部はピボット軸４０と直角方向に指向した円筒取付部４４が形成されている。
【００３８】
円筒取付部４４は上方に開口４４ａが形成され、内周面と開口端面にかけてラバー部材４５が付設され、同ラバー部材４５の内周面およびその開口端面に沿ってバネ部材４６が嵌着されている（図１１参照）。
【００３９】
一方車体パネル４７は、所定箇所に円開口４７ａが穿設され、車体パネル４７の内面で円開口４７ａの略両側の所定位置に取付ボス４８，４８が突設されており、取付ボス４８，４８には側面にボルト孔が形成されている。
車体パネル４７の内側から円開口４７ａに円筒軸受部４２を貫通させ両円筒取付部４４，４４を取付ボス４８，４８の側面に当接してボルト４９，４９を円筒取付部４４，４４に貫通させて取付ボス４８，４８のボルト孔に螺合する（図９参照）。
【００４０】
ボルト４９は、円筒取付部４４の内径に等しく開口４４ａの幅より大きい径を有し、取付ボス４８にのみ螺着しピボットホルダー４１の円筒取付部４４を取付ボス４８に締付けることをしない。
したがってピボットホルダー４１は、車体パネル４８の一対の取付ボス４８，４８に突設されたボルト４９，４９にアーム部４３，４３の両端の円筒取付部４４，４４が係合して支持されている。
【００４１】
車両外方からワイパーアームの基端部のピボット軸４０に過大の荷重が加わると、ボルト４９に円筒取付部４４が係合して支持されたピボットホルダー４１のその筒状取付部４４は、ラバー部材４５とバネ部材４６の弾性変形によりバネ部材４６の開口４４ａを開くように変形してボルト４９から外れピボットホルダー４１が脱落し衝撃荷重を吸収することができる。
【００４２】
ピボットホルダー３１を傾ける比較的小さい荷重は、ピボットホルダー４１の円筒取付部４４とボルト４９との間に介装されたラバー部材４５が吸収してピボットホルダー４１の支持が確保され、また車体パネル４７の振動やワイパーアームの揺動に伴う振動等を吸収することができる。
【００４３】
次に図１２および図１３に図示した第４の実施の形態について説明する。
ピボット軸５０を軸支するピボットホルダー５１は、円筒軸受部５２と同円筒軸受部５２から延出した円板状のフランジ５３からなり、同フランジ５３の円筒軸受部５２の周りに破断強度の低い薄肉部５４が形成されている。
フランジ５３には複数個取付孔が穿設されている。
【００４４】
車体パネル５７の所定箇所には円開口５７ａとその周囲に前記ピボットホルダー５２のフランジ５３の取付孔に対応した円孔が形成されている。
そして円筒支持部５５ａとフランジ取付部５５ｂとからなる取付部材５５がピボットホルダー５１を外側から覆い車体パネル５７に取り付ける構造をしている。
【００４５】
すなわちピボットホルダー５１を車体パネル５７に外側から円開口５７ａに円筒軸受部５２を貫通させ同開口５７ａの周縁部にフランジ５３を当接し、その上から取付部材５５が円筒支持部５５ａを円筒軸受部５２に嵌入しフランジ取付部５５ｂをフランジ５３に重ね合わせ、フランジ取付部５５ｂ，フランジ５３，車体パネル５７の一致させた取付孔にボルト５８を外側から貫通させてナット５９を螺合し一体に共締めする（図１２参照）。
【００４６】
こうしてピボットホルダー５１が取り付けられると、ピボット軸５０の軸と直角方向の外力に対しては取付部材５５が強固に支持する。
したがって車両外方からワイパーアームの基端部に過大の荷重が加わったとすると、軸直角方向の力は取付部材５５によって受け止められ、軸方向の力が円筒軸受部５２に作用してフランジ５３の基部に応力が集中して破断強度の低い薄肉部５４を破断して円筒軸受部５２が車体パネル５７の内方に脱落する（図１３参照）。
【００４７】
すねわち衝撃荷重が吸収されて被害を最小限に抑えることができる。
なお破断したのは、ピボットホルダー５１のフランジ５３であるので、ピボットホルダーを交換すれば簡単に修復可能であり、ワイパーアーム等は再使用できる。
【００４８】
フランジ２３の基端部に薄肉部５４を設けたが、薄肉部の代わりに長孔としてもよく、円弧状の長孔を部分的に複数設けた第５の実施の形態を図１４ないし図１６に図示し説明する。
【００４９】
該ピボットホルダー６１は、ピボット軸６０を軸支する円筒軸受部６２とフランジ６３とからなり、フランジ６３の基端の円筒軸受部６２の周りに環状溝６４が形成され、その３カ所に円弧状の長孔６５が穿設されている（図１６参照）。
その他フランジ６３には３カ所取付孔６６が形成されている。
【００５０】
ピボットホルダー６１を車体パネル７０に外側から円開口に円筒軸受部６２を貫通させ同円開口の周縁部にフランジ６３を当接し、その上から取付部材６８が円筒支持部６８ａを円筒軸受部６２に嵌入し、支持片６８ｃを長孔６５に貫通させ、フランジ取付部６８ｂをフランジ６３に重ね合わせ、フランジ取付部６８ｂ，フランジ６３，車体パネル７０の一致させた取付孔にボルト７１を外側から貫通させてナット７２を螺合し一体に共締めする（図１４参照）。
【００５１】
ピボット軸６０の軸と直角方向の外力に対しては取付部材６８が円筒支持部６８ａと支持片６８ｃにより強固に支持する。
車両外方からワイパーアームの基端部に過大の荷重が加わったとすると、軸直角方向の力は取付部材６８によって受け止められ、軸方向の力が円筒軸受部６２に作用してフランジ６３の基部に応力が集中して破断強度の低い環状溝６４を破断して円筒軸受部６２が車体パネル７０の内方に脱落する（図１５参照）。
すねわち衝撃荷重が吸収されて被害を最小限に抑えることができる。
【００５２】
次に図１７ないし図１９に図示した第６の実施の形態について説明する。
ピボット軸８０を軸支するピボットホルダー８１は、円筒軸受部のみからなり、取付部材８５が円筒支持部８５ａと同円筒支持部８５ａの略中央の若干下寄りから延出した円板状のフランジ取付部８５ｂからなり、フランジ取付部８５ｂには取付孔が設けられている。
【００５３】
円筒状をしたピットホルダー８１は、下端に若干のフランジ８１ａを有し、フランジ８１ａから取付部材８５の円筒支持部８５ａの長さ位置に周方向に亙って溝条８１ｂが形成されており、該ピボットホルダー８１に取付部材８５の円筒支持部８５ａが嵌合され、フランジ８１ａに円筒支持部８５ａの下端が当接し、溝条８１ｂに環状係止板８３を嵌着すると、ピボットホルダー８１は取付部材８５の円筒支持部８５ａに上下を環状係止板８３とフランジ８１ａとに挟まれて支持される（図１７参照）。
【００５４】
環状係止板８３は、図１９に図示するように円環状をした板部材であり、一部欠損した開口８３ａを有し、弾性的に変形させて開口８３ａを拡げることができる。
環状係止板８３の内周縁から数箇所係止爪８３ｂが突出している。
かかる環状係止板８３の開口８３ａを拡げてピボットホルダー８１の溝条８１ｂに嵌めると係止爪８３ｂが溝条８１ｂに食い込んで係止され、同環状係止板８３によりピボットホルダー８１が取付部材８５に支持される。
【００５５】
そして取付部材８５は円筒支持部８５ａの下部を車体パネル９０の円開口９０ａに貫通させ、フランジ取付部８５ｂを円開口９０ａの周縁部に当接してボルト９１を貫通させナット９２を螺合して緊締する（図１７参照）。
【００５６】
車両外方からワイパーアームの基端部のピボット軸８０に過大の荷重が加わると、ピボットホルダー８５を支持する環状係止部板８３の内周縁の係止爪８３ｂが開くように屈曲変形してピボットホルダー８５の支持が解かれ円筒支持部８５ａに沿って車体内方に移動して衝撃荷重を吸収することができ、被害を最小限に抑えることができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態に係るワイパー装置を適用した自動車のフロントウインドシールド部分の外観図である。
【図２】ワイパー装置のピボットホルダーの取付構造を示す一部断面とした側面図である。
【図３】同ピボットホルダーが脱落した状態を示す一部断面とした側面図である。
【図４】同ピボットホルダーの取付構造を示す分解斜視図である。
【図５】第２の実施の形態に係るピボットホルダーの取付構造を示す一部断面とした側面図である。
【図６】同ピボットホルダーが脱落した状態を示す一部断面とした側面図である。
【図７】環状係止板の斜視図である。
【図８】車体パネルの平面図である。
【図９】第３の実施の形態に係るピボットホルダーの取付構造を示す部分的に省略した斜視図である。
【図１０】同ピボットホルダーが脱落した状態を示す部分的に省略した斜視図である。
【図１１】円筒取付部の拡大側面図である。
【図１２】第４の実施の形態に係るピボットホルダーの取付構造を示す一部断面とした側面図である。
【図１３】同ピボットホルダーが脱落した状態を示す一部断面とした側面図である。
【図１４】第５の実施の形態に係るピボットホルダーの取付構造を示す一部断面とした側面図である。
【図１５】同ピボットホルダーが脱落した状態を示す一部断面とした側面図である。
【図１６】同ピボットホルダーの平面図である。
【図１７】第６の実施の形態に係るピボットホルダーの取付構造を示す一部断面とした側面図である。
【図１８】同ピボットホルダーが脱落した状態を示す一部断面とした側面図である。
【図１９】環状係止板の斜視図である。
【符号の説明】
１…自動車、２…フロントウインドシールド、３…車体パネル、
１０…ワイパー装置、１１…ワイパーブレード、１２…ワイパーアーム、
２０…ピボット軸、２１…ピボットホルダー、２２…円筒軸受部、２３…フランジ、２４…環状係止板、２５…ナット、２７…リンク、
３０…ピボット軸、３１…ピボットホルダー、３２…円筒軸受部、３３…フランジ、３４…環状係止板、３５…環状ラバー部材、３６…ボルト、３７…車体パネル、３８…円開口、
４０…ピボット軸、４１…ピボットホルダー、４２…円筒軸受部、４３…アーム部、４４…円筒取付部、４５…ラバー部材、４６…バネ部材、４７…車体パネル、４８…取付ボス、４９…ボルト、
５０…ピボット軸、５１…ピボットホルダー、５２…円筒軸受部、５３…フランジ、５４…薄肉部、５５…取付部材、５７…車体パネル、５８…ボルト、５９…ナット、
６０…ピボット軸、６１…ピボットホルダー、６２…円筒軸受部、６３…フランジ、６４…環状溝、６５…長孔、６６…取付孔、６８…取付部材、７０…車体パネル、７１…ボルト、７２…ナット、
８０…ピボット軸、８１…ピボットホルダー、８３…環状係止板、８５…取付部材、９０…車体パネル、９１…ボルト、９２…ナット。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiper device that automatically wipes rainwater, snow, mud, dust and other foreign matters adhering to the surface of a windshield of a vehicle.
[0002]
[Prior art]
In the wiper device, a pivot shaft is generally supported by a pivot holder attached to a vehicle body panel of a vehicle, and a base end portion of the wiper arm is fixed to an end portion protruding to the outside of the pivot shaft. A wiper blade attached to the windshield wipes the windshield surface.
[0003]
Therefore, the wiper blade and the wiper arm are outside the windshield, and the end of the pivot shaft to which the wiper arm is fixed protrudes outward from the vehicle body surface.
[0004]
[Problems to be solved by the invention]
Therefore, the wiper arm and the pivot shaft end are easily subjected to an impact load from the outside.
If this impact load is properly received, damage such as breakage is great.
[0005]
[Means for solving the problems and effects]
To achieve the above object, the present invention provides a vehicle wiper device in which a wiper blade attached to the tip of a wiper arm swings a windshield.
A pivot holder that rotatably supports a pivot shaft to which a base end portion of the wiper arm is fixed includes a cylindrical bearing portion having a male screw formed on the outer periphery and a flange portion, and the cylindrical bearing portion of the pivot holder is connected to the body panel. A flange portion of the pivot holder is in contact with an inner surface with respect to a peripheral portion of the opening, and a nut is screwed into the cylindrical bearing portion with an annular locking plate interposed between the outer surface and the nut. A pivot holder is supported via an annular locking plate by tightening the inner peripheral edge of the annular locking plate having an outer diameter smaller than the inner diameter of the panel opening. When an excessive load is applied to the pivot shaft, the inner peripheral edge portion of the annular locking plate tightened by the nut is deformed to release the support, and the pivot holder can be moved inward of the vehicle body. A vehicle wiper device was obtained.
[0006]
[Means for solving the problems and effects]
In order to achieve the above object, the present invention provides a vehicle wiper device in which a wiper blade attached to a tip of a wiper arm wipes a windshield by swinging the wiper arm, and a pivot to which a base end portion of the wiper arm is fixed. A pivot holder that pivotally supports a shaft is composed of a cylindrical bearing portion having a male screw formed on the outer periphery and a flange portion. The cylindrical bearing portion of the pivot holder passes through the opening of the vehicle body panel, and the peripheral portion of the opening is The flange portion of the pivot holder is brought into contact with the inner surface, the nut is screwed into the cylindrical bearing portion with the annular locking plate sandwiched between the outer surface, and the nut has an outer diameter smaller than the inner diameter of the opening of the vehicle body panel. Thus, the wiper device for a vehicle which supports the pivot holder via the annular locking plate by tightening the inner peripheral edge portion of the annular locking plate.
[0007]
If an excessive load is applied to the pivot shaft at the base end of the wiper arm from the outside of the vehicle, the inner peripheral edge of the annular locking plate that is tightened by the nut will be deformed, and the pivot holder will be unsupported to the inside of the vehicle body. It can move and absorb impact load, minimizing damage.
[0008]
According to a second aspect of the present invention, in the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm wipes the windshield by swinging the wiper arm, the pivot shaft to which the base end portion of the wiper arm is fixed is rotatable. The pivot holder that is pivotally supported is composed of a cylindrical bearing portion and a flange portion. The flange portion of the pivot holder is in contact with the inner peripheral surface of the opening of the vehicle body panel, and an annular locking plate is sandwiched between the bolts. The bolt head has an outer diameter smaller than the inner diameter of the opening of the vehicle body panel, and the inner peripheral edge of the annular locking plate is tightened to pivot through the annular locking plate. Support holder When an excessive load is applied to the pivot shaft, the inner peripheral edge portion of the annular locking plate tightened by the bolt is deformed to release the support, and the pivot holder can move inward of the vehicle body. A vehicle wiper device was obtained.
[0009]
When an excessive load is applied to the pivot shaft at the base end of the wiper arm from the outside of the vehicle, the inner peripheral edge of the annular locking plate tightened by the bolt is deformed and the support of the pivot holder is released and the inside of the vehicle body is released. It can move and absorb impact load, minimizing damage.
[0010]
According to a third aspect of the present invention, in the vehicle wiper device according to the first or second aspect, an elastic member is interposed between the peripheral portion of the opening of the vehicle body panel and the flange portion of the pivot holder. is there.
[0011]
If a load is applied to the pivot shaft from the outside of the vehicle in a direction that is somewhat different from the axial direction, the pivot holder will tilt, but the relatively small load that tilts this pivot holder will cause a relatively small load between the body panel and the flange of the pivot holder. The elastic member interposed therebetween absorbs the pivot holder so that the pivot holder is supported, and the vibration of the body panel and the vibration of the wiper arm can be absorbed.
[0012]
According to a fourth aspect of the present invention, in the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm wipes the windshield by swinging the wiper arm, the pivot shaft to which the base end portion of the wiper arm is fixed is rotatable. A pivot holder pivotally supported by the shaft comprises a cylindrical bearing portion and at least two arm portions extending from the cylindrical bearing portion, and the arm portion of the pivot holder has a central axis oriented in a direction perpendicular to the pivot shaft. An opening having a width smaller than the inner diameter is formed in a part of the cylindrical mounting portion, and the cylinder of the arm portion of the pivot holder is mounted on a mounting boss portion protruding from the inner surface of the vehicle body panel. Attaching the cylindrical mounting part from the side, penetrating the bolt and screwing it onto the mounting boss, engaging the cylindrical mounting part with the bolt to support the pivot holder When an excessive load is applied to the pivot shaft, the cylindrical mounting portion is deformed so as to open an opening, so that the pivot holder can be detached from the bolt. A vehicle wiper device was obtained.
[0013]
When an excessive load is applied to the pivot shaft at the base end portion of the wiper arm from the outside of the vehicle, the cylindrical mounting portion of the pivot holder supported by engaging the cylindrical mounting portion with the bolt opens the opening. It will be deformed into the bolt and the pivot holder will fall off to absorb the impact load.
[0014]
According to a fifth aspect of the present invention, in the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm wipes the windshield by swinging the wiper arm, the pivot shaft to which the base end portion of the wiper arm is fixed is rotatable. A pivot holder pivotally supported by a cylindrical bearing portion and a flange portion is formed with a thin thin portion having a low breaking strength around the cylindrical bearing portion of the flange portion, and the pivot holder is covered from the outside. A mounting member to be attached to the peripheral edge of the opening of the vehicle body panel is composed of a cylindrical support portion and a flange mounting portion, and the cylindrical support portion covers the cylindrical bearing portion of the pivot holder so as to be capable of relative movement in the axial direction. Attach the pivot holder flange part between the mounting part and the outer peripheral surface of the opening of the body panel, and fix it together to the body panel. When an excessive load is applied to the pivot shaft, the thin thin portion with a low breaking strength around the cylindrical bearing portion is broken and the pivot holder can be dropped. A vehicle wiper device was obtained.
[0015]
When an excessive load is applied to the pivot shaft at the base end of the wiper arm from the outside of the vehicle, a force is applied to the cylindrical bearing portion of the pivot holder, and the portion around the cylindrical bearing portion is thin and has a low breaking strength. Is broken, and the pivot holder falls off inward of the vehicle body to absorb the impact load.
[0016]
According to a sixth aspect of the present invention, in the vehicle wiper device according to the fifth aspect, a through hole is formed around the cylindrical bearing portion of the flange portion of the pivot holder, and the cylindrical support portion of the support member is partially It extends along the cylindrical bearing portion of the pivot holder, penetrates the through hole, and extends inward from the opening of the vehicle body panel.
[0017]
Since the support member partially extends along the cylindrical bearing portion of the pivot holder and extends through the through hole to the inside of the opening of the vehicle body panel, the cylindrical support portion is securely supported, and If an excessive load is applied to the pivot shaft at the base end of the wiper arm from the side, the thin thin part with low breaking strength around the cylindrical bearing part is broken, and the pivot holder falls off inward of the vehicle body. The load can be absorbed.
[0018]
According to a seventh aspect of the present invention, in the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm wipes the windshield by swinging the wiper arm, the pivot shaft to which the base end portion of the wiper arm is fixed is rotatable. The pivot holder that pivotally supports the cylindrical bearing portion, and the mounting member that covers the pivot holder from the outside and is attached to the peripheral edge of the opening of the vehicle body panel includes the cylindrical support portion and the flange mounting portion. Covering the cylindrical bearing portion of the pivot holder so as to be relatively movable in the axial direction, and fixing the flange mounting portion to the peripheral edge of the opening of the vehicle body panel, the cylindrical bearing portion of the pivot holder and the cylindrical shape of the mounting member An annular locking member is locked between the support portion and the pivot holder, and the annular locking member is deformed with respect to the axial input from above. And the vehicle wiper device that enables downward movement of the pivot holder and shedding.
[0019]
Since the mounting member that covers the pivot holder consisting of the cylindrical bearing portion from the outside and attaches to the peripheral edge of the opening of the vehicle body panel supports the pivot holder via the annular locking member, the pivot of the base end portion of the wiper arm from the outside of the vehicle If an excessive load is applied to the shaft, the inner peripheral edge of the annular locking member is deformed, the support of the pivot holder is released, and the impact load can be absorbed by moving toward the inside of the vehicle body along the cylindrical support portion. , Can minimize the damage.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows an appearance of a front windshield 2 portion of an automobile 1 to which a wiper device 10 according to the present embodiment is applied.
[0021]
A pair of wiper devices 10 are provided on the left and right of the front windshield 2 in front of the driver seat and the passenger seat.
The wiper blade 11 slidably in contact with the surface of the front windshield 2 is swung left and right to wipe away rainwater and foreign matter to ensure a good field of view.
[0022]
The left and right wiper arms 12 are tandem type wiper devices 10 each having a swing center at a predetermined position on the lower edge of the front windshield 2 and swinging in the same direction at the same time.
[0023]
A pivot shaft 20 that supports the base end portion of the wiper arm 12 is rotatably supported by a pivot holder 21. The pivot holder 21 extends to a cylindrical bearing portion 22 that supports the pivot shaft 20 and an outer periphery thereof. The protruding flange 23 is integrally formed.
A link member 27 that rotates the pivot shaft 20 is fitted to an end portion of the pivot shaft 20 that protrudes downward from the cylindrical bearing portion 22.
[0024]
As shown in FIG. 4, in the pivot holder 21, the flange 23 bulges out in a conical shape from the cylindrical bearing portion 22, and an annular groove 23 b is formed around the cylindrical bearing portion 22 on the upper surface 23 a of the flange 23.
The cylindrical bearing portion 22 has a male screw engraved on the outer peripheral surface above the bottom of the annular groove 23b.
[0025]
The pivot holder 21 is attached to the vehicle body panel 3 connected to the lower edge of the front windshield 2, and a circular opening having an inner diameter equal to the outer diameter of the annular groove 23 b of the pivot holder 21 is formed at a predetermined position of the vehicle body panel 3. Has been.
[0026]
Referring to FIG. 4, the annular locking plate 24 includes an annular plate portion 24 a corresponding to the upper surface 23 a of the flange 23 of the pivot holder 21 and an inner peripheral edge portion 24 b extending conically from its inner periphery. The inner peripheral edge 24b is formed with a plurality of rectangular notches so that the plurality of protruding pieces can be easily opened.
[0027]
The nut 25 screwed into the male screw of the cylindrical bearing portion 22 of the pivot holder 21 is a nut with a flange, and the outer diameter of the flange is smaller than the inner diameter of the circular opening of the vehicle body panel 3.
[0028]
The pivot holder 21 is passed through the cylindrical bearing 22 through the circular opening from the inside of the vehicle body panel 3 to contact the upper surface 23a of the flange 23, and the annular locking plate 24 is aligned with the circular inner peripheral edge 24b from the outside to the circular opening. The peripheral edge of the opening of the vehicle body panel 3 is sandwiched between the upper surface 23 a of the flange 23 of the pivot holder 21 and the annular plate portion 24 a of the annular locking plate 24, and then a nut 25 is attached to the male screw of the cylindrical bearing portion 22. When screwed, the nut 25 tightens the conical inner peripheral edge 24b of the annular locking plate 24 with a flange, and the nut 25 slightly enters the annular groove 23b and pivots via the annular locking plate 24 as shown in FIG. The holder 21 is fixedly supported on the vehicle body panel 3.
[0029]
Since the pivot holder 21 is attached to the vehicle body panel 3 as described above, when an excessive load is applied to the pivot shaft 20 at the base end portion of the wiper arm 12 from the outside of the vehicle, the annular engagement is tightened by the nut 25. The conical inner peripheral edge 24b of the stop plate 24 is deformed so as to be opened, the support of the pivot holder 21 is released, and the impact load can be absorbed by moving inward of the vehicle body as shown in FIG. Can be minimized.
[0030]
In this embodiment, a dedicated bolt for attaching the pivot holder 21 is not required, the number of parts is small, and if only the annular locking plate 24 is replaced, the repair can be easily performed and the wiper device can be reused as it is. There is no cost.
[0031]
Next, the mounting structure of the pivot holder 31 in the wiper apparatus according to another embodiment will be described with reference to FIGS.
The pivot holder 31 that supports the pivot shaft 30 includes a cylindrical bearing portion 32 and a flange 33 that bulges from the cylindrical bearing portion 32, and screw holes are formed at symmetrical positions of the flange 33.
[0032]
On the other hand, as shown in FIG. 8, circular openings 28 and small-diameter circular openings 29 and 29 are formed on both sides of the vehicle body panel 27 at predetermined positions.
Further, an annular locking plate 34 as shown in FIG. 7 is used, and the annular locking plate 34 includes an annular plate portion 34a and locking pieces 34b extending from a plurality of locations on the inner peripheral edge thereof. .
[0033]
When the pivot holder 31 is passed through the cylindrical opening 32 from the inside of the vehicle body panel 37 to the circular opening 38 and the flange 33 is applied, the left and right screw holes of the flange 33 are aligned with the circular openings 39, 39. Annular rubber members 35, 35 having the same inner diameter are interposed therebetween.
[0034]
Then, the annular locking plates 34, 34 are aligned with the respective circular openings 39, 39 from the outside of the vehicle body panel 37, and the bolts 36, 36 are passed through the annular locking plates 34, 34, the circular openings 39, 39, and the annular rubber members 35, 35. By screwing and tightening each screw hole of the flange 33, the head having a smaller diameter than the inner diameter of the opening 39 of the bolt 36 causes the locking piece 34b of the annular locking plate 34 to enter the circular opening 39 and the annular rubber member 35. The pivot holder 31 is attached to the vehicle body panel 37 via the annular locking plate 34 as shown in FIG.
[0035]
When an excessive load is applied to the pivot shaft 30 at the base end portion of the wiper arm from the outside of the vehicle, it is bent and deformed so that the locking piece 34b of the inner peripheral edge portion of the annular locking plate 37 fastened by the bolt 36 is opened. Thus, the pivot holder 31 is unsupported and moved inward of the vehicle body to absorb the impact load, thereby minimizing damage.
[0036]
If a load is applied to the pivot shaft 30 from the outside of the vehicle in a direction that is somewhat different from the axial direction, the pivot holder 31 tilts with respect to the vehicle body panel 37. The annular rubber member 35 interposed between the panel 37 and the flange 33 of the pivot holder 31 absorbs the support of the pivot holder 31 to ensure the vibration of the vehicle body panel 37 and the vibration of the wiper arm. Can be absorbed.
[0037]
Next, a third embodiment shown in FIGS. 9 to 11 will be described.
A pivot holder 41 according to the present embodiment that pivotally supports a pivot shaft 40 includes a cylindrical bearing portion 42 and two arm portions 43, 43 extending symmetrically from the cylindrical bearing portion 42. A cylindrical mounting portion 44 oriented in a direction perpendicular to the pivot shaft 40 is formed at the end of the shaft.
[0038]
The cylindrical mounting portion 44 has an opening 44a formed on the upper side, and a rubber member 45 is provided between the inner peripheral surface and the opening end surface. A spring member 46 is fitted along the inner peripheral surface of the rubber member 45 and the opening end surface. (See FIG. 11).
[0039]
On the other hand, the vehicle body panel 47 has a circular opening 47a formed at a predetermined location, and mounting bosses 48, 48 project from predetermined positions on both sides of the circular opening 47a on the inner surface of the vehicle body panel 47. Bolt holes are formed on the side surfaces.
The cylindrical bearing portion 42 is passed through the circular opening 47a from the inside of the vehicle body panel 47, both cylindrical mounting portions 44, 44 are brought into contact with the side surfaces of the mounting bosses 48, 48, and the bolts 49, 49 are passed through the cylindrical mounting portions 44, 44. Are screwed into the bolt holes of the mounting bosses 48 (see FIG. 9).
[0040]
The bolt 49 has a diameter equal to the inner diameter of the cylindrical mounting portion 44 and larger than the width of the opening 44 a, and is screwed only to the mounting boss 48 and does not tighten the cylindrical mounting portion 44 of the pivot holder 41 to the mounting boss 48.
Therefore, the pivot holder 41 is supported by the cylindrical mounting portions 44 and 44 at both ends of the arm portions 43 and 43 engaged with the bolts 49 and 49 protruding from the pair of mounting bosses 48 and 48 of the vehicle body panel 48. .
[0041]
When an excessive load is applied to the pivot shaft 40 at the base end portion of the wiper arm from the outside of the vehicle, the cylindrical mounting portion 44 of the pivot holder 41 supported by the cylindrical mounting portion 44 engaged with the bolt 49 is a rubber. Due to the elastic deformation of the member 45 and the spring member 46, the spring member 46 is deformed so as to open the opening 44a, disengages from the bolt 49, and the pivot holder 41 falls off to absorb the impact load.
[0042]
A relatively small load for tilting the pivot holder 31 is absorbed by the rubber member 45 interposed between the cylindrical mounting portion 44 of the pivot holder 41 and the bolts 49 to ensure the support of the pivot holder 41, and the vehicle body panel 47. And vibrations associated with the swing of the wiper arm can be absorbed.
[0043]
Next, a fourth embodiment shown in FIGS. 12 and 13 will be described.
A pivot holder 51 that pivotally supports the pivot shaft 50 includes a cylindrical bearing portion 52 and a disk-shaped flange 53 extending from the cylindrical bearing portion 52, and has a low breaking strength around the cylindrical bearing portion 52 of the flange 53. A thin portion 54 is formed.
A plurality of mounting holes are formed in the flange 53.
[0044]
A circular opening 57 a and a circular hole corresponding to the mounting hole of the flange 53 of the pivot holder 52 are formed around the circular opening 57 a at a predetermined position of the vehicle body panel 57.
An attachment member 55 comprising a cylindrical support portion 55a and a flange attachment portion 55b covers the pivot holder 51 from the outside and is attached to the vehicle body panel 57.
[0045]
That is, the pivot holder 51 is inserted into the vehicle body panel 57 from the outside through the circular opening 57a through the cylindrical bearing portion 52, the flange 53 is brought into contact with the peripheral edge of the opening 57a, and the mounting member 55 connects the cylindrical support portion 55a to the cylindrical bearing portion. 52, the flange mounting portion 55b is overlapped with the flange 53, the bolts 58 are passed from the outside through the matching mounting holes of the flange mounting portion 55b, the flange 53, and the vehicle body panel 57, and the nut 59 is screwed together so as to be integrated together. Tighten (see FIG. 12).
[0046]
When the pivot holder 51 is attached in this manner, the attachment member 55 firmly supports an external force perpendicular to the axis of the pivot shaft 50.
Accordingly, if an excessive load is applied to the base end portion of the wiper arm from the outside of the vehicle, the force in the direction perpendicular to the axis is received by the mounting member 55, and the force in the axial direction acts on the cylindrical bearing portion 52 and the base portion of the flange 53. The stress concentrates on the thin portion 54 and the thin portion 54 having a low breaking strength is broken, and the cylindrical bearing portion 52 falls off inward of the vehicle body panel 57 (see FIG. 13).
[0047]
In other words, the impact load is absorbed and damage can be minimized.
Since the broken portion is the flange 53 of the pivot holder 51, it can be easily repaired by replacing the pivot holder, and the wiper arm or the like can be reused.
[0048]
Although the thin-walled portion 54 is provided at the base end portion of the flange 23, a fifth embodiment in which a plurality of arc-shaped elongated holes are partially provided may be used instead of the thin-walled portion. This will be illustrated and described.
[0049]
The pivot holder 61 includes a cylindrical bearing portion 62 that supports the pivot shaft 60 and a flange 63, and an annular groove 64 is formed around the cylindrical bearing portion 62 at the proximal end of the flange 63. A long hole 65 is formed (see FIG. 16).
In addition, three attachment holes 66 are formed in the flange 63.
[0050]
The pivot holder 61 is passed through the vehicle body panel 70 from the outside to the circular opening through the cylindrical bearing portion 62, the flange 63 is brought into contact with the peripheral edge of the circular opening, and the mounting member 68 from the upper side to the cylindrical support portion 68 a to the cylindrical bearing portion 62. The support piece 68c is inserted through the long hole 65, the flange mounting portion 68b is overlapped with the flange 63, and the bolt 71 is passed from the outside through the mounting holes where the flange mounting portion 68b, the flange 63 and the vehicle body panel 70 are matched. The nut 72 is screwed and fastened together (see FIG. 14).
[0051]
With respect to an external force perpendicular to the axis of the pivot shaft 60, the mounting member 68 is firmly supported by the cylindrical support portion 68a and the support piece 68c.
If an excessive load is applied to the base end portion of the wiper arm from the outside of the vehicle, the force in the direction perpendicular to the axis is received by the mounting member 68, and the force in the axial direction acts on the cylindrical bearing portion 62 to the base portion of the flange 63. The stress concentrates and the annular groove 64 having a low breaking strength is broken, so that the cylindrical bearing portion 62 falls off inward of the vehicle body panel 70 (see FIG. 15).
In other words, the impact load is absorbed and damage can be minimized.
[0052]
Next, the sixth embodiment shown in FIGS. 17 to 19 will be described.
A pivot holder 81 that pivotally supports the pivot shaft 80 is composed of only a cylindrical bearing portion, and a mounting member 85 is attached to a disk-like flange in which the mounting member 85 extends from slightly below the center of the cylindrical support portion 85a. The flange mounting portion 85b is provided with a mounting hole.
[0053]
The cylindrical pit holder 81 has a slight flange 81a at the lower end, and a groove 81b is formed from the flange 81a to the length position of the cylindrical support portion 85a of the mounting member 85 in the circumferential direction. When the cylindrical support portion 85a of the mounting member 85 is fitted to the pivot holder 81, the lower end of the cylindrical support portion 85a contacts the flange 81a, and the annular locking plate 83 is fitted to the groove 81b, the pivot holder 81 is attached. The cylindrical support portion 85a of the member 85 is supported by being sandwiched between the annular locking plate 83 and the flange 81a (see FIG. 17).
[0054]
The annular locking plate 83 is a plate member having an annular shape as shown in FIG. 19, and has an opening 83 a partially missing, and can be elastically deformed to expand the opening 83 a.
Several locking claws 83 b protrude from the inner peripheral edge of the annular locking plate 83.
When the opening 83 a of the annular locking plate 83 is expanded and fitted into the groove 81 b of the pivot holder 81, the locking claw 83 b bites into the groove 81 b and is locked, and the pivot holder 81 is attached to the mounting member by the annular locking plate 83. 85.
[0055]
Then, the attachment member 85 has the lower portion of the cylindrical support portion 85a penetrated through the circular opening 90a of the vehicle body panel 90, the flange attachment portion 85b abutted against the peripheral edge of the circular opening 90a, the bolt 91 penetrated, and the nut 92 screwed together. Tighten (see FIG. 17).
[0056]
When an excessive load is applied to the pivot shaft 80 at the base end portion of the wiper arm from the outside of the vehicle, the locking claw 83b on the inner peripheral edge of the annular locking portion plate 83 that supports the pivot holder 85 is bent and deformed. The pivot holder 85 is unsupported and moved inward of the vehicle body along the cylindrical support portion 85a to absorb the impact load, and damage can be minimized.
[Brief description of the drawings]
FIG. 1 is an external view of a front windshield portion of an automobile to which a wiper device according to an embodiment of the present invention is applied.
FIG. 2 is a partial cross-sectional side view showing a mounting structure of a pivot holder of a wiper device.
FIG. 3 is a side view, partly in cross section, showing a state where the pivot holder has fallen off.
FIG. 4 is an exploded perspective view showing a mounting structure of the pivot holder.
FIG. 5 is a partial cross-sectional side view showing a pivot holder mounting structure according to a second embodiment.
FIG. 6 is a side view, partly in cross section, showing a state where the pivot holder has fallen off.
FIG. 7 is a perspective view of an annular locking plate.
FIG. 8 is a plan view of a vehicle body panel.
FIG. 9 is a partially omitted perspective view showing a pivot holder mounting structure according to a third embodiment.
FIG. 10 is a partially omitted perspective view showing a state in which the pivot holder is dropped.
FIG. 11 is an enlarged side view of a cylindrical mounting portion.
FIG. 12 is a partial cross-sectional side view showing a pivot holder mounting structure according to a fourth embodiment.
FIG. 13 is a side view, partly in cross section, showing a state where the pivot holder has fallen off.
FIG. 14 is a side view with a partial cross section showing a pivot holder mounting structure according to a fifth embodiment;
FIG. 15 is a side view, partly in section, showing a state in which the pivot holder has fallen off.
FIG. 16 is a plan view of the pivot holder.
FIG. 17 is a side view with a partial cross section showing a pivot holder mounting structure according to a sixth embodiment;
FIG. 18 is a side view, partly in section, showing a state in which the pivot holder has fallen off.
FIG. 19 is a perspective view of an annular locking plate.
[Explanation of symbols]
1 ... car, 2 ... front windshield, 3 ... body panel,
10 ... wiper device, 11 ... wiper blade, 12 ... wiper arm,
DESCRIPTION OF SYMBOLS 20 ... Pivot shaft, 21 ... Pivot holder, 22 ... Cylindrical bearing part, 23 ... Flange, 24 ... Annular locking plate, 25 ... Nut, 27 ... Link,
DESCRIPTION OF SYMBOLS 30 ... Pivot shaft, 31 ... Pivot holder, 32 ... Cylindrical bearing part, 33 ... Flange, 34 ... Annular locking plate, 35 ... Annular rubber member, 36 ... Bolt, 37 ... Body panel, 38 ... Circular opening,
DESCRIPTION OF SYMBOLS 40 ... Pivot shaft, 41 ... Pivot holder, 42 ... Cylindrical bearing part, 43 ... Arm part, 44 ... Cylindrical mounting part, 45 ... Rubber member, 46 ... Spring member, 47 ... Body panel, 48 ... Mounting boss, 49 ... Bolt ,
DESCRIPTION OF SYMBOLS 50 ... Pivot shaft, 51 ... Pivot holder, 52 ... Cylindrical bearing part, 53 ... Flange, 54 ... Thin part, 55 ... Mounting member, 57 ... Body panel, 58 ... Bolt, 59 ... Nut,
DESCRIPTION OF SYMBOLS 60 ... Pivot shaft, 61 ... Pivot holder, 62 ... Cylindrical bearing part, 63 ... Flange, 64 ... Annular groove, 65 ... Long hole, 66 ... Mounting hole, 68 ... Mounting member, 70 ... Body panel, 71 ... Bolt, 72 …nut,
DESCRIPTION OF SYMBOLS 80 ... Pivot shaft, 81 ... Pivot holder, 83 ... Annular locking plate, 85 ... Mounting member, 90 ... Body panel, 91 ... Bolt, 92 ... Nut.

Claims

In the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm swings away the windshield by swinging the wiper arm.
The pivot holder that rotatably supports the pivot shaft to which the base end portion of the wiper arm is fixed is composed of a cylindrical bearing portion and a flange portion formed with a male screw on the outer periphery,
The cylindrical bearing portion of the pivot holder passes through the opening of the vehicle body panel. Screwed into the
The nut has an outer diameter smaller than the inner diameter of the opening of the vehicle body panel, and tightens the inner peripheral edge portion of the annular locking plate to support the pivot holder via the annular locking plate ,
When an excessive load is applied to the pivot shaft, the inner peripheral edge portion of the annular locking plate tightened by the nut is deformed, the support is released, and the pivot holder can be moved inward of the vehicle body. A vehicle wiper device.

In the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm swings away the windshield.
A pivot holder that rotatably supports a pivot shaft to which a base end portion of the wiper arm is fixed is composed of a cylindrical bearing portion and a flange portion,
The flange portion of the pivot holder is abutted on the inner surface with respect to the peripheral portion of the opening of the vehicle body panel, the bolt is screwed onto the flange portion with the annular locking plate sandwiched on the outer surface,
The head portion of the bolt has an outer diameter smaller than the inner diameter of the opening of the vehicle body panel, tightens the inner peripheral edge portion of the annular locking plate, and supports the pivot holder via the annular locking plate ,
When an excessive load is applied to the pivot shaft, the inner peripheral edge portion of the annular locking plate tightened by the bolt is deformed, the support is released, and the pivot holder can be moved inward of the vehicle body. A vehicle wiper device.

3. The vehicle wiper device according to claim 1, wherein an elastic member is interposed between a peripheral portion of the opening of the vehicle body panel and a flange portion of the pivot holder.

In the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm swings away the windshield by swinging the wiper arm.
A pivot holder that rotatably supports a pivot shaft to which a base end portion of the wiper arm is fixed includes a cylindrical bearing portion and at least two arm portions extending from the cylindrical bearing portion, and the pivot holder The arm portion has a cylindrical mounting portion having a central axis oriented in a direction perpendicular to the pivot shaft,
An opening having a width smaller than the inner diameter is formed in a part of the cylindrical mounting portion,
A cylindrical mounting portion of the arm portion of the pivot holder is in contact with a mounting boss portion protruding from the inner surface of the vehicle body panel from the side, and a bolt is passed through to be screwed to the mounting boss portion. To support the pivot holder ,
When an excessive load is applied to the pivot shaft, the tubular mounting portion is deformed so as to open an opening, and the pivot holder can be detached by detaching from the bolt .

In the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm swings away the windshield.
A pivot holder that rotatably supports a pivot shaft to which a base end portion of the wiper arm is fixed is composed of a cylindrical bearing portion and a flange portion,
Form a thin thin portion with low breaking strength around the cylindrical bearing portion of the flange portion,
An attachment member that covers the pivot holder from the outside and is attached to the peripheral edge of the opening of the vehicle body panel includes a cylindrical support portion and a flange attachment portion, and the cylindrical support portion supports the cylindrical bearing portion of the pivot holder in the axial direction. Cover it movably, and fix it together to the vehicle body panel by sandwiching the flange part of the pivot holder between the outer peripheral surface of the opening of the vehicle body panel at the flange mounting part ,
When an excessive load is applied to the pivot shaft, a thin portion with a small breaking strength around the cylindrical bearing portion is broken, and the pivot holder can be removed.

A through hole is formed around the cylindrical bearing portion of the flange portion of the pivot holder,
6. The cylindrical support portion of the support member partially extends along the cylindrical bearing portion of the pivot holder, penetrates the through hole, and extends inward from the opening of the vehicle body panel. The vehicle wiper device as described.

In the vehicle wiper device in which the wiper blade attached to the tip of the wiper arm swings away the windshield.
A pivot holder that pivotally supports a pivot shaft to which a base end portion of the wiper arm is fixed is composed of a cylindrical bearing portion,
An attachment member that covers the pivot holder from the outside and is attached to the peripheral edge of the opening of the vehicle body panel includes a cylindrical support portion and a flange attachment portion, and the cylindrical support portion supports the cylindrical bearing portion of the pivot holder in the axial direction. Cover it movably, fix its flange mounting part to the periphery of the opening of the body panel,
An annular locking member is locked between the cylindrical bearing portion of the pivot holder and the cylindrical support portion of the mounting member to support the pivot holder,
The vehicle wiper device according to claim 1, wherein the annular locking member is deformed or dropped with respect to an axial input from above, and the pivot holder can be moved downward.