JP2004166377A

JP2004166377A - Connection structure for terminal members and wiper motor

Info

Publication number: JP2004166377A
Application number: JP2002328606A
Authority: JP
Inventors: Yoshiaki Hayase; 嘉昭早瀬
Original assignee: Asmo Co Ltd
Current assignee: Asmo Co Ltd
Priority date: 2002-11-12
Filing date: 2002-11-12
Publication date: 2004-06-10

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure for terminal members which is excellent in assembling workability and can inexpensively assemble terminal members. <P>SOLUTION: The connection structure for terminal members is such that first-third contact members 28-30 are electrically connected and fixed to first-third fixed terminal members 23-25 in a prescribed posture. Erected erecting parts 23a-25a are provided to the first-third fixed terminal members 23-25. Pressing pieces 28e-30e cut and raised obliquely in the insertion direction of the erecting parts 23a-25a from connecting holes 28d-30d and the inner peripheral face of the connecting holes 28d-30d are provided to the first-third contact members 28-30. A prescribed posture is maintained by pressing the rising parts 23a-25a to the pressing pieces 28e-30e in a state that the rising parts 23a-25a are inserted to the connecting holes 28d-30d. The erecting parts 23a-25a are split and caulked in that state, and accordingly, the terminal member are connected and fixed. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、ターミナル部材を接続するターミナル部材の接続構造に関し、特に自動定位置停止機構を備えたワイパ用モータ等に好適なものである。
【０００２】
【従来の技術】
従来、車両用ワイパ装置に用いられるワイパ用モータ等においては、特にワイパアームを車両ウインドウの所定の停止位置に自動で停止させるべく自動定位置停止機構を備えたものがある。そして、自動定位置停止機構としては、回転駆動される出力軸の回転に連動して回転する所定の導電パターンを有する可動接点と、ギヤケース等に対して固定され出力軸の回転に応じて可動接点と接触／非接触されるコンタクト部材（ターミナル部材）とを備えたものがある。このような自動定位置停止機構では、コンタクト部材の可動接点との接触／非接触に基づいてワイパアームが所定の停止位置に自動で停止される。
【０００３】
ところで、上記のようなコンタクト部材は、ギヤケース等に固定され制御装置（電源等）に接続される他の固定ターミナル部材に所定の姿勢で電気的に接続固定される。そして、このような接続構造としては、固定ターミナル部材の一端に起立された起立部を形成し該起立部をギヤケース内部側に突出するように配置し、コンタクト部材の基部に円形の接続孔を形成し該接続孔に前記起立部を挿入して該起立部を割りカシメすることで接続固定するものがある（例えば、特許文献１参照）。尚、このようなコンタクト部材は、前記基部から略くの字状に折曲形成されて弾性を有するように延びるアーム部と、該アーム部の先端に設けられ可動接点と接触／非接触される接点部とを有する。そして、接点部がアーム部の弾性により可動接点に押圧接触される。又、コンタクト部材は、可動接点に良好に追従して押圧接触するように（接触を維持するように）、通常、固定ターミナル部材より高い所定のバネ性を有する材料よりなる。
【０００４】
【特許文献１】
英国特許第１５８５３００号明細書
【０００５】
【発明が解決しようとする課題】
しかしながら、上記のような接続構造では、前記起立部が前記接続孔に挿入されただけの状態（割りカシメ等により接続固定される前の状態）でターミナル部材に対してコンタクト部材が所定の姿勢で維持されない。よって、例えば、起立部が接続孔に挿入されただけの状態で、製造ライン上の次のステーションに搬送させ該ステーションにて割りカシメを行う場合など、搬送中にコンタクト部材の接点部側が倒れて（下がって）しまい、コンタクト部材の基部側が浮き上がってしまう虞がある。又、カシメ等による接続固定時においても、何らかの方法で姿勢を保持する必要がある。よって、上記のような接続構造では、例えば手や特別な装置を用いて前記所定の姿勢を保持したり適宜所定の姿勢に正す必要がある。そのため、組付け作業性が悪く、組付けコストが高くなるという問題がある。
【０００６】
本発明の目的は、簡単な構成により極めて組付け作業性が優れ、低コストで組み付けることができるターミナル部材の接続構造及びワイパ用モータを提供することにある。
【０００７】
【課題を解決するための手段】
請求項１に記載の発明は、導電性の金属板にて形成された第１ターミナル部材に対し導電性の金属板にて形成された第２ターミナル部材を所定の姿勢で電気的に接続固定するターミナル部材の接続構造であって、前記第１及び第２ターミナル部材の一方には、起立された起立部が設けられ、前記第１及び第２ターミナル部材の他方には、前記起立部が挿入される接続孔と、該接続孔の内周面から前記起立部の挿入方向の斜め方向に切り起こされた押圧片とが設けられ、前記起立部が前記接続孔に挿入されて前記所定の姿勢とされた状態で該起立部が前記押圧片に押圧され、その状態で溶接又はカシメにより前記第１及び第２ターミナル部材が接続固定された。
【０００８】
請求項２に記載の発明は、請求項１に記載のターミナル部材の接続構造において、前記第１及び第２ターミナル部材の他方は、前記接続孔が形成される基部と、該基部から略くの字状に折曲形成されて延びるアーム部と、該アーム部の先端に設けられた接点部とを有するコンタクト部材である。
【０００９】
請求項３に記載の発明は、請求項２に記載のターミナル部材の接続構造において、前記押圧片は、前記アーム部と略同方向に延出した。
請求項４に記載の発明は、請求項１乃至３のいずれか１項に記載のターミナル部材の接続構造において、前記起立部が割りカシメされて前記第１及び第２ターミナル部材が接続固定された。
【００１０】
請求項５に記載の発明は、請求項４に記載のターミナル部材の接続構造において、前記第１及び第２ターミナル部材は、さらに溶接されて接続固定された。
請求項６に記載の発明は、請求項１乃至５のいずれか１項に記載のターミナル部材の接続構造と、回転駆動される出力軸と、前記出力軸の回転に連動して回転する所定の導電パターンを有する可動接点とを備え、前記第１及び第２ターミナル部材は、いずれかが前記出力軸の回転時に前記可動接点と接触／非接触されることでワイパアームを車両ウインドウの所定の停止位置で停止させるためのものである。
【００１１】
請求項７に記載の発明は、請求項２に記載のターミナル部材の接続構造において、前記コンタクト部材は、前記第１及び第２ターミナル部材の一方よりも高いバネ性を有する板状金属バネ材にて構成される。
【００１２】
（作用）
請求項１に記載の発明によれば、第１及び第２ターミナル部材の一方には、起立された起立部が設けられ、第１及び第２ターミナル部材の他方には、前記起立部が挿入される接続孔と該接続孔の内周面から前記起立部の挿入方向の斜め方向に切り起こされた押圧片とが設けられる。そして、前記起立部が前記接続孔に挿入されて前記所定の姿勢とされた状態で該起立部が押圧片に押圧されるため、第１及び第２ターミナル部材を所定の姿勢で維持させることができる。そして、その状態で溶接又はカシメにより前記第１及び第２ターミナル部材が接続固定されるため、溶接又はカシメによる接続固定時に、例えば手や特別な装置を用いて姿勢を保持する必要が無い。その結果、簡単な構成により極めて組付け作業性が優れ、低コストで組み付けることができる。
【００１３】
請求項２に記載の発明によれば、第１及び第２ターミナル部材の他方が、前記接続孔が形成される基部と、該基部から略くの字状に折曲形成されて延びるアーム部と、該アーム部の先端に設けられた接点部とを有するコンタクト部材であるため、接続孔に押圧片が形成されていない場合には、接点部側が倒れ易い。しかし、接続孔には押圧片が設けられ、第１及び第２ターミナル部材が所定の姿勢で維持されて接点部側が倒れることが防止されるため、接続孔に押圧片が形成されていない場合に比べて大幅に組付け作業性が向上される。
【００１４】
請求項３に記載の発明によれば、押圧片は、前記アーム部と略同方向に延出されるため、押圧片が接点部側の倒れる力を受け易く、接点部側が倒れることを防止する機能が向上される。
【００１５】
請求項４に記載の発明によれば、起立部が接続孔に挿入されて前記所定の姿勢とされた状態で起立部が割りカシメされて第１及び第２ターミナル部材が接続固定されるため、容易に第１及び第２ターミナル部材を接続固定することができる。
【００１６】
請求項５に記載の発明によれば、第１及び第２ターミナル部材は、さらに溶接されて接続固定されるため、より信頼性の高い電気的接続を得ることができる。請求項６に記載の発明によれば、可動接点と接触／非接触されることでワイパアームを車両ウインドウの所定の停止位置で停止させるための第１及び第２ターミナル部材を備えたワイパ用モータにおいて、請求項１乃至５のいずれかに記載の発明の効果と同様の効果を得ることができる。
【００１７】
請求項７に記載の発明によれば、コンタクト部材は、前記第１及び第２ターミナル部材の一方よりも高いバネ性を有する板状金属バネ材にて構成されるため、接点部を、例えば可動接点等に良好に追従するように押圧接触させることができる。
【００１８】
【発明の実施の形態】
以下、本発明を車両用ワイパ装置のワイパ用モータに具体化した一実施形態を図１〜図７に従って説明する。
【００１９】
図１に示すように、モータ１は、モータ本体２と減速部３とを備えている。モータ本体２は、略有底円筒形状のヨークハウジング４と、該ヨークハウジング４の内周面に固定される複数のマグネット５と、同ヨークハウジング４内に収容されるロータ（回転子）６とを備えている。ロータ６は回転軸７を有し、ヨークハウジング４の開口部から突出する回転軸７の先端側には、ウォーム８が形成されている。
【００２０】
減速部３は、ハウジング１１と、ハウジングカバー１２と、ウォームホイール１３と、ユニットプレート１４（図３参照）と、回転体１５（図２参照）とを備えている。前記ウォーム８、ウォームホイール１３、ユニットプレート１４及び回転体１５は、ハウジング１１とハウジングカバー１２との内部に収容保持される。このとき、ウォーム８とウォームホイール１３とは回転可能に支持されるとともに噛合され、ウォームホイール１３と一体回転可能に固定された図示しない出力軸は、ハウジング１１に形成された図示しない貫通孔を貫通して外部に突出される。そして、ウォームホイールの出力軸は図示しないリンク機構等を介してワイパアーム（ワイパブレード）に連結されることになる。
【００２１】
ハウジングカバー１２は、図２に示すように、樹脂材料よりなり、略板形状で、ハウジング１１の開口部を閉塞可能な形状に形成されている。ハウジングカバー１２には、前記ユニットプレート１４を収容するためのユニット収容凹部１２ａが形成されている。又、ハウジングカバー１２において、モータ本体２が固定される側の反対側（図２中、左側）には、傾斜したコネクタハウジング部１２ｂが筒状に延出形成されている。
【００２２】
ユニットプレート１４は、電気絶縁材料（樹脂材）よりなり、図３及び図４に示すように、前記ユニット収容凹部１２ａと対応した略直方体形状に形成され、後述する種々の電気回路部品が固定される。このユニットプレート１４の略中央には、図３に示すように、前記回転体１５（図２参照）を回転可能に支持するための回転支持部１４ａが形成されている。又、ユニットプレート１４の回転支持部１４ａ近傍には、回転支持部１４ａの軸方向に貫通する貫通孔１４ｂ（図４〜図６参照）が形成されている。尚、本実施の形態では、貫通孔１４ｂが３つ並設されている。
【００２３】
本実施の形態における前記電気回路部品は、図３及び図４に示すように、第１及び第２電源側ターミナル２１，２２、第１ターミナル部材としての第１〜第３固定ターミナル部材２３〜２５、第１及び第２コンデンサ２６，２７、第２ターミナル部材としての第１〜第３コンタクト部材２８〜３０を含む。そして、第１〜第３コンタクト部材２８〜３０を除く前記電気回路部品２１〜２７は、前記ユニットプレート１４のハウジングカバー１２と対向される面側（図４参照）に配置される。
【００２４】
詳しくは、第１及び第２電源側ターミナル２１，２２は、その一端２１ａ，２２ａがモータ本体２に設けられる図示しない給電用ブラシに対して接続され他端２１ｂ，２２ｂがコネクタハウジング部１２ｂに嵌着される外部コネクタの端子に接続されるべくユニットプレート１４の長手方向に沿って配設されている。
【００２５】
第１〜第３固定ターミナル部材２３〜２５は、導電性の金属板にて形成されている。この第１〜第３固定ターミナル部材２３〜２５には、起立された起立部２３ａ〜２５ａ（図５及び図６参照）が形成されている。尚、図５及び図６では、第２固定ターミナル部材２４について図示し、第１及び第３固定ターミナル部材２３，２５については第２固定ターミナル部材２４と略同様であるため図を省略する。本実施の形態の起立部２３ａ〜２５ａは、第１〜第３固定ターミナル部材２３〜２５の一端が折曲されることで形成されている。そして、第１〜第３固定ターミナル部材２３〜２５は、起立部２３ａ〜２５ａが前記貫通孔１４ｂを貫通してハウジングカバー１２の非対向側に突出するように配置され、他端２３ｂ〜２５ｂがコネクタハウジング部１２ｂに嵌着される外部コネクタの端子に接続されるようにユニットプレート１４に配設されている。尚、図３、図５及び図６では、起立部２３ａ〜２５ａ（その先端）に割りカシメが施された状態を図示しており、図７に割りカシメが施される前の状態の起立部２３ａ〜２５ａを図示する。又、本実施の形態では、説明の便宜上、割りカシメが施される前の状態の起立部２３ａ〜２５ａについても同様の符号を付して説明する。
【００２６】
第１及び第２コンデンサ２６，２７は、給電用ブラシ側で発生されるノイズを除去（減衰）するためのものであり、その端子が前記第１及び第２電源側ターミナル２１，２２及び第１固定ターミナル部材２３に接続されるように配設されている。
【００２７】
前記第１〜第３コンタクト部材２８〜３０は、導電性の金属板にて形成されている。この第１〜第３コンタクト部材２８〜３０は、図３及び図５に示すように、基部２８ａ〜３０ａと、基部２８ａ〜３０ａから略くの字状に（傾斜するように）折曲形成されて延びるアーム部２８ｂ〜３０ｂと、該アーム部２８ｂ〜３０ｂの先端に設けられた接点部２８ｃ〜３０ｃとを有する。尚、図５では、第２コンタクト部材２９について図示し、第１及び第３コンタクト部材２８，３０については第２コンタクト部材２９と略同様であるためこの同様の断面図を省略する。基部２８ａ〜３０ａには、割りカシメが施される前の状態の前記起立部２３ａ〜２５ａ（図７参照）が挿入可能な接続孔２８ｄ〜３０ｄと、該接続孔２８ｄ〜３０ｄの内周面から前記起立部２３ａ〜２５ａの挿入方向の斜め方向に切り起こされた押圧片２８ｅ〜３０ｅ（図３及び図５参照）とが形成されている。本実施の形態では、接続孔２８ｄ〜３０ｄは略円形に形成され、その内周面の一部から押圧片２８ｅ〜３０ｅが延出している。そして、押圧片２８ｅ〜３０ｅが延出する方向は、アーム部２８ｂ〜３０ｂと略同方向に設定されている。即ち、押圧片２８ｅ〜３０ｅは、接続孔２８ｄ〜３０ｄの内周面におけるアーム部２８ｂ〜３０ｂが形成されない側からアーム部２８ｂ〜３０ｂが延びる方向と略平行方向（図５中、右上方向）に延出している。
【００２８】
そして、第１〜第３コンタクト部材２８〜３０は、接続孔２８ｄ〜３０ｄに割りカシメ前の状態の起立部２３ａ〜２５ａ（図７参照）が挿入されて所定の姿勢とされた状態で該起立部２３ａ〜２５ａが押圧片２８ｅ〜３０ｅに押圧されることで第１〜第３固定ターミナル部材２３〜２５に対して保持（仮保持）される。そして、その状態で起立部２３ａ〜２５ａが割りカシメされる（図６に示すように、Ｖ字溝が形成される）ことにより第１〜第３コンタクト部材２８〜３０と第１〜第３固定ターミナル部材２３〜２５とが所定の姿勢で接続固定されている。
【００２９】
尚、本実施の形態の接点部２８ｃ〜３０ｃのうち接点部２９ｃは、ユニットプレート１４の平面から突出する方向に半球状に張り出されて形成されている。又、接点部２８ｃ〜３０ｃのうち接点部２８ｃ，３０ｃは、接点の検出精度を接点部２９ｃよりも向上させるためにアーム部２８ｂ，３０ｂの先端に比較的細い導電性ピンが固定されてなる。この第１〜第３コンタクト部材２８〜３０は、互いに平行に配設されるとともに、その接点部２８ｃ〜３０ｃが前記回転支持部１４ａから径方向に延びる一直線上に並ぶように配設される。
【００３０】
上記のように構成されたユニットプレート１４は、図２に示すように、ハウジングカバー１２のユニット収容凹部１２ａに収容保持される。尚、このとき前記第１及び第２電源側ターミナル２１，２２及び第１〜第３固定ターミナル部材２３〜２５のコネクタピン部２１ｂ〜２５ｂが前記コネクタハウジング部１２ｂ内に導出される。
【００３１】
前記ユニットプレート１４の回転支持部１４ａには、回転体１５が回転可能に支持される。この回転体１５の下面（図２中、ハウジングカバー１２側の面）には、所定の導電パターンを有する可動接点３１（図２中、破線で示す）が固定されている。そして、回転体１５の下面（可動接点３１）には、前記第１〜第３コンタクト部材２８〜３０の接点部２８ｃ〜３０ｃがアーム部２８ｂ〜３０ｂの弾性により押圧接触される。尚、第１〜第３コンタクト部材２８〜３０は、可動接点３１に良好に追従して押圧接触するように（接触を維持するように）、第１〜第３固定ターミナル部材２３〜２５より高い所定のバネ性を有する材料よりなる。本実施の形態では、第１〜第３コンタクト部材２８〜３０は、リン青銅の金属板材（板状金属バネ材）よりなる。又、第１〜第３固定ターミナル部材２３〜２５は、すずメッキされた黄銅の金属板材よりなる。
【００３２】
上記のようにユニットプレート１４及び回転体１５が固定されたハウジングカバー１２は、ハウジング１１の開口部を閉塞するように該ハウジング１１に固定される。尚、このとき、前記回転体１５は、その上面（前記ウォームホイール１３と対向する側の面）に設けられた連結凸部１５ａとウォームホイール１３に設けられた図示しない連結凸部が係合することにより、ウォームホイール１３（出力軸）と一体回転可能に連結される。
【００３３】
上記のように構成された車両用ワイパ装置（モータ１）では、出力軸（ウォームホイール１３）と共に一体回転する可動接点３１と第１〜第３コンタクト部材２８〜３０（接点部２８ｃ〜３０ｃ）とが接触／非接触されることで、出力軸（ウォームホイール１３）の回転角度が検出されることになる。よって、車両運転席に設けられたワイパスイッチのオフ操作タイミングに関わらず（自動で）ワイパアームを車両ウインドウの所定の停止位置で停止させることができる。
【００３４】
次に、上記実施の形態の特徴的な作用効果を以下に記載する。
（１）第１〜第３コンタクト部材２８〜３０には、第１〜第３固定ターミナル部材２３〜２５の起立部２３ａ〜２５ａ（図７参照）が挿入可能な接続孔２８ｄ〜３０ｄと、その内周面から起立部２３ａ〜２５ａの挿入方向の斜め方向に切り起こされた押圧片２８ｅ〜３０ｅ（図３及び図５参照）とが形成されている。そして、起立部２３ａ〜２５ａが接続孔２８ｄ〜３０ｄに挿入されて所定の姿勢とされた状態で該起立部２３ａ〜２５ａが押圧片２８ｅ〜３０ｅに押圧されるため、第１〜第３固定ターミナル部材２３〜２５と第１〜第３コンタクト部材２８〜３０とが所定の姿勢で維持（仮保持）される。そして、その状態で割りカシメが施されて第１〜第３固定ターミナル部材２３〜２５と第１〜第３コンタクト部材２８〜３０とが所定の姿勢で接続固定されるため、接続固定時に、例えば手や特別な装置を用いて姿勢を保持する必要が無い。その結果、組付け作業性に優れ、低コストで組み付けることができる。
【００３５】
（２）第１〜第３コンタクト部材２８〜３０は、接続孔２８ｄ〜３０ｄが形成される基部２８ａ〜３０ａと、該基部２８ａ〜３０ａから略くの字状に折曲形成されて延びるアーム部２８ｂ〜３０ｂと、該アーム部２８ｂ〜３０ｂの先端に設けられた接点部２８ｃ〜３０ｃとを有する。よって、接点部２８ｃ〜３０ｃ側が倒れ易い構成であるが、接続孔２８ｄ〜３０ｄに押圧片２８ｅ〜３０ｅが形成されているため、第１〜第３固定ターミナル部材２３〜２５と第１〜第３コンタクト部材２８〜３０とが所定の姿勢で維持（仮保持）される。これにより、起立部２３ａ〜２５ａが接続孔２８ｄ〜３０ｄに挿入されただけの状態（図７参照）で、例えば搬送中等に接点部２８ｃ〜３０ｃ側が倒れて（下がって）しまうことが防止され、基部２８ａ〜３０ａ側が浮き上がってしまうことが防止される。又、接続固定時に、例えば手や特別な装置を用いて姿勢を保持する必要が無い。その結果、接続孔に押圧片が形成されていない場合に比べて大幅に組付け作業性が向上される。
【００３６】
（３）押圧片２８ｅ〜３０ｅが延出する方向は、アーム部２８ｂ〜３０ｂと略同方向（略平行方向）に設定されている。よって、押圧片２８ｅ〜３０ｅが接点部２８ｃ〜３０ｃ側の倒れる力を受け易く、接点部２８ｃ〜３０ｃ側が倒れることを防止する機能が向上される（更に倒れ難くなる）。
【００３７】
（４）第１〜第３固定ターミナル部材２３〜２５と第１〜第３コンタクト部材２８〜３０とを、起立部２３ａ〜２５ａを割りカシメすることで接続固定するため、容易に接続固定することができる。
【００３８】
上記実施の形態は、以下のように変更してもよい。
・上記実施の形態では、ワイパ用のモータ１におけるターミナル部材（第１〜第３固定ターミナル部材２３〜２５と第１〜第３コンタクト部材２８〜３０）の接続構造として具体化したが、他の装置に用いられるターミナル部材の接続構造として具体化してもよい。
【００３９】
・上記実施の形態では、起立部２３ａ〜２５ａが貫通孔１４ｂを貫通して設けられることで第１〜第３固定ターミナル部材２３〜２５と第１〜第３コンタクト部材２８〜３０とがユニットプレート１４を介して配設されるものとしたが、介在物を介さず配設されるターミナル部材の接続構造に具体化してもよい。
【００４０】
例えば、図８（ａ）（ｂ）に示すように変更してもよい。図８に示すように、第１ターミナル部材４１の一端には、折曲されることで起立された起立部４１ａが形成されている。又、第２ターミナル部材４２の基部４２ａには、割りカシメが施される前の状態の前記起立部４１ａが挿入可能な接続孔４２ｂと、該接続孔４２ｂの内周面から前記起立部４１ａの挿入方向の斜め方向に切り起こされた押圧片４２ｃとが形成されている。そして、起立部４１ａが接続孔４２ｂに挿入されて所定の姿勢とされた状態で該起立部４１ａが押圧片４２ｃに押圧され、割りカシメされることにより第１及び第２ターミナル部材４１，４２が接続固定されている。尚、この第２ターミナル部材４２には、基部４２ａからクランク状に延びて前記第１ターミナル部材４１と一直線上に延びる延設部４２ｄが形成されている。このような介在物を介さず配設されるターミナル部材の接続構造においても、上記実施の形態の効果（１）、（４）と同様の効果を得ることができる。
【００４１】
又、例えば、図９（ａ）（ｂ）に示すように変更してもよい。尚、この例は、上記別例（図８参照）の一部を変更した構成であるため、その変更点についてのみ説明する。図９に示すように、第２ターミナル部材４２の基部４２ａには、第１ターミナル部材４１と当接可能に延びる溶接部４２ｅが形成されている。そして、第１及び第２ターミナル部材４１，４２は、前記割りカシメに加え、さらに溶接部４２ｅが溶接されて接続固定されている。尚、図９では、溶接された箇所を２点鎖線で図示している。このようにすると、より信頼性の高い電気的接続を得ることができる。
【００４２】
又、例えば、図１０（ａ）（ｂ）に示すように変更してもよい。図１０に示すように、第１ターミナル部材５１の中間部には、垂直に切り起こされることで起立された起立部５１ａが形成されている。又、第２ターミナル部材５２の基部５２ａには、割りカシメが施される前の状態の前記起立部５１ａが挿入可能な接続孔５２ｂと、該接続孔５２ｂの内周面から前記起立部５１ａの挿入方向の斜め方向に切り起こされた押圧片５２ｃとが形成されている。そして、起立部５１ａが接続孔５２ｂに挿入されて所定の姿勢とされた状態で起立部５１ａが押圧片５２ｃに押圧され、割りカシメされ、さらに第２ターミナル部材５２の中間部である溶接部５２ｄが第１ターミナル部材５１の先端部と溶接されるにより第１及び第２ターミナル部材５１，５２が接続固定されている。尚、図１０では、溶接された箇所を２点鎖線で図示している。このようにしても、上記実施の形態の効果（１）と同様の効果を得ることができるとともに、より信頼性の高い電気的接続を得ることができる。
【００４３】
・上記実施の形態では、押圧片２８ｅ〜３０ｅが延出する方向は、アーム部２８ｂ〜３０ｂと略同方向（略平行方向）に設定されるとしたが、起立部２３ａ〜２５ａが接続孔２８ｄ〜３０ｄに挿入されて所定の姿勢とされた状態で押圧して維持（仮保持）できれば他の方向に変更してもよい。例えば、接続孔２８ｄ〜３０ｄの内周面におけるアーム部２８ｂ〜３０ｂが形成される側からアーム部２８ｂ〜３０ｂが延びる方向と反対方向（起立部２３ａ〜２５ａを中心として略対称方向）に延出する押圧片としてもよい。このようにしても、上記実施の形態の効果（１）、（２）、（４）と同様の効果を得ることができる。
【００４４】
・上記実施の形態では、起立部２３ａ〜２５ａを割りカシメすることで第１〜第３固定ターミナル部材２３〜２５と第１〜第３コンタクト部材２８〜３０とを接続固定したが、押圧片２８ｅ〜３０ｅにより所定の姿勢を維持（仮保持）した状態で接続固定すれば、他のカシメや溶接等、他の方法で接続固定してもよい。このようにしても、上記実施の形態の効果（１）〜（３）と同様の効果を得ることができる。
【００４５】
・上記実施の形態では、第１〜第３固定ターミナル部材２３〜２５に起立部２３ａ〜２５ａを形成し、第１〜第３コンタクト部材２８〜３０に接続孔２８ｄ〜３０ｄ及び押圧片２８ｅ〜３０ｅを形成したが、第１〜第３コンタクト部材に起立部を、第１〜第３ターミナル部材に接続孔及び押圧片を形成してもよい。このようにしても、組付け作業性に優れ、低コストで組み付けることができる。
【００４６】
【発明の効果】
以上詳述したように、請求項１〜５、７に記載の発明によれば、簡単な構成により極めて組付け作業性が優れ、低コストで組み付けることができるターミナル部材の接続構造を提供することができる。
【００４７】
又、請求項６に記載の発明によれば、簡単な構成により極めて組付け作業性が優れ、低コストで組み付けることができるワイパ用モータを提供することができる。
【図面の簡単な説明】
【図１】本実施の形態のモータを示す外観図。
【図２】本実施の形態のハウジングカバー側部材を説明するための説明図。
【図３】本実施の形態のユニットプレートを説明するための説明図。
【図４】本実施の形態のユニットプレートを説明するための説明図。
【図５】図３のＡ−Ａ断面図。
【図６】図３のＢ−Ｂ断面図。
【図７】割りカシメ前の状態の起立部を説明するための説明図。
【図８】（ａ）別例の接続構造を示す平面図。（ｂ）同じく接続構造を示す断面図。
【図９】（ａ）別例の接続構造を示す平面図。（ｂ）同じく接続構造を示す断面図。
【図１０】（ａ）別例の接続構造を示す平面図。（ｂ）同じく接続構造を示す断面図。
【符号の説明】
２３〜２５…第１〜第３固定ターミナル部材（第１ターミナル部材）、２３ａ〜２５ａ，４１ａ，５１ａ…起立部、２８〜３０…第１〜第３コンタクト部材（第２ターミナル部材）、２８ａ〜３０ａ…基部、２８ｂ〜３０ｂ…アーム部、２８ｃ〜３０ｃ…接点部、２８ｄ〜３０ｄ，４２ｂ，５２ｂ…接続孔、２８ｅ〜３０ｅ，４２ｃ，５２ｃ…押圧片、３１…可動接点、４１，５１…第１ターミナル部材、４２，５２…第２ターミナル部材。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a terminal member connection structure for connecting terminal members, and is particularly suitable for a wiper motor or the like having an automatic fixed position stop mechanism.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, some wiper motors and the like used in a vehicle wiper device include an automatic fixed position stop mechanism for automatically stopping a wiper arm at a predetermined stop position of a vehicle window. The automatic fixed-position stopping mechanism includes a movable contact having a predetermined conductive pattern that rotates in conjunction with the rotation of the output shaft that is driven to rotate, and a movable contact that is fixed to a gear case or the like and rotates in accordance with the rotation of the output shaft. And a contact member (terminal member) contacted / non-contacted. In such an automatic fixed position stop mechanism, the wiper arm is automatically stopped at a predetermined stop position based on contact / non-contact of the contact member with the movable contact.
[0003]
By the way, the contact member as described above is fixed to a gear case or the like and is electrically connected and fixed in a predetermined posture to another fixed terminal member connected to a control device (such as a power supply). As such a connection structure, an upright portion is formed at one end of the fixed terminal member, and the upright portion is arranged so as to protrude inside the gear case, and a circular connection hole is formed at the base of the contact member. In some cases, the upright portion is inserted into the connection hole, and the upright portion is split and caulked to fix the connection (for example, see Patent Document 1). In addition, such a contact member is formed in a substantially U-shape from the base and extends elastically, and is provided at the tip of the arm and is in contact / non-contact with a movable contact. And a contact portion. Then, the contact portion is pressed against the movable contact due to the elasticity of the arm portion. In addition, the contact member is made of a material having a predetermined spring property higher than that of the fixed terminal member so that the contact member follows the movable contact and makes a good contact with the movable contact (so as to maintain the contact).
[0004]
[Patent Document 1]
UK Patent No. 1585300
[0005]
[Problems to be solved by the invention]
However, in the connection structure as described above, the contact member is in a predetermined posture with respect to the terminal member in a state where the upright portion is merely inserted into the connection hole (a state before being connected and fixed by split caulking or the like). Not maintained. Therefore, for example, in a state where the upright portion is simply inserted into the connection hole, when the wafer is transported to the next station on the production line and split crimping is performed at the station, the contact portion side of the contact member falls down during transport. There is a possibility that the base side of the contact member will be lifted. In addition, even when the connection is fixed by caulking or the like, it is necessary to maintain the posture by some method. Therefore, in the connection structure as described above, it is necessary to hold the predetermined posture by using, for example, a hand or a special device, or to correct the predetermined posture appropriately. Therefore, there is a problem in that the assembling workability is poor and the assembling cost is increased.
[0006]
An object of the present invention is to provide a connection structure of a terminal member and a wiper motor that can be assembled at a low cost with extremely excellent assembling workability by a simple configuration.
[0007]
[Means for Solving the Problems]
According to the first aspect of the invention, a second terminal member formed of a conductive metal plate is electrically connected and fixed in a predetermined posture to a first terminal member formed of a conductive metal plate. A connection structure for a terminal member, wherein one of the first and second terminal members is provided with an upright standing portion, and the other of the first and second terminal members is inserted with the upstanding portion. Connection hole, and a pressing piece cut and raised from an inner peripheral surface of the connection hole in an oblique direction of the insertion direction of the upright portion, and the upright portion is inserted into the connection hole and the predetermined posture and In this state, the upright portion was pressed by the pressing piece, and in this state, the first and second terminal members were connected and fixed by welding or caulking.
[0008]
According to a second aspect of the present invention, in the connection structure for a terminal member according to the first aspect, the other of the first and second terminal members has a base portion in which the connection hole is formed, and the base portion has a substantially rectangular shape. A contact member having an arm portion bent and formed in a character shape and extending and a contact portion provided at a tip of the arm portion.
[0009]
According to a third aspect of the present invention, in the connection structure of the terminal member according to the second aspect, the pressing piece extends in substantially the same direction as the arm portion.
According to a fourth aspect of the present invention, in the connection structure of the terminal member according to any one of the first to third aspects, the upright portion is split and caulked to connect and fix the first and second terminal members. .
[0010]
According to a fifth aspect of the present invention, in the connection structure of the terminal member according to the fourth aspect, the first and second terminal members are further connected and fixed by welding.
According to a sixth aspect of the present invention, there is provided a connection structure for a terminal member according to any one of the first to fifth aspects, an output shaft driven to rotate, and a predetermined member which rotates in conjunction with the rotation of the output shaft. A movable contact having a conductive pattern, wherein the first and second terminal members are brought into contact / non-contact with the movable contact when the output shaft rotates, so that the wiper arm moves the predetermined stop position of the vehicle window. To stop at.
[0011]
According to a seventh aspect of the present invention, in the connection structure of the terminal member according to the second aspect, the contact member is a plate-shaped metal spring material having a higher spring property than one of the first and second terminal members. It is composed.
[0012]
(Action)
According to the first aspect of the present invention, one of the first and second terminal members is provided with an upright standing portion, and the other of the first and second terminal members is inserted with the upstanding portion. And a pressing piece cut and raised from an inner peripheral surface of the connection hole in an oblique direction in the insertion direction of the upright portion. Then, the upright portion is pressed by the pressing piece in a state where the upright portion is inserted into the connection hole and is in the predetermined posture, so that the first and second terminal members can be maintained in the predetermined posture. it can. In this state, the first and second terminal members are connected and fixed by welding or caulking. Therefore, when the connection and fixing are performed by welding or caulking, it is not necessary to hold the posture using, for example, a hand or a special device. As a result, the assembling workability is extremely excellent with a simple configuration, and the assembling can be performed at low cost.
[0013]
According to the second aspect of the present invention, the other of the first and second terminal members has a base portion in which the connection hole is formed, and an arm portion that is bent and formed in a substantially rectangular shape from the base portion. Since the contact member has a contact portion provided at the tip of the arm portion, the contact portion is likely to fall down when no pressing piece is formed in the connection hole. However, a pressing piece is provided in the connection hole, and the first and second terminal members are maintained in a predetermined posture to prevent the contact portion from falling down. Therefore, when the pressing piece is not formed in the connection hole, The assembly workability is greatly improved in comparison.
[0014]
According to the third aspect of the present invention, since the pressing piece extends in substantially the same direction as the arm portion, the pressing piece is easily subjected to the force of falling on the contact portion side, and the function of preventing the contact portion from falling down. Is improved.
[0015]
According to the fourth aspect of the present invention, the upright portion is inserted into the connection hole to be in the predetermined posture, the upright portion is split and caulked, and the first and second terminal members are connected and fixed. The first and second terminal members can be easily connected and fixed.
[0016]
According to the invention described in claim 5, the first and second terminal members are further welded and connected and fixed, so that a more reliable electrical connection can be obtained. According to the invention as set forth in claim 6, a wiper motor having first and second terminal members for stopping the wiper arm at a predetermined stop position of the vehicle window by being brought into contact / non-contact with the movable contact. Accordingly, the same effect as the effect of the invention according to any one of claims 1 to 5 can be obtained.
[0017]
According to the invention described in claim 7, the contact member is made of a plate-shaped metal spring material having a higher spring property than one of the first and second terminal members. Pressing contact can be made so as to favorably follow a contact point or the like.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is embodied in a wiper motor of a vehicle wiper device will be described with reference to FIGS.
[0019]
As shown in FIG. 1, the motor 1 includes a motor main body 2 and a speed reduction unit 3. The motor body 2 includes a yoke housing 4 having a substantially bottomed cylindrical shape, a plurality of magnets 5 fixed to the inner peripheral surface of the yoke housing 4, and a rotor (rotor) 6 housed in the yoke housing 4. It has. The rotor 6 has a rotating shaft 7, and a worm 8 is formed on the tip side of the rotating shaft 7 protruding from the opening of the yoke housing 4.
[0020]
The speed reduction unit 3 includes a housing 11, a housing cover 12, a worm wheel 13, a unit plate 14 (see FIG. 3), and a rotating body 15 (see FIG. 2). The worm 8, the worm wheel 13, the unit plate 14 and the rotating body 15 are housed and held inside the housing 11 and the housing cover 12. At this time, the worm 8 and the worm wheel 13 are rotatably supported and engaged with each other, and an output shaft (not shown) fixed so as to be integrally rotatable with the worm wheel 13 passes through a through hole (not shown) formed in the housing 11. And is projected outside. The output shaft of the worm wheel is connected to a wiper arm (wiper blade) via a link mechanism (not shown) or the like.
[0021]
As shown in FIG. 2, the housing cover 12 is made of a resin material, has a substantially plate shape, and is formed in a shape capable of closing an opening of the housing 11. The housing cover 12 has a unit accommodating recess 12 a for accommodating the unit plate 14. In the housing cover 12, an inclined connector housing portion 12 b is formed in a tubular shape on the opposite side (left side in FIG. 2) of the side on which the motor body 2 is fixed.
[0022]
The unit plate 14 is made of an electrically insulating material (resin material), and is formed in a substantially rectangular parallelepiped shape corresponding to the unit accommodating recess 12a as shown in FIGS. 3 and 4, to which various electric circuit components described later are fixed. You. As shown in FIG. 3, a rotation support portion 14a for rotatably supporting the rotating body 15 (see FIG. 2) is formed substantially at the center of the unit plate 14. In the vicinity of the rotation support portion 14a of the unit plate 14, a through hole 14b (see FIGS. 4 to 6) penetrating in the axial direction of the rotation support portion 14a is formed. In the present embodiment, three through holes 14b are provided in parallel.
[0023]
As shown in FIGS. 3 and 4, the electric circuit component according to the present embodiment includes first and second power supply terminals 21 and 22, and first to third fixed terminal members 23 to 25 as first terminal members. , First and second capacitors 26 and 27, and first to third contact members 28 to 30 as second terminal members. The electric circuit components 21 to 27 except for the first to third contact members 28 to 30 are arranged on the surface of the unit plate 14 facing the housing cover 12 (see FIG. 4).
[0024]
More specifically, the first and second power supply terminals 21 and 22 have one ends 21 a and 22 a connected to a power supply brush (not shown) provided on the motor body 2 and the other ends 21 b and 22 b fitted into the connector housing 12 b. It is arranged along the longitudinal direction of the unit plate 14 so as to be connected to the terminal of the external connector to be attached.
[0025]
The first to third fixed terminal members 23 to 25 are formed of a conductive metal plate. The first to third fixed terminal members 23 to 25 are formed with upright portions 23a to 25a (see FIGS. 5 and 6). 5 and 6, the second fixed terminal member 24 is shown, and the first and third fixed terminal members 23 and 25 are substantially the same as the second fixed terminal member 24, so that the drawings are omitted. The upright portions 23a to 25a of the present embodiment are formed by bending one ends of the first to third fixed terminal members 23 to 25. The first to third fixed terminal members 23 to 25 are arranged such that the upright portions 23a to 25a pass through the through holes 14b and protrude to the non-opposite side of the housing cover 12, and the other ends 23b to 25b are It is arranged on the unit plate 14 so as to be connected to a terminal of an external connector fitted to the connector housing portion 12b. 3, 5, and 6 show a state in which the upright portions 23 a to 25 a (the distal ends) are split and caulked, and FIG. 7 shows an upright portion before the split caulking is performed. 23a to 25a are illustrated. Further, in the present embodiment, for the sake of convenience of description, the same reference numerals are given to the upright portions 23a to 25a in a state before the split crimping is performed.
[0026]
The first and second capacitors 26 and 27 are for removing (attenuating) noise generated on the side of the power supply brush, and the terminals thereof are connected to the first and second power supply side terminals 21 and 22 and the first and second power supply terminals. It is arranged so as to be connected to the fixed terminal member 23.
[0027]
The first to third contact members 28 to 30 are formed of a conductive metal plate. As shown in FIGS. 3 and 5, the first to third contact members 28 to 30 are formed by bending the base portions 28a to 30a and the base portions 28a to 30a in a substantially rectangular shape (to be inclined). The arm portions 28b to 30b extend and the contact portions 28c to 30c provided at the tips of the arm portions 28b to 30b. In FIG. 5, the second contact member 29 is shown, and the first and third contact members 28 and 30 are substantially the same as the second contact member 29, so that the same sectional view is omitted. The base portions 28a to 30a are formed by connecting holes 28d to 30d into which the upright portions 23a to 25a (see FIG. 7) can be inserted before the split crimping is performed, and an inner peripheral surface of the connecting holes 28d to 30d. Pressing pieces 28e to 30e (see FIGS. 3 and 5) cut and raised obliquely in the insertion direction of the upright portions 23a to 25a are formed. In the present embodiment, connection holes 28d to 30d are formed in a substantially circular shape, and pressing pieces 28e to 30e extend from a part of the inner peripheral surface. The direction in which the pressing pieces 28e to 30e extend is set in substantially the same direction as the arm portions 28b to 30b. That is, the pressing pieces 28e to 30e are substantially parallel to the direction in which the arm portions 28b to 30b extend from the inner peripheral surface of the connection holes 28d to 30d where the arm portions 28b to 30b are not formed (the upper right direction in FIG. 5). Is extended.
[0028]
The first to third contact members 28 to 30 are inserted into the connection holes 28d to 30d, and the upright portions 23a to 25a (see FIG. 7) in a state before crimping are inserted into the connection holes 28d to 30d. The portions 23a to 25a are held (temporarily held) on the first to third fixed terminal members 23 to 25 by being pressed by the pressing pieces 28e to 30e. Then, in this state, the upright portions 23a to 25a are split and caulked (V-shaped grooves are formed as shown in FIG. 6), whereby the first to third contact members 28 to 30 are fixed to the first to third fixing members. The terminal members 23 to 25 are connected and fixed in a predetermined posture.
[0029]
The contact portion 29c of the contact portions 28c to 30c of the present embodiment is formed in a hemispherical shape so as to protrude from the plane of the unit plate 14. Further, among the contact portions 28c to 30c, the contact portions 28c and 30c have relatively thin conductive pins fixed to the tips of the arm portions 28b and 30b in order to improve the detection accuracy of the contact as compared with the contact portion 29c. The first to third contact members 28 to 30 are arranged in parallel with each other, and are arranged such that their contact portions 28c to 30c are aligned on a straight line extending in the radial direction from the rotation support portion 14a.
[0030]
The unit plate 14 configured as described above is housed and held in the unit housing recess 12a of the housing cover 12, as shown in FIG. At this time, the connector pins 21b to 25b of the first and second power supply terminals 21, 22 and the first to third fixed terminal members 23 to 25 are led out into the connector housing 12b.
[0031]
The rotating body 15 is rotatably supported by the rotation supporting portion 14a of the unit plate 14. A movable contact 31 (shown by a broken line in FIG. 2) having a predetermined conductive pattern is fixed to a lower surface of the rotating body 15 (a surface on the side of the housing cover 12 in FIG. 2). The contact portions 28c to 30c of the first to third contact members 28 to 30 are pressed against the lower surface (the movable contact 31) of the rotating body 15 by the elasticity of the arm portions 28b to 30b. The first to third contact members 28 to 30 are higher than the first to third fixed terminal members 23 to 25 so that the first to third fixed terminal members 23 to 25 can favorably follow the movable contact 31 and come into pressure contact (to maintain the contact). It is made of a material having a predetermined spring property. In the present embodiment, the first to third contact members 28 to 30 are made of a phosphor bronze metal plate material (plate-shaped metal spring material). The first to third fixed terminal members 23 to 25 are made of a tin-plated brass metal plate.
[0032]
The housing cover 12 to which the unit plate 14 and the rotating body 15 are fixed as described above is fixed to the housing 11 so as to close the opening of the housing 11. At this time, the connecting projection 15a provided on the upper surface (the surface opposite to the worm wheel 13) of the rotating body 15 and the connecting projection (not shown) provided on the worm wheel 13 engage. Thereby, it is connected to the worm wheel 13 (output shaft) so as to be integrally rotatable.
[0033]
In the vehicle wiper device (motor 1) configured as described above, the movable contact 31 that rotates integrally with the output shaft (worm wheel 13), the first to third contact members 28 to 30 (contact portions 28c to 30c), and Are contacted / non-contacted, the rotation angle of the output shaft (worm wheel 13) is detected. Therefore, the wiper arm can be stopped at the predetermined stop position of the vehicle window (automatically) regardless of the off-operation timing of the wiper switch provided at the vehicle driver's seat.
[0034]
Next, the characteristic operation and effect of the above embodiment will be described below.
(1) The first to third contact members 28 to 30 have connection holes 28d to 30d into which the upright portions 23a to 25a (see FIG. 7) of the first to third fixed terminal members 23 to 25 can be inserted. Pressing pieces 28e to 30e (see FIGS. 3 and 5) cut and raised from the inner peripheral surface in an oblique direction in the insertion direction of the upright portions 23a to 25a are formed. Then, the upright portions 23a to 25a are inserted into the connection holes 28d to 30d and set in a predetermined posture, and the upright portions 23a to 25a are pressed by the pressing pieces 28e to 30e. The members 23 to 25 and the first to third contact members 28 to 30 are maintained (temporarily held) in a predetermined posture. Then, in this state, split crimping is performed, and the first to third fixed terminal members 23 to 25 and the first to third contact members 28 to 30 are connected and fixed in a predetermined posture. There is no need to hold the posture using hands or special devices. As a result, the assembling work is excellent and the assembling can be performed at low cost.
[0035]
(2) The first to third contact members 28 to 30 have bases 28 a to 30 a in which connection holes 28 d to 30 d are formed, and an arm that extends from the bases 28 a to 30 a by being bent in a substantially rectangular shape. 28b to 30b, and contact portions 28c to 30c provided at the tips of the arm portions 28b to 30b. Therefore, although the contact portions 28c to 30c are configured to easily fall down, the pressing pieces 28e to 30e are formed in the connection holes 28d to 30d, so that the first to third fixed terminal members 23 to 25 and the first to third fixed terminal members 23 to 25 are formed. The contact members 28 to 30 are maintained (temporarily held) in a predetermined posture. This prevents the contact portions 28c to 30c from falling (falling) during, for example, transportation while the upright portions 23a to 25a are merely inserted into the connection holes 28d to 30d (see FIG. 7). The base portions 28a to 30a are prevented from floating. Further, when the connection is fixed, it is not necessary to hold the posture using, for example, a hand or a special device. As a result, assembling workability is greatly improved as compared with the case where the pressing piece is not formed in the connection hole.
[0036]
(3) The direction in which the pressing pieces 28e to 30e extend is set in substantially the same direction (substantially parallel direction) as the arm portions 28b to 30b. Therefore, the pressing pieces 28e to 30e are easily subjected to the force of falling on the contact portions 28c to 30c side, and the function of preventing the contact portions 28c to 30c from falling is improved (it becomes more difficult to fall).
[0037]
(4) The first to third fixed terminal members 23 to 25 and the first to third contact members 28 to 30 are easily connected and fixed by splitting and crimping the upright portions 23a to 25a. Can be.
[0038]
The above embodiment may be modified as follows.
In the above embodiment, the connection structure of the terminal members (first to third fixed terminal members 23 to 25 and first to third contact members 28 to 30) in the motor 1 for the wiper is embodied. It may be embodied as a connection structure of a terminal member used in the device.
[0039]
In the above embodiment, the first to third fixed terminal members 23 to 25 and the first to third contact members 28 to 30 are unit plates by providing the upright portions 23a to 25a through the through holes 14b. 14, but may be embodied as a connection structure of terminal members provided without intervening objects.
[0040]
For example, it may be changed as shown in FIGS. As shown in FIG. 8, an upright portion 41a is formed at one end of the first terminal member 41 by bending. Further, the base 42a of the second terminal member 42 has a connection hole 42b into which the standing portion 41a in a state before being subjected to the crimping can be inserted, and a connection hole 42b from the inner peripheral surface of the connection hole 42b. A pressing piece 42c cut and raised in an oblique direction of the insertion direction is formed. Then, in a state where the upright portion 41a is inserted into the connection hole 42b and is in a predetermined posture, the upright portion 41a is pressed by the pressing piece 42c, and the first and second terminal members 41, 42 are split and caulked. Connection is fixed. The second terminal member 42 has an extension 42d extending in a crank shape from the base 42a and extending in a straight line with the first terminal member 41. The same effect as the effects (1) and (4) of the above-described embodiment can be obtained also in the connection structure of the terminal members provided without such an interposition.
[0041]
Further, for example, it may be changed as shown in FIGS. Note that this example has a configuration in which a part of the above-described other example (see FIG. 8) is changed, and therefore only the changed points will be described. As shown in FIG. 9, a base 42 a of the second terminal member 42 is formed with a welded portion 42 e extending to be able to contact the first terminal member 41. The first and second terminal members 41 and 42 are connected and fixed by welding a welding portion 42e in addition to the split caulking. In FIG. 9, the welded portion is shown by a two-dot chain line. In this way, a more reliable electrical connection can be obtained.
[0042]
Further, for example, it may be changed as shown in FIGS. As shown in FIG. 10, an upright portion 51 a is formed in the middle of the first terminal member 51 by being cut and raised vertically. The base 52a of the second terminal member 52 has a connection hole 52b into which the upright portion 51a in a state before being subjected to the crimping can be inserted, and a connection hole 52b from the inner peripheral surface of the connection hole 52b. A pressing piece 52c cut and raised in an oblique direction of the insertion direction is formed. Then, in a state where the upright portion 51a is inserted into the connection hole 52b and is in a predetermined posture, the upright portion 51a is pressed by the pressing piece 52c, is caulked, and further, a welding portion 52d which is an intermediate portion of the second terminal member 52. Are welded to the distal end of the first terminal member 51, so that the first and second terminal members 51 and 52 are connected and fixed. In FIG. 10, the welded portion is shown by a two-dot chain line. Even in this case, the same effect as the effect (1) of the above embodiment can be obtained, and more reliable electrical connection can be obtained.
[0043]
In the above-described embodiment, the direction in which the pressing pieces 28e to 30e extend is set in substantially the same direction (substantially parallel direction) as the arm parts 28b to 30b, but the upright parts 23a to 25a are connected to the connection holes 28d. It may be changed to another direction as long as it can be inserted and inserted into a predetermined position and maintained (temporarily held) by pressing in a predetermined posture. For example, it extends in a direction opposite to a direction in which the arm portions 28b to 30b extend from a side of the inner peripheral surfaces of the connection holes 28d to 30d where the arm portions 28b to 30b are formed (a substantially symmetrical direction around the upright portions 23a to 25a). Pressing piece may be used. Even in this case, effects similar to the effects (1), (2), and (4) of the above embodiment can be obtained.
[0044]
In the above embodiment, the first to third fixed terminal members 23 to 25 and the first to third contact members 28 to 30 are connected and fixed by splitting and crimping the upright portions 23a to 25a. If the connection is fixed while maintaining (temporarily holding) a predetermined posture by the steps 30 to 30e, the connection may be fixed by another method such as another caulking or welding. Even in this case, effects similar to the effects (1) to (3) of the above embodiment can be obtained.
[0045]
In the above embodiment, the upright portions 23a to 25a are formed in the first to third fixed terminal members 23 to 25, and the connection holes 28d to 30d and the pressing pieces 28e to 30e are formed in the first to third contact members 28 to 30. However, the upright portions may be formed in the first to third contact members, and the connection holes and the pressing pieces may be formed in the first to third terminal members. Also in this case, the assembling workability is excellent and the assembling can be performed at low cost.
[0046]
【The invention's effect】
As described in detail above, according to the first to fifth and seventh aspects of the present invention, there is provided a connection structure of a terminal member which can be extremely easily assembled with a simple structure and can be assembled at low cost. Can be.
[0047]
Further, according to the invention as set forth in claim 6, it is possible to provide a wiper motor that can be assembled at a very low cost with a simple structure and extremely excellent assembling workability.
[Brief description of the drawings]
FIG. 1 is an external view showing a motor according to an embodiment.
FIG. 2 is an explanatory diagram for explaining a housing cover side member of the present embodiment.
FIG. 3 is an explanatory diagram illustrating a unit plate according to the embodiment.
FIG. 4 is an explanatory diagram illustrating a unit plate according to the embodiment.
FIG. 5 is a sectional view taken along line AA of FIG. 3;
FIG. 6 is a sectional view taken along line BB of FIG. 3;
FIG. 7 is an explanatory diagram for describing an upright portion in a state before split crimping.
FIG. 8A is a plan view showing another connection structure. (B) Sectional drawing which similarly shows a connection structure.
FIG. 9A is a plan view showing another connection structure. (B) Sectional drawing which similarly shows a connection structure.
FIG. 10A is a plan view showing another connection structure. (B) Sectional drawing which similarly shows a connection structure.
[Explanation of symbols]
23 to 25: first to third fixed terminal members (first terminal members), 23a to 25a, 41a, 51a: standing portions, 28 to 30: first to third contact members (second terminal members), 28a to 30a: base, 28b to 30b: arm, 28c to 30c: contact, 28d to 30d, 42b, 52b: connection hole, 28e to 30e, 42c, 52c: pressing piece, 31: movable contact, 41, 51 ... 1 terminal member, 42, 52 ... second terminal member.

Claims

A second terminal member (28-30, 42, 52) formed of a conductive metal plate is fixed to a first terminal member (23-25, 41, 51) formed of a conductive metal plate. A connection structure of a terminal member for electrically connecting and fixing in a posture of
One of the first and second terminal members is provided with upright standing portions (23a to 25a, 41a, 51a),
The other of the first and second terminal members has connection holes (28d to 30d, 42b, and 52b) into which the upright portions are inserted, and an oblique direction from the inner peripheral surface of the connection holes in the insertion direction of the upright portions. Press pieces (28e to 30e, 42c, 52c) cut and raised are provided.
The upright portion is pressed against the pressing piece in a state where the upright portion is inserted into the connection hole and in the predetermined posture, and the first and second terminal members are connected and fixed by welding or caulking in that state. A connection structure for a terminal member.

The connection structure for a terminal member according to claim 1,
The other of the first and second terminal members has a base portion (28a-30a) in which the connection hole (28d-30d) is formed, and an arm portion bent and formed from the base portion in a substantially U shape. 28b to 30b) and a contact member (28 to 30) having a contact portion (28c to 30c) provided at the tip of the arm portion.

The connection structure for a terminal member according to claim 2,
The connection structure of a terminal member, wherein the pressing pieces (28e to 30e) extend in substantially the same direction as the arm portion.

The connection structure for a terminal member according to any one of claims 1 to 3,
The connection structure of a terminal member, wherein the upright portion is split and caulked, and the first and second terminal members are connected and fixed.

The connection structure for a terminal member according to claim 4,
The connection structure of a terminal member, wherein the first and second terminal members are further welded and connected and fixed.

A connection structure for a terminal member according to any one of claims 1 to 5,
An output shaft that is driven to rotate,
A movable contact (31) having a predetermined conductive pattern that rotates in conjunction with the rotation of the output shaft, wherein one of the first and second terminal members contacts the movable contact when the output shaft rotates. A wiper motor for stopping a wiper arm at a predetermined stop position of a vehicle window by being non-contacted.

The connection structure for a terminal member according to claim 2,
The connection structure for a terminal member, wherein the contact member is formed of a plate-shaped metal spring material having a higher spring property than one of the first and second terminal members.