JP4215191B2

JP4215191B2 - Handle shaft rattling prevention device

Info

Publication number: JP4215191B2
Application number: JP2001335310A
Authority: JP
Inventors: 健一藤田; 正人関口
Original assignee: ＹｋｋＡｐ株式会社
Priority date: 2001-10-31
Filing date: 2001-10-31
Publication date: 2009-01-28
Anticipated expiration: 2021-10-31
Also published as: JP2003138793A

Description

【０００１】
【発明の属する技術分野】
本発明は、ドアに取付けた錠の錠杆作動部材の軸取付用孔、ハンドルの軸取付用孔に挿入して取付けたハンドル軸のがたつきを防止するハンドル軸のがたつき防止装置に関する。
【０００２】
【従来の技術】
ハンドル軸は錠の錠杆作動部材の軸取付用孔、ハンドルの軸取付用孔に挿入して取付けられ、そのハンドルでハンドル軸を回転することで錠杆作動部材が回転し、錠杆が出入りして施錠・解錠される。
前述のハンドル軸は軸取付用孔内でがたつくことがあり、そのがたつきを防止する装置が種々提案されている。
例えば、特開平８−１３８５９号公報に示すがたつき防止装置が提案されている。
この装置は、ハンドル軸に板ばねを取付け、その板ばねを軸取付用孔の内面に押しつけてハンドル軸が軸取付用孔に対してがたつくことがないようにしている。
【０００３】
また、特開２０００−１２０３０６号公報に示すがたつき防止装置が提案されている。
この装置はハンドル軸に溝を形成し、この溝に弾性部材を取付け、そのハンドル軸を軸取付用孔に挿入することで、弾性部材が軸取付用孔の一つの内面を押圧し、その反発力でハンドル軸を軸取付用孔の他の内面に押しつけることでハンドル軸が軸取付用孔に対してがたつくことがないようにしている。
【０００４】
【発明が解決しようとする課題】
前者のハンドル軸のがたつき防止装置は、板ばねの山形部が軸取付用孔の内面に接してがたつきを防止しているので、ハンドル軸の回転操作力で板ばねが変位し易く、回転操作力に対して不安定で、しかも、板ばねは早期にへたるからハンドル軸の軸取付用孔に対するがたつきを長期間に亘って確実に防止できない。
また、板ばねをハンドル軸にビス、ねじ、溶接などで固定する作業が必要であるから、製作コストが高い。
【０００５】
後者のハンドル軸のがたつき防止装置は、ウレタン又はゴムより作られた弾性部材を用い、ハンドル軸を軸取付用孔に挿入する時に弾性部材を大きく圧縮変形させ、その反発力を利用してがたつきを防止しているので、ハンドル軸の回転操作力で弾性部材が変形し易く、不安定である。
よって、前者の装置と同様にハンドル軸の軸取付用孔に対するがたつきを確実に防止できない。
また、ハンドル軸の軸方向に連続した溝に弾性部材が取付けてあるので、ハンドル軸を軸取付用孔に挿入する際に弾性部材が軸方向に動くことがあり、ハンドル軸を軸取付用孔に挿入する作業がやりずらい。
【０００６】
本発明は前述の課題を解決するためになされたもので、次のことを満足したハンドル軸のがたつき防止装置を提供することを目的とする。
第１は、ハンドル軸の軸取付用孔に対するがたつきを長期間に亘って確実に防止できること。
第２は、製作コストが安いこと。
第３は、ハンドル軸を軸取付用孔に挿入する作業がやり易いこと。
【０００７】
【課題を解決するための手段】
第１の発明は、軸取付用孔８，１３に挿入したハンドル軸４が軸取付用孔８，１３に対してがたつくことを、当該ハンドル軸４の取付部３０に取付けたガタ防止部材４０を、前記取付用孔８，１３の内面に圧接することで防止するハンドル軸のがたつき防止装置であって、
前記取付部３０は、前記ハンドル軸４の軸方向に対して直交するように形成し、かつハンドル軸４の第２面２１に開口した取付用の孔と、ハンドル軸４の第２面２１と相対向した第１面２０に開口し、かつ第１面２０および第２面２１と平行な断面における面積が取付用の孔の当該断面における面積よりも大きい凹部とで段付き形状とし、
前記取付用の孔は、前記第２面２１および前記凹部のみに開口した丸形状の孔であり、
前記ガタ防止部材４０は、硬質樹脂より成り、前記取付用の孔に嵌合する取付用の軸部と、この取付用の軸部よりも前記断面における面積が大きく前記凹部に嵌まり合うガタ防止用の軸部とで段付き軸形状とし、
前記ガタ防止部材４０は前記取付部３０に、その取付用の軸部が前記取付用の孔に、ハンドル軸４の軸方向に動かないように嵌合すると共に、当該取付用の軸部の面がハンドル軸４の第２面２１から突出して取付け、ガタ防止用の軸部が前記凹部に嵌まり合うと共に、当該ガタ防止用の軸部の面がハンドル軸４の第１面２０から突出して取付け、
このガタ防止用の軸部の面および取付用の軸部の面が前記取付用孔８，１３の内面に圧接して取付けられることを特徴とするハンドル軸のがたつき防止装置である。
【０００８】
第２の発明は、第１の発明において、ハンドル軸４の第１面２０に開口した大径孔３１で凹部とし、この大径孔３１と段差部３３を介して連続し、かつ前記ハンドル軸４の第２面２１に開口した小径孔３２で取付用の孔とし、取付部３０を段付き形状の孔とし、
前記小径孔３２にハンドル軸４の軸方向に動かないように嵌合した小径部４２で取付用の軸部とし、この小径部４２と段差部４３を介して連続した大径部４１でガタ防止用の軸部とし、ガタ防止部材４０を段付きの軸形状とし、
前記ガタ防止部材４０は前記取付部３０に、その小径部４２が前記小径孔３２にハンドル軸４の軸方向に動かないように嵌合すると共に、その端面４２ｃがハンドル軸４の第２面２１から突出し、大径部４１が前記大径孔３１に嵌まり合うと共に、大径部４１の端面４１ａがハンドル軸４の第１面２０から突出して取付けられ、その大径部４１の端面４１ａと前記小径部４２の端面４２ｃが前記取付用孔８，１３の２つの内面にそれぞれ圧接しているハンドル軸のがたつき防止装置である。
【０００９】
第３の発明は、第２の発明において、ガタ防止部材４０の全長が前記ハンドル軸４の第１面２０と第２面２１との間の寸法より大きく、そのガタ防止部材４０の段差部４３が取付部３０の段差部３３に接した状態で大径部４１の端面４１ａが第１面２０から突出し、かつ小径部４２の端面４２ｃが第２面２１から突出するようにし、その大径部４１の端面４１ａ、小径部４２の端面４２ｃを、軸取付用孔８，１３の２つの内面にそれぞれ圧接したハンドル軸のがたつき防止装置である。
【００１０】
第４の発明は、第３の発明において、大径部４１、小径部４２は、ハンドル軸４を軸取付用孔８，１３に挿入する際の挿入ガイド用のガイド面を有し、
前記ガイド面を形成した部分のガタ防止部材４０の軸方向長さは、ガタ防止部材４０の全長とハンドル軸４の第１面２０と第２面２１との間の寸法の差の半分よりも長いハンドル軸のがたつき防止装置である。
【００１１】
第５の発明は、軸取付用孔８，１３に挿入したハンドル軸４が軸取付用孔８，１３に対してがたつくことを、当該ハンドル軸４の取付部３０に取付けたガタ防止部材４０を、前記取付用孔８，１３の内面に圧接することで防止するハンドル軸のがたつき防止装置であって、
前記取付部３０は、前記ハンドル軸４の軸方向に対して直交すると共に、対向した２つの角部に向かうように形成された凹陥部３４と、この凹陥部３４の底面３４ａに開口した孔３５で段付き形状とし、
前記ガタ防止部材４０は、硬質樹脂より成り、前記孔３５に嵌合する軸状部４４と、この軸状部４４の一端部に設けた頭部４５で段付き軸形状とし、
前記ガタ防止部材４０は前記取付部３０に、その軸状部４４が前記孔３５にハンドル軸４の軸方向に動かないように嵌合し、頭部４５が凹陥部３４に嵌合すると共に、頭部４５の端面が前記２つの角部のうちの一方の角部を形成する隣接した２つの面から突出して取付けられ、
その頭部４５の端面が前記軸取付用孔８，１３の内面に圧接していることを特徴とするハンドル軸のがたつき防止装置である。
【００１２】
【作用】
第１の発明によれば、ハンドル軸４の取付部３０に取付けたガタ防止部材４０のガタ防止用の軸部の面および取付用の軸部の面が軸取付用孔８，１３の内面に圧接しているので、ハンドル軸４の軸取付用孔８，１３に対するがたつきを防止できる。
また、ガタ防止部材４０は硬質樹脂であるから、ハンドル軸４に連結したハンドル操作力でガタ防止部材４０が変位し難い。しかも、ガタ防止部材４０は耐久性に優れ早期に劣化しない。
これらが相俟って、ハンドル軸４の軸取付用孔８，１３に対するがたつきを長期間に亘って確実に防止できる。
【００１３】
また、ガタ防止部材４０は硬質樹脂で、その取付用の軸部がハンドル軸４の取付部３０の取付用の孔に、そのハンドル軸４の軸方向に動かないように嵌合して取付けてあるので、ハンドル軸４を軸取付用孔８，１３に挿入する際にガタ防止部材４０が軸方向に動くことがない。
よって、ハンドル軸４を軸取付用孔８，１３に容易に挿入して取付けできる。
また、ガタ防止部材４０を固着するための手段、例えばねじ、ピン、溶接などが不要で、製作コストが安い。
また、ガタ防止部材４０の取付用の軸部をハンドル軸４の取付用の孔に嵌合することでガタ防止部材４０をハンドル軸４に強固に取付け、第１・第２面２０，２１と平行な断面における面積が取付用の孔の当該断面における面積よりも大きなガタ防止用の軸部の面を取付用孔８，１３の内面に接するので、ガタ防止部材４０の軸取付用孔８，１３の内面に接する面積を大きくできる。
よって、より安定したハンドル軸４のがたつき防止が可能であると共に、大径孔のみを形成する場合に比べてハンドル軸４の強度低下が低減する。
【００１４】
第２の発明によれば、ハンドル軸４の取付部３０に取付けたガタ防止部材４０の大径部４１の端面４１ａおよび小径部４２の端面４２ｃが軸取付用孔８，１３の内面に圧接しているので、ハンドル軸４の軸取付用孔８，１３に対するがたつきを防止できる。
また、ガタ防止部材４０は硬質樹脂であるから、ハンドル軸４に連結したハンドル操作力でガタ防止部材４０が変位し難い。しかも、ガタ防止部材４０は耐久性に優れ早期に劣化しない。
これらが相俟って、ハンドル軸４の軸取付用孔８，１３に対するがたつきを長期間に亘って確実に防止できる。
また、ガタ防止部材４０は硬質樹脂で、その小径部４２がハンドル軸４の取付部３０の小径部３２に、そのハンドル軸４の軸方向に動かないように嵌合して取付けてあるので、ハンドル軸４を軸取付用孔８，１３に挿入する際にガタ防止部材４０が軸方向に動くことがない。
よって、ハンドル軸４を軸取付用孔８，１３に容易に挿入して取付けできる。
また、ガタ防止部材４０を固着するための手段、例えばねじ、ピン、溶接などが不要で、製作コストが安い。
また、ガタ防止部材４０の小径部４２をハンドル軸４の小径孔３２に嵌合することでガタ防止部材４０をハンドル軸４に強固に取付け、ガタ防止部材４０の大径部４１をハンドル軸４の幅とほぼ同一として軸取付用孔８，１３の内面に接する面積を大きくできる。
よって、より安定したハンドル軸４のがたつき防止が可能であると共に、大径孔のみを形成する場合に比べてハンドル軸４の強度低下が低減する。
【００１５】
第３の発明によれば、ガタ防止部材４０の段差部４３を取付部３０の段差部３３に接することで、大径部４１の端面４１ａがハンドル軸４の第１面２０から突出すると共に、小径部４２の端面４２ｃがハンドル軸４の第２面２１から突出する。
よって、ガタ防止部材４０をハンドル軸４の取付部３０に、その段差部４３が段差部３３に接するまで嵌合することで正しく取付けでき、そのガタ防止部材４０のハンドル軸４への取付けが容易である。
【００１６】
第４の発明によれば、ガイド面をガイドとして大径部４１、小径部４２を軸取付用孔８，１３内にスムーズに挿入できる。
また、ガタ防止部材４０の全長、ハンドル軸４の第１面２０と第２面２１との面の寸法に若干の誤差があってもガイド面がハンドル軸４の第１面２０、第２面２１から全て突出することがなく、前述のように大径部４１、小径部４２を軸取付用孔８，１３内にスムーズに挿入できる。
【００１７】
第５の発明によれば、ハンドル軸４の取付部３０に取付けたガタ防止部材４０の少なくとも頭部４５の端面が軸取付用孔８，１３の内面に圧接しているので、ハンドル軸４の軸取付用孔８，１３に対するがたつきを防止できる。
また、ガタ防止部材４０は硬質樹脂であるから、ハンドル軸４に連結したハンドル操作力でガタ防止部材４０が変位し難い。しかも、ガタ防止部材４０は耐久性に優れ早期に劣化しない。
これらが相俟って、ハンドル軸４の軸取付用孔８，１３に対するがたつきを長期間に亘って確実に防止できる。
また、ガタ防止部材４０は硬質樹脂で、その軸状部４４がハンドル軸４の取付部３０の孔３５に、ハンドル軸４の軸方向に動かないように嵌合して取付けてあるので、ハンドル軸４を軸取付用孔８，１３に挿入する際にガタ防止部材４０が軸方向に動くことがない。
よって、ハンドル軸４を軸取付用孔８，１３に容易に挿入して取付けできる。
また、ガタ防止部材４０を固着するための手段、例えばねじ、ピン、溶接などが不要で、製作コストが安い。
【００１９】
【発明の実施の形態】
錠装置の一例を図１に基づいて説明する。
錠１と、一方のハンドル２と、他方のハンドル３と、ハンドル軸４で錠装置を構成する。
前記錠１は、錠ケース５に錠杆６と錠杆作動部材、例えばハブ７を取付け、そのハブ７を回転することで錠杆６が錠ケース５から出入りする。前記ハブ７は軸取付用孔８を有する。
前記錠ケース５がドア９の凹陥部１０内に取付けられる。このドア９はハブ７と相対向した孔１１を有する。
【００２０】
前記一方のハンドル２は突起部２ａと握り部２ｂを有するレバーハンドルで、その突起部２ａの孔１２にハンドル軸４の軸方向一端部が回転しないように挿入され、抜け止め手段、例えばピン２ｃで抜け止めされる。
前記他方のハンドル３は突起部３ａと握り部３ｂを有するレバーハンドルで、その突起部３ａに軸取付用孔１３を有する。
例えば、突起部３ａには大径孔と小径孔で段付きの孔１４が形成してある。
この孔１４内にストッパ１５と筒体１６が挿入され、抜け止め手段、例えばピン３ｃで抜け止めされる。前記ストッパ１５は円形板状でハンドル軸挿通穴１７が形成してあり、このハンドル軸挿通穴１７は矩形状で対向した一対の開口縁と連続して係止片１８が一体的に設けてある。
前記筒体１６に軸取付用孔１３が形成してある。
このようにしたのは、後述するようにハンドル軸４の軸方向他端部を他方のハンドル３に着脱自在で、抜け出ないように取付けるためであって、突起部３ａに軸取付用孔１３を形成しても良い。
【００２１】
前記ハンドル軸４は四角形断面形状で、相対向した第１面２０と第２面２１及び相対向した第３面２２と第４面２３を有する。
前記軸取付用孔８、孔１２、軸取付用孔１３は四角形孔である。軸取付用孔８、軸取付用孔１３はハンドル軸４よりも若干大きく、ハンドル軸４は各軸取付用孔８，１３に隙間を有し、かつ回転しないように挿入する。
前記ハンドル軸４の第３面２２と第４面２３における軸方向他端寄りに係止溝２４がそれぞれ形成されている。
前記ハンドル軸４には一対の取付部３０が軸方向に間隔を置いて形成してある。この各取付部３０にガタ防止部材４０がそれぞれ取付けてある。
【００２２】
ハンドル軸４はドア９の一方側からドア９の孔１１、錠１のハブ７の軸取付用孔８を挿通して他端部がドア９の他方側に突出する。このハンドル軸４の他端部が筒体１６の軸取付用孔１３を挿通し、さらにストッパ１５のハンドル軸挿通穴１７に挿通して孔１４の小径孔まで挿入することでハンドル軸４に他方のハンドル３が連結される。
ハンドル軸４の係止溝２４がストッパ１５の係止片１８に係合するので、ハンドル軸４が抜け止めされる。
また、一方のガタ防止部材４０がハブ７の軸取付用孔８の内面に圧接し、他方のガタ防止部材４０が筒体１６の軸取付用孔１３の内面に圧接し、ハンドル軸４が軸取付用孔８，１３に対してがたつくことが防止される。
【００２３】
次に、ハンドル軸４の取付部３０とガタ防止部材４０の具体形状を図２〜図４に基づいて説明する。
取付部３０はハンドル軸４の第１面２０と第２面２１に貫通した丸形状の孔で、この孔は第１面２０に開口した大径孔３１と第２面２１に開口した小径孔３２で段差部３３を有する段付き形状の孔である。
前記大径孔３１の径Ｄ_１は第１面２０の幅Ｈとほぼ同一で、その大径孔３１の長さａ（第１面２０から段差部３３までの寸法）は第１面２０と第２面２１との間の寸法ｂに比べて小さい。例えば約１／８である。この大径孔３１の長さａは小径孔３２の長さ（ｂ−ａ）よりも小さい。
前記ハンドル軸４は金属製である。
【００２４】
前記ガタ防止部材４０は大径部４１と小径部４２で段差部４３を有する断面円形で段付きの軸形状である。
このガタ防止部材４０の全長ｃは前記各軸取付用孔８，１３の対向内面間の寸法（孔の大きさ）と同等以上で、その両端面が各軸取付用孔８，１３の対向内面に圧接する。
このガタ防止部材４０の全長ｃはハンドル軸４の前記寸法ｂ（段付き形状の孔の全長）よりも長い。
前記大径部４１の径ｄ_１は大径孔３１の径Ｄ_１よりも小さく、その大径部４１の長さ（端面４１ａと段差部４３との間の寸法）ｄは前記大径孔３１の長さａよりも長い。この大径部４１の長さｄと大径孔３１の長さａの差（ｄ−ａ）は前記ガタ防止部材４０の全長ｃと前記寸法ｂとの差（ｃ−ｂ）のほぼ半分である。
前記大径部４１の端面４１ａ側の周縁部は面取り加工して挿入ガイド用のガイド面、例えばテーパ面４１ｂとしてある。ガイド面は斜面、円弧面（Ｒ面）でも良い。
【００２５】
前記小径部４２の径ｄ_２は小径孔３２の径Ｄ_２と同等以上で、小径部４２は小径孔３２に嵌合する。
【００２６】
例えば、小径部４２は図４に示すように軸状部分４２ａと、その外周面に一体的に設けた複数の突起部分４２ｂを有し、その複数の突起部分４２ｂを連続した仮想円が径ｄ_２である。
小径部４２を前述の形状とすることで、小径部４２の複数の突起部分４２ｂと小径孔３２の内面が接触するから、その接触部分で小径部４２がハンドル軸４の軸方向に強固に取付けられると共に、その接触面積が小さく、小径部４２は小さな力で小径孔３２に圧入できる。
【００２７】
前記小径部４２の端面４２ｃ側の周縁部は面取り加工して挿入ガイド用のガイド面、例えばテーパ面４２ｄとしてある。ガイド面は斜面、円弧面（Ｒ面）でも良い。
このテーパ面４２ｄ、前記大径部４１のテーパ面４１ｂを形成した部分の長さｅは、前記ガタ防止部材４０の全長ｃとハンドル軸４の前記寸法ｂとの差（ｃ−ｂ）の半分（つまり、大径部４１、小径部４２のハンドル軸４の第１面２０、第２面２１からの突出寸法）よりも長い。
このようであるから、ハンドル軸４の段付き形状の孔（取付部３０）にガタ防止部材４０を圧入し、図３に示すように段差部４３と段差部３３を接すると、大径部４１の端面４１ａがハンドル軸４の第１面２０から突出すると共に、小径部４２の端面４２ｃがハンドル軸４の第２面２１から突出する。
また、ハンドル軸４の第１面２０はテーパ面４１ｂと対向し、第２面２１はテーパ面４２ｄと対向する。
しかも、前記テーパ面４１ｂ、４２ｄの長さｅが大径部４１、小径部４２の第１面２０、第２面２１からの突出寸法よりも長いので、段付き形状の孔の長さ、ガタ防止部材４０の全長ｃ、ハンドル軸４の前記寸法ｂに若干の寸法誤差があってもテーパ面４１ｂ，４２ｄの全てが第１面２０、第２面２１から突出することがない。つまり、大径部４１、小径部４２のハンドル軸４に対して直角となる面が第１面２０、第２面２１から突出することがない。
【００２８】
前記ガタ防止部材４０は、一定条件で試験を行い、引張り弾性率又は曲げ弾性率が１００，０００ｐｓｉ（７，０００ｋｇｆ／ｃｍ^２）以上（ＩＳＯＲ２９１）の硬質樹脂、例えば、ポリアセタール樹脂、ポリアミド６樹脂、ポリアミド６６樹脂、アクリロニトリル・ブタジエン・スチレン樹脂、アクリル樹脂、アクリロニトリル・エチレンプロピレンゴム・スチレン樹脂、アクリル・アクリロニトリル・スチレン樹脂、ポリプロピレン樹脂、ポリエチレン樹脂、ポリカーボネート樹脂、ポリエチレンテレフタレート樹脂、ポリスチレン樹脂などである。
【００２９】
次に、ハンドル軸４の取付けについて説明する。
ハンドル軸４の段付き形状の孔（取付部３０）にガタ防止部材４０を前述のようにして取付ける。
ハンドル軸４を軸取付用孔８，１３に挿入することで、大径部４１のテーパ面４１ｂ、小径部４２のテーパ面４２ｄをガイドとしてガタ防止部材４０が若干圧縮しながら軸取付用孔８，１３内に挿入される。
【００３０】
これによって、大径部４１の端面４１ａと小径部４２の端面４２ｃが軸取付用孔８，１３の対向した内面に強く押しつけられるから、ハンドル軸４が軸取付用孔８，１３に対してがたつくことが防止される。
また、ハンドル軸４に大径孔３１と小径孔３２を有する段付き形状の孔を形成し、ガタ防止部材４０を大径部４１と小径部４２を有する段付きの軸形状としたので、ガタ防止部材４０の大径部４１をハンドル軸４の幅Ｈとほぼ同一として軸取付用孔８，１３と接触する面積を大きくできる。
しかも、段差部３３と段差部４３を接することでガタ防止部材４０が位置決めされ、そのガタ防止部材４０のハンドル軸４の第１面２０、第２面２１からの突出量を簡単に正しく設定した値にできる。
【００３１】
図５に示すように、大径孔３１の長さａを長くし、その段差部３３とガタ防止部材４０の段差部４３との間に隙間が生じるようにしても良い。
【００３２】
前述のガタ防止部材４０は、その大径部４１を図６（ａ）に示すようにほぼ長円形状、図６（ｂ）に示すように長方形状としても良い。
また、図６（ｃ）に示すように小径部４２を複数設けても良い。この形状の時にはハンドル軸４に形成した大径孔３１の底面（段差部３３）に複数の小径孔３２を第２面２１に開口して形成することで取付部３０とする。
【００３３】
このようにすれば、大径部４１の面積が大きく、軸取付用孔８，１３の内面に接触する面積が大きいので、ハンドル軸４の軸取付用孔８，１３に対するがたつきをより一層確実に防止できる。
【００３４】
参考例としては図７に示すように、取付部３０をハンドル軸４の第１面２０から第２面２１まで同一径で円形の孔とし、ガタ防止部材４０を長手方向に亘って同一径で断面円形の軸形状としても良い。
【００３５】
また、取付部３０は図示を省略するが、ハンドル軸４の第１面２０から第２面２１まで貫通した四角形状の孔、三角形状の孔、円錐形状の孔、四角錐形状の孔、三角錐形状の孔などとしても良い。
この場合にはガタ防止部材４０を断面四角の軸形状、断面三角の軸形状、円錐体形状、四角錐体形状、三角錐形状とする。
【００３６】
図８と図９に示すようにハンドル軸４の相対向した２つの角部に孔を貫通して形成することで取付部３０とし、ガタ防止部材４０を角部を境として隣接した２つの面から突出する軸形状としても良い。
例えば、ハンドル軸４の第１面２０と第３面２２の第１の角部２５に形成した凹陥部３４と、第２面２１と第４面２３の第２の角部２６と前記凹陥部３４の底面３４ａに貫通した孔３５を有する段付き形状の孔を取付部３０とする。
ガタ防止部材４０は軸状部４４の一端部に頭部４５を一体的に設けた形状で、その軸状部４４が前記孔３５に嵌合し、頭部４５が凹陥部３４に嵌合するようにする。
頭部４５が凹陥部３４の底面３４ａに接することで位置決めする。
【００３７】
前記軸状部４４の他端面４４ａは第２の角部２６と同一角度の山型形状で、ハンドル軸４の第２面２１、第４面２３より突出する。この軸状部４４の他端面４４ａ寄りの２つの角部は面取り加工されて斜面４４ｂとしてあり、前述のガイド面を有している。円弧面でも良い。
前記頭部４５の端面４５ａは第１の角部２５と同一角度の山型形状で、ハンドル軸４の第１面２０、第３面２２より突出する。この頭部４５の端面４５ａ寄りの２つの角部は面取り加工されて斜面４５ｂとしてあり、前述のガイド面を有する。円弧面でも良い。
【００３８】
参考例としては、図１０に示すように、ハンドル軸４の第１の角部２５と第２の角部２６に長手方向に亘って同一大きさの孔を貫通して形成することで取付部３０とし、ガタ防止部材４０は長手方向に亘って同一大きさの軸形状で、山型形状の他端面４４ａと山型形状の端面４５ａを有する形状としても良い。
【００３９】
図９に示す実施の形態では、ガタ防止部材４０は断面矩形状であるが、断面円形状、断面三角形状などとしても良い。
また、図３、図５、図９ではガタ防止部材４０を１つとしたが、ハンドル軸４に２つのガタ防止部材４０を軸方向に離れ、かつ９０度位相をずらして取付けるようにしても良い。
【００４０】
参考例として、図１１に示すようにハンドル軸４の第１面２０に開口した大径孔３１と、この大径孔３１と連続し、かつ第２面２１に開口しない小径孔３２で段差部３３を有する段付き形状の孔を取付部３０とする。
ガタ防止部材４０は大径部４１と小径部４２で段差部４３を有する段付きの軸形状とする。その大径部４１を大径孔３１に嵌め合せると共に、小径部４２を小径孔３２に嵌合し、段差部４３を段差部３３に接する。この小径部４２は小径孔３２よりも若干短かい。前記大径孔３１の長さａと大径部４１の長さｄとの差（ｄ−ａ）よりもテーパ面４１ｂを形成した部分の長さｅが長い。
【００４１】
この場合には、大径部４１を図１２（ａ）に示すようにほぼ長円形状、図１２（ｂ）に示すように長方形状としても良い。
また、図１２（ｃ）に示すように小径部４２を複数設けても良い。この形状の時にはハンドル軸４に形成した大径孔３１の底面（段差部３３）に複数の小径孔３２を形成して取付部３０とする。
【００４２】
参考例としては、図１３に示すように、ハンドル軸４の第１面２０に開口した長手方向に亘って同一径の孔を第２面２１に開口しないように形成して取付部３０とする。
ガタ防止部材４０は長手方向に亘って同一径の軸形状とする。
【００４３】
図１１、図１３に示す参考例の場合には、取付部３０（段付き形状の孔、孔）を第１面２０以外の面に形成しても良い。
また、２つの面、３つの面、４つの面にそれぞれ取付部３０を形成して２つの面、３つの面、４つの面にそれぞれガタ防止部材４０を取付けても良い。
【００４４】
前述の図９に示す実施の形態では、ハンドル軸４の対向した２つの角部に貫通した段付き形状の孔、孔で取付部３０としたが、一方の角部に開口し、他方の角部には開口しない段付き形状の孔、孔で取付部３０としても良い。
例えば、図１４に示すようにハンドル軸４の第１の角部２５に開口した凹陥部３４と、この凹陥部３４の底面３４ａに開口し、かつ第２の角部２６に開口しない孔３５で段差部（底面３４ａ）を有する段付き形状の孔とする。
ガタ防止部材４０は、前記孔３５に嵌合する軸状部４４と前記凹陥部３４に嵌まり合う頭部４５を有する。その頭部４５の端面４５ａを山型形状としてハンドル軸４の第１面２０と第３面２２より突出するようにする。
この軸取付部４４は孔３５より短い。
【００４６】
図１４に示す実施の形態の場合には、取付部３０（段付き形状の孔、孔）を第２の角部２６、第１面２０と第４面２３との第３の角部２７、第２面２１と第３面２２との第４の角部２８のいずれかに形成し、各取付部３０にガタ防止部材４０を取付けしても良い。
また、第１の角部２５、第２の角部２６、第３の角部２７、第４の角部２８のいずれか２つの角部又は３つの角部、あるいは全ての角部に取付部３０を形成し、複数のガタ防止部材４０を取付けるようにしても良い。
【００４７】
前述の各実施の形態ではハンドル軸４を四角形断面形状で、軸取付用孔８，１３を四角形孔としたが、これに限ることはない。
例えば、ハンドル軸４を五角形断面形状、六角形断面形状などの角形断面形状又は円形断面形状とし、軸取付用孔８，１３を五角形孔、六角形孔などの角形孔又は円形孔としても良い。
【００４９】
【発明の効果】
請求項１に係る発明によれば、ハンドル軸４の取付部３０に取付けたガタ防止部材４０のガタ防止用の軸部の面および取付用の軸部の面が軸取付用孔８，１３の内面に圧接しているので、ハンドル軸４の軸取付用孔８，１３に対するがたつきを防止できる。
また、ガタ防止部材４０は硬質樹脂であるから、ハンドル軸４に連結したハンドル操作力でガタ防止部材４０が変位し難い。しかも、ガタ防止部材４０は耐久性に優れ早期に劣化しない。
これらが相俟って、ハンドル軸４の軸取付用孔８，１３に対するがたつきを長期間に亘って確実に防止できる。
【００５０】
また、ガタ防止部材４０は硬質樹脂で、その取付用の軸部がハンドル軸４の取付部３０の取付用の孔に、そのハンドル軸４の軸方向に動かないように嵌合して取付けてあるので、ハンドル軸４を軸取付用孔８，１３に挿入する際にガタ防止部材４０が軸方向に動くことがない。
よって、ハンドル軸４を軸取付用孔８，１３に容易に挿入して取付けできる。
また、ガタ防止部材４０を固着するための手段、例えばねじ、ピン、溶接などが不要で、製作コストが安い。
また、ガタ防止部材４０の取付用の軸部をハンドル軸４の取付用の孔に嵌合することでガタ防止部材４０をハンドル軸４に強固に取付け、その第１・第２面２０，２１と平行な断面における面積が取付用の孔の当該断面における面積よりも大きなガタ防止用の軸部の面を取付用孔８，１３の内面に接するので、ガタ防止部材４０の軸取付用孔８，１３の内面に接する面積を大きくできる。
よって、より安定したハンドル軸４のがたつき防止が可能であると共に、大径孔のみを形成する場合に比べてハンドル軸４の強度低下が低減する。
【００５１】
請求項２に係る発明によれば、ハンドル軸４の取付部３０に取付けたガタ防止部材４０の大径部４１の端面４１ａおよび小径部４２の端面４２ｃが軸取付用孔８，１３の内面に圧接しているので、ハンドル軸４の軸取付用孔８，１３に対するがたつきを防止できる。
また、ガタ防止部材４０は硬質樹脂であるから、ハンドル軸４に連結したハンドル操作力でガタ防止部材４０が変位し難い。しかも、ガタ防止部材４０は耐久性に優れ早期に劣化しない。
これらが相俟って、ハンドル軸４の軸取付用孔８，１３に対するがたつきを長期間に亘って確実に防止できる。
また、ガタ防止部材４０は硬質樹脂で、その小径部４２がハンドル軸４の取付部３０の小径部３２に、そのハンドル軸４の軸方向に動かないように嵌合して取付けてあるので、ハンドル軸４を軸取付用孔８，１３に挿入する際にガタ防止部材４０が軸方向に動くことがない。
よって、ハンドル軸４を軸取付用孔８，１３に容易に挿入して取付けできる。
また、ガタ防止部材４０を固着するための手段、例えばねじ、ピン、溶接などが不要で、製作コストが安い。
また、ガタ防止部材４０の小径部４２をハンドル軸４の小径孔３２に嵌合することでガタ防止部材４０をハンドル軸４に強固に取付け、ガタ防止部材４０の大径部４１をハンドル軸４の幅とほぼ同一として軸取付用孔８，１３の内面に接する面積を大きくできる。
よって、より安定したハンドル軸４のがたつき防止が可能であると共に、大径孔のみを形成する場合に比べてハンドル軸４の強度低下が低減する。
【００５２】
請求項３に係る発明によれば、ガタ防止部材４０の段差部４３を取付部３０の段差部３３に接することで、大径部４１の端面４１ａがハンドル軸４の第１面２０から突出すると共に、小径部４２の端面４２ｃがハンドル軸４の第２面２１から突出する。
よって、ガタ防止部材４０をハンドル軸４の取付部３０に、その段差部４３が段差部３３に接するまで嵌合することで正しく取付けでき、そのガタ防止部材４０のハンドル軸４への取付けが容易である。
【００５３】
請求項４に係る発明によれば、ガイド面をガイドとして大径部４１、小径部４２を軸取付用孔８，１３内にスムーズに挿入できる。
また、ガタ防止部材４０の全長、ハンドル軸４の第１面２０と第２面２１との面の寸法に若干の誤差があってもガイド面がハンドル軸４の第１面２０、第２面２１から全て突出することがなく、前述のように大径部４１、小径部４２を軸取付用孔８，１３内にスムーズに挿入できる。
【００５４】
請求項５に係る発明によれば、ハンドル軸４の取付部３０に取付けたガタ防止部材４０の少なくとも頭部４５の端面が軸取付用孔８，１３の内面に圧接しているので、ハンドル軸４の軸取付用孔８，１３に対するがたつきを防止できる。
また、ガタ防止部材４０は硬質樹脂であるから、ハンドル軸４に連結したハンドル操作力でガタ防止部材４０が変位し難い。しかも、ガタ防止部材４０は耐久性に優れ早期に劣化しない。
これらが相俟って、ハンドル軸４の軸取付用孔８，１３に対するがたつきを長期間に亘って確実に防止できる。
また、ガタ防止部材４０は硬質樹脂で、その軸状部４４がハンドル軸４の取付部３０の孔３５に、ハンドル軸４の軸方向に動かないように嵌合して取付けてあるので、ハンドル軸４を軸取付用孔８，１３に挿入する際にガタ防止部材４０が軸方向に動くことがない。
よって、ハンドル軸４を軸取付用孔８，１３に容易に挿入して取付けできる。
また、ガタ防止部材４０を固着するための手段、例えばねじ、ピン、溶接などが不要で、製作コストが安い。
【図面の簡単な説明】
【図１】錠装置の分解斜視図である。
【図２】ハンドル軸とガタ防止部材の分解斜視図である。
【図３】ハンドル軸にガタ防止部材を取付けた状態の断面図である。
【図４】図３のＡ−Ａ断面図である。
【図５】取付部の段差部とガタ防止部材の段差部との間に隙間を形成した断面図である。
【図６】ガタ防止部材の他の形状を示す斜視図である。
【図７】取付部とガタ防止部材をそれぞれ長手方向に亘って同一大きさとした参考例の断面図である。
【図８】ハンドル軸の角部に軸取付用孔を開口した実施の形態の分解斜視図である。
【図９】取付け状態の断面図である。
【図１０】ハンドル軸の角部に開口した取付部とガタ防止部材をそれぞれ長手方向に亘って同一大きさとした参考例を示す断面図である。
【図１１】ハンドル軸の一つの面に段付きの軸形状のガタ防止部材を取付けた参考例を示す断面図である。
【図１２】ガタ防止部材の他の形状を参考として示す斜視図である。
【図１３】ハンドル軸の一つの面に長手方向に亘って同一大きさのガタ防止部材を取付けた参考例の断面図である。
【図１４】ハンドル軸の一つの角部に段付きの軸形状のガタ防止部材を取付けた実施の形態を示す断面図である。
【符号の説明】
４…ハンドル軸、８…軸取付用孔、１３…軸取付用孔、２０…第１面、２１…第２面、２２…第３面、２３…第４面、２５…第１の角部、２６…第２の角部、２７…第３の角部、２８…第４の角部、３０…取付部、３１…大径孔、３２…小径孔、３３…段差部、３４…凹陥部、３５…孔、４０…ガタ防止部材、４１…大径部、４２…小径部、４３…段差部、４４…軸状部、４５…頭部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shaft shaft mounting hole for a lock operating member of a lock mounted on a door, and a handle shaft rattling prevention device for preventing the shaft shaft inserted and mounted in the shaft mounting hole of the handle. .
[0002]
[Prior art]
The handle shaft is mounted by inserting it into the shaft mounting hole of the lock lock actuating member of the lock, and the shaft mounting hole of the handle. By rotating the handle shaft with the handle, the lock actuating member rotates and the lock rod enters and exits Then it is locked and unlocked.
The handle shaft described above may rattle in the shaft mounting hole, and various devices for preventing the rattling have been proposed.
For example, a rattling prevention device disclosed in Japanese Patent Laid-Open No. 8-13859 has been proposed.
In this device, a leaf spring is attached to the handle shaft, and the leaf spring is pressed against the inner surface of the shaft attachment hole so that the handle shaft does not rattle against the shaft attachment hole.
[0003]
Further, a rattling prevention device disclosed in Japanese Patent Laid-Open No. 2000-120306 has been proposed.
This device forms a groove in the handle shaft, attaches an elastic member to the groove, and inserts the handle shaft into the shaft mounting hole, so that the elastic member presses one inner surface of the shaft mounting hole and repels it. By pressing the handle shaft against the other inner surface of the shaft mounting hole with force, the handle shaft is prevented from rattling against the shaft mounting hole.
[0004]
[Problems to be solved by the invention]
In the former handle shaft rattling prevention device, the leaf spring is in contact with the inner surface of the shaft mounting hole to prevent rattling, so the leaf spring is easily displaced by the rotational force of the handle shaft. In addition, the plate spring is unstable with respect to the rotational operation force, and since the leaf spring sags at an early stage, rattling of the handle shaft with respect to the shaft mounting hole cannot be reliably prevented over a long period of time.
Further, since the work of fixing the leaf spring to the handle shaft by screws, screws, welding or the like is necessary, the production cost is high.
[0005]
The latter handle shaft rattling prevention device uses an elastic member made of urethane or rubber, and when the handle shaft is inserted into the shaft mounting hole, the elastic member is greatly compressed and deformed, and its repulsive force is used. Since the rattling is prevented, the elastic member is easily deformed by the rotational operation force of the handle shaft and is unstable.
Therefore, as in the former device, rattling of the handle shaft with respect to the shaft mounting hole cannot be reliably prevented.
In addition, since the elastic member is attached to the groove continuous in the axial direction of the handle shaft, the elastic member may move in the axial direction when the handle shaft is inserted into the shaft mounting hole. It is difficult to insert it into the box.
[0006]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a handle shaft rattling prevention device that satisfies the following.
First, it is possible to reliably prevent rattling of the handle shaft with respect to the shaft mounting hole over a long period of time.
Second, production costs are low.
Third, it is easy to insert the handle shaft into the shaft mounting hole.
[0007]
[Means for Solving the Problems]
  According to the first aspect of the present invention, when the handle shaft 4 inserted into the shaft mounting holes 8 and 13 rattles against the shaft mounting holes 8 and 13, the backlash preventing member 40 mounted to the mounting portion 30 of the handle shaft 4 is provided. , A handle shaft rattling prevention device for preventing by pressing the inner surface of the mounting holes 8, 13;
  The mounting portion 30 is formed so as to be orthogonal to the axial direction of the handle shaft 4.And opened on the second surface 21 of the handle shaft 4.Mounting holes,The area in the cross section parallel to the first surface 20 and the second surface 21 that opens to the first surface 20 opposite to the second surface 21 of the handle shaft 4 is larger than the area in the cross section of the mounting hole.A stepped shape with the recess,
  The mounting hole is a round hole opened only in the second surface 21 and the recess,
  The backlash preventing member 40 is made of a hard resin, and more than a mounting shaft portion that fits into the mounting hole, and the mounting shaft portion.In the cross sectionA stepped shaft shape with a shaft portion for preventing looseness that fits in the recess with a large area,
  The backlash prevention member 40 is fitted to the mounting portion 30 so that the mounting shaft portion does not move in the mounting hole so as to move in the axial direction of the handle shaft 4.And the surface of the mounting shaft portion protrudes from the second surface 21 of the handle shaft 4,A shaft portion for preventing backlash fits into the recess,ConcernedThe surface of the shaft portion for preventing play is the handle shaft 4First side 20Mounting protruding from the
  Shaft surface for preventing playAnd the surface of the mounting shaftIs an apparatus for preventing rattling of the handle shaft, wherein the handle shaft is mounted in pressure contact with the inner surfaces of the mounting holes 8 and 13.
[0008]
  According to a second invention, in the first invention, the handle shaft 4First side 20The large-diameter hole 31 opened to the concave portion is used as a recess, and the large-diameter hole 31 and the stepped portion 33 are connected continuously.And opened on the second surface 21 of the handle shaft 4.The small diameter hole 32 is used as a mounting hole, and the mounting portion 30 is formed as a stepped hole.
  Small diameterHoleA small-diameter portion 42 fitted so as not to move in the axial direction of the handle shaft 4 is used as a mounting shaft portion, and a large-diameter portion 41 continuous through the small-diameter portion 42 and the stepped portion 43 serves as a shaft for preventing play. And the rattle prevention member 40 has a stepped shaft shape,
  The backlash prevention member 40 is fitted to the mounting portion 30 so that the small diameter portion 42 does not move in the small diameter hole 32 in the axial direction of the handle shaft 4.In addition, the end surface 42c protrudes from the second surface 21 of the handle shaft 4.The large-diameter portion 41 fits into the large-diameter hole 31 and the end surface 41 a of the large-diameter portion 41 is formed on the handle shaft 4.First side 20The end surface 41a of the large diameter portion 41And the end face 42c of the small diameter portion 42Of the mounting holes 8, 13TwoOn the insideRespectivelyThis is a device for preventing rattling of the handle shaft in pressure contact.
[0009]
  According to a third invention, in the second invention,Anti-rattle member 40Is larger than the dimension between the first surface 20 and the second surface 21 of the handle shaft 4 and the large-diameter portion with the stepped portion 43 of the backlash preventing member 40 in contact with the stepped portion 33 of the mounting portion 30. The end surface 41a of 41 protrudes from the first surface 20 and the end surface 42c of the small diameter portion 42 protrudes from the second surface 21, and the end surface 41a of the large diameter portion 41 and the end surface of the small diameter portion 4242cIs a rattling prevention device for the handle shaft that is in pressure contact with the two inner surfaces of the shaft mounting holes 8 and 13, respectively.
[0010]
  The fourth invention is:ThirdIn the present invention, the large diameter portion 41 and the small diameter portion 42 are provided.When the handle shaft 4 is inserted into the shaft mounting holes 8 and 13,Having a guide surface for the insertion guide,
  The axial length of the rattle prevention member 40 at the portion where the guide surface is formed is more than half of the difference between the overall length of the rattle prevention member 40 and the first surface 20 and the second surface 21 of the handle shaft 4. longIt is a device for preventing rattling of the handle shaft.
[0011]
  The fifth invention is:When the handle shaft 4 inserted into the shaft mounting holes 8 and 13 rattles against the shaft mounting holes 8 and 13, the backlash preventing member 40 mounted on the mounting portion 30 of the handle shaft 4 is connected to the mounting hole 8. , 13 is a device for preventing rattling of the handle shaft that is prevented by being pressed against the inner surface of the handle,
  The mounting portion 30 isA recessed portion 34 formed so as to be orthogonal to the axial direction of the handle shaft 4 and toward two opposite corner portions.When,With a hole 35 opened in the bottom surface 34a of the recessed portion 34With stepped shape,
  The backlash prevention member 40 is made of a hard resin and has a shaft-like portion 44 fitted into the hole 35 and a stepped shaft shape with a head 45 provided at one end of the shaft-like portion 44.
  The backlash prevention member 40 is attached to the mounting portion 30.A shaft portion 44 is formed in the hole 35.Fit so that it does not move in the axial direction of the handle shaft 4,When the head 45 is fitted into the recessed portion 34both,An end surface of the head 45 is attached to protrude from two adjacent surfaces forming one of the two corners,
  The end surface of the head 45 is in pressure contact with the inner surfaces of the shaft mounting holes 8 and 13.It is characterized byIt is a device for preventing rattling of the handle shaft.
[0012]
[Action]
  According to the first invention, the surface of the shaft portion for preventing the backlash of the backlash preventing member 40 attached to the mounting portion 30 of the handle shaft 4.And the surface of the mounting shaftIs in pressure contact with the inner surfaces of the shaft mounting holes 8 and 13, so that rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 can be prevented.
  Further, since the backlash preventing member 40 is made of hard resin, it is difficult for the backlash preventing member 40 to be displaced by the handle operating force connected to the handle shaft 4. Moreover, the backlash preventing member 40 has excellent durability and does not deteriorate early.
  Together, these can reliably prevent rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 over a long period of time.
[0013]
  Further, the backlash prevention member 40 is made of hard resin, and the shaft portion for attachment is fitted and attached to the attachment hole of the attachment portion 30 of the handle shaft 4 so as not to move in the axial direction of the handle shaft 4. Therefore, when the handle shaft 4 is inserted into the shaft mounting holes 8 and 13, the backlash preventing member 40 does not move in the axial direction.
  Therefore, the handle shaft 4 can be easily inserted and attached to the shaft mounting holes 8 and 13.
  Further, means for fixing the backlash preventing member 40, for example, screws, pins, welding, and the like are unnecessary, and the manufacturing cost is low.
  Further, by fitting the shaft portion for mounting the backlash preventing member 40 into the mounting hole for the handle shaft 4, the backlash preventing member 40 is firmly attached to the handle shaft 4,The area in the cross section parallel to the first and second surfaces 20 and 21 is in the cross section of the mounting hole.areathanSince the surface of the shaft portion for preventing large play comes into contact with the inner surfaces of the mounting holes 8 and 13, the area in contact with the inner surfaces of the shaft mounting holes 8 and 13 of the play preventing member 40 can be increased.
  Therefore, it is possible to prevent rattling of the handle shaft 4 more stably, and reduce the strength reduction of the handle shaft 4 as compared with the case where only the large-diameter hole is formed.
[0014]
  According to the second invention, the end surface 41a of the large-diameter portion 41 of the backlash prevention member 40 attached to the attachment portion 30 of the handle shaft 4 is provided.And the end face 42c of the small diameter portion 42Is in pressure contact with the inner surfaces of the shaft mounting holes 8 and 13, so that rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 can be prevented.
  Further, since the backlash preventing member 40 is made of hard resin, it is difficult for the backlash preventing member 40 to be displaced by the handle operating force connected to the handle shaft 4. Moreover, the backlash preventing member 40 has excellent durability and does not deteriorate early.
  Together, these can reliably prevent rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 over a long period of time.
  Further, the backlash prevention member 40 is made of hard resin, and its small diameter portion 42 is fitted and attached to the small diameter portion 32 of the attachment portion 30 of the handle shaft 4 so as not to move in the axial direction of the handle shaft 4. When the handle shaft 4 is inserted into the shaft mounting holes 8 and 13, the backlash preventing member 40 does not move in the axial direction.
  Therefore, the handle shaft 4 can be easily inserted and attached to the shaft mounting holes 8 and 13.
  Further, means for fixing the backlash preventing member 40, for example, screws, pins, welding, and the like are unnecessary, and the manufacturing cost is low.
  Further, the backlash preventing member 40 is firmly attached to the handle shaft 4 by fitting the small diameter portion 42 of the backlash preventing member 40 into the small diameter hole 32 of the handle shaft 4, and the large diameter portion 41 of the backlash preventing member 40 is attached to the handle shaft 4. The area in contact with the inner surfaces of the shaft mounting holes 8 and 13 can be made substantially the same.
  Therefore, it is possible to prevent rattling of the handle shaft 4 more stably, and the strength reduction of the handle shaft 4 is reduced as compared with the case where only the large-diameter hole is formed.
[0015]
  According to the third invention,Anti-rattle member 40The end surface 41 a of the large-diameter portion 41 protrudes from the first surface 20 of the handle shaft 4 and the end surface 42 c of the small-diameter portion 42 extends from the first surface 20 of the handle shaft 4. Projects from the two surfaces 21.
  Therefore, the rattle prevention member 40 can be correctly attached by fitting it to the attachment portion 30 of the handle shaft 4 until the step portion 43 contacts the step portion 33, and the attachment of the rattle prevention member 40 to the handle shaft 4 is easy. It is.
[0016]
  According to the fourth invention,The large diameter portion 41 and the small diameter portion 42 can be smoothly inserted into the shaft mounting holes 8 and 13 using the guide surface as a guide.
  Further, even if there is a slight error in the overall length of the backlash prevention member 40 and the dimensions of the first surface 20 and the second surface 21 of the handle shaft 4, the guide surfaces are the first surface 20 and the second surface of the handle shaft 4. The large-diameter portion 41 and the small-diameter portion 42 can be smoothly inserted into the shaft mounting holes 8 and 13 as described above.
[0017]
  According to the fifth aspect of the invention, at least the end face of the head portion 45 of the backlash prevention member 40 attached to the attachment portion 30 of the handle shaft 4 is in pressure contact with the inner surfaces of the shaft attachment holes 8 and 13. Shaking with respect to the shaft mounting holes 8 and 13 can be prevented.
  Further, since the backlash preventing member 40 is made of hard resin, it is difficult for the backlash preventing member 40 to be displaced by the handle operating force connected to the handle shaft 4. Moreover, the backlash preventing member 40 has excellent durability and does not deteriorate early.
  Together, these can reliably prevent rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 over a long period of time.
  Further, the backlash prevention member 40 is made of hard resin, and its shaft-like portion 44 is fitted and attached to the hole 35 of the attachment portion 30 of the handle shaft 4 so as not to move in the axial direction of the handle shaft 4. When the shaft 4 is inserted into the shaft mounting holes 8 and 13, the backlash preventing member 40 does not move in the axial direction.
  Therefore, the handle shaft 4 can be easily inserted and attached to the shaft mounting holes 8 and 13.
  Further, means for fixing the backlash preventing member 40, for example, screws, pins, welding, and the like are unnecessary, and the manufacturing cost is low.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
An example of the locking device will be described with reference to FIG.
The lock 1, one handle 2, the other handle 3, and the handle shaft 4 constitute a lock device.
In the lock 1, a lock rod 6 and a lock lever operating member, for example, a hub 7 are attached to the lock case 5, and the lock rod 6 moves in and out of the lock case 5 by rotating the hub 7. The hub 7 has a shaft mounting hole 8.
The lock case 5 is mounted in the recessed portion 10 of the door 9. The door 9 has a hole 11 facing the hub 7.
[0020]
The one handle 2 is a lever handle having a protruding portion 2a and a grip portion 2b, and is inserted into the hole 12 of the protruding portion 2a so that one end of the handle shaft 4 in the axial direction does not rotate. To prevent it from coming off.
The other handle 3 is a lever handle having a projection 3a and a grip 3b, and has a shaft mounting hole 13 in the projection 3a.
For example, a stepped hole 14 having a large diameter hole and a small diameter hole is formed in the protrusion 3a.
A stopper 15 and a cylindrical body 16 are inserted into the hole 14 and are prevented from being detached by a retaining means, for example, a pin 3c. The stopper 15 has a circular plate shape and is formed with a handle shaft insertion hole 17. The handle shaft insertion hole 17 is rectangular and has a pair of opening edges and a locking piece 18 provided integrally therewith. .
A shaft mounting hole 13 is formed in the cylindrical body 16.
The reason for this is that, as will be described later, the other axial end of the handle shaft 4 is detachably attached to the other handle 3 so as not to come out, and the shaft mounting hole 13 is provided in the protrusion 3a. It may be formed.
[0021]
The handle shaft 4 has a quadrangular cross-sectional shape, and has a first surface 20 and a second surface 21 that face each other, and a third surface 22 and a fourth surface 23 that face each other.
The shaft mounting hole 8, the hole 12, and the shaft mounting hole 13 are rectangular holes. The shaft mounting hole 8 and the shaft mounting hole 13 are slightly larger than the handle shaft 4, and the handle shaft 4 has a gap in each shaft mounting hole 8 and 13 and is inserted so as not to rotate.
Locking grooves 24 are formed on the third surface 22 and the fourth surface 23 of the handle shaft 4 near the other axial ends.
A pair of attachment portions 30 are formed on the handle shaft 4 at intervals in the axial direction. A backlash prevention member 40 is attached to each attachment portion 30.
[0022]
The handle shaft 4 is inserted from one side of the door 9 through the hole 11 of the door 9 and the shaft mounting hole 8 of the hub 7 of the lock 1, and the other end projects from the other side of the door 9. The other end portion of the handle shaft 4 is inserted into the shaft mounting hole 13 of the cylindrical body 16, and further inserted into the handle shaft insertion hole 17 of the stopper 15 and inserted into the small-diameter hole of the hole 14, whereby the other end of the handle shaft 4 is inserted into the handle shaft 4. The handle 3 is connected.
Since the locking groove 24 of the handle shaft 4 engages with the locking piece 18 of the stopper 15, the handle shaft 4 is prevented from coming off.
Also, one backlash preventing member 40 is in pressure contact with the inner surface of the shaft mounting hole 8 of the hub 7, the other backlash preventing member 40 is in pressure contact with the inner surface of the shaft mounting hole 13 in the cylinder 16, and the handle shaft 4 is Shaking with respect to the mounting holes 8 and 13 is prevented.
[0023]
Next, specific shapes of the attachment portion 30 of the handle shaft 4 and the backlash preventing member 40 will be described with reference to FIGS.
The attachment portion 30 is a round hole penetrating the first surface 20 and the second surface 21 of the handle shaft 4. The hole is a large-diameter hole 31 opened in the first surface 20 and a small-diameter hole opened in the second surface 21. 32 is a stepped hole having a stepped portion 33.
Diameter D of the large diameter hole 31₁Is substantially the same as the width H of the first surface 20, and the length a of the large-diameter hole 31 (the dimension from the first surface 20 to the stepped portion 33) is the dimension between the first surface 20 and the second surface 21. Smaller than b. For example, about 1/8. The length a of the large diameter hole 31 is smaller than the length (b−a) of the small diameter hole 32.
The handle shaft 4 is made of metal.
[0024]
The backlash prevention member 40 has a circular section with a stepped portion 43 having a large diameter portion 41 and a small diameter portion 42 and a stepped shaft shape.
The total length c of the rattle prevention member 40 is equal to or greater than the dimension (hole size) between the opposed inner surfaces of the shaft mounting holes 8 and 13, and both end surfaces thereof are opposed inner surfaces of the shaft mounting holes 8 and 13. Press contact.
The total length c of the rattle prevention member 40 is longer than the dimension b of the handle shaft 4 (the total length of the stepped hole).
Diameter d of the large diameter portion 41₁Is the diameter D of the large-diameter hole 31₁The length (the dimension between the end surface 41 a and the stepped portion 43) d of the large-diameter portion 41 is smaller than the length a of the large-diameter hole 31. The difference (da) between the length d of the large-diameter portion 41 and the length a of the large-diameter hole 31 is approximately half of the difference (c-b) between the total length c of the backlash prevention member 40 and the dimension b. is there.
The peripheral edge of the large-diameter portion 41 on the end surface 41a side is chamfered to form a guide surface for insertion guide, for example, a tapered surface 41b. The guide surface may be an inclined surface or an arc surface (R surface).
[0025]
Diameter d of the small diameter portion 42₂Is the diameter D of the small-diameter hole 32₂The small-diameter portion 42 is fitted in the small-diameter hole 32.
[0026]
For example, as shown in FIG. 4, the small-diameter portion 42 has a shaft-shaped portion 42a and a plurality of protruding portions 42b provided integrally on the outer peripheral surface thereof, and a virtual circle formed by connecting the plurality of protruding portions 42b has a diameter d.₂It is.
By forming the small-diameter portion 42 in the above-described shape, the plurality of protruding portions 42b of the small-diameter portion 42 and the inner surface of the small-diameter hole 32 come into contact with each other, and thus the small-diameter portion 42 is firmly attached in the axial direction of the handle shaft 4 In addition, the contact area is small, and the small diameter portion 42 can be press-fitted into the small diameter hole 32 with a small force.
[0027]
The peripheral portion of the small diameter portion 42 on the end surface 42c side is chamfered to form a guide surface for insertion guide, for example, a tapered surface 42d. The guide surface may be an inclined surface or an arc surface (R surface).
The length e of the tapered surface 42d and the portion of the large diameter portion 41 where the tapered surface 41b is formed is half the difference (c−b) between the overall length c of the backlash preventing member 40 and the dimension b of the handle shaft 4. That is, it is longer than the projecting dimensions of the large-diameter portion 41 and the small-diameter portion 42 from the first surface 20 and the second surface 21 of the handle shaft 4.
Thus, when the backlash preventing member 40 is press-fitted into the stepped hole (attachment portion 30) of the handle shaft 4 and the stepped portion 43 and the stepped portion 33 are brought into contact as shown in FIG. The end surface 41 a protrudes from the first surface 20 of the handle shaft 4, and the end surface 42 c of the small diameter portion 42 protrudes from the second surface 21 of the handle shaft 4.
The first surface 20 of the handle shaft 4 faces the tapered surface 41b, and the second surface 21 faces the tapered surface 42d.
In addition, since the length e of the tapered surfaces 41b and 42d is longer than the projecting dimension of the large diameter portion 41 and the small diameter portion 42 from the first surface 20 and the second surface 21, the length of the stepped hole, Even if there is a slight dimensional error in the total length c of the prevention member 40 and the dimension b of the handle shaft 4, all of the tapered surfaces 41 b and 42 d do not protrude from the first surface 20 and the second surface 21. That is, the surfaces of the large diameter portion 41 and the small diameter portion 42 that are perpendicular to the handle shaft 4 do not protrude from the first surface 20 and the second surface 21.
[0028]
The rattle prevention member 40 is tested under a certain condition, and has a tensile elastic modulus or bending elastic modulus of 100,000 psi (7,000 kgf / cm²) Above (ISOR291) hard resin, for example, polyacetal resin, polyamide 6 resin, polyamide 66 resin, acrylonitrile / butadiene / styrene resin, acrylic resin, acrylonitrile / ethylene propylene rubber / styrene resin, acrylic / acrylonitrile / styrene resin, polypropylene resin Polyethylene resin, polycarbonate resin, polyethylene terephthalate resin, polystyrene resin and the like.
[0029]
Next, attachment of the handle shaft 4 will be described.
The backlash preventing member 40 is attached to the stepped hole (attachment portion 30) of the handle shaft 4 as described above.
By inserting the handle shaft 4 into the shaft mounting holes 8 and 13, the backlash preventing member 40 is slightly compressed using the tapered surface 41 b of the large diameter portion 41 and the tapered surface 42 d of the small diameter portion 42 as guides. , 13.
[0030]
As a result, the end surface 41 a of the large-diameter portion 41 and the end surface 42 c of the small-diameter portion 42 are strongly pressed against the opposed inner surfaces of the shaft mounting holes 8, 13, so that the handle shaft 4 rattles against the shaft mounting holes 8, 13. It is prevented.
Further, since the stepped hole having the large diameter hole 31 and the small diameter hole 32 is formed in the handle shaft 4 and the backlash preventing member 40 has the stepped shaft shape having the large diameter part 41 and the small diameter part 42, The large-diameter portion 41 of the prevention member 40 can be made substantially the same as the width H of the handle shaft 4 to increase the area in contact with the shaft mounting holes 8 and 13.
Moreover, the backlash preventing member 40 is positioned by contacting the stepped portion 33 and the stepped portion 43, and the amount of protrusion of the backlash preventing member 40 from the first surface 20 and the second surface 21 of the handle shaft 4 is set easily and correctly. Can be a value.
[0031]
As shown in FIG. 5, the length “a” of the large-diameter hole 31 may be increased so that a gap is formed between the stepped portion 33 and the stepped portion 43 of the play preventing member 40.
[0032]
The aforementioned backlash preventing member 40 may have a large-diameter portion 41 having a substantially oval shape as shown in FIG. 6 (a) and a rectangular shape as shown in FIG. 6 (b).
Further, a plurality of small diameter portions 42 may be provided as shown in FIG. In this shape, a plurality of small-diameter holes 32 are formed in the bottom surface of the large-diameter hole 31 formed in the handle shaft 4 (stepped portion 33) so as to form the attachment portion 30.
[0033]
In this way, the large-diameter portion 41 has a large area and a large area in contact with the inner surfaces of the shaft mounting holes 8 and 13, so that the handle shaft 4 is further free from rattling with respect to the shaft mounting holes 8 and 13. It can be surely prevented.
[0034]
  As a reference exampleAs shown in FIG. 7, the mounting portion 30 is a circular hole having the same diameter from the first surface 20 to the second surface 21 of the handle shaft 4, and the backlash preventing member 40 is a shaft having the same diameter and a circular section in the longitudinal direction. It is good also as a shape.
[0035]
Although not shown, the mounting portion 30 is a quadrangular hole, a triangular hole, a conical hole, a quadrangular pyramid hole, a triangular shape penetrating from the first surface 20 to the second surface 21 of the handle shaft 4. It may be a cone-shaped hole.
In this case, the backlash preventing member 40 has a square cross-sectional shape, a triangular cross-sectional shape, a conical shape, a quadrangular pyramid shape, and a triangular pyramid shape.
[0036]
As shown in FIG. 8 and FIG. 9, the mounting shaft 30 is formed by penetrating holes in two opposite corners of the handle shaft 4, and the backlash preventing member 40 is adjacent to the corners as two boundaries. It is good also as a shaft shape which protrudes from.
For example, the recessed part 34 formed in the 1st corner | angular part 25 of the 1st surface 20 and the 3rd surface 22 of the handle shaft 4, the 2nd corner | angular part 26 of the 2nd surface 21 and the 4th surface 23, and the said recessed part A stepped hole having a hole 35 penetrating through the bottom surface 34 a of 34 is defined as the attachment portion 30.
The backlash prevention member 40 has a shape in which a head 45 is integrally provided at one end of the shaft-shaped portion 44, and the shaft-shaped portion 44 fits into the hole 35 and the head 45 fits into the recessed portion 34. Like that.
The head 45 is positioned by contacting the bottom surface 34 a of the recessed portion 34.
[0037]
The other end surface 44 a of the shaft-shaped portion 44 has a mountain shape with the same angle as the second corner portion 26 and protrudes from the second surface 21 and the fourth surface 23 of the handle shaft 4. Two corners near the other end surface 44a of the shaft-like portion 44 are chamfered to form a slope 44b and have the above-described guide surface. An arc surface may be used.
An end surface 45 a of the head 45 has a mountain shape with the same angle as the first corner portion 25, and protrudes from the first surface 20 and the third surface 22 of the handle shaft 4. Two corners near the end face 45a of the head 45 are chamfered to form a slope 45b, which has the above-described guide surface. An arc surface may be used.
[0038]
  As a reference example,As shown in FIG. 10, the first corner 25 and the second corner 26 of the handle shaft 4 are formed by penetrating holes of the same size in the longitudinal direction, thereby forming the mounting portion 30 and preventing backlash. The member 40 may have a shaft shape having the same size in the longitudinal direction and a shape having a chevron-shaped other end surface 44a and a chevron-shaped end surface 45a.
[0039]
  As shown in FIG.In the embodiment, the backlash preventing member 40 has a rectangular cross section, but may have a circular cross section, a triangular cross section, or the like.
  In addition, FIG.5 and 9Although the backlash prevention member 40 is one, the backlash prevention member 40 may be attached to the handle shaft 4 while being separated from each other in the axial direction and 90 degrees out of phase.
[0040]
  As a reference example,As shown in FIG. 11, a step having a step portion 33 with a large diameter hole 31 opened in the first surface 20 of the handle shaft 4 and a small diameter hole 32 continuous with the large diameter hole 31 and not opened in the second surface 21. The attached hole is referred to as an attachment portion 30.
  The backlash preventing member 40 has a stepped shaft shape having a step portion 43 with a large diameter portion 41 and a small diameter portion 42. The large diameter portion 41 is fitted into the large diameter hole 31, the small diameter portion 42 is fitted into the small diameter hole 32, and the step portion 43 is in contact with the step portion 33. The small diameter portion 42 is slightly shorter than the small diameter hole 32. The length e of the portion where the tapered surface 41b is formed is longer than the difference (da) between the length a of the large diameter hole 31 and the length d of the large diameter portion 41.
[0041]
In this case, the large-diameter portion 41 may have a substantially oval shape as shown in FIG. 12A and a rectangular shape as shown in FIG.
Further, a plurality of small diameter portions 42 may be provided as shown in FIG. In this shape, a plurality of small-diameter holes 32 are formed on the bottom surface (step 33) of the large-diameter hole 31 formed in the handle shaft 4 to form the attachment portion 30.
[0042]
  As a reference example,As shown in FIG. 13, a hole having the same diameter is formed in the first surface 20 of the handle shaft 4 so as not to be opened in the second surface 21 along the longitudinal direction.
  The backlash preventing member 40 has a shaft shape with the same diameter in the longitudinal direction.
[0043]
  Reference examples shown in FIGS. 11 and 13In this case, the attachment portion 30 (a stepped hole or hole) may be formed on a surface other than the first surface 20.
  Further, the mounting portion 30 may be formed on each of the two surfaces, the three surfaces, and the four surfaces, and the backlash preventing member 40 may be mounted on each of the two surfaces, the three surfaces, and the four surfaces.
[0044]
  The aboveAs shown in FIG.In the embodiment, the mounting portion 30 is formed by a stepped hole or hole penetrating the two opposite corners of the handle shaft 4, but the step is opened at one corner and not opened at the other corner. It is good also as the attachment part 30 with a hole of a shape and a hole.
  For example, as shown in FIG. 14, a recess 34 that opens to the first corner 25 of the handle shaft 4 and a hole 35 that opens to the bottom surface 34 a of the recess 34 and does not open to the second corner 26. A stepped hole having a stepped portion (bottom surface 34a) is used.
  The backlash preventing member 40 has a shaft-like portion 44 that fits into the hole 35 and a head portion 45 that fits into the recessed portion 34. The end surface 45 a of the head 45 is formed in a mountain shape so as to protrude from the first surface 20 and the third surface 22 of the handle shaft 4.
  The shaft attachment portion 44 is shorter than the hole 35.
[0046]
  As shown in FIG.In the case of the embodiment, the attachment portion 30 (stepped hole, hole) is formed by the second corner portion 26, the third corner portion 27 of the first surface 20 and the fourth surface 23, and the second surface 21. And the third surface 22 may be formed at any one of the fourth corners 28, and the backlash prevention member 40 may be attached to each attachment part 30.
  In addition, the first corner 25, the second corner 26, the third corner 27, the fourth corner 28, any two corners or three corners, or mounting portions on all corners. 30 may be formed, and a plurality of rattle prevention members 40 may be attached.
[0047]
In each of the above-described embodiments, the handle shaft 4 has a square cross-sectional shape and the shaft mounting holes 8 and 13 have a square hole. However, the present invention is not limited to this.
For example, the handle shaft 4 may have a square cross-sectional shape such as a pentagonal cross-sectional shape or a hexagonal cross-sectional shape or a circular cross-sectional shape, and the shaft mounting holes 8 and 13 may be square holes such as pentagonal holes or hexagonal holes or circular holes.
[0049]
【The invention's effect】
  According to the first aspect of the present invention, the surface of the shaft portion for preventing backlash of the backlash preventing member 40 attached to the mounting portion 30 of the handle shaft 4.And the surface of the mounting shaftIs in pressure contact with the inner surfaces of the shaft mounting holes 8 and 13, so that rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 can be prevented.
  Further, since the backlash preventing member 40 is made of hard resin, it is difficult for the backlash preventing member 40 to be displaced by the handle operating force connected to the handle shaft 4. Moreover, the backlash preventing member 40 has excellent durability and does not deteriorate early.
  Together, these can reliably prevent rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 over a long period of time.
[0050]
  Further, the backlash prevention member 40 is made of hard resin, and the shaft portion for attachment is fitted and attached to the attachment hole of the attachment portion 30 of the handle shaft 4 so as not to move in the axial direction of the handle shaft 4. Therefore, when the handle shaft 4 is inserted into the shaft mounting holes 8 and 13, the backlash preventing member 40 does not move in the axial direction.
  Therefore, the handle shaft 4 can be easily inserted and attached to the shaft mounting holes 8 and 13.
  Further, means for fixing the backlash preventing member 40, for example, screws, pins, welding, and the like are unnecessary, and the manufacturing cost is low.
  Further, by fitting the shaft portion for mounting the backlash preventing member 40 into the mounting hole for the handle shaft 4, the backlash preventing member 40 is firmly attached to the handle shaft 4,The area in the cross section parallel to the first and second surfaces 20 and 21 is in the cross section of the mounting hole.areathanSince the surface of the shaft portion for preventing large play comes into contact with the inner surfaces of the mounting holes 8 and 13, the area in contact with the inner surfaces of the shaft mounting holes 8 and 13 of the play preventing member 40 can be increased.
  Therefore, it is possible to prevent rattling of the handle shaft 4 more stably, and the strength reduction of the handle shaft 4 is reduced as compared with the case where only the large-diameter hole is formed.
[0051]
  According to the second aspect of the invention, the end face 41 a of the large-diameter portion 41 of the backlash prevention member 40 attached to the attachment portion 30 of the handle shaft 4.And the end face 42c of the small diameter portion 42Is in pressure contact with the inner surfaces of the shaft mounting holes 8 and 13, so that rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 can be prevented.
  Further, since the backlash preventing member 40 is made of hard resin, it is difficult for the backlash preventing member 40 to be displaced by the handle operating force connected to the handle shaft 4. Moreover, the backlash preventing member 40 has excellent durability and does not deteriorate early.
  Together, these can reliably prevent rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 over a long period of time.
  Further, the backlash prevention member 40 is made of hard resin, and its small diameter portion 42 is fitted and attached to the small diameter portion 32 of the attachment portion 30 of the handle shaft 4 so as not to move in the axial direction of the handle shaft 4. When the handle shaft 4 is inserted into the shaft mounting holes 8 and 13, the backlash preventing member 40 does not move in the axial direction.
  Therefore, the handle shaft 4 can be easily inserted and attached to the shaft mounting holes 8 and 13.
  Further, means for fixing the backlash preventing member 40, for example, screws, pins, welding, and the like are unnecessary, and the manufacturing cost is low.
  Further, the backlash preventing member 40 is firmly attached to the handle shaft 4 by fitting the small diameter portion 42 of the backlash preventing member 40 into the small diameter hole 32 of the handle shaft 4, and the large diameter portion 41 of the backlash preventing member 40 is attached to the handle shaft 4. The area in contact with the inner surfaces of the shaft mounting holes 8 and 13 can be made substantially the same.
  Therefore, it is possible to prevent rattling of the handle shaft 4 more stably, and the strength reduction of the handle shaft 4 is reduced as compared with the case where only the large-diameter hole is formed.
[0052]
  According to the invention of claim 3,Anti-rattle member 40The end surface 41 a of the large-diameter portion 41 protrudes from the first surface 20 of the handle shaft 4 and the end surface 42 c of the small-diameter portion 42 extends from the first surface 20 of the handle shaft 4. Projects from the two surfaces 21.
  Therefore, the rattle prevention member 40 can be correctly attached by fitting it to the attachment portion 30 of the handle shaft 4 until the step portion 43 contacts the step portion 33, and the attachment of the rattle prevention member 40 to the handle shaft 4 is easy. It is.
[0053]
  According to the invention of claim 4,The large diameter portion 41 and the small diameter portion 42 can be smoothly inserted into the shaft mounting holes 8 and 13 using the guide surface as a guide.
  Further, even if there is a slight error in the overall length of the backlash prevention member 40 and the dimensions of the first surface 20 and the second surface 21 of the handle shaft 4, the guide surfaces are the first surface 20 and the second surface of the handle shaft 4. The large-diameter portion 41 and the small-diameter portion 42 can be smoothly inserted into the shaft mounting holes 8 and 13 as described above.
[0054]
  According to the fifth aspect of the present invention, since at least the end face of the head portion 45 of the backlash preventing member 40 attached to the attachment portion 30 of the handle shaft 4 is in pressure contact with the inner surfaces of the shaft attachment holes 8 and 13, the handle shaft 4 can be prevented from rattling against the shaft mounting holes 8 and 13.
  Further, since the backlash preventing member 40 is made of hard resin, it is difficult for the backlash preventing member 40 to be displaced by the handle operating force connected to the handle shaft 4. Moreover, the backlash preventing member 40 has excellent durability and does not deteriorate early.
  Together, these can reliably prevent rattling of the handle shaft 4 with respect to the shaft mounting holes 8 and 13 over a long period of time.
  Further, the backlash prevention member 40 is made of hard resin, and its shaft-like portion 44 is fitted and attached to the hole 35 of the attachment portion 30 of the handle shaft 4 so as not to move in the axial direction of the handle shaft 4. When the shaft 4 is inserted into the shaft mounting holes 8 and 13, the backlash preventing member 40 does not move in the axial direction.
  Therefore, the handle shaft 4 can be easily inserted and attached to the shaft mounting holes 8 and 13.
  Further, means for fixing the backlash preventing member 40, for example, screws, pins, welding, and the like are unnecessary, and the manufacturing cost is low.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a locking device.
FIG. 2 is an exploded perspective view of a handle shaft and a rattle prevention member.
FIG. 3 is a cross-sectional view of a state in which a backlash preventing member is attached to a handle shaft.
4 is a cross-sectional view taken along the line AA in FIG.
FIG. 5 is a cross-sectional view in which a gap is formed between the stepped portion of the mounting portion and the stepped portion of the backlash preventing member.
FIG. 6 is a perspective view showing another shape of the anti-rattle member.
FIG. 7 is a cross-sectional view of a reference example in which a mounting portion and a backlash preventing member have the same size in the longitudinal direction.
FIG. 8 is an exploded perspective view of an embodiment in which a shaft mounting hole is opened at a corner of the handle shaft.
FIG. 9 is a cross-sectional view of the attached state.
FIG. 10 is a cross-sectional view showing a reference example in which a mounting portion opened at a corner portion of a handle shaft and a backlash preventing member have the same size in the longitudinal direction.
FIG. 11 shows a stepped shaft-shaped rattle prevention member attached to one surface of the handle shaft.Reference exampleFIG.
FIG. 12 shows another shape of the rattle prevention member.As referenceIt is a perspective view shown.
FIG. 13 is a cross-sectional view of a reference example in which a backlash preventing member having the same size is attached to one surface of the handle shaft in the longitudinal direction.
FIG. 14 is a cross-sectional view showing an embodiment in which a stepped shaft-shaped backlash preventing member is attached to one corner of the handle shaft.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 4 ... Handle shaft, 8 ... Shaft mounting hole, 13 ... Shaft mounting hole, 20 ... 1st surface, 21 ... 2nd surface, 22 ... 3rd surface, 23 ... 4th surface, 25 ... 1st corner | angular part , 26 ... second corner, 27 ... third corner, 28 ... fourth corner, 30 ... mounting portion, 31 ... large-diameter hole, 32 ... small-diameter hole, 33 ... stepped portion, 34 ... recessed portion , 35 ... hole, 40 ... rattle prevention member, 41 ... large diameter portion, 42 ... small diameter portion, 43 ... stepped portion, 44 ... axial portion, 45 ... head.

Claims

軸取付用孔８，１３に挿入したハンドル軸４が軸取付用孔８，１３に対してがたつくことを、当該ハンドル軸４の取付部３０に取付けたガタ防止部材４０を、前記取付用孔８，１３の内面に圧接することで防止するハンドル軸のがたつき防止装置であって、
前記取付部３０は、前記ハンドル軸４の軸方向に対して直交するように形成し、かつハンドル軸４の第２面２１に開口した取付用の孔と、ハンドル軸４の第２面２１と相対向した第１面２０に開口し、かつ第１面２０および第２面２１と平行な断面における面積が取付用の孔の当該断面における面積よりも大きい凹部とで段付き形状とし、
前記取付用の孔は、前記第２面２１および前記凹部のみに開口した丸形状の孔であり、
前記ガタ防止部材４０は、硬質樹脂より成り、前記取付用の孔に嵌合する取付用の軸部と、この取付用の軸部よりも前記断面における面積が大きく前記凹部に嵌まり合うガタ防止用の軸部とで段付き軸形状とし、
前記ガタ防止部材４０は前記取付部３０に、その取付用の軸部が前記取付用の孔に、ハンドル軸４の軸方向に動かないように嵌合すると共に、当該取付用の軸部の面がハンドル軸４の第２面２１から突出して取付け、ガタ防止用の軸部が前記凹部に嵌まり合うと共に、当該ガタ防止用の軸部の面がハンドル軸４の第１面２０から突出して取付け、
このガタ防止用の軸部の面および取付用の軸部の面が前記取付用孔８，１３の内面に圧接して取付けられることを特徴とするハンドル軸のがたつき防止装置。When the handle shaft 4 inserted into the shaft mounting holes 8 and 13 rattles against the shaft mounting holes 8 and 13, the backlash preventing member 40 mounted on the mounting portion 30 of the handle shaft 4 is connected to the mounting hole 8. , 13 is a device for preventing rattling of the handle shaft that is prevented by being pressed against the inner surface of the handle,
The attachment portion 30 is formed so as to be orthogonal to the axial direction of the handle shaft 4 and is attached to a mounting hole opened in the second surface 21 of the handle shaft 4, and the second surface 21 of the handle shaft 4 A stepped shape is formed with a recess that opens in the first surface 20 facing each other and has a larger area in the cross section parallel to the first surface 20 and the second surface 21 than the area in the cross section of the mounting hole ,
The mounting hole is a round hole opened only in the second surface 21 and the recess,
The backlash prevention member 40 is made of a hard resin and has a mounting shaft portion that fits into the mounting hole, and a backlash prevention member that has a larger area in the cross section than the mounting shaft portion and fits into the recess. Stepped shaft shape with the shaft part for
The backlash prevention member 40 is fitted to the mounting portion 30 so that the mounting shaft portion does not move in the mounting hole in the axial direction of the handle shaft 4, and the surface of the mounting shaft portion. There attachment protruding from the second surface 21 of the handle shaft 4, together with the shaft portion for preventing backlash mate in the recess, the surface of the shaft portion for preventing the backlash protruding from the first surface 20 of the handle shaft 4 Installation,
An apparatus for preventing rattling of a handle shaft, characterized in that the surface of the shaft portion for preventing rattling and the surface of the shaft portion for mounting are mounted in pressure contact with the inner surfaces of the mounting holes 8 and 13.

ハンドル軸４の第１面２０に開口した大径孔３１で凹部とし、この大径孔３１と段差部３３を介して連続し、かつ前記ハンドル軸４の第２面２１に開口した小径孔３２で取付用の孔とし、取付部３０を段付き形状の孔とし、
前記小径孔３２にハンドル軸４の軸方向に動かないように嵌合した小径部４２で取付用の軸部とし、この小径部４２と段差部４３を介して連続した大径部４１でガタ防止用の軸部とし、ガタ防止部材４０を段付きの軸形状とし、
前記ガタ防止部材４０は前記取付部３０に、その小径部４２が前記小径孔３２にハンドル軸４の軸方向に動かないように嵌合すると共に、その端面４２ｃがハンドル軸４の第２面２１から突出し、大径部４１が前記大径孔３１に嵌まり合うと共に、大径部４１の端面４１ａがハンドル軸４の第１面２０から突出して取付けられ、その大径部４１の端面４１ａと前記小径部４２の端面４２ｃが前記取付用孔８，１３の２つの内面にそれぞれ圧接している請求項１記載のハンドル軸のがたつき防止装置。A large-diameter hole 31 opened in the first surface 20 of the handle shaft 4 is used as a recess. The small-diameter hole is continuous with the large-diameter hole 31 via the stepped portion 33 and opened in the second surface 21 of the handle shaft 4. 32 is a mounting hole, the mounting portion 30 is a stepped hole,
A small-diameter portion 42 fitted in the small-diameter hole 32 so as not to move in the axial direction of the handle shaft 4 serves as a mounting shaft portion, and the large-diameter portion 41 continuous through the small-diameter portion 42 and the stepped portion 43 prevents rattling. And the rattle prevention member 40 has a stepped shaft shape,
The backlash prevention member 40 is fitted to the mounting portion 30 so that the small diameter portion 42 does not move in the small diameter hole 32 in the axial direction of the handle shaft 4 , and its end surface 42 c is the second surface 21 of the handle shaft 4. projecting from, the large diameter portion 41 mate with the large diameter hole 31, the end face 41a of the large diameter portion 41 is mounted to protrude from the first surface 20 of the handle shaft 4, the end face 41a of the large-diameter portion 41 the end face 42c has a handle shaft of the anti-rattle device of claim 1, wherein the pressure contact to two of the inner surface of the mounting hole 8, 13 of the small-diameter portion 42.

ガタ防止部材４０の全長が前記ハンドル軸４の第１面２０と第２面２１との間の寸法より大きく、そのガタ防止部材４０の段差部４３が取付部３０の段差部３３に接した状態で大径部４１の端面４１ａが第１面２０から突出し、かつ小径部４２の端面４２ｃが第２面２１から突出するようにし、その大径部４１の端面４１ａ、小径部４２の端面４２ｃを、軸取付用孔８，１３の２つの内面にそれぞれ圧接した請求項２記載のハンドル軸のがたつき防止装置。The length of the backlash preventing member 40 is larger than the dimension between the first surface 20 and the second surface 21 of the handle shaft 4, and the stepped portion 43 of the backlash preventing member 40 is in contact with the stepped portion 33 of the mounting portion 30. The end surface 41a of the large diameter portion 41 protrudes from the first surface 20 and the end surface 42c of the small diameter portion 42 protrudes from the second surface 21, and the end surface 41a of the large diameter portion 41 and the end surface 42c of the small diameter portion 42 are formed. 3. The handle shaft rattling prevention device according to claim 2, wherein the shaft shaft mounting holes are in pressure contact with the two inner surfaces of the shaft mounting holes.

大径部４１、小径部４２は、ハンドル軸４を軸取付用孔８，１３に挿入する際の挿入ガイド用のガイド面を有し、
前記ガイド面を形成した部分のガタ防止部材４０の軸方向長さは、ガタ防止部材４０の全長とハンドル軸４の第１面２０と第２面２１との間の寸法の差の半分よりも長い請求項３記載のハンドル軸のがたつき防止装置。The large diameter portion 41 and the small diameter portion 42 have guide surfaces for insertion guides when the handle shaft 4 is inserted into the shaft mounting holes 8 and 13.
The axial length of the rattle prevention member 40 at the portion where the guide surface is formed is more than half of the difference between the overall length of the rattle prevention member 40 and the first surface 20 and the second surface 21 of the handle shaft 4. 4. A device for preventing rattling of a handle shaft according to claim 3.

軸取付用孔８，１３に挿入したハンドル軸４が軸取付用孔８，１３に対してがたつくことを、当該ハンドル軸４の取付部３０に取付けたガタ防止部材４０を、前記取付用孔８，１３の内面に圧接することで防止するハンドル軸のがたつき防止装置であって、
前記取付部３０は、前記ハンドル軸４の軸方向に対して直交すると共に、対向した２つの角部に向かうように形成された凹陥部３４と、この凹陥部３４の底面３４ａに開口した孔３５で段付き形状とし、
前記ガタ防止部材４０は、硬質樹脂より成り、前記孔３５に嵌合する軸状部４４と、この軸状部４４の一端部に設けた頭部４５で段付き軸形状とし、
前記ガタ防止部材４０は前記取付部３０に、その軸状部４４が前記孔３５にハンドル軸４の軸方向に動かないように嵌合し、頭部４５が凹陥部３４に嵌合すると共に、頭部４５の端面が前記２つの角部のうちの一方の角部を形成する隣接した２つの面から突出して取付けられ、
その頭部４５の端面が前記軸取付用孔８，１３の内面に圧接していることを特徴とするハンドル軸のがたつき防止装置。 When the handle shaft 4 inserted into the shaft mounting holes 8 and 13 rattles against the shaft mounting holes 8 and 13, the backlash preventing member 40 mounted on the mounting portion 30 of the handle shaft 4 is connected to the mounting hole 8. , 13 is a device for preventing rattling of the handle shaft that is prevented by being pressed against the inner surface of the handle,
The attachment portion 30, together with the perpendicular to the axial direction of the handle shaft 4, a recessed portion 34 formed to face the two corners facing, holes 35 opened in the bottom surface 34a of the concave portion 34 With a stepped shape,
The backlash preventing member 40 is made of a hard resin, and a shaft-like portion 44 to be fitted into the hole 35, the head 45 provided at one end portion of the shaft-like portion 44 of this stepped shaft shape,
The backlash preventing member 40 is the attachment portion 30, both when the shaft-like portion 44 is fitted so as not to move in the axial direction of the handle shaft 4 in the hole 35, the head 45 is fitted into the recess 34, An end surface of the head 45 is attached to protrude from two adjacent surfaces forming one of the two corners,
An apparatus for preventing rattling of a handle shaft, wherein an end surface of the head portion 45 is in pressure contact with the inner surfaces of the shaft mounting holes 8 and 13 .