JP4002322B2 - Escalator with step for wheelchair - Google Patents

Escalator with step for wheelchair Download PDF

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Publication number
JP4002322B2
JP4002322B2 JP10934297A JP10934297A JP4002322B2 JP 4002322 B2 JP4002322 B2 JP 4002322B2 JP 10934297 A JP10934297 A JP 10934297A JP 10934297 A JP10934297 A JP 10934297A JP 4002322 B2 JP4002322 B2 JP 4002322B2
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Japan
Prior art keywords
wheelchair
escalator
wheel
link
connecting rod
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JP10934297A
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Japanese (ja)
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JPH10297857A (en
Inventor
修宏 黒川
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Toshiba Elevator and Building Systems Corp
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Toshiba Elevator Co Ltd
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Priority to JP10934297A priority Critical patent/JP4002322B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、車いす用踏段が組み込まれた車いす用踏段付エスカレータに関する。
【0002】
【従来の技術】
図8は、従来の車いす用踏段付エスカレータの一例を示す部分右側面図で、部分的には、踏段の内部を示す縦断面図を示し、車いす用踏段が斜行部に移動した状態を示す。
【0003】
図8において、切断された山形鋼を溶接してトラス構造に製作された図示しない主枠の上部には、軟鋼板で製作されたガイドレール2Bが主枠に固定されている。このガイドレール2Bの上面には、図示しないチェーンに前輪6の車軸を介して無端状に連結されチェーンとともに駆動される踏段の後輪4Aが示されている。
このうち、前輪6に貫挿された図示しない車軸の両端は、ガイドレール2Bと平行に設けられた図示しないガイドレールの溝に遊嵌している。
【0004】
中央部に示した踏段1A,1B,1Cは、一点鎖線で示した電動機付の車いす3を搭載する車いす用踏段5Bを構成し、エスカレータの上下端の水平部分から斜行部に移動しても、上階側の踏段1Aから突き出た連結棒7Aと中間部の踏段1Bから突き出た連結棒7Bによって、各踏段の踏板9は水平な同一面を維持している。
【0005】
すなわち、この車いす用踏段5Bは、車いす3を搭載するために乗降口の欄干の側面に設けられた運転切換スイッチを車いす運転モードに切り換えることで、踏段1Aの内部に設けられた連結棒7Aが乗降口に設置された図示しないラックに係合して駆動されるピニオンなどの駆動機構で駆動されて、下階側に隣設連結された踏段1Bの上階側の内部に突き出る。
【0006】
同じく、踏段1Bの内部に設けられた連結棒7Bも、駆動機構で下階側に連結された踏段1Cの内部に突き出ることで、これらの踏段1A,1B,1Cは、連結棒7A,7Bを介して上端の踏板9が同一面を維持するように連結され、これらの踏段1A,1B,1Cが乗降口から斜行部に移動しても、車いす用踏段5Bに搭載された車いす3は水平状態が維持される。
【0007】
そのために、踏段1Bには、中間部が平行四辺形を形成して上下方向に伸縮する伸縮リンク8Aの下端が踏段枠に固定され、下階側の踏段1Cにも昇降行程の長い伸縮リンク8Bが収納されて、各踏板9の相互間が離れないように考慮されている。
【0008】
上階側の踏段1Aの更に上階側には、踏段1Aなどとともに図示しないチェーンに前輪6が連結される通常の踏段1Dが示され、下階側の踏段1Cの更に下階側にも、同様に踏段1Eが示されている。
【0009】
ところで、電動機付の車いす3は、バッテリが搭載されるために、重量が増えるだけでなく、手動の車いすと比べて全長も長くなっている。さらに、重心は、中心よりも後方に偏っている。
【0010】
そのため、各前輪6の車軸の端部は、前述したように図示しないガイドレールの溝に遊嵌して、偏荷重に伴う後輪4Aを支点とする各踏段の図8において反時計方向の浮き上がりを防いでいる。
【0011】
【発明が解決しようとする課題】
ところが、このように構成された車いす用踏段付エスカレータにおいては、車いすとこの車いすに乗車した利用者の荷重の大部分が、踏段1A,1B,1Cの後輪4A、特に踏段1Aの後輪4Aに印加されるので、これらの後輪の摩耗が促進され、保守・点検の頻度を上げなければならない。
そこで、本発明の目的は、保守・点検の頻度の増加を防ぐことのできる車いす用踏段付エスカレータを得ることである。
【0012】
【課題を解決するための手段】
請求項1に対応する発明は、連結棒で互いに連結される複数の車いす用踏段がトラスに巻装された踏段に連結され、前記車いす用踏段及び前記踏段の後輪が転動するガイドレールが前記トラスに設けられた車いす用踏段付エスカレータにおいて、車いす運転モード及び非車いす運転モード時に、前記複数の車いす用踏段それぞれの両側の前記後輪に隣接して、車いす用踏段にかかる荷重を前記後輪とともに受ける補助輪が設けられることを特徴とする。
【0013】
また、請求項2に対応する発明の車いす用踏段付エスカレータは、車いす用踏段に貫設された車軸の片側の後輪に補助輪を隣設したことを特徴とし、請求項3に対応する発明の車いす用踏段付エスカレータは、車いす用踏段に貫設され片側に後輪が挿入された車軸の他側に補助輪を設けたことを特徴とする。
【0014】
また、請求項4に対応する発明の車いす用踏段付エスカレータは、上端が連結棒に連結されこの連結棒の連結動作で駆動されるリンクの下端に補助輪を設けたことを特徴とし、請求項5に対応する発明の車いす用踏段付エスカレータは、連結棒に上端が連結された上リンクと、この上リンクに上部が連結され下端に補助輪が設けられる下リンクでリンクを構成したことを特徴とする。
【0015】
また、請求項6に対応する発明の車いす用踏段付エスカレータは、連結棒に上端が連結され下端に補助輪が設けられ連結棒の連結動作で中間部を軸として揺動するアームをリンクとしたことを特徴とする。
【0017】
このような手段によって、請求項1乃至請求項6に対応する発明の車いす用踏段付エスカレータにおいては、車いすの搭載によって増加した荷重の一部を補助輪に負担させて後輪の摩耗を抑え、請求項7に対応する発明の車いす用踏段付エスカレータにおいては、後輪の外周面にかかる応力を溝によって表面積が増えた後輪によって緩和する。
【0018】
【発明の実施の形態】
以下、本発明の車いす用踏段付エスカレータの一実施形態を図面を参照して説明する。
図1は、本発明の車いす用踏段付エスカレータの第1の実施形態を示す部分右側面図を示し、従来の技術で示した図8に対応し、請求項1及び請求項2に対応する図である。また、図2は、図1のA−A断面拡大図である。
【0019】
図1及び図2において、従来の技術で示した図8と異なるところは、車いす用踏段を構成する各踏段1A,1B,1Cの後輪を両側とも2個としたことで、これに伴って、ガイドレールの幅も広くなっている。なお、図8と同一部分には、同一符号を付して説明を省略する。
【0020】
すなわち、踏段1A,1B,1Cの左右の脚部1aの下端には、図8で示した各踏段の脚部1aに貫挿された車軸と比べて欄干側への突き出し長さが長い車軸11Aの基端側の段付部が挿入され、脚部1aの対向側から螺合された軸受ナットや軸受座金などで固定されている。
【0021】
この車軸11Aの欄干側には、僅かに小径となる段付部が形成され、この段付部には、内周にころがり軸受を備えた硬質ゴム製の一対の後輪4A,4Bがこれらの間に挿入された環状の薄いスペーサを介して圧入され、外側から挿入された軸受ナットや軸受座金などを介して内輪が固定されている。
【0022】
このように車いす用踏段5Aが構成された車いす用踏段付エスカレータにおいては、各踏段の後部に印加される荷重を二組の後輪4A,4Bで負担し、各後輪4A,4Bに印加される荷重を半減することで、硬質ゴムで車輪を構成する各後輪4A,4Bの外周の面圧を減らし、摩耗を抑えることができるので、保守・点検と交換の頻度を減らすことができる。
【0023】
次に、図3は、請求項7に対応する本発明の車いす用踏段付エスカレータの第2の実施の形態を示す図で、(a)は部分正面図を示し、第1の実施形態で示した図2に対応する図、(b)は、(a)の右側面図で、図1の部分拡大図に対応する図である。
【0024】
図3(a),(b)において、第1の実施形態で示した図1及び図2と異なるところは、車輪の形状と数で、他は、図1及び図2と同一である。したがって、この図1及び図2と同一要素には、同一符号を付して説明を省略する。
【0025】
すなわち、踏段1Aの脚部1aの下端に貫挿され固定された車軸11Aの欄干側には、図1及び図2で示した後輪4A,4Bと比べて幅が約2倍の後輪4Cの内輪が圧入され、この後輪4Cには、外周面の中央部に対して、U字状の浅い溝が形成される。
【0026】
このように車いす用踏段の後輪が構成された車いす用踏段付エスカレータにおいては、車いすと利用者の荷重によって車輪の外周の表面にかかる応力を、溝4aによって表面積が増えた外周面によって緩和することができるので、長期間に及ぶ運転中の応力の印加に伴う表面の疲労を軽減することができ、この疲労の蓄積に伴う硬質ゴムの表面における微小なひびの発生を防ぐことができ、寿命を延ばすことができる。
したがって、保守・点検の頻度の増加を防ぐことができ、後輪の交換の頻度を抑えることができる。
【0027】
次に、図4は、請求項3に対応する本発明の車いす用踏段付エスカレータの第3の実施形態を示す図で、(a)は、第1の実施形態で示した図2及び第2の実施形態で示した図3(a)の部分正面図に対応し、(b)は、(a)の右側面図で、第2の実施形態で示した図3に対応する部分右側面図である。
【0028】
図4において、第1の実施形態で示した図2及び第2の実施形態で示した図3(a),(b)と異なるところは、ガイドレールの配置と本数である。したがって、前述した第1の実施形態で示した図1,図2及び第2の実施形態で示した図3と同一要素には、同一符号を付して説明を省略する。
【0029】
すなわち、踏段1Aの脚部1aの下端の両側には、従来の技術の図8で示したガイドレール2Bと同一品の狭いガイドレール2Bが対称的に配置され、図示しない主枠に固定されている。
脚部1aの下端には、中央部が大径部となる車軸11Bの中央部が圧入され、両側から螺合された軸受ナットなどで固定されている。
【0030】
車軸11Bの両側に形成された小径部には、図1,図2で示した後輪4A,4Bと同一品の後輪4A,4Bが端部から圧入され、軸受ナットや軸受座金などを介して車軸11Bに軸受の内輪が固定されている。
【0031】
このように車いす用踏段が構成された車いす用踏段付エスカレータにおいては、後輪4A,4Bによって、車いすと利用者の荷重を分担するが、図1及び図2で示した後輪4A,4Bにかかる荷重が、車軸11Aの脚部1aの取付部分に対して片持ち荷重となるのに対し、図4で示した車軸11Bは、両側にほぼ同一の荷重が印加されるので、脚部1aから荷重点までの長さの短縮と相俟って、車軸11Bに印加される曲げ応力を減らすことができ、車軸11Bの小形・軽量化を図ることもできる。
【0032】
なお、ガイドレール2Bは、幅の広い1本のガイドレールとして、組立の作業性と、取付時の調整を容易にしてもよい。
また、第1の実施形態及び第3の実施形態で示した一対の後輪4A,4Bのうち、片側を他側と比べて直径を例えば1mm程度小さくすることで、車いすを搭載しない場合には、他側の後輪のみで荷重を受け、車いすを搭載した場合だけ片側の後輪にも荷重を分担させることで、他側の後輪の寿命を延ばしてもよい。
【0033】
さらに、一対の後輪のうちの片側の硬質ゴムの硬度を他側の後輪の硬質ゴムの硬度と比べて低い材料とすることで、車いすを搭載した場合だけ他側の後輪に荷重を分担させるようにしてもよい。
【0034】
次に、図5は、本発明の車いす用踏段付エスカレータの第4の実施形態を示す部分右側面図で、図1及び図3(a),図4(a)に対応し、請求項4及び請求項5に対応する図である。
【0035】
図5において、前述した実施形態と異なるところは、車いすを搭載するときだけ車いすの荷重を支える車いす用車輪を車いす用踏段の各踏段に追加したことである。
【0036】
すなわち、踏段1Aの後輪4Aの内側には、一対のガイドローラ14が縦に平行に設けられ、このガイドローラ14の間には、ばね用ステンレス鋼板から中間部の横断面がU字状に形成された下リンク12Bが遊嵌されている。
【0037】
この下リンク12Bの上部には、ばね用ステンレス鋼板から製作された上リンク12Aの下端が連結ピンを介して連結され、この上リンク12Aの上端は、連結棒7Aの側面に連結されている。
【0038】
下リンク12Bの上端の上リンク12A側の面には、弧状の凸部が形成され、上リンク12Aの中間部の下リンク12Bの上端との対向面には、弧状の凹部が形成されている。
【0039】
下リンク12Bの下端には、車いす用車輪13が車軸を介して取り付けられている。なお、踏段1Bも上リンクと下リンクの長さは異なるが、同様に構成されている。
【0040】
このように踏段1A,1Bが構成された車いす用踏段付エスカレータにおいては、車いす運転モードへの切換で図5の矢印Bで示すように連結棒7A,7Bが駆動されると、上リンク12Aが垂直となって、下連結ピンを介して下方に押され、この下リンク12Bの下端の車いす用車輪13が下降し、図6(a)に示すようにガイドレール2Bに接触する。
【0041】
このとき、下リンク12Bの上端に形成された凸部は、図6(a)のD−D断面拡大図を示す図6(b)のように、上リンク12Aの中間部に形成された凹部に嵌合して、上下のリンクは図6(a)で示す垂直状態を維持する。
【0042】
したがって、このように車いす用踏段が構成された車いす用踏段付エスカレータにおいては、連結棒7Aの連結動作で上下のリンクを駆動し、車いす用車輪13をガイドレール2Bに接触させて、車いすの荷重を車いす用車輪13に分担させることができるので、後輪の寿命の低下を防ぐことができる。
【0043】
次に、図7は、本発明の車いす用踏段付エスカレータの第5の実施の形態を示す部分右側面図で、第4の実施形態で示した図5に対応し、特に請求項6に対応する図である。
【0044】
図7において、第4の実施形態で示した図5と異なるところは、車いす用車輪13の取付構造である。
【0045】
すなわち、連結棒7Aには、アーム15の上端が連結され、このアーム15の下端には、車いす用車輪13が車軸を介して取り付けられ、アーム15の中間部には楕円穴が形成され、この楕円穴には、踏段支えに固定された軸16が遊嵌している。
【0046】
このように車いす用踏段が構成された車いす用踏段付エスカレータにおいては、連結棒7Aが矢印Eで示すように駆動されると、アーム15は軸16に楕円穴が案内されて矢印Fで示すように反時計方向に揺動するとともに、車いす用車輪13が下降してガイドレール2Bに接触する。
【0047】
したがって、このようにアーム15が連結された車いす用踏段付エスカレータにおいても、連結棒7Aの連結動作に連動して、車いすの荷重をアーム15と車いす用車輪13で分担して受けることができるので、後輪の寿命の低下を防ぐことができる。
【0048】
なお、上記実施形態では、踏板が同一面となる踏段が3個の場合で説明したが、上階側の踏段の踏板が傾斜して中間部と下階側の踏段の踏板だけが同一面となる車いす用踏段を備えた車いす用踏段付エスカレータでも同様に適用することができる。
【0049】
【発明の効果】
以上、請求項1に対応する発明によれば、連結棒で互いに連結される複数の車いす用踏段がトラスに巻装された踏段に連結され、前記車いす用踏段及び前記踏段の後輪が転動するガイドレールが前記トラスに設けられた車いす用踏段付エスカレータにおいて、車いす運転モード及び非車いす運転モード時に、前記複数の車いす用踏段それぞれの両側の前記後輪に隣接して、車いす用踏段にかかる荷重を前記後輪とともに受ける補助輪が設けられることで、車いすの搭載によって増加した荷重の一部を補助輪に負担させて後輪の磨耗を抑えたので、保守・点検の頻度の増加を防ぐことのできる車いす用踏段付エスカレータを得ることができる。
【0050】
また、請求項2に対応する発明によれば、車いす用踏段に貫設された車軸の片側の後輪に補助輪を隣設することで、請求項3に対応する発明によれば、車いす用踏段に貫設され片側に後輪が挿入された車軸の他側に補助輪を設けることで、車いすの搭載によって増加した荷重の一部を車軸の片側又は他側の補助輪に負担させて後輪の摩耗を抑えたので、保守・点検の頻度の増加を防ぐことのできる車いす用踏段付エスカレータを得ることができる。
【0051】
また、請求項4に対応する発明によれば、上端が連結棒に連結されこの連結棒の連結動作で駆動されるリンクの下端に補助輪を設けることで、請求項5に対応する発明の車いす用踏段付エスカレータは、連結棒に上端が連結された上リンクと、この上リンクに上部が連結され下端に補助輪が設けられる下リンクでリンクを構成することで、車いすの搭載によって増加した荷重の一部をリンクの下端の補助輪に負担させて後輪の摩耗を抑えたので、保守・点検の頻度の増加を防ぐことのできる車いす用踏段付エスカレータを得ることができる。
【0052】
また、請求項6に対応する発明によれば、連結棒に上端が連結され下端に補助輪が設けられ連結棒の連結動作で中間部を軸として揺動するアームをリンクとすることで、車いすの搭載によって増加した荷重の一部をアームに負担させて後輪の摩耗を抑えたので、保守・点検の頻度の増加を防ぐことのできる車いす用踏段付エスカレータを得ることができる。
【図面の簡単な説明】
【図1】本発明の車いす用踏段付エスカレータの第1の実施形態を示す部分右側面図。
【図2】図1のA−A断面拡大図。
【図3】本発明の車いす用踏段付エスカレータの第2の実施形態を示す図で、(a)は部分正面図、(b)は(a)の右側面図。
【図4】本発明の車いす用踏段付エスカレータの第3の実施形態を示す図で、(a)は部分正面図、(b)は(a)の右側面図。
【図5】本発明の車いす用踏段付エスカレータの第4の実施形態を示す部分右側面図。
【図6】(a)は、本発明の車いす用踏段付エスカレータの第4の実施形態の作用を示す部分右側面図、(b)は(a)のD−D断面拡大図。
【図7】本発明の車いす用踏段付エスカレータの第5の実施形態を示す部分右側面図。
【図8】従来の車いす用踏段付エスカレータの一例を示す部分右側面図。
【符号の説明】
1A,1B,1C,1D,1E…踏段、1a…脚部、2A,2B…ガイドレール、3…車いす、4A,4B,4C…後輪、5A…車いす用踏段、6…前輪、7A,7B…連結棒、8A,8B…伸縮リンク、9…踏板、11A,11B…車軸、12A…上リンク、12B…下リンク、13…車いす用車輪、14…ガイドローラ、15…アーム、16…軸。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an escalator with a wheelchair step in which a wheelchair step is incorporated.
[0002]
[Prior art]
FIG. 8 is a partial right side view showing an example of a conventional escalator with a wheelchair step, partially showing a longitudinal sectional view showing the inside of the step, and showing a state in which the wheelchair step is moved to a skew portion. .
[0003]
In FIG. 8, a guide rail 2 </ b> B made of mild steel plate is fixed to the main frame on an upper portion of a main frame (not shown) that is manufactured in a truss structure by welding the cut angle steel. On the upper surface of the guide rail 2B, there is shown a rear wheel 4A of a step that is endlessly connected to a chain (not shown) via an axle of the front wheel 6 and driven together with the chain.
Of these, both ends of an axle (not shown) inserted through the front wheel 6 are loosely fitted in grooves of a guide rail (not shown) provided in parallel with the guide rail 2B.
[0004]
Steps 1A, 1B, and 1C shown in the center portion constitute a wheelchair step 5B on which a wheelchair 3 with an electric motor shown by a one-dot chain line is mounted, and even if the escalator moves from the horizontal portion to the skew portion. The step board 9 of each step maintains the same horizontal plane by the connecting rod 7A protruding from the upper floor step 1A and the connecting rod 7B protruding from the intermediate step 1B.
[0005]
In other words, this wheelchair step 5B has a connecting rod 7A provided inside the step 1A by switching the operation changeover switch provided on the railing side of the entrance and exit to the wheelchair operation mode in order to mount the wheelchair 3. It is driven by a drive mechanism such as a pinion that is driven by engaging with a rack (not shown) installed at the entrance and exit, and protrudes into the upper floor side of the step 1B that is adjacently connected to the lower floor side.
[0006]
Similarly, the connecting rod 7B provided inside the step 1B also protrudes into the step 1C connected to the lower floor by the drive mechanism, so that these steps 1A, 1B, 1C are connected to the connecting rods 7A, 7B. The wheelchair 3 mounted on the wheelchair step 5B is horizontal even if the step plate 9 at the upper end is connected so as to maintain the same surface, and these steps 1A, 1B, 1C move from the entrance to the oblique portion. State is maintained.
[0007]
For this purpose, the lower end of the telescopic link 8A, whose middle part forms a parallelogram and expands and contracts in the vertical direction, is fixed to the step frame on the step 1B. Is stored so that the treads 9 are not separated from each other.
[0008]
On the upper floor side of the step 1A on the upper floor side, a normal step 1D in which the front wheel 6 is connected to a chain (not shown) together with the step 1A, etc. is shown, and further on the lower floor side of the step 1C on the lower floor side, Similarly, step 1E is shown.
[0009]
By the way, since the wheelchair 3 with an electric motor is mounted with a battery, it not only increases in weight but also has a longer overall length than a manual wheelchair. Furthermore, the center of gravity is biased backward from the center.
[0010]
Therefore, the end of the axle of each front wheel 6 is loosely fitted in the groove of the guide rail (not shown) as described above, and lifts in the counterclockwise direction in FIG. Is preventing.
[0011]
[Problems to be solved by the invention]
However, in the escalator with a wheelchair step configured as described above, most of the load of the wheelchair and the user riding on the wheelchair is largely the rear wheel 4A of the step 1A, 1B, 1C, particularly the rear wheel 4A of the step 1A. Therefore, wear of these rear wheels is promoted, and the frequency of maintenance and inspection must be increased.
Accordingly, an object of the present invention is to provide a wheelchair stepped escalator capable of preventing an increase in the frequency of maintenance and inspection.
[0012]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a guide rail in which a plurality of wheelchair steps connected to each other by a connecting rod are connected to a step wound around a truss, and the wheelchair step and the rear wheel of the step roll. In the wheelchair step escalator provided in the truss, the load applied to the wheelchair step is adjacent to the rear wheel on both sides of each of the plurality of wheelchair steps in the wheelchair operation mode and the non-wheelchair operation mode. An auxiliary wheel to be received together with the wheel is provided.
[0013]
An escalator with a wheelchair step according to a second aspect of the present invention is characterized in that an auxiliary wheel is provided adjacent to a rear wheel on one side of an axle extending through the wheelchair step. This wheelchair step-equipped escalator is characterized in that an auxiliary wheel is provided on the other side of the axle with a rear wheel inserted on one side thereof through the wheelchair step.
[0014]
An escalator with a step for a wheelchair according to a fourth aspect of the invention is characterized in that the upper end is connected to a connecting rod, and an auxiliary wheel is provided at the lower end of the link driven by the connecting operation of the connecting rod. The escalator with a step for a wheelchair according to the invention corresponding to No. 5 is characterized in that the link is constituted by an upper link having an upper end connected to a connecting rod, and a lower link having an upper portion connected to the upper link and an auxiliary wheel provided at the lower end. And
[0015]
An escalator with a step for a wheelchair according to a sixth aspect of the present invention uses a link that has an upper end connected to a connecting rod, an auxiliary wheel provided at the lower end, and an arm that swings about an intermediate portion by a connecting operation of the connecting rod. It is characterized by that.
[0017]
By such means, in the wheelchair stepped escalator of the invention corresponding to claims 1 to 6, a part of the load increased by mounting the wheelchair is borne on the auxiliary wheel to suppress wear of the rear wheel, In the wheelchair stepped escalator of the invention corresponding to claim 7, the stress applied to the outer peripheral surface of the rear wheel is relieved by the rear wheel whose surface area is increased by the groove.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a wheelchair stepped escalator according to the present invention will be described with reference to the drawings.
FIG. 1 is a partial right side view showing a first embodiment of an escalator with a step for a wheelchair according to the present invention, corresponding to FIG. 8 shown in the prior art, and corresponding to claim 1 and claim 2. It is. Moreover, FIG. 2 is an AA cross-sectional enlarged view of FIG.
[0019]
1 and FIG. 2 is different from FIG. 8 shown in the prior art in that there are two rear wheels 1A, 1B, 1C constituting the wheelchair steps on both sides. The width of the guide rail is also widened. The same parts as those in FIG.
[0020]
That is, at the lower ends of the left and right legs 1a of the steps 1A, 1B, 1C, an axle 11A having a longer protruding length toward the balustrade side than the axle inserted through the legs 1a of each step shown in FIG. The base end side stepped portion is inserted and fixed by a bearing nut, a bearing washer or the like screwed from the opposite side of the leg portion 1a.
[0021]
A stepped portion having a slightly smaller diameter is formed on the balustrade side of the axle 11A, and a pair of hard rubber rear wheels 4A and 4B each provided with a rolling bearing on the inner periphery thereof are provided on the stepped portion. The inner ring is fixed through a bearing nut or a bearing washer inserted from the outside through a thin annular spacer inserted therebetween.
[0022]
In the wheelchair step escalator having the wheelchair step 5A configured as described above, the load applied to the rear portion of each step is borne by the two rear wheels 4A and 4B, and is applied to the rear wheels 4A and 4B. By reducing the load to be halved, the surface pressure on the outer periphery of each of the rear wheels 4A and 4B constituting the wheel with hard rubber can be reduced and the wear can be suppressed, so the frequency of maintenance / inspection and replacement can be reduced.
[0023]
Next, FIG. 3 is a view showing a second embodiment of an escalator with a step for a wheelchair according to the present invention corresponding to claim 7, wherein (a) shows a partial front view and shows in the first embodiment. FIG. 2B corresponding to FIG. 2 is a right side view of FIG. 2A and corresponding to the partially enlarged view of FIG.
[0024]
3 (a) and 3 (b) are different from FIG. 1 and FIG. 2 shown in the first embodiment in the shape and number of wheels, and the others are the same as those in FIG. 1 and FIG. Therefore, the same elements as those in FIGS. 1 and 2 are denoted by the same reference numerals and description thereof is omitted.
[0025]
That is, the rear wheel 4C is approximately twice as wide as the rear wheels 4A and 4B shown in FIGS. 1 and 2 on the balustrade side of the axle 11A inserted and fixed to the lower end of the leg 1a of the step 1A. The inner ring is press-fitted, and a U-shaped shallow groove is formed in the rear wheel 4C with respect to the central portion of the outer peripheral surface.
[0026]
In the wheelchair step-equipped escalator in which the rear wheel of the wheelchair step is configured in this way, the stress applied to the outer peripheral surface of the wheel by the load of the wheelchair and the user is relieved by the outer peripheral surface whose surface area is increased by the groove 4a. Therefore, it is possible to reduce the fatigue of the surface due to the stress applied during the operation for a long time, and to prevent the generation of micro cracks on the surface of the hard rubber due to the accumulation of this fatigue. Can be extended.
Therefore, an increase in the frequency of maintenance / inspection can be prevented, and the frequency of rear wheel replacement can be suppressed.
[0027]
Next, FIG. 4 is a view showing a third embodiment of an escalator with a step for a wheelchair according to the present invention corresponding to claim 3. FIG. 4A is a view showing the second embodiment shown in FIG. 3B corresponds to the partial front view of FIG. 3A shown in the embodiment, and FIG. 3B is the right side view of FIG. 3A and the partial right side view corresponding to FIG. 3 shown in the second embodiment. It is.
[0028]
In FIG. 4, what is different from FIG. 2 shown in the first embodiment and FIGS. 3A and 3B shown in the second embodiment is the arrangement and number of guide rails. Therefore, the same elements as those in FIGS. 1 and 2 shown in the first embodiment and FIG. 3 shown in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0029]
That is, on both sides of the lower end of the leg 1a of the step 1A, narrow guide rails 2B that are the same as the guide rails 2B shown in FIG. 8 of the prior art are symmetrically arranged and fixed to a main frame (not shown). Yes.
At the lower end of the leg portion 1a, the center portion of the axle 11B having a large diameter portion at the center portion is press-fitted and fixed by a bearing nut or the like screwed from both sides.
[0030]
The rear wheels 4A and 4B, which are the same as the rear wheels 4A and 4B shown in FIGS. 1 and 2, are press-fitted into the small-diameter portions formed on both sides of the axle 11B from the ends, via bearing nuts and bearing washers, etc. The inner ring of the bearing is fixed to the axle 11B.
[0031]
In an escalator with a wheelchair step configured as described above, the load of the wheelchair and the user is shared by the rear wheels 4A and 4B. However, the rear wheels 4A and 4B shown in FIGS. While this load becomes a cantilever load on the mounting portion of the leg portion 1a of the axle 11A, the axle 11B shown in FIG. 4 is applied with substantially the same load on both sides. Combined with the shortening of the length to the load point, the bending stress applied to the axle 11B can be reduced, and the axle 11B can be reduced in size and weight.
[0032]
Note that the guide rail 2B may be a single wide guide rail to facilitate assembly workability and adjustment at the time of attachment.
In addition, in the case where a wheelchair is not mounted by reducing one side of the pair of rear wheels 4A and 4B shown in the first embodiment and the third embodiment by about 1 mm in diameter compared to the other side, for example. The life of the rear wheel on the other side may be extended by receiving the load only on the rear wheel on the other side and sharing the load on the rear wheel on one side only when a wheelchair is mounted.
[0033]
In addition, the hardness of the hard rubber on one side of the pair of rear wheels is made lower than the hardness of the hard rubber on the rear wheel on the other side, so that a load is applied to the rear wheel on the other side only when a wheelchair is installed. You may make it share.
[0034]
Next, FIG. 5 is a partial right side view showing a fourth embodiment of the escalator with a step for a wheelchair according to the present invention, and corresponds to FIG. 1, FIG. 3 (a) and FIG. 4 (a). And it is a figure corresponding to Claim 5.
[0035]
In FIG. 5, the difference from the above-described embodiment is that wheelchair wheels that support the load of the wheelchair only when the wheelchair is mounted are added to each step of the wheelchair step.
[0036]
That is, a pair of guide rollers 14 are provided in parallel inside the rear wheel 4A of the step 1A, and between the guide rollers 14, the cross section of the intermediate portion from the stainless steel plate for spring is U-shaped. The formed lower link 12B is loosely fitted.
[0037]
A lower end of an upper link 12A made of a stainless steel plate for a spring is connected to an upper portion of the lower link 12B via a connecting pin, and an upper end of the upper link 12A is connected to a side surface of the connecting rod 7A.
[0038]
An arc-shaped convex portion is formed on the upper link 12A side surface of the upper end of the lower link 12B, and an arc-shaped concave portion is formed on the surface facing the upper end of the lower link 12B in the middle portion of the upper link 12A. .
[0039]
A wheelchair wheel 13 is attached to the lower end of the lower link 12B via an axle. The step 1B has the same configuration although the lengths of the upper link and the lower link are different.
[0040]
In the escalator with a wheelchair step having the steps 1A and 1B as described above, when the connecting rods 7A and 7B are driven as indicated by the arrow B in FIG. 5 by switching to the wheelchair operation mode, the upper link 12A is It becomes vertical and is pushed downward via the lower connecting pin, and the wheel 13 for the wheelchair at the lower end of the lower link 12B is lowered and contacts the guide rail 2B as shown in FIG. 6 (a).
[0041]
At this time, the convex portion formed at the upper end of the lower link 12B is a concave portion formed in the middle portion of the upper link 12A as shown in FIG. 6B showing a DD cross-sectional enlarged view of FIG. The upper and lower links maintain the vertical state shown in FIG.
[0042]
Therefore, in the wheelchair step-equipped escalator having the wheelchair steps as described above, the upper and lower links are driven by the connecting operation of the connecting rod 7A, and the wheelchair wheel 13 is brought into contact with the guide rail 2B to load the wheelchair. Can be shared by the wheelchair wheel 13, so that the life of the rear wheel can be prevented from being reduced.
[0043]
Next, FIG. 7 is a partial right side view showing a fifth embodiment of the escalator with a step for a wheelchair of the present invention, corresponding to FIG. 5 shown in the fourth embodiment, and particularly corresponding to claim 6. It is a figure to do.
[0044]
7 differs from FIG. 5 shown in the fourth embodiment in the mounting structure of the wheel 13 for the wheelchair.
[0045]
That is, the upper end of the arm 15 is connected to the connecting rod 7A, and a wheelchair wheel 13 is attached to the lower end of the arm 15 via an axle, and an elliptical hole is formed in the middle portion of the arm 15, A shaft 16 fixed to the step support is loosely fitted in the elliptical hole.
[0046]
In an escalator with a wheelchair step configured as described above, when the connecting rod 7A is driven as indicated by an arrow E, the arm 15 is guided by an elliptical hole on the shaft 16 and indicated by an arrow F. The wheelchair wheel 13 descends and comes into contact with the guide rail 2B.
[0047]
Therefore, even in the escalator with a wheelchair step connected to the arm 15 in this way, the load of the wheelchair can be shared by the arm 15 and the wheelchair wheel 13 in conjunction with the connecting operation of the connecting rod 7A. This can prevent a decrease in the life of the rear wheel.
[0048]
In the above-described embodiment, the case where the number of steps on the same surface is three has been described. However, the steps on the upper floor are inclined so that only the steps on the intermediate and lower steps are on the same surface. The present invention can be similarly applied to an escalator with a wheelchair step provided with a wheelchair step.
[0049]
【The invention's effect】
As described above, according to the invention corresponding to claim 1, the plurality of wheelchair steps connected to each other by the connecting rod are connected to the steps wound around the truss, and the wheelchair steps and the rear wheels of the steps roll. An escalator with a wheelchair step provided on the truss for a wheelchair step adjacent to the rear wheel on both sides of each of the plurality of wheelchair steps in a wheelchair operation mode and a non-wheelchair operation mode By providing an auxiliary wheel that receives the load together with the rear wheel, a part of the load increased by mounting the wheelchair is borne on the auxiliary wheel to suppress wear of the rear wheel, thereby preventing an increase in the frequency of maintenance and inspection. An escalator with a wheelchair step can be obtained.
[0050]
According to the invention corresponding to claim 2, the auxiliary wheel is provided adjacent to the rear wheel on one side of the axle extending through the wheelchair step, so that according to the invention corresponding to claim 3, By providing an auxiliary wheel on the other side of the axle that penetrates the step and the rear wheel is inserted on one side, the auxiliary wheel on one side or the other side of the axle is partially borne by the auxiliary wheel on the axle. Since the wear of the wheel is suppressed, an escalator with a step for a wheelchair that can prevent an increase in the frequency of maintenance and inspection can be obtained.
[0051]
According to the invention corresponding to claim 4, the wheelchair of the invention corresponding to claim 5 is provided by providing an auxiliary wheel at the lower end of the link connected to the connecting rod and driven by the connecting operation of the connecting rod. The escalator with steps for the load is increased by mounting the wheelchair by configuring the link with the upper link with the upper end connected to the connecting rod and the lower link with the upper link connected to the upper link and the auxiliary wheel at the lower end. Since the rear wheel is restrained from being worn by partly bearing the auxiliary wheel at the lower end of the link, an escalator with a step for a wheelchair that can prevent an increase in the frequency of maintenance and inspection can be obtained.
[0052]
According to the invention corresponding to claim 6, the wheelchair is formed by connecting the upper end to the connecting rod and providing an auxiliary wheel at the lower end, and using the link as an arm that swings around the intermediate portion in the connecting operation of the connecting rod. Since the rear wheels are restrained from wear by causing the arm to bear a part of the increased load due to the mounting, it is possible to obtain an escalator with a wheelchair step that can prevent an increase in the frequency of maintenance and inspection.
[Brief description of the drawings]
FIG. 1 is a partial right side view showing a first embodiment of an escalator with a wheelchair step according to the present invention.
FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.
FIGS. 3A and 3B are diagrams showing a second embodiment of an escalator with a wheelchair step according to the present invention, in which FIG. 3A is a partial front view, and FIG. 3B is a right side view of FIG.
4A and 4B are diagrams showing a third embodiment of an escalator with a wheelchair step according to the present invention, in which FIG. 4A is a partial front view, and FIG. 4B is a right side view of FIG.
FIG. 5 is a partial right side view showing a fourth embodiment of an escalator with a step for a wheelchair according to the present invention.
FIG. 6A is a partial right side view showing the operation of the fourth embodiment of the escalator with a wheelchair step of the present invention, and FIG. 6B is an enlarged sectional view taken along the line DD of FIG.
FIG. 7 is a partial right side view showing a fifth embodiment of the escalator with a step for a wheelchair according to the present invention.
FIG. 8 is a partial right side view showing an example of a conventional wheelchair stepped escalator.
[Explanation of symbols]
1A, 1B, 1C, 1D, 1E ... Step, 1a ... Leg, 2A, 2B ... Guide rail, 3 ... Wheelchair, 4A, 4B, 4C ... Rear wheel, 5A ... Wheelchair step, 6 ... Front wheel, 7A, 7B ... connecting rod, 8A, 8B ... telescopic link, 9 ... tread, 11A, 11B ... axle, 12A ... upper link, 12B ... lower link, 13 ... wheelchair wheel, 14 ... guide roller, 15 ... arm, 16 ... shaft.

Claims (6)

連結棒で互いに連結される複数の車いす用踏段がトラスに巻装された踏段に連結され、前記車いす用踏段及び前記踏段の後輪が転動するガイドレールが前記トラスに設けられた車いす用踏段付エスカレータにおいて、車いす運転モード及び非車いす運転モード時に、前記複数の車いす用踏段それぞれの両側の前記後輪に隣接して、車いす用踏段にかかる荷重を前記後輪とともに受ける補助輪が設けられることを特徴とする車いす用踏段付エスカレータ。 A wheelchair step in which a plurality of wheelchair steps connected to each other by a connecting rod are connected to a step wound around a truss, and a guide rail on which the wheel for the wheelchair and the rear wheel of the step roll is provided on the truss. In the attached escalator, an auxiliary wheel that receives the load applied to the wheelchair step together with the rear wheel is provided adjacent to the rear wheel on both sides of each of the plurality of wheelchair steps in the wheelchair operation mode and the non-wheelchair operation mode. An escalator with a step for a wheelchair. 前記補助輪を、前記車いす用踏段に貫設された車軸の片側の前記後輪に隣設したことを特徴とする請求項1に記載の車いす用踏段付エスカレータ。  2. The escalator with a wheelchair step according to claim 1, wherein the auxiliary wheel is provided adjacent to the rear wheel on one side of an axle that extends through the wheelchair step. 前記補助輪を、前記車いす用踏段に貫設された片側に前記後輪が挿入された車軸の他側に設けたことを特徴とする請求項1に記載の車いす用踏段付エスカレータ。  2. The escalator with a wheelchair step according to claim 1, wherein the auxiliary wheel is provided on the other side of the axle in which the rear wheel is inserted on one side of the wheelchair step. 前記補助輪を、上端が前記連結棒に連結されこの連結棒の連結動作で駆動されるリンクの下端に設けたことを特徴とする請求項1に記載の車いす用踏段付エスカレータ。  The escalator with a step for a wheelchair according to claim 1, wherein the auxiliary wheel is provided at a lower end of a link whose upper end is connected to the connecting rod and driven by a connecting operation of the connecting rod. 前記リンクを、前記連結棒に上端が連結された上リンクと、この上リンクに上部が連結され下端に前記補助輪が設けられる下リンクで構成したことを特徴とする請求項4に記載の車いす用踏段付エスカレータ。  5. The wheelchair according to claim 4, wherein the link is configured by an upper link having an upper end connected to the connecting rod, and a lower link having an upper portion connected to the upper link and the auxiliary wheel provided at a lower end. Escalator with steps for use. 前記リンクを、前記連結棒に上端が連結され下端に前記補助輪が設けられ前記連結棒の連結動作で中間部を軸として揺動するアームとしたことを特徴とする請求項4に記載の車いす用踏段付エスカレータ。  5. The wheelchair according to claim 4, wherein the link is an arm that has an upper end connected to the connecting rod and an auxiliary wheel provided at the lower end, and swings about an intermediate portion when the connecting rod is connected. Escalator with steps for use.
JP10934297A 1997-04-25 1997-04-25 Escalator with step for wheelchair Expired - Fee Related JP4002322B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10934297A JP4002322B2 (en) 1997-04-25 1997-04-25 Escalator with step for wheelchair

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Application Number Priority Date Filing Date Title
JP10934297A JP4002322B2 (en) 1997-04-25 1997-04-25 Escalator with step for wheelchair

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JPH10297857A JPH10297857A (en) 1998-11-10
JP4002322B2 true JP4002322B2 (en) 2007-10-31

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9808140B2 (en) 2000-04-03 2017-11-07 Intuitive Surgical Operations, Inc. Steerable segmented endoscope and method of insertion
US10105036B2 (en) 2000-04-03 2018-10-23 Intuitive Surgical Operations, Inc. Connector device for a controllable instrument
US10327625B2 (en) 2000-04-03 2019-06-25 Intuitive Surgical Operations, Inc. Apparatus and methods for facilitating treatment of tissue via improved delivery of energy based and non-energy based modalities
US10893794B2 (en) 2000-04-03 2021-01-19 Intuitive Surgical Operations, Inc. Steerable endoscope and improved method of insertion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9808140B2 (en) 2000-04-03 2017-11-07 Intuitive Surgical Operations, Inc. Steerable segmented endoscope and method of insertion
US10105036B2 (en) 2000-04-03 2018-10-23 Intuitive Surgical Operations, Inc. Connector device for a controllable instrument
US10327625B2 (en) 2000-04-03 2019-06-25 Intuitive Surgical Operations, Inc. Apparatus and methods for facilitating treatment of tissue via improved delivery of energy based and non-energy based modalities
US10736490B2 (en) 2000-04-03 2020-08-11 Intuitive Surgical Operations, Inc. Connector device for a controllable instrument
US10893794B2 (en) 2000-04-03 2021-01-19 Intuitive Surgical Operations, Inc. Steerable endoscope and improved method of insertion
US11026564B2 (en) 2000-04-03 2021-06-08 Intuitive Surgical Operations, Inc. Apparatus and methods for facilitating treatment of tissue via improved delivery of energy based and non-energy based modalities

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