JP3978032B2

JP3978032B2 - Passenger conveyor

Info

Publication number: JP3978032B2
Application number: JP2001383881A
Authority: JP
Inventors: 和平小嶋; 忠一斎藤; 博康小川; 哲也高橋
Original assignee: Hitachi Ltd; Hitachi Mito Engineering Co Ltd
Current assignee: Hitachi Ltd; Hitachi Mito Engineering Co Ltd
Priority date: 2001-12-18
Filing date: 2001-12-18
Publication date: 2007-09-19
Anticipated expiration: 2021-12-18
Also published as: JP2003182960A

Description

【０００１】
【発明の属する技術分野】
本発明は、エスカレーターや電動道路等の乗客コンベア装置に係り、特に、狭域の場所に設置されるのに好適な乗客コンベア装置に関する。
【０００２】
【従来の技術】
従来、乗客コンベア装置の設置面積を小さくするために、踏段を駆動する駆動軸周囲に電動機を設置して駆動軸を直接駆動したり（例えば特開昭５６−１０８６８３号公報，特表２０００−５０５４０６号公報）、踏段の往路の間において踏段チェーンを直接駆動したり（例えば特開昭５５−４０１８５号公報）する構成が既に提案されている。
【０００３】
【発明が解決しようとする課題】
上記従来の技術は、電動機等の駆動機械装置を駆動軸周囲や踏段の往路と復路間に設置できるので、乗客コンベアの構成部品を支持する主枠内に駆動機械設置用のスペースを新たに確保する必要がなく、その分、主枠の全長を短くして設置面積を小さくできるのである。
【０００４】
しかし、上記構成は、移動手摺を駆動する機構についての配慮がなされておらず、さらなる設置面積の縮小が要求された場合、それ以上の設置面積の縮小は事実上困難であった。
【０００５】
本発明の目的は、十分なる設置面積の縮小を行い得る乗客コンベアを提供することにある。
【０００６】
【課題を解決するための手段】
本発明は上記目的を達成するために、駆動輪を皿状に形成し、この駆動輪の外周部と主枠を構成する側枠とを互いの鉛直投影が重なるように配置し、かつ前記駆動輪とは反対側に位置する主スプロケットの反踏段側であってこの主スプロケットの側面に手摺駆動スプロケットを固定し、この手摺駆動スプロケットから中間軸を介して一対の手摺駆動装置を駆動するように構成したのである。
【０００７】
上記構成のように、駆動輪の外周部と主枠の側枠とを互いの鉛直投影が重なるように配置したことで、駆動輪の外周部と側枠との間に設けていた隙間がなくなり、その分前記側枠を駆動輪側に寄せることができ、その結果、主枠の幅寸法を低減できるのである。さらに、移動手摺の駆動力を駆動輪から離れた踏段の反対側から中間軸を介して付与するようにしたので、従来、主スプロケットと駆動輪間に設けられていた手摺駆動スプロケットを不要とすることができ、その分、幅寸法をさらに低減することができるのである。
【０００８】
【発明の実施の形態】
以下本発明による第１の実施の形態を図１〜図５について説明する。一般にエスカレーター１は、建築物の上階２と下階３に跨って設置された主枠４をベースに構成されている。主枠４は、図３に示すように、左右一対の側枠５Ａ，５Ｂと、これら左右の側枠５Ａ，５Ｂを連結する底板６や横桁７から構成され、さらに前記側枠５Ａ，５Ｂは、エスカレーターの長手方向に延在する上弦材８と、下弦材９と、これら上弦材８と下弦材９とを連結する縦部材１０とから構成されている。
【０００９】
上記構成の主枠４の上階２側には上部機械室となる上部水平部１１が形成され、下階３側には下部機械室となる下部水平部１２が形成され、上部水平部１１と下部水平部１２とは傾斜部１３よって連結されている。一般的に、上部水平部１１と下部水平部１２とは、その上部を夫々乗客が乗り降りするための乗降床１１Ｆ，１２Ｆで塞がれている。
【００１０】
このように構成された主枠４の上部水平部１１と下部水平部１２の乗降床１１Ｆ，１２Ｆ下には、夫々一対の主スプロケット１４と従スプロケット１５とが軸支されている。一対の主スプロケット１４は、駆動軸１６に固定され、この駆動軸１６は端部を軸受１７によって回転自在に保持されている。この軸受１７は前記側枠５Ａ，５Ｂの縦部材１０に固定され、その垂直投影は側枠５Ａ，５Ｂの幅ｈ（図３）内にある。
【００１１】
前記主スプロケット１４と従スプロケット１５には無端状の踏段チェーン１８が巻掛けられている。この踏段チェーン１８に複数の踏段１９が連結される。これら踏段１９は、前記主枠４内に敷設されたガイドレール上を走行する前輪２０と後輪２１を備えている。そして、前記前輪２０を支持し前記踏段１９の幅方向両端から突出させた前輪軸２２を前記踏段チェーン１８に連結することで、踏段１９と踏段チェーン１８とを連結しているのである。
【００１２】
また、前記側枠５Ａ，５Ｂには、夫々欄干２３が立設されており、この欄干２３の周縁には移動手摺２４が案内されている。この移動手摺２４は、欄干２３の内部に設置された手摺駆動装置２５によって駆動される。この手摺駆動装置２５は、前記一方側の主スプロケット１４の反踏段１９側に設けられた手摺駆動スプロケット２６に巻掛けた動力伝達チェーン２７を、前記左右の側枠５Ａ，５Ｂに軸支された中間軸２８の第１アイドラスプロケット２９に巻掛け、さらに、中間軸２８の両端側に設けた二つの第２アイドラスプロケット３０に巻掛けた手摺駆動チェーン３１を、前記手摺駆動装置２５の構成部品である駆動ローラに設けたスプロケットに巻掛けて動力を得ている。ここで、前記手摺駆動スプロケット２６は、前記主スプロケット１４の外周から軸方向に突出した前輪２０と干渉しないように、前記主スプロケット１４の半径よりも小径をなしている。
【００１３】
一方、前記駆動軸１６の一端側で、前記手摺駆動スプロケット２４の反踏段１９側には駆動輪としての駆動スプロケット３２が固定されている。この駆動スプロケット３２は皿状に形成され、駆動軸１６への固定部は前記主スプロケット１４よりも反踏段１９側にあり、外周部に形成された歯部は、前記主枠４の側枠５Ａの幅ｈ内に臨ませて平面から見て駆動スプロケット３２の歯部と側枠５Ａとが重なるように、いい代えれば、駆動スプロケット３２の歯部と側枠５Ａとは互いの鉛直投影が重なるように配置されている。このため、駆動スプロケット３２の歯部と前記軸受１７と前記主枠４の側枠５Ａの３者も、互いの鉛直投影が互いに重なり、前記側枠５Ａの幅ｈ内に位置することになる。
【００１４】
そして、前記駆動スプロケット３２の歯部には動力伝達チェーン３３が巻掛けられ、この動力伝達チェーン３３は前記踏段１９の往復通路の外側に設置された駆動機械装置３４のスプロケット３５に巻掛けられている。駆動機械装置３４は電動機３６と減速機３７と制動機３８等からなるが、減速機３７は必ずしも必要とするものではない。
【００１５】
上記のように構成したので、本来なら駆動スプロケット３２の歯部が、軸受１７と一方の主スプロケット１４との間に位置していたことにより必要としていたスペース及び主枠４や欄干２３の設置バランスを考慮して反駆動スプロケット３２側にも必要としていた同等のスペースを不要とすることができ、その結果、主枠４の全幅Ｗｆを縮小することができ、エスカレーター１の設置幅寸法Ｗｏを狭めることができる。
【００１６】
加えて、左右の手摺駆動装置２５を駆動軸１６に夫々二つの手摺駆動スプロケットを設けて駆動していたのを一つの手摺駆動スプロケット２６から中間軸２８を介して駆動するようにしたので、手摺駆動スプロケット２６が一つになった分、駆動軸１６を短縮することができ、その結果、主枠４の全幅Ｗｆを縮小することができ、エスカレーター１の設置幅寸法Ｗｏを狭めることができる。
【００１７】
上記のような幅狭のエスカレーター１を建築物の狭域の場所、例えば駅舎の既設階段等に設置する場合、通常、図２，図３に示すように、階段３９の一方の壁４０側に寄せてエスカレーター１を設置し、エスカレーター１の反壁４０側の欄干２３を階段３９とエスカレーター１との仕切壁としている。このように設置幅寸法Ｗｏのエスカレーター１を階段３９に設置した場合、階段３９の歩行者に利用される幅寸法は狭くなるが、エスカレーター１の設置幅寸法Ｗｏは、上述のように狭幅となっているので、階段３９の利用幅寸法の減幅を必要最小限にすることができる。
【００１８】
次に、本発明による第２の実施の形態を図６〜図８に基づいて説明する。ここに示す第２の実施の形態は、駆動輪として第１の実施の形態に示すような駆動スプロケット３２及び駆動機械装置３４を用いず、これらの代わりに、電動機５０を駆動機械装置としたのである。尚、図６〜図８において図１〜図５と同符号は同等の部品を示すので、再度の説明は省略し、図１〜図５と異なる構成についてのみ説明する。具体的に説明すると、手摺駆動スプロケット２６とは反対側の駆動軸１６端に、駆動機械装置である電動機５０を設置したのである。この電動機５０は回転子５１と固定子５２とフレーム５３を有し、回転子５１は皿状に形成され、外径側を側枠５Ａ側に変位させ、内径側を駆動軸１６に固定している。前記固定子５２はフレーム５３に固定され、このフレーム５３は前記側枠５Ａに固定されている。そして、電動機５０全体として、軸方向長さが電動機直径に対して短い平坦構造となって、所謂薄型電動機を構成している。この電動機５０を前記主枠４の側枠５Ａと重なるように、いい代えれば、電動機５０と側枠５Ａとが互いの鉛直投影が重なるように配置している。このように構成することにより、電動機５０と前記軸受１７と前記主枠４の側枠５Ａの３者も、互いの鉛直投影が互いに重なることになる。
【００１９】
上記のように構成したので、本来なら電動機５０を側枠５Ａと主スプロケット１４との間に設置していたことにより必要としていたスペースを、電動機５０の鉛直投影を側枠５Ａに重ねることで低減することができ、また、左右の手摺駆動装置２５は、第１の実施の形態と同じように、一つの手摺駆動スプロケット２６から中間軸２８を介して駆動するようにしたので、手摺駆動スプロケット２６が一つになった分、駆動軸１６を短縮することができ、その結果、主枠４の全幅Ｗｆを縮小することができ、エスカレーター１の設置幅寸法Ｗｏを狭めることができる。
【００２０】
また、電動機５０は、駆動軸１６と同心的で踏段１９の方向転換径よりも小さい直径を有するので、前記踏段１９の方向転換部における移動軌跡より長手方向外側に電動機を設置する構成に比べて、主枠４の長さを短縮することができる。前記回転子５１に対向する薄型の電動機５０の固定子５２は、主枠４を構成する一方側の側枠５Ｂに固定され、電動機５０と側枠５Ｂの鉛直投影が重なるように、側枠５Ｂの幅ｈ内に配置されている。
【００２１】
ところで上記第２の実施の形態は、踏段１９の幅方向の両側から突出させた前輪軸２２に前輪２０を軸支している。このような構成においては、踏段チェーン１８が主スプロケット１４に巻掛けられた状態で、前輪２０が電動機５０の回転子５１の外周部に位置することになる。そのために、電動機５０の外径をそれ以上大きくすることはできない。しかし、エスカレーター１は設置階高や機種によって電動機の容量を変える必要があるので、外径を大きくできない場合には、軸方向の寸法を伸ばさねばならない。
【００２２】
そこで、図９に示す第３の実施の形態は、電動機５０の外径寸法を踏段１９の前輪２０に左右されずに変えることができる要に構成したのである。即ち、第３の実施の形態は、踏段チェーンを踏段前輪として機能するローラ５６を備えたローラ付き踏段チェーン５５としたのである。そして、踏段１９とローラ付き踏段チェーン５５との連結は、踏段１９の幅方向両側から突出させた連結軸５７によって行うのである。尚、図９において、図１〜図８と同一符号は同等の部品を示すので、再度の説明は省略する。
【００２３】
このようなローラ付き踏段チェーン５５を用いることにより、ローラ付き踏段チェーン５５が主スプロケット１４上に巻掛けられて通過する際に、ローラ５６も主スプロケット１４の外周を通過するので、主スプロケット１４から電動機５０側に張出す部品はなくなり、その結果、電動機５０の外径を必要とする容量によって破線で示すように大径とすることができるのである。
【００２４】
上記第３の実施の形態によれば、前記第１の実施の形態と同じ効果を奏し得ると共に、主枠４の幅を変えることなく電動機５０の容量を容易に変更することができる。
【００２５】
さらに、図１０に示す第４の実施の形態は、第１の実施の形態に示す踏段チェーン１８に代えて前輪の機能を有するローラ５６を備えたローラ付き踏段チェーン５５を用いたものである。このローラ付き踏段チェーン５５と踏段との連結は、第３に実施の形態と同じように、踏段１９の幅方向両側から突出させた連結軸５７によって行っている。その他の駆動スプロケット３２の駆動機構や手摺駆動装置を含む構成は、第１の実施の形態の構成と同じである。
【００２６】
上記のように構成したので、第１の実施の形態において、駆動スプロケット３２と主スプロケット１４との間に必要としていた踏段１９の前輪２０用のスペースを不要とすることができるので、主スプロケット１４と駆動スプロケット２７との隙間を狭くすることができ、その分、駆動軸１６の軸長を短縮させて主枠４の全幅Ｗｆをさらに縮小することができる。その他は第１の実施の形態と同じ効果を奏する。
【００２７】
尚、以上の各実施の形態は、乗客コンベアとしてエスカレーターを説明したが、エスカレーターに限らず、踏板間に段差が生じない電動道路にも適用することができる。この場合、各請求項の踏段を踏板と読替えることが必要である。さらに、狭域な場所の一例として駅舎の既設階段について説明したが、駅舎用既設階段に限らず、一般の建築物及び平坦通路に省スペース乗客コンベアとして使用することができる。
【００２８】
【発明の効果】
以上説明したように本発明によれば、設置幅寸法を大幅に低減できる乗客コンベアを得ることができる。
【図面の簡単な説明】
【図１】本発明による第１の実施の形態を示すエスカレーターの概略側面図。
【図２】図１の上階付近の階段への設置状態を示す概略側面図。
【図３】図１のII−II線に沿う縦断拡大図。
【図４】図１のエスカレーターの上階付近内部を示す側面図。
【図５】図４の主枠内の平面図。
【図６】本発明による第２の実施の形態を示すエスカレーターの図３相当図。
【図７】図６の上階付近の主枠内を示す平面図。
【図８】図７の側面図。
【図９】本発明による第３の実施の形態を示すエスカレーターの図３相当図。
【図１０】本発明による第４の実施の形態を示すエスカレーターの図３相当図。
【符号の説明】
１…エスカレーター、４…主枠、５Ａ，５Ｂ…側枠、１４…主スプロケット、１６…駆動軸、１７…軸受、１８…踏段チェーン、１９…踏段、２５…手摺駆動装置、２６…手摺駆動スプロケット、２８…中間軸、３２…駆動スプロケット、５０…電動機、５５…ローラ付き踏段チェーン。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a passenger conveyor device such as an escalator or an electric road, and more particularly to a passenger conveyor device suitable for being installed in a narrow area.
[0002]
[Prior art]
Conventionally, in order to reduce the installation area of the passenger conveyor device, an electric motor is installed around the drive shaft for driving the steps to directly drive the drive shaft (for example, Japanese Patent Laid-Open No. 56-108683, Special Table 2000-505406). In other words, a configuration has been proposed in which a step chain is directly driven (for example, JP-A-55-40185) between forward steps.
[0003]
[Problems to be solved by the invention]
In the above conventional technology, a drive machine device such as an electric motor can be installed around the drive shaft or between the forward path and the return path of the step, so a new space for installing the drive machine is secured in the main frame that supports the components of the passenger conveyor. It is not necessary to reduce the installation area by shortening the overall length of the main frame.
[0004]
However, in the above configuration, no consideration is given to the mechanism for driving the moving handrail, and when further reduction of the installation area is required, further reduction of the installation area is practically difficult.
[0005]
An object of the present invention is to provide a passenger conveyor capable of sufficiently reducing the installation area.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention forms a driving wheel in a dish shape , arranges the outer peripheral portion of the driving wheel and the side frame constituting the main frame so that their vertical projections overlap each other, and the driving A handrail drive sprocket is fixed to the side of the main sprocket on the side opposite to the main sprocket located on the opposite side of the wheel, and a pair of handrail drive devices are driven from the handrail drive sprocket via an intermediate shaft. It was configured.
[0007]
By arranging the outer periphery of the drive wheel and the side frame of the main frame so that their vertical projections overlap each other as in the above configuration, there is no gap provided between the outer periphery of the drive wheel and the side frame. Accordingly, the side frame can be moved closer to the drive wheel, and as a result, the width of the main frame can be reduced. Further, since the driving force of the moving handrail is applied via the intermediate shaft from the opposite side of the step away from the driving wheel, the handrail driving sprocket conventionally provided between the main sprocket and the driving wheel is unnecessary. The width dimension can be further reduced accordingly.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described below with reference to FIGS. In general, the escalator 1 is configured based on a main frame 4 installed across an upper floor 2 and a lower floor 3 of a building. As shown in FIG. 3, the main frame 4 includes a pair of left and right side frames 5A and 5B, a bottom plate 6 and a cross beam 7 that connect the left and right side frames 5A and 5B, and the side frames 5A and 5B. Is composed of an upper chord member 8 extending in the longitudinal direction of the escalator, a lower chord member 9, and a vertical member 10 connecting the upper chord member 8 and the lower chord member 9.
[0009]
An upper horizontal part 11 serving as an upper machine room is formed on the upper floor 2 side of the main frame 4 having the above configuration, and a lower horizontal part 12 serving as a lower machine room is formed on the lower floor 3 side. The lower horizontal part 12 is connected by an inclined part 13. In general, the upper horizontal portion 11 and the lower horizontal portion 12 are closed at the upper portions by boarding / exiting floors 11F and 12F for passengers to get on and off.
[0010]
A pair of main sprockets 14 and sub sprockets 15 are pivotally supported below the landing floors 11F and 12F of the upper horizontal portion 11 and the lower horizontal portion 12 of the main frame 4 thus configured. The pair of main sprockets 14 are fixed to a drive shaft 16, and the drive shaft 16 is rotatably held at its ends by a bearing 17. The bearing 17 is fixed to the vertical member 10 of the side frames 5A and 5B, and its vertical projection is within the width h (FIG. 3) of the side frames 5A and 5B.
[0011]
An endless step chain 18 is wound around the main sprocket 14 and the sub sprocket 15. A plurality of steps 19 are connected to the step chain 18. These steps 19 include a front wheel 20 and a rear wheel 21 that run on guide rails laid in the main frame 4. Then, the front wheel shaft 22 that supports the front wheel 20 and protrudes from both ends in the width direction of the step 19 is connected to the step chain 18, thereby connecting the step 19 and the step chain 18.
[0012]
Further, a balustrade 23 is erected on each of the side frames 5A and 5B, and a moving handrail 24 is guided to the periphery of the balustrade 23. The moving handrail 24 is driven by a handrail driving device 25 installed inside the balustrade 23. In this handrail drive device 25, a power transmission chain 27 wound around a handrail drive sprocket 26 provided on the opposite side of the main sprocket 14 on the one side is pivotally supported on the left and right side frames 5A and 5B. A handrail drive chain 31 wound around the first idler sprocket 29 of the intermediate shaft 28 and further wound around two second idler sprockets 30 provided at both ends of the intermediate shaft 28 is a component of the handrail drive device 25. It is wound on a sprocket provided on a certain drive roller to obtain power. Here, the handrail drive sprocket 26 has a smaller diameter than the radius of the main sprocket 14 so as not to interfere with the front wheel 20 protruding in the axial direction from the outer periphery of the main sprocket 14.
[0013]
On the other hand, on one end side of the drive shaft 16, a drive sprocket 32 as a drive wheel is fixed to the counter-step 19 side of the handrail drive sprocket 24. The drive sprocket 32 is formed in a dish shape, the fixed portion to the drive shaft 16 is on the counter-step 19 side with respect to the main sprocket 14, and the tooth portion formed on the outer peripheral portion is the side frame 5A of the main frame 4. In other words, the tooth portion of the drive sprocket 32 and the side frame 5A overlap each other so that the tooth portion of the drive sprocket 32 and the side frame 5A overlap each other when viewed from above. Are arranged as follows. For this reason, the toothed portion of the drive sprocket 32, the bearing 17 and the side frame 5A of the main frame 4 are also positioned within the width h of the side frame 5A with their vertical projections overlapping each other.
[0014]
Then, a power transmission chain 33 is wound around the tooth portion of the drive sprocket 32, and this power transmission chain 33 is wound around a sprocket 35 of a drive machine device 34 installed outside the reciprocating passage of the step 19. Yes. The drive machine device 34 includes an electric motor 36, a speed reducer 37, a brake 38, and the like, but the speed reducer 37 is not necessarily required.
[0015]
Since it is configured as described above, the space necessary for the tooth portion of the drive sprocket 32 being originally located between the bearing 17 and one of the main sprockets 14 and the installation balance of the main frame 4 and the balustrade 23 In consideration of this, it is possible to eliminate the equivalent space required on the counter-drive sprocket 32 side, and as a result, the overall width Wf of the main frame 4 can be reduced, and the installation width dimension Wo of the escalator 1 can be reduced. be able to.
[0016]
In addition, since the left and right handrail drive devices 25 are driven by providing two handrail drive sprockets on the drive shaft 16 respectively, they are driven from one handrail drive sprocket 26 via the intermediate shaft 28. The drive shaft 16 can be shortened by the amount of the drive sprocket 26, and as a result, the overall width Wf of the main frame 4 can be reduced and the installation width dimension Wo of the escalator 1 can be reduced.
[0017]
When the escalator 1 having a narrow width as described above is installed in a narrow area of a building, for example, an existing staircase in a station building, usually, as shown in FIGS. The escalator 1 is installed, and the balustrade 23 on the side opposite to the escalator 1 is used as a partition wall between the stairs 39 and the escalator 1. In this way, when the escalator 1 having the installation width dimension Wo is installed on the stairs 39, the width dimension used by the pedestrian on the stairs 39 is narrow, but the installation width dimension Wo of the escalator 1 is narrow as described above. Therefore, the reduction in the width of the use width of the staircase 39 can be minimized.
[0018]
Next, a second embodiment according to the present invention will be described with reference to FIGS. In the second embodiment shown here, the drive sprocket 32 and the drive machine device 34 as shown in the first embodiment are not used as drive wheels, and instead of these, the electric motor 50 is a drive machine device. is there. 6 to 8, the same reference numerals as those in FIGS. 1 to 5 denote the same components, so that the repetitive description is omitted and only configurations different from those in FIGS. 1 to 5 will be described. More specifically, an electric motor 50, which is a drive machine device, is installed at the end of the drive shaft 16 opposite to the handrail drive sprocket 26. The electric motor 50 includes a rotor 51, a stator 52, and a frame 53. The rotor 51 is formed in a dish shape, and the outer diameter side is displaced to the side frame 5A side, and the inner diameter side is fixed to the drive shaft 16. Yes. The stator 52 is fixed to a frame 53, and the frame 53 is fixed to the side frame 5A. As a whole, the electric motor 50 has a flat structure in which the axial length is short with respect to the diameter of the electric motor, thereby forming a so-called thin electric motor. In other words, the electric motor 50 and the side frame 5A are arranged so that their vertical projections overlap with each other so as to overlap the side frame 5A of the main frame 4. By configuring in this way, the three vertical projections of the electric motor 50, the bearing 17, and the side frame 5A of the main frame 4 also overlap each other.
[0019]
Since it was configured as described above, the space originally required by installing the electric motor 50 between the side frame 5A and the main sprocket 14 is reduced by overlapping the vertical projection of the electric motor 50 on the side frame 5A. Moreover, since the left and right handrail drive devices 25 are driven from one handrail drive sprocket 26 via the intermediate shaft 28 as in the first embodiment, the handrail drive sprocket 26 As a result, the drive shaft 16 can be shortened, and as a result, the overall width Wf of the main frame 4 can be reduced, and the installation width dimension Wo of the escalator 1 can be reduced.
[0020]
Further, since the electric motor 50 is concentric with the drive shaft 16 and has a diameter smaller than the direction change diameter of the step 19, compared with a configuration in which the electric motor is installed on the outer side in the longitudinal direction from the movement locus in the direction change portion of the step 19. The length of the main frame 4 can be shortened. The stator 52 of the thin electric motor 50 that faces the rotor 51 is fixed to one side frame 5B that constitutes the main frame 4, and the vertical frame projection of the electric motor 50 and the side frame 5B overlaps. Are arranged within the width h of the.
[0021]
Incidentally, in the second embodiment, the front wheel 20 is pivotally supported on the front wheel shaft 22 that protrudes from both sides of the step 19 in the width direction. In such a configuration, the front wheel 20 is positioned on the outer peripheral portion of the rotor 51 of the electric motor 50 in a state where the step chain 18 is wound around the main sprocket 14. Therefore, the outer diameter of the electric motor 50 cannot be increased further. However, since it is necessary for the escalator 1 to change the capacity of the electric motor depending on the installation floor height and model, if the outer diameter cannot be increased, the dimension in the axial direction must be increased.
[0022]
Therefore, the third embodiment shown in FIG. 9 is configured to be able to change the outer diameter dimension of the electric motor 50 without being influenced by the front wheel 20 of the step 19. That is, in the third embodiment, the step chain 55 is a step chain 55 with a roller provided with a roller 56 that functions as a step front wheel. The step 19 and the step chain 55 with roller are connected by connecting shafts 57 protruding from both sides of the step 19 in the width direction. In FIG. 9, the same reference numerals as those in FIGS.
[0023]
By using such a step chain 55 with a roller, when the step chain 55 with a roller is wound around the main sprocket 14 and passes, the roller 56 also passes the outer periphery of the main sprocket 14. There are no parts projecting to the side of the electric motor 50, and as a result, the outer diameter of the electric motor 50 can be increased as shown by the broken line depending on the required capacity.
[0024]
According to the third embodiment, the same effects as those of the first embodiment can be obtained, and the capacity of the electric motor 50 can be easily changed without changing the width of the main frame 4.
[0025]
Further, the fourth embodiment shown in FIG. 10 uses a step chain 55 with a roller provided with a roller 56 having a front wheel function instead of the step chain 18 shown in the first embodiment. Thirdly, the step chain 55 with rollers and the step are connected by connecting shafts 57 protruding from both sides in the width direction of the step 19 as in the embodiment. The structure including the drive mechanism and handrail drive device of other drive sprockets 32 is the same as the structure of the first embodiment.
[0026]
Since it is configured as described above, the space for the front wheel 20 of the step 19 required between the drive sprocket 32 and the main sprocket 14 in the first embodiment can be eliminated. And the drive sprocket 27 can be narrowed, and accordingly, the overall length Wf of the main frame 4 can be further reduced by shortening the axial length of the drive shaft 16. The other effects are the same as those of the first embodiment.
[0027]
In addition, although the above each embodiment demonstrated the escalator as a passenger conveyor, it is applicable not only to an escalator but the electric road which a level | step difference does not produce between treads. In this case, it is necessary to replace the step in each claim with a tread. Furthermore, although the existing staircase of the station building has been described as an example of a narrow area, it is not limited to the existing staircase for the station building, and can be used as a space-saving passenger conveyor in general buildings and flat passages.
[0028]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a passenger conveyor that can greatly reduce the installation width dimension.
[Brief description of the drawings]
FIG. 1 is a schematic side view of an escalator showing a first embodiment according to the present invention.
FIG. 2 is a schematic side view showing an installation state on a staircase near the upper floor of FIG. 1;
3 is an enlarged longitudinal sectional view taken along line II-II in FIG.
4 is a side view showing the inside of the vicinity of the upper floor of the escalator in FIG. 1. FIG.
5 is a plan view in the main frame of FIG. 4;
FIG. 6 is a view corresponding to FIG. 3 of an escalator showing a second embodiment according to the present invention.
7 is a plan view showing the inside of the main frame near the upper floor of FIG. 6. FIG.
8 is a side view of FIG. 7. FIG.
FIG. 9 is a view corresponding to FIG. 3 of an escalator showing a third embodiment according to the present invention.
FIG. 10 is a view corresponding to FIG. 3 of an escalator showing a fourth embodiment according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Escalator, 4 ... Main frame, 5A, 5B ... Side frame, 14 ... Main sprocket, 16 ... Drive shaft, 17 ... Bearing, 18 ... Step chain, 19 ... Step, 25 ... Handrail drive device, 26 ... Handrail drive sprocket 28 ... Intermediate shaft, 32 ... Drive sprocket, 50 ... Electric motor, 55 ... Step chain with roller.

Claims

A pair of endless step chains that are driven by connecting a plurality of treads on both sides in the width direction, a pair of main sprockets and a pair of sub sprockets that wrap the step chains near the landing floor of both entrances and exits, and the main A drive wheel provided on a drive shaft to which a sprocket is fixed, a drive mechanical device that transmits a rotational force to the drive wheel, a pair of balustrades that are erected along both sides in the moving direction of the step, and a peripheral edge of these balustrades A pair of moving handrails guided by the driving shaft, a pair of handrail driving devices that obtain power from the drive shaft and drive the pair of moving handrails, and a main frame that supports these components and has a pair of side frames. In the passenger conveyor, the driving wheel is formed in a dish shape, the outer peripheral portion of the driving wheel and the side frame are arranged so that their vertical projections overlap each other, and the main wheel is located on the opposite side of the driving wheel. Sprocket counter tread A side to secure the handrail driving sprocket to the side of the main sprocket, so that the handrail of the intermediate shaft is provided which is driven by power obtained from the drive sprocket, transmits power of the intermediate shaft to the pair of handrail driving device A passenger conveyor, characterized in that it is configured.

A pair of endless step chains that are driven by connecting a plurality of treads on both sides in the width direction, a pair of main sprockets and a pair of sub sprockets that wrap the step chains near the landing floor of both entrances and exits, and the main A drive wheel provided on a drive shaft to which a sprocket is fixed, a drive mechanical device that transmits a rotational force to the drive wheel, a pair of balustrades that are erected along both sides in the moving direction of the step, and a peripheral edge of these balustrades A pair of moving handrails guided by the driving shaft, a pair of handrail driving devices that obtain power from the drive shaft and drive the pair of moving handrails, and a main frame that supports these components and has a pair of side frames. In the passenger conveyor, the driving wheel is formed in a dish shape, the bearing supporting the end of the driving shaft and the outer periphery of the driving wheel are arranged so that their vertical projections overlap each other, and the driving wheel Is on the opposite side The handrail drive sprocket fixed to the side of the main sprocket a counter footstep side of the main sprocket, an intermediate shaft driven provided to obtain power from the handrail driving sprocket, the pair of handrail drive power of the intermediate shaft A passenger conveyor, characterized in that it is configured to transmit to a device.

A pair of endless step chains that are driven by connecting a plurality of treads on both sides in the width direction, a pair of main sprockets and a pair of sub sprockets that wrap the step chains near the landing floor of both entrances and exits, and the main A drive wheel provided on a drive shaft to which a sprocket is fixed, a drive mechanical device that transmits a rotational force to the drive wheel, a pair of balustrades that are erected along both sides in the moving direction of the step, and a peripheral edge of these balustrades A pair of moving handrails guided by the driving shaft, a pair of handrail driving devices that obtain power from the drive shaft and drive the pair of moving handrails, and a main frame that supports these components and has a pair of side frames. In the passenger conveyor, the driving wheel is formed in a dish shape, a bearing that supports the driving shaft, an outer peripheral portion of the driving wheel, and the side frame are arranged so that their vertical projections overlap each other, and the driving wheel On the opposite side A counter footstep side of the main sprocket this side of the main sprocket fixing the handrail driving sprocket, an intermediate shaft driven provided to obtain power from the handrail driving sprocket, handrail power of the intermediate shaft of the pair of A passenger conveyor configured to transmit to a drive device.

A pair of endless step chains that are driven by connecting a plurality of treads on both sides in the width direction, a pair of main sprockets and a pair of sub sprockets that wrap the step chains near the landing floor of both entrances and exits, and the main A drive wheel provided on a drive shaft to which a sprocket is fixed, a drive mechanical device that transmits a rotational force to the drive wheel, a pair of balustrades that are erected along both sides in the moving direction of the step, and a peripheral edge of these balustrades A pair of moving handrails guided by the driving shaft, a pair of handrail driving devices that obtain power from the drive shaft and drive the pair of moving handrails, and a main frame that supports these components and has a pair of side frames. In the passenger conveyor, the drive wheel is formed in a dish shape, the drive wheel is positioned at the end of the drive shaft, the drive wheel and the side frame are arranged so that their vertical projections overlap each other, and The drive wheel and The handrail drive sprocket fixed to the side of the main sprocket this a counter footstep side of the main sprocket located on the opposite side, an intermediate shaft is provided which is driven by power obtained from the handrail driving sprocket, the power of the intermediate shaft A passenger conveyor configured to transmit to the pair of handrail drive devices.

The passenger conveyor according to any one of claims 1 to 4, wherein the drive wheel is a drive sprocket for winding a chain that transmits power of the drive machine device.

2. The drive machine device according to claim 1, wherein the drive machine device is a thin motor having a diameter larger than an axial length, and the drive wheel is a rotor of the motor. Passenger conveyor in any one of -4.

The passenger conveyor according to any one of claims 1 to 6, wherein the step chain is a step chain with a roller including a roller having a function of a front wheel of the step.