JP2008222341A - Passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a passenger conveyor reducible in the height dimension of a frame body by reducing the radius of gyration of treads without forming the structure of treads including wheels, as a special structure. <P>SOLUTION: The moving locus 51B of the wheel on the rear side in a traveling direction on the return path side out of the moving loci of wheels on the rear side on the return path side and forward path side installed almost in parallel before reaching a direction changing part of the tread, is brought close to the moving locus 51A side of the wheel on the rear side in the traveling direction on the forward path side, and a space G3 between the moving locus 51A and moving locus 51B is made narrower than the diameter D of a direction changing locus of the wheel on the rear side in the traveling direction at the direction changing part 51R. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a passenger conveyor such as an escalator in which a plurality of stepboards for conveying passengers form a step in an inclined section and an electric road or the like in which no step is generated in an adjacent stepboard, and more particularly to a passenger conveyor suitable for installation in a staircase or a passage. .

  Generally, when installing a passenger conveyor in a staircase or a passage, it is desired to make the height of the frame as small as possible in order to minimize the amount of excavation of the staircase or the passage. Therefore, for example, a passenger conveyor as shown in Patent Document 1 has already been proposed. In other words, the height dimension of the frame is to be reduced by reducing the turning radius of the tread on the forward side and the return side.

JP 2001-192195 A

  In order to reduce the turning radius of the tread, the above technique has a problem in that the tread structure must have a special shape by narrowing the distance between the wheels positioned in the front and rear directions of the tread.

  An object of the present invention is to provide a passenger conveyor capable of reducing the height of a frame by reducing the turning radius of the tread without making the tread including the wheels a special structure.

  In order to achieve the above object, the present invention provides a guide rail that is installed substantially in parallel vertically below the getting-on / off floor, and guides the rear wheel on the return path between the adjacent treads in the direction change section. In order to ensure a safety gap, the guide rail is guided closer to the rear wheel on the forward path side.

  By constructing as described above, the structure of the tread including the front wheels and the rear wheels is not a special structure, and the trajectory of the tread on the return path immediately before the direction change section is brought closer to the movement trajectory of the tread on the outward path. Moreover, in the direction changing portion, the direction can be changed without interference between adjacent treads, so that the height dimension of the frame can be reduced accordingly.

  Hereinafter, a first embodiment of a passenger conveyor according to the present invention will be described based on an escalator shown in FIGS.

  The escalator 1 generally includes a frame body 4 that is installed between the upper floor 2 and the lower floor 3, a plurality of steps 5 that circulate in the frame body 4, and the frame body 4. It comprises a pair of left and right balustrades 6 erected along the running direction of the step 5 on both sides in the width direction, and a moving handrail 7 that is guided by the periphery of the balustrade 6 and moves in synchronization with the moving speed of the step 5. ing.

  The frame 4 includes an upper machine chamber section 4A that forms an upper machine chamber 10 in which a drive device 8 and a drive sprocket 9 are installed, and a lower machine chamber 12 in which a driven sprocket 11 and a step cleaning device (not shown) are installed. A machine room section 4B and an intermediate section 4C that is located between the upper machine room section 4A and the lower machine room section 4B and that forms the forward side and the return side of the step 5 are formed in the longitudinal direction. Further, when the cross section of the frame body 4 is viewed, a pair of side frames 13 on the left and right sides, a horizontal beam 14 connecting the left and right side frames 13, and a lower end portion of the left and right side frames 13 are closed, and an oil pan 15A And a bottom plate 15 provided with. The side frame 13 includes an upper chord member 13A extending in the longitudinal direction of the frame body 4, a lower chord member 13B positioned at a distance from the upper chord member 13A, and a vertical member 13C connecting the upper chord member 13A and the lower chord member 13B. Have The upper machine room section 4A and the lower machine room section 4B are provided with boarding floors 16A and 16B that are flush with the upper floor 2 and the lower floor 3, respectively.

  The step 5 has a step board on which a passenger rides, and pivotally supports the front wheel 5A and the rear wheel 5B in the front-rear direction. Then, the axle of the front wheel 5A is connected by an endless chain 17, the chain 17 is wound around the drive sprocket 9 and the driven sprocket 11, and the drive sprocket 9 is driven by the drive device 8, thereby the step 5 Are circulated endlessly.

  Further, the front wheel 5A and the rear wheel 5B of the step 5 include a forward-side front wheel guide rail 18A provided on the forward side, a forward-side rear wheel guide rail 19A, and a return-side front wheel guide rail 18B provided on the return side. It is guided by the return road side rear wheel guide rail 19B so that it can travel smoothly. Each of these guide rails serves as guide means for determining the movement trajectory of the front wheel 5A and the rear wheel 5B. Further, although not shown, the front wheel 5A and the rear wheel 5B are guided inside the upper machine room section 4A and the lower machine room section 4B when the step 5 changes direction from the return side to the forward side. The direction change portion guide rails that determine the turning trajectory are between the forward-side front wheel guide rail 18A and the return-side front wheel guide rail 18B, and between the forward-side rear wheel guide rail 19A and the return-side rear wheel guide rail 19B. Respectively.

  On the forward path side, the forward-path-side front wheel guide rail 18A and the forward-path-side rear wheel guide rail 19A are integrally formed and supported by the transverse beam 14. On the return side, on the other hand, the return side front wheel guide rail 18B and the return side rear wheel guide rail 19B are formed separately and supported by the vertical member 13C via brackets 20A and 20B, respectively.

  Although the escalator 1 is configured by the configuration described above, in the present embodiment, the direction of the step 5 in the machine room (the upper machine room 10 and the lower machine room 12) below the getting-on / off floors 16A and 16B is further changed. The diameters of the sprockets (driving sprocket 9 and driven sprocket 11) installed in the section are reduced. Then, the rotational diameter of the direction changing portion of the rear wheel 5B is set so that a minimum safety clearance that does not interfere with each other when the steps 5 change the direction on the basis of this sprocket is secured. And, the installation interval of the forward-side rear wheel guide rail 19A and the return-side rear wheel guide rail 19B installed almost in parallel in the machine room in accordance with the rotation diameter of the direction changing portion of the rear wheel 5B, in other words, The interval of the movement trajectory of the rear wheel on the forward path side and the return path side is set. As a result, the height dimension H of the frame constituting the machine room was reduced from the position of the two-dot chain line shown in FIG. 2 corresponding to the reduction in the diameter of the sprocket.

  As described above, according to the present embodiment, the structure of the treads (steps 5, 5 a, 5 b) including the wheels (the front wheels 5 </ b> A and the rear wheels 5 </ b> B) is not a special structure, and the upper machine room of the frame body 4. Since the height dimension H of the section 4A and the lower machine room section 4B can be reduced, when the escalator 1 is installed on the stairs or the passage, the excavation amount of the stairs or the passage can be minimized.

  By the way, in the said embodiment, the diameter of the sprocket (the drive sprocket 9 and the driven sprocket 11) is made small, and the height dimension H of the upper machine room section 4A and the lower machine room section 4B of the frame 4 is reduced. . Thus, reducing the diameter of the sprocket naturally reduces the rotation diameter at the direction changing portion of the front wheel 5A of the step 5, and accordingly the rotation diameter at the direction changing portion of the rear wheel 5B of the step 5 is also reduced. Must be small. However, if the rotation diameter of the rear wheel 5B of the step 5 is reduced, the adjacent step 5 interferes without securing the minimum safety clearance when changing the direction, so the rotation diameter of the rear wheel 5B of the step 5 is easily reduced. I can't.

  As a result, it is not possible to sufficiently narrow the installation interval of the forward-side rear wheel guide rail 19 </ b> A and the backward-side rear wheel guide rail 19 </ b> B installed substantially in parallel in the machine room, and the return-side front wheel immediately before the direction change portion. The distance between the guide rail 18B for the return path and the guide rail 19B for the return path side rear wheel is narrower than the guide rail 18A for the forward path side front wheel and the guide rail 19A for the forward path side rear wheel. For this reason, the vertical travel distance between the front wheel 5A and the rear wheel 5B immediately before the direction change on the return path side in the machine room is narrowed, and the step 5b is inclined and moved to the direction change portion. Then, since the inclined lower end of the step 5b protrudes toward the oil pan 15A, the height of the upper machine chamber section 4A and the lower machine chamber section 4B is taken into consideration when securing a safe distance between the inclined lower end of the step 5b and the oil pan 15A. The reduction of the dimension H is slight.

  Therefore, in the present invention, the height dimension Ha of the upper machine room section 4A and the lower machine room section 4B is further reduced by configuring as in the modified example shown in FIGS. The same reference numerals as those in FIGS. 1 to 3 indicate the same components, and thus the description thereof will be omitted.

  In this modification, in the direction changing portion 51R of the step 5, the rotation diameter D of the direction changing locus of the rear wheel 5B that secures the minimum safety clearance that does not interfere with the adjacent step, in other words, a guide rail that is a guide means for the direction changing portion. And the movement locus 51B of the rear wheel 5B of the step 5b on the return path immediately before reaching the direction changing portion 51R approaches the movement locus 51A side of the rear wheel 5B of the step 5a on the outward path side. It was made to. With this configuration, the distance G3 between the movement trajectory 51A and the movement trajectory 51B is narrowed. As a result, the distance G2 between the movement trajectory 50B of the front wheel 5A of the step 5b and the movement trajectory 51B of the rear wheel 5B on the return path is The distance G1 between the movement locus 50A of the front wheel 5A of the step 5a and the movement locus 51A of the rear wheel 5B on the forward path side can be made substantially the same.

  Thus, by making the interval G2 substantially the same as the interval G1, the step board 5b passing through the movement locus 50B of the front wheel 5A of the step 5b and the movement locus 51B of the rear wheel 5B on the return path travels without inclining, Further, the direction changing portion 51R can change the direction without interference of adjacent steps.

  In the section R from the movement locus 51B of the rear wheel 5B to the direction changing portion 51R, a gentle curved guide rail is installed in order to make the rear wheel 5B run smoothly.

  In this way, in this modification, the inclination of the step 5b immediately before reaching the direction changing portion 51R on the return path side can be eliminated, so that the lower end of the inclination protrudes downward in the first embodiment. The height dimension Ha of the upper machine room section 4A and the lower machine room section 4B can be further reduced.

  In the above description, the height dimensions H and Ha of the frame body 4 in the upper machine room section 4A and the lower machine room section 4B have been described. However, the intermediate dimensions of the frame body 4 other than the upper machine chamber section 4A and the lower machine room section 4B. By simultaneously reducing the height dimension of the section 4C, it is possible to obtain the escalator 1 that facilitates installation work by reducing the amount of excavation at the installation site.

  That is, with respect to the height dimension of the intermediate section 4C of the frame 4, as shown in FIG. 3, the concave grooves (recesses) 21 and 22 are formed at positions corresponding to the steps 5 on the return path side of the cross beam 14. The dimension H2 is reduced.

  Specifically, the return-side step 5b travels with the rear wheel 5B at the uppermost position with respect to the outward-step side step 5a, and is therefore closest to the cross beam 14. On the other hand, the cross beam 14 is connected so that the left and right side frames 13 do not fall down, and the load on the forward step 5a passing through the forward rail guide rail 18A and the forward rail guide rail 19A and the load of the passengers. Installed to support. Therefore, the cross beam 14 in the present embodiment has a horizontal member 14A serving as a tipping prevention member having strength for preventing the left and right side frame bodies 13 from tipping over, and has strength to receive the load of the forward step 5a and passengers. A mold member having an L-shaped cross section composed of a vertical member 14B serving as a load receiving member is used. However, in order to ensure the strength sufficient to prevent the side frame 13 from falling, it is not necessary that the cross beam 14 be an L-shaped cross section over the entire length, and the vertical member 14A having a small cross section (a tipping prevention member). ) Is sufficient. Therefore, the portion that supports the step 5a on the outward path side and the passenger load by the cross beam 14 uses an L-shaped cross section made of a horizontal member (falling prevention member) 14A and a vertical member (load receiving member) 14B. Since the vertical member 13C of the side frame 13 is cantilevered and the other parts are only horizontal members (falling prevention members) 14A, the side frame 13 can have sufficient fall prevention strength. The recesses 21 are formed in the vertical member 14B so that the rear wheel 5B approaches the horizontal member 14A with a minimum safety gap C2. Further, by forming the concave groove 21, the vertical member 14B between the left and right concave grooves 21 is cut to form the concave groove 22 so that the step 5b on the return path side does not approach and interfere with the cross beam 14.

By forming the cross beam 14 as described above, the step 5b on the return path side as viewed from the side can be made to travel overlapping the vertical member 14B of the cross beam 14, in other words, a cross section in the travel direction of the step 5b. As a result, the height dimension H2 in the intermediate section 4C of the frame body 4 can be reduced as compared with the conventional height dimension H1. is there. That is, the height dimension H2 of the frame body 4 is a clearance C1 from the top of the frame body 4 to the top of the forward step 5a and a height dimension h1 from the top of the forward step 5a to the top of the cross beam 14. The thickness t of the horizontal member 14A of the horizontal beam 14, the safety gap C2 between the lower portion of the horizontal member 14A and the rear wheel 5B on the return side step 5b, and the step 5b from the top of the rear wheel 5B on the return side step 5b. Is the sum of the height dimension h3 to the lower part of the step, the safety gap C3 between the lower part of the step 5b and the oil pan 15A, and the height dimension h4 of the oil pan 15A and the bottom plate 15. Stated Kaere, dimension H ₀ minutes enters the wheels 5B after the return side of the step 5b the groove 21, i.e., minute dimensions rear wheel 5B has entered H _{0 +} safety clearance C2, the conventional height H1 On the other hand, the height can be reduced to H2.

On the other hand, the height dimension H1 of the conventional escalator that does not form the concave groove 21 is the height C1 from the top of the frame 4 to the step 5a on the outward path and the height from the top of the step 5a on the outward path to the cross beam 14. The height dimension h1, the height dimension h2 of the cross beam 14, the safety gap C2 '(= C2) between the lower part of the cross beam 14 and the rear wheel 5B of the return step 5b, and the rear wheel 5B of the return step 5b. Height dimension h3 ′ (= h3) from the top to the lower part of step 5b, safety gap C3 ′ (= C3) between the lower part of step 5b and oil pan 15A, and height dimension h4 of oil pan 15A and bottom plate 15 ′ (= H4) and the dimension H ₀ + safety gap C2 was higher than in the present embodiment.

  In this way, the height dimension H2 in the intermediate section 4C of the frame 4 can be reduced without making the structure of the step board (steps 5, 5a, 5b) including the front wheel 5A and the rear wheel 5B special, so that the stairs When the escalator 1 is installed in the or the passage, the cutting amount of the stairs and the passage can be minimized.

  By the way, in the said embodiment, although the cross-shaped L-shaped type | mold material integrally molded as the cross beam 14 was used, even if it uses the cross beam 14 like the modification shown in FIG. 6, the same effect can be show | played. The same reference numerals as those in FIGS. 1 and 3 indicate the same components, and detailed description thereof will not be repeated.

  In other words, in this modification, the horizontal beam 14 has a rectangular small cross-section horizontal member 23 that serves as a member that prevents the side frame 13 from overturning, and a rectangular cross-section that serves as a load receiving member that supports the load on the forward path 5a and passengers. The vertical member 24 is integrally connected to a width direction end portion of the horizontal member 23 by a known connecting means such as welding.

  The vertical member 24 has a notch (concave portion) 25 so that the rear wheel 5B on the return path side step 5b approaches the horizontal member 23 with a safety gap. By running the rear wheel 5B on the return path side step 5b in the space formed by the notches 25, the entire return path side step 5b can be brought close to the horizontal member 23. As a result, the frame 4 Thus, the height dimension in the intermediate section 4C can be reduced.

  Thus, in addition to the height dimensions H and Ha of the frame body 4 in the upper machine chamber section 4A and the lower machine chamber section 4B, the height dimension H2 of the intermediate section 4C of the frame body 4 can be reduced. Installation work can be performed more easily.

  By the way, although the said embodiment demonstrated the escalator 1 installed in inclination, this invention is applicable also to the special escalator 26 shown in FIG. In FIG. 7, the same reference numerals as those in FIG.

  That is, the frame body 4 of the escalator 26 is connected to the upper machine room section 4A and the lower machine room section 4B formed on both sides in the longitudinal direction and the upper machine room section 4A, and the forward side and the return side of the step 5 are inclined. The inclined intermediate section 4D is formed, and a horizontal intermediate section 4E formed between the inclined intermediate section 4D and the lower machine room section 4B.

  Also in the escalator 26 formed in this way, the upper machine room section 4A and the lower machine room section 4B are configured as shown in FIG. 2 or FIG. 4 and are along the BB line of the inclined intermediate section 4D. The cross section taken along the line CC of the horizontal intermediate section 4E is configured as shown in FIG. 3 or FIG. 6, and the height of the frame body 4 is reduced.

  Next, a second embodiment according to the present invention will be described with reference to FIGS. Although FIGS. 1-7 shows the escalators 1 and 26 installed in an inclined section as a passenger conveyor, the 2nd Example is the electric road 27 installed in a horizontal section.

  Since the basic configuration of the electric road 27 is the same as that of the escalators 1 and 26, the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  The electric road 27 is installed in parallel to the horizontal sidewalk GL, or is installed in a gently inclined section. The linearly extending frame body 4 is a first machine room at both ends in the longitudinal direction. A first machine room section 4a and a second machine room section 4b forming 10A and a second machine room 12A, and an intermediate section 4c formed between the first machine room section 4a and the second machine room section 4b; It consists of In such a frame body 4, the forward-side wheel guide rail 28 </ b> A and the return-side wheel guide rail 28 </ b> B are supported by the side frame 13 via the cross beam 14 and the bracket 20.

  On the other hand, a plurality of treads 29 (29a, 29b) are connected to an endless chain 17 wound around the drive sprocket 9 and the driven sprocket 11 driven by the drive device 8. A pair of left and right wheels 30 (front wheels and rear wheels) are pivotally supported on each tread plate 29 in the forward and backward direction of travel, and each wheel 30 is connected to the forward wheel guide rail 28A and the return wheel guide rail 28B. Run with guidance.

  Also in the electric road 27 comprised as mentioned above, the 1st machine room area 4a and the 2nd machine room area 4b are comprised as shown in FIG.2 and FIG.4. In the intermediate section 4c, a concave groove (concave portion) 31 is formed in the vertical member 14B of the cross beam 14 facing the return side tread plate 29b, and the wheel 30 of the return side tread plate 29b faces the concave groove 31. Thus, the return side tread 29b can be brought closer to the forward side tread 29a. As a result, the height of the side frame 13, in other words, the height of the first machine room section 4a and the second machine room section 4b is increased. In addition to the height dimensions H and Ha, the height dimension of the intermediate section 4c of the frame body 4 can be reduced.

  Accordingly, as in the first embodiment, the height of the intermediate section 4c of the frame body 4 can be reduced without making the structure of the tread plate 29 including the wheels 30 special, so that the existing passages can be reduced. In the case where the electric road 27 is installed, the amount of excavation in the existing passage can be minimized.

  Although the electric road 27 according to the second embodiment shown in FIG. 8 is an example installed on the horizontal sidewalk GL, the present invention can be applied even if installed on a sidewalk with a gentle slope. Not too long.

1 is a partially broken schematic side view of an escalator showing a first embodiment of a passenger conveyor according to the present invention. The enlarged view of the lower machine room area of FIG. The expanded sectional view which follows the AA line of FIG. The fracture | rupture schematic side view which shows the modification of FIG. Schematic which shows the movement locus | trajectory of the front wheel and rear wheel of the step in FIG. The longitudinal cross-sectional view which shows the modification of FIG. The partially broken schematic side view which shows the example of application of the passenger conveyor by this invention. The partially broken schematic side view of the electrically-driven road which shows 2nd Embodiment of the passenger conveyor by this invention. The expanded sectional view which follows the DD line | wire of FIG.

Explanation of symbols

  1, 26 ... Escalator, 2 ... Upper floor, 3 ... Lower floor, 4 ... Frame, 4A ... Upper machine room section, 4B ... Lower machine room section, 4C ... Middle section, 4D ... Inclined middle section, 4E ... Horizontal intermediate section, 4a ... first machine room section, 4b ... second machine room section, 4c ... intermediate section, 5 ... step, 5A ... front wheel, 5B ... rear wheel, 6 ... railing, 7 ... moving handrail, 8 ... drive Device: 9 ... Driving sprocket, 10 ... Upper machine room, 11 ... Driven sprocket, 12 ... Lower machine room, 13 ... Side frame, 14 ... Transverse beam, 14A ... Horizontal member, 14B ... Vertical member, 15 ... Bottom plate, 15A ... Oil Pan, 16A, 16 ... Get-on / off floor, 17 ... Chain, 18A ... Outward front wheel guide rail, 18B ... Return side front wheel guide rail, 19A ... Outward rear wheel guide rail, 19B ... Return side rear wheel guide rail 21, 22, 31 ... concave groove, 2 ... Electric road, 28A ... Outward wheel guide rail, 28B ... Return road wheel guide rail, 29, 29a, 29b ... Tread, 30 ... Wheel, 50A, 50B, 51A, 51B ... Movement locus, 51R ... Direction changing part, G1 , G2, G3 ... intervals.

Claims (12)

  A frame having a boarding floor installed on the building structure and formed at the both ends in the longitudinal direction flush with the floor of the building structure, and a plurality of treads connected endlessly in the frame and circulated A passenger conveyor provided with front wheels and rear wheels pivotally supported in front and rear in the direction of travel of the treads, and guide rails that guide the traveling of the front wheels and rear wheels and are supported in the frame; Of the guide rails installed almost parallel to the upper and lower sides, guide rails that guide the rear wheels on the return path side, and rear wheels on the forward path side so that a minimum safety clearance is secured between the adjacent treads in the direction change section. A passenger conveyor characterized in that it is brought closer to a guide rail to be guided.   A frame body installed in a building structure, a plurality of step boards connected endlessly in the frame body, and a front wheel and a rear wheel that are pivotally supported in front and back in the traveling direction of the tread boards; In a passenger conveyor provided with a guide rail that guides the traveling of the rear wheel and is supported in the frame, the trajectory of the rear wheel immediately before the treadle changes the direction from the forward path side to the return path side Passenger conveyor characterized in that it is made to approach the movement trajectory side of the rear wheel on the forward side so that a minimum safety clearance is ensured between the treads.   A frame that is installed in a building structure and has a getting-on / off floor at both ends in the longitudinal direction, a plurality of treads that are connected endlessly within the frame and circulated and supported in front and back in the direction of travel of these treads In a passenger conveyor equipped with front and rear wheels, and guide rails that guide the traveling of the front and rear wheels and are supported in the frame, the position between the adjacent treads at the time of turning to the position where the treads change direction is minimized. Of the movement trajectory of the rear wheel on the forward side and the return side, which forms a direction change trajectory of the rear wheel having a diameter that secures a safety clearance, and is installed substantially vertically below the getting-on / off floor A passenger conveyor, characterized in that a movement trajectory of a rear wheel on a return path is made closer to a movement trajectory side of a rear wheel on the forward path so as to be narrower than a diameter of the direction change trajectory.   The passenger conveyor according to claim 3, wherein a smooth curved locus is formed between the narrowed return path of the rear wheel and the direction change locus.   A frame body installed in a building structure, a plurality of step boards connected endlessly in the frame body, and a front wheel and a rear wheel that are pivotally supported in front and back in the traveling direction of the tread boards; In a passenger conveyor that includes a guide rail that guides the traveling of the rear wheel and is supported in the frame, the rear wheel of the tread plate changes the direction of the direction of the guide rail that changes direction from the outward side to the return side. The rear wheel is formed in a size that ensures a minimum safety clearance between adjacent treads, and the guide rail on the return path side of the rear wheel is narrower than the diameter of the direction changer guide rail. Passenger conveyor characterized in that it is made to approach the guide rail side.   6. The passenger conveyor according to claim 5, wherein a guide rail on the return path side of the narrowed rear wheel and the direction change portion guide rail are connected by a gentle curved guide rail.   A frame having a boarding floor installed on the building structure and formed at the both ends in the longitudinal direction flush with the floor of the building structure, and a plurality of treads connected endlessly in the frame and circulated A passenger conveyor comprising front wheels and rear wheels pivotally supported in front and rear in the direction of travel of the treads, and guide means for guiding the traveling of the front wheels and rear wheels and supported in the frame body; Out of the rear wheel guide means that are installed substantially parallel to the upper and lower sides, the rear wheel guide means on the return side are arranged on the forward side so that a minimum safety clearance is secured between the adjacent treads in the direction changing portion. A passenger conveyor characterized in that it is made to approach the guide means side of the rear wheel.   A frame body installed in a building structure, a plurality of step boards connected endlessly in the frame body, and a front wheel and a rear wheel that are pivotally supported in front and back in the traveling direction of the tread boards; In a passenger conveyor provided with guiding means for guiding the traveling of the rear wheel and supported in the frame, guiding means for guiding the rear wheel on the return side immediately before the tread plate changes direction from the outward side to the return side A passenger conveyor characterized in that it is made to approach the guide means side for guiding the rear wheel on the forward path side so that a minimum safety clearance is secured between the adjacent treads in the direction changing portion.   A frame body installed in a building structure, a plurality of step boards connected endlessly in the frame body, and a front wheel and a rear wheel that are pivotally supported in front and back in the traveling direction of the tread boards; In a passenger conveyor that includes a guide rail that guides the traveling of the rear wheel and is supported in the frame, the rear wheel of the tread plate changes the direction of the direction of the guide rail that changes direction from the outward side to the return side. The guide rail is formed in such a size that a minimum safety clearance is ensured between the adjacent treads, and the guide rails guide the rear wheels on the return path immediately before the treadle changes the direction from the outward path to the return path, and the rear wheels on the forward path side. The guide rail that guides the rear wheel on the return path side is made closer to the guide rail side that guides the rear wheel on the return path side. Was it Passenger conveyor according to claim.   The passenger conveyor according to claim 9, wherein a guide rail that guides a rear wheel on the return path side and the direction changer guide rail are connected by a gentle curved guide rail.   A frame that is installed in a building structure and has machine room sections at both ends in the longitudinal direction and an intermediate section therebetween, a plurality of step boards that are connected endlessly within the frame body, and the front and rear of the treads in the direction of travel In a passenger conveyor comprising a front wheel and a rear wheel pivotally supported by the vehicle, and a guide rail that guides the traveling of the front wheel and the rear wheel and is supported in the frame body, the rear wheel of the tread plate is moved from the outward side to the return side. The diameter of the direction changer guide rail that changes direction is formed so that a minimum safety clearance is ensured between adjacent treads when changing direction, and the rear wheels of the treadle are guided on the return path side in the machine room section. The guide rail is brought closer to the guide rail side for guiding the rear wheel on the forward path side so as to be narrower than the diameter of the direction change portion guide rail, and the stepping plate on the return path side of the transverse beam of the frame in the intermediate section Passenger conveyor forming a recess in a position opposite to, characterized in that said to face a part of the return side of the step board in the recess.   12. The passenger according to claim 11, wherein a guide rail interval for guiding the front wheel and the rear wheel on the return path side of the machine room section is substantially the same as a guide rail interval for guiding the front wheel and the rear wheel on the outward path side. Conveyor.

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