JP5968250B2 - Passenger conveyor stepping device - Google Patents

Description

  The present invention relates to a step device for a passenger conveyor in an escalator, a moving sidewalk, and the like.

  In passenger conveyors such as escalators, the left and right chains are connected with a shaft at regular intervals, the steps are fixed to the shafts, and power is transmitted to the chains via gears. Driven in the down direction). On both sides of the step, skirt guards are erected adjacently in order to prevent passengers from being caught in the power unit, the chain, or the like. When driving the passenger conveyor, it is a problem to ensure the straightness of the step and to keep the gap between the skirt guard and the step end surface constant.

  Patent Document 1 describes an apparatus shown in FIGS. 5 and 6. FIG. 5 is a perspective view showing a part of an escalator, which is a conventional passenger conveyor, cut away. FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5 in the direction of the arrow, and shows the back side of the step. The passenger conveyor travels with a large number of steps 1 connected endlessly, and railings 2 are erected on both sides of the step 1 to protect passengers riding on the step 1. A handrail 3 that moves in the same direction at the same speed as the step 1 is provided in the upper part of the balustrade 2, and a skirt guard 4 is provided in the lower part of the balustrade 2 so as to keep a minute interval on both sides of the step 1. ing. The step 1 moves along the skirt guard 4 standing on both sides, and is positioned so as to keep a minute gap between the step 1 and the skirt guard 4.

  The step 1 has a step plate 6 on the upper part of the bracket 5 and a riser portion 7 on the front part. On both sides of the bracket 5, a driving roller (not shown) is attached on the back side, and a follower roller 8 guided by a guide rail 9 is attached on the riser 7 side. The step board 6 and the riser portion 7 of the step 1 are formed so as to slightly protrude from the side walls 5 a of the bracket 5. Seat wall portions 5b are provided on both side walls 5a of the bracket 5 of the step 1, and resin guide shoes 10 made of a low friction material are attached thereto. The front end surface of the guide shoe 10 protrudes from the end surface of the step 1, and by contacting the skirt guard 4, the step 1 is guided by the skirt guard 4 and driven back and forth to ensure straightness.

  On the other hand, Patent Document 2 describes an apparatus shown in FIG. FIG. 7 is a sectional view showing a part of an escalator which is a conventional passenger conveyor. Resin rollers 13 a and 13 b are installed on the outer side of the chain 12 on the shaft 11 that fixes the step 1. A support 14 is attached to the right roller 13a on the outer side, and a guide rail having a left and right guide surface with an inverted U-shaped cross section and an opposing space slightly larger than the width of the roller 13a is provided on the upper side of the support 14. 15 is attached. As a result, the roller 13a is driven back and forth while being restricted by the guide rail 15 in the left-right direction, so that the straightness of the step 1 is secured. In this structure, the distance between the skirt guard 4 and the end surface of the step 1 becomes constant if the dimensional relationship such as the fixed position of the guide rail 15 and the skirt guard 4 and the roller 13a and the step 1 is kept within a certain value. Is not installed. Reference numeral 16 denotes a guide rail. In the figure, the same reference numerals as those in FIG.

Japanese Patent No. 4350852 (paragraphs 0003-0006, FIGS. 7 and 8) Japanese Patent Laid-Open No. 6-16375 (paragraph 0012, FIG. 1) JP 2003-95571 A

  In passenger conveyors such as escalators, a follower roller is installed at the lower part of the step on the riser side. The follower roller also moves on the guide rail during driving. The main purpose of the follower roller is to facilitate the driving of the steps, so the restriction by the guide rail is generally loose. In the mechanism of Patent Document 1, the guide shoe is generally installed at one location near the shaft. That is, the step comes into contact with the skirt guard at one point through the guide shoe, and there is a possibility that the step swings in the rotation direction around the contact portion.

  Static factors such as parts accuracy such as pitch difference between left and right chains, shaft distortion, machining accuracy of mounting parts, accuracy when assembled, and phase difference between left and right gears that transmit power to the left and right chains during driving And the posture of the step at the time of driving may not be parallel to the skirt guard due to dynamic factors such as the cause that the positions of the left and right chains are not synchronized. Similarly, when the shape of the step itself is distorted, it is not parallel to the skirt guard. In such a case, since the guide shoe contacts the anti-riser part side of the step, the step and the skirt guard do not interfere with each other, but because of the mechanism, there is nothing to regulate it even if the riser part swings. There is a problem that the step interferes with the guard and scratches, or the guide shoe is locally loaded and unevenly worn.

  Since the guide shoe protrudes from the step and contacts the skirt guard continuously or intermittently, Patent Document 1 is provided with a mechanism for adjusting the protrusion of the guide shoe with a screw. Further, in Patent Document 3, when a strong contact is made, the protrusion size is automatically suppressed by deformation of the guide shoe itself and wear is avoided, or a spring is provided on the mounting surface of the guide shoe to make strong contact with the skirt guard. In this case, a guide shoe wear avoiding method is described in which the spring is contracted and the seating surface is lowered to the step side so that the protrusion margin is automatically adjusted. However, as described above, there is no description about a method for avoiding uneven wear of the guide shoe, which occurs due to the swinging posture of the step.

  In the structure of Patent Document 2, since there is nothing that regulates the riser side of the step, the step and the skirt guard interfere when the posture of the step is not parallel to the skirt guard due to the same factors as described above. It will be. In order to avoid interference with the passenger conveyor of this structure, after installing the steps on the shaft of the chain, it takes a method of installing the skirt guard while adjusting the position so as to maintain a certain gap with each step. The current situation is spending time.

  The present invention has been made to solve the above-described problems, and provides a passenger conveyor step device that can reliably avoid direct interference between a step and a skirt guard.

A step device for a passenger conveyor according to the present invention includes an endlessly connected step installed between the skirt guards so as to move along the skirt guards standing on both sides, and the steps In the step device of a passenger conveyor, comprising a roller provided at one end in the moving direction of the step and guided by a guide rail so as to keep a small gap between the step plate and the skirt guard, the moving direction of the step The other end of the step is provided on both side walls of the step so as to protrude from the end thereof, and includes a guide shoe that keeps a minute gap between the step plate of the step and the skirt guard, and the step includes the step plate and has a riser portion integrally formed, the guide shoe is visible from the passenger side, as replacement possible from the passenger side, which has been installed at both ends of the riser portion That.

  According to the passenger conveyor step device of the present invention, since the steps are regulated at both ends in the moving direction of the steps, direct interference between the steps and the skirt guard can be reliably avoided.

It is a perspective view which shows the assembly state of the step apparatus of the passenger conveyor which is Embodiment 1 of this invention. It is an expansion perspective view of the B section of FIG. It is a side view which shows the principal part of the driving | running state of the passenger conveyor which is Embodiment 1. FIG. The riser part of the step by Embodiment 3 is shown, The (a) is a front view, The (b) is an expansion perspective view of the C section. It is a perspective view which cuts and shows a part of escalator which is the conventional passenger conveyor. It is sectional drawing seen from the AA line of FIG. 5 in the arrow direction. It is sectional drawing which shows a part of escalator which is the conventional passenger conveyor.

Embodiment 1 FIG.
1 is a perspective view showing an assembled state of a step device for a passenger conveyor according to Embodiment 1 of the present invention. In addition, the skirt guard 4 is shown with the dashed-dotted line which imagines the position. FIG. 2 is an enlarged perspective view of a portion B in FIG. 1 and shows the guide shoe 10 and its mounting seat surface portion 17. FIG. 3 is a side view showing the main part of the operating state of the passenger conveyor according to the first embodiment so that the balustrade 2 and the skirt guard 4 can be made transparent so that the inside can be observed.

  In the passenger conveyor shown in the figure, the step 1 is composed of a tread plate 6, a riser portion 7 and a bracket 5 at the rear thereof. The chains 12 and 12 that drive the step 1 are arranged on both sides of the step 1 while being guided by guide rails (not shown). The chain 12 is provided with a driving roller 18 for the step 1. The drive roller 18 is provided with pins 11a for both of the chains 12 and 12 every several drive rollers 18, and as shown by a straight line with an arrow at the center, the pin 11a is inserted into the shaft 11, and the shaft 11 and the pin 11a are inserted. Are connected to each other to connect the chains 12 and 12 together.

  There is a C-shaped engaging portion 5c for attaching the shaft 11 to the back portion of the bracket 5 of the step 1, that is, on the side opposite to the riser portion 7, and the bush 19 is positioned at an appropriate position of the engaging portion 5c as indicated by an arc with an arrow at the center. After the movement, the engaging portion 5 c of the bracket 5 of the step 1 is connected to the shaft 11 via the bush 19. Following brackets 21 are provided at the lower ends of both brackets 5 and are guided by guide rails 22 in FIG. The skirt guard 4 is indicated by a one-dot chain line that imagines its position in FIG. 1, and in FIG. 3, the skirt guard 4 is made transparent so that the inside can be observed. The skirt guard 4 is erected as a lower part of the balustrade 2 on both sides of the step 1. The shaft 11 is disposed below the skirt guards 4 on both sides. The plurality of steps 1 are connected in an endless manner, and the reciprocating path is rotationally driven.

  On the brackets 5 on both sides, the seat surface portion 17 for attaching the guide shoe 10 is provided on the upper portion of the engaging portion 5c of the shaft 11 (or in the vicinity of the engaging portion 5c or on the outer periphery thereof) and on the peripheral portion on the lower portion of the riser portion 7. Each is provided protruding. That is, the seat surface portions 17 are provided at both ends of the step 1 in the moving direction. The seat surface portion 17a is provided at the upper portion of the engaging portion 5c of the shaft 11, and the seat surface portion 17b is provided at the lower peripheral portion of the riser portion 7. Is provided. The seat surface portions 17a and 17b are collectively referred to as a seat surface portion 17. It is desirable to install the seat surface portion 17a and the seat surface portion 17b as far as possible. In the first embodiment, the position of the seat surface portion 17 to which the guide shoe 10 is attached is such that the position of the step 1 is biased to one side, the guide shoe 10 is in strong contact with the skirt guard 4, and the painted surface of the skirt guard 4 is Even if they are peeled off or scratched, they are installed in a range where they cannot be seen from the passenger 20, that is, in the F side shown in FIG. In addition, E side is the range which the passenger 20 gets in and can be seen from a passenger.

The shape of the seat surface part 17 and the guide shoe 10 to which the guide shoe 10 of the step 1 is attached is shown in FIG. The seat surface portion 17 is provided with a through hole 17c in the center thereof, and has a shape in which a groove 17d crosses the front end portion of the seat surface portion 17 vertically. The height of the seat surface portion 17 is subjected to cutting so that the amount of protrusion from the end of the step 1 is within a specified range when the guide shoe 10 is attached. On the other hand, the guide shoe 10 includes a seat-shaped base portion 10a that contacts the skirt guard 4, a leg portion 10b, and a claw portion 10c. The base 10a of the guide shoe 10 is formed of a low friction material. A convex portion 10 d is formed on the base 10 a on the side opposite to the skirt guard 4. When the guide shoe 10 is attached, the leg portion 10b and the claw portion 10c are inserted into the through hole 17c of the seat surface portion 17 until the claw portion 10c comes out to the back side of the bracket 5. Then, the claw part 10c spreads on the back side of the bracket 5 and plays the role of retaining by being caught by the wall on the back side of the bracket 5. At this time, the convex portion 10d of the guide shoe 10 is fitted into the groove 17d of the seat surface portion 17, whereby the posture of the guide shoe 10 is determined and the rotation of the guide shoe 10 itself is prevented.

  The tread plate 6 and the riser portion 7 of the step 1 are formed to have a width that slightly protrudes from both side walls of the bracket 5. The both base portions 10a of the guide shoe 10 have their front end surfaces at the tread plate 6 and the riser portion 7 so as to maintain a minute constant interval (small interval) between the tread plate 6 and riser portion 7 of the step 1 and the skirt guard 4. It is provided so that it may protrude from the edge part (end surface). The step 1 is connected to a shaft 11 to which a driving roller 18 is attached, and is driven by chains 12 and 12, and the follower roller 21 is held so as to move the step 1 smoothly.

  According to the first embodiment, the step 1 is provided with a total of four guide shoes 10 at both ends in the moving direction of the step 1 together with both side walls of the step 1, so that the riser 7 side of the step 1 is also regulated. . That is, the guide shoe 10 comes into contact with the skirt guard 4 at both ends in the moving direction of the step 1 at two points on one side, and the step 1 does not swing in the rotational direction with respect to the skirt guard 4. For this reason, the side wall of the step 1 is caused by the skirt guard 4 due to the accuracy of parts of the chain 12, the shaft 11, the step 1 itself or the assembly accuracy of the passenger conveyor or the occurrence of a phase difference between gears that transmit power to the left and right chains 12. However, the guide shoes 10 protruding from the end portion of the step 1 in the moving direction of the step 1 (that is, the anti-riser side or the riser side) always contact the skirt guard 4. Accordingly, the step 1 and the skirt guard 4 are in direct contact with each other, and the situation where the painted surface of the skirt guard 4 is peeled off or scratched to expose them to the passenger side is reliably avoided. The gap is always kept constant. Further, since the skirt guard 4 is contacted at two points, the moving direction of the step 1 can be kept parallel to the skirt guard 4, and the guide shoe 10 is not hit by one piece, and uneven wear is avoided.

Embodiment 2. FIG.
In the second embodiment, a guide rail is provided at one end of the step in the moving direction (on the anti-riser portion side) so as to maintain a minute constant interval (a minute interval) between the step plate and riser portion of the step and the skirt guard. Guided rollers are provided (see FIG. 7 for type). Therefore, one end portion in the moving direction of the step is regulated by the roller so as to keep a minute gap between the step plate and riser portion of the step and the skirt guard. In Embodiment 2, the end of the step is moved to the other end (riser portion side) of the step on both side walls of the step so that a minute gap is maintained between the step plate and the riser portion and the skirt guard. A guide shoe is provided so as to protrude from the portion.

  The seat surface provided at the other end (riser part side) in the moving direction of the step, its position, and the method for attaching the guide shoe are the same as in the first embodiment. In the escalator of this mechanism, on the anti-riser side, the roller attached to the end of the shaft is driven while being guided and regulated by the guide rail, so that straightness is ensured. Furthermore, the guide shoe provided on the riser side restricts the riser side of the step from swinging when it comes into contact with the skirt guard. Therefore, interference between the step and the skirt guard is reliably avoided, and the movement direction of the step and the skirt guard are kept parallel when the step is driven.

Embodiment 3
FIG. 4 shows the riser part of the step according to the third embodiment, in which (a) is a front view and (b) is an enlarged perspective view of part C in (a). In the third embodiment, in the passenger conveyor step device, the guide shoe 10 provided on the riser unit 7 side has a design so that it can be seen from the passenger side. The guide shoe 10 was attached to the notches 23 provided at both ends of the riser portion 7 with bolts 24 so that the guide shoe 10 could be seen from the passenger side. If the color of the guide shoe 10 is yellow, there is also a warning effect for preventing entrainment. In the third embodiment, if the skirt guard and the guide shoe 10 come into strong contact with each other and are scratched, it will be visible to the passengers, so the material of the guide shoe 10 needs to be a softer resin than in the first embodiment. . The number of replacements of the guide shoe 10 increases due to the softness. In the case of the first embodiment, since the bracket has a seat surface portion, the replacement work of the guide shoe is performed by inserting a hand or a tool on the side surface of the step or removing the step in a place without the skirt guard. However, in the third embodiment, since the guide shoe 10 is located at a position where the passenger can see, the replacement work can be easily performed from the passenger side.

Embodiment 4
Also in a moving sidewalk (passenger conveyor step device), the guide shoes are preferably installed at both ends of the step in the moving direction together with both side walls of the step. In the case of a moving walkway, there is usually no riser, so the upper part of the shaft (or the vicinity of the upper part or its outer periphery) attached to the lower part of one end of the tread and the periphery of the lower part of the other end of the anti-axial side tread A guide shoe should be attached to each part.
In addition, it is connected endlessly between the skirt guards so as to move along the skirt guards erected on both sides, and there is a minute gap between the step having the step board and the step board and the skirt guard. In a moving sidewalk (passenger conveyor step device) provided with a roller provided at one end in the moving direction of the step and guided by a guide rail, on both side walls of the step at the other end in the moving direction of the step It is preferable to provide a guide shoe that is provided so as to protrude from the end portion, and that keeps a minute distance between the step board of the step and the skirt guard. In this case as well, a guide shoe may be attached to the lower peripheral portion of the other end portion in the moving direction of the tread board.
It should be noted that within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

DESCRIPTION OF SYMBOLS 1 Step 2 Parapet 3 Handrail 4 Skirt guard 5 Bracket 5a Bracket side wall 5b Seat surface part 5c Engagement part 6 Tread board 7 Riser part 8 Following roller 9 Guide rail 10 Guide shoe 10a Base part 10b Leg part 10c Claw part 10d Projection part 11 Shaft 11a Pin 12 Chain 13a Roller 13b Roller 14 Support 15 Guide rail 16 Guide rail 17 Seat surface 17a Seat surface 17b Seat surface 17c Through hole 17d Groove 18 Drive roller 19 Bush 20 Passenger 21 Following roller 22 Guide rail 23 Notch 24 Bolt

Claims (1)

It is connected endlessly between the skirt guards so as to move along the skirt guards erected on both sides, and is installed between the steps having the treads and between the step plates of the steps and the skirt guards. In a passenger conveyor step device comprising a roller provided at one end portion in the moving direction of the step and guided by a guide rail so as to maintain an interval,
Provided on both side walls of the step at the other end in the moving direction of the step so as to protrude from the end thereof, and provided with a guide shoe that keeps a minute gap between the step plate of the step and the skirt guard ,
The step has a riser portion formed integrally with the tread, and the guide shoe is installed at both ends of the riser portion so that it can be seen from the passenger side and exchanged from the passenger side. A passenger conveyor step device.