JP2012162353A - Inter-step catching preventive device of escalator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively restrain a foreign matter from being caught inter-steps when each of the steps is shifted from a stair-like state to a flat state in an escalator.SOLUTION: The inter-step catching preventive device of the escalator in which a large number of the steps move in series in a stair-like form and each treadboard becomes plane near a boarding and alighting port includes a rising step 50 vertically movably stored in a recessed part 46 formed near the riser face 34 of the adjacent step 26 in the treadboard 32 of the step 26; a cam 54 fixed to the lower part of the riser face 34 facing the rising step 50 and pushing up the rising step 50 when the step 26 is brought into the stair-like state; and a coil spring 52 pulling back the rising step 50 into the recessed part to a position where the upper face of the rising step 50 becomes flush with the treadboard 32 when the step 26 is shifted from the stair-like state to the flat state.

Description

  The present invention relates to an inter-step pinching prevention device for an escalator, and more particularly to an apparatus for preventing foreign matter from being pinched between steps when the step of the escalator is reduced from a stepped shape to a flat shape.

  Conventionally, an escalator is installed as an elevator for a user to move between floors in a commercial facility having a plurality of floors. In the escalator, a large number of steps are connected to move around, and in the vicinity of the entrance / exit, the upper surface of each step, that is, the tread is flush with each other and is flat, while each step is stepped when moving in an inclined manner. And move.

  As described above, when each step of the escalator shifts from a step shape to a flat shape, a foreign object such as rubber shoes may be caught between the steps. In this case, an abnormal vibration of the step is detected by the sensor provided in each step, and the escalator may be urgently stopped due to this.

  Specifically, with reference to FIG. 6A, each step 26 includes a tread 32 on which a passenger is placed and a riser 34 that is coupled to the bottom of the end of the tread 32 in the depth direction. The riser 34 is generally formed in a gently curved surface.

  When step 26 is stepped and moves in the direction of arrow A, that is, obliquely upward, it enters a substantially triangular shape between the vertical line 36 descended from the upper end of the riser 34 and the surface of the riser 34 when viewed from the lateral direction. A space 38 is created. Therefore, if a shoe 90 made of a soft material such as a rubber shoe worn by a passenger is located in the space 38, the riser 34 and the tread board are moved when each step 26 moves so as to approach the entrance and exit and become flat. In some cases, the toe portion 90a of the shoe 90 is sandwiched in the gap 40 between the shoe 32 and the shoe 32.

  In order to prevent foreign objects such as shoes from being located in the space 38, for example, a yellow U-shaped frame for alerting is often displayed or installed on the edge of the surface of the tread 32 in step 26. However, there are some passengers who get on the tread 32 without worrying about the frame.

  Further, as shown in FIG. 6B, a passenger wearing a long skirt 92, for example, on the step 26 moving in the direction of the arrow B, that is, obliquely downward in a stepped manner, is on the step 26 and approaches the entrance / exit. When each step 26 moves so as to be flat, the rear lower end 92a of the long skirt 92 positioned in the space 38 may be caught in the gap 40 between the riser 34 and the tread 32. there were. Such trapping between the steps behind the passenger is difficult to avoid because it is normal not to pay attention to the rear even if the passenger stands in the frame.

  As prior art documents related to this, for example, Japanese Patent Application Laid-Open No. 2010-189099 (hereinafter referred to as Patent Document 1) describes a step and a card guard by a method other than intermittently impacting a shoe that contacts the skirt guard. The escalator which made it a solution subject to suppress that shoes are pinched | interposed into the clearance gap between is disclosed. The escalator includes a plurality of steps that are connected endlessly and circulates and a scard guard that is disposed opposite to both sides of the step that moves on the forward path side. A plurality of protrusions extending along the direction are formed in a direction perpendicular to the moving direction.

JP 2010-189090 A

  The escalator disclosed in Patent Document 1 is effective in suppressing rubber shoes and the like from being caught in the gap between the step and the skirt guard, but there is a solution for preventing foreign matter from being caught between the steps. Not give.

  An object of the present invention is to provide an inter-step pinching prevention device for an escalator that can effectively suppress foreign object pinching between steps when each step transitions from a step shape to a planar shape.

  An escalator between steps of an escalator according to the present invention is an escalator between steps of an escalator in which a large number of steps are connected in a staircase and the stepping plate of each step is planar in the vicinity of the entrance and exit.

  In the recess provided in the vicinity of the riser surface of the step adjacent to the stepping plate of the step, it is fixed to a rising step portion accommodated so as to be movable up and down, and a lower portion of the riser surface facing the rising step portion, A cam that pushes up the raised step when the step is stepped, and the upper surface of the raised step is flush with the tread when the step changes from a stepped shape to a planar shape. And a return member that pulls the raised step portion back into the recess.

  In the inter-step pinching prevention device of the escalator according to the present invention, the rising step is formed in a box shape having an opening at the bottom, and the return member is between the ceiling surface in the rising member and the bottom of the recess. You may be comprised with the spring connected.

  Further, in the inter-step pinching prevention apparatus for an escalator according to the present invention, the cam may be configured to pass through a notch formed in a bottom portion of the concave portion and push up a lower portion of the rising step portion.

  Moreover, in the escalator between steps of the escalator according to the present invention, it is preferable that at least an upper portion of the rising step portion is colored with a warning color.

  Further, in the inter-step pinching prevention device of the escalator according to the present invention, the side surface in the depth direction of the rising step portion is formed in a comb-teeth shape formed at the edge of the tread on which the rising step portion is provided. It may be formed in a shape that fits with a gap between at least one of the convex portion and the comb-shaped convex portion on the riser surface of the adjacent step.

  Furthermore, in the inter-step pinching prevention device of the escalator according to the present invention, the rising step portion has a substantially trapezoidal cross section, and a concave portion that accommodates this has a substantially trapezoidal shape corresponding to the rising step portion. The cam may include a receiving space, and the cam may be formed in a shape that pushes the rising step portion obliquely upward along parallel sides of the rising step portion.

  According to the inter-step pinching prevention device for an escalator according to the present invention, a stepped portion pushed up by a cam is positioned in the vicinity of a riser surface of an adjacent step on a step plate that moves in a step shape. For this reason, it is possible to prompt the passenger to stand at this elevated step, that is, at a position away from the riser surface. Thereby, when each step approaches the entrance / exit and becomes planar, it can suppress effectively that foreign materials, such as rubber shoes, are pinched | interposed between each step.

1 is a diagram schematically showing an overall configuration of an escalator to which an inter-step pinching prevention device according to an embodiment of the present invention is applied. It is a longitudinal cross-sectional view of the step provided with the pinching prevention apparatus between steps of this embodiment. It is a top view which shows a part of rising step part which comprises the pinching prevention apparatus between steps. It is a figure which shows the cam fixed to the riser surface with the cross section which the uplift step part partly fractured | ruptured. It is a figure which shows the operation state of the pinching prevention apparatus between steps of this embodiment, (A) is a figure which shows a mode when each step is in the state of a plane, (B) is each step becomes step shape. FIG. It is a figure for demonstrating the foreign material pinching between steps in the conventional escalator, (A) shows the case where a foreign material is a rubber shoe, (B) shows the case where a foreign material is a back lower end part of a long skirt.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, and the like are examples for facilitating the understanding of the present invention, and can be appropriately changed according to the application, purpose, specification, and the like.

  FIG. 1 is a schematic configuration diagram of an escalator 10 to which an inter-step pinching prevention device according to an embodiment of the present invention is applied. The escalator 10 includes a truss 12 made of, for example, a metal plate that supports the escalator itself from below, and a moving handrail portion 14 and a balustrade portion 16 provided on the truss 12.

  The truss 12 has an upper truss portion 12a installed on the floor 18 on the upper floor, a lower truss portion 12b installed on the floor 20 on the lower floor, and a state where the truss 12 is inclined between the upper truss portion 12a and the lower truss portion 12b. It is comprised including the inclination truss part 12c connected by.

  The upper portion of the upper truss portion 12 a corresponding to the entrance on the upper floor is covered with a landing plate 19. In the upper truss portion 12a, there are a drive unit (not shown) including a motor and a speed reducer, a drive sprocket 22 that is rotationally driven by the drive unit, an escalator control panel 30 that controls the entire escalator 10, and the like. Is arranged.

  On the other hand, the upper part of the lower truss portion 12 b corresponding to the entrance on the lower floor is covered with a landing plate 21. A driven sprocket 24 is disposed in the lower truss portion 12b.

  A number of steps 26 are provided in the truss 12. An endless step chain 28 spanned between the drive sprocket 22 and the driven sprocket 24 is fixed to both ends of each step 26 in the width direction. As a result, the drive sprocket 22 is rotationally driven by the drive unit, so that each step 26 moves up or down between the lower floor and the upper floor in a stepped manner. In addition, each step 26 shifts from a staircase shape to a planar shape as it approaches the entrances and exits of the upper floor and the lower floor so that the steps are eliminated.

  FIG. 2 is a longitudinal sectional view showing step 26 provided with the inter-step pinching prevention device of the present embodiment. As described in the prior art, the step 26 includes a step board 32 on which a passenger stands and rides, and a riser 34 connected to a lower end portion of the tread board 32 in the depth direction (left and right direction in FIG. 2). The riser 34 is generally formed in a gently curved surface.

  A pair of metal frames 42 having a substantially V-shape are fixed to both sides of the width direction (perpendicular to the paper surface in FIG. 2) on the lower surface of the tread plate 32 of the step 26. A guide roller 44 is rotatably supported at the lower end of the frame 42. By moving the guide roller along a guide rail (not shown) provided in the truss 12, each step 26 moves around while moving from a stepped shape to a flat shape or vice versa. .

  A recess 46 is formed at one end of the tread 32 in the depth direction. The recess 46 is provided in the vicinity of the surface of the riser 34 of another adjacent step 26. Moreover, the recessed part 46 has the side wall part 46a which inclined a little with respect to the perpendicular direction, and the bottom part 46b connected with the lower end part of the side wall part 46a, and these side wall parts 46a and bottom part 46b are substantially trapezoid shape. An accommodation space is formed.

  A cutout 47 is formed in the bottom 46b of the recess 46 to allow the cam to pass therethrough. This will be described later again.

  In the recess 46 formed in the tread plate 32 of step 26, a rising step portion 50 is disposed. The rising step portion 50 has a width equivalent to that of the step 26. Further, the upper surface of the rising step portion 50 is flush with the upper surface of the tread plate 32 when not pushed up by the cam.

  The rising step portion 50 is formed in a box shape having a substantially trapezoidal three-way wall portion, and the lower portion opens toward the bottom portion 46 b of the concave portion 46. The end in the width direction of the rising step portion 50 may have a side wall or may be opened. A coil spring (return member) 52 is connected between the ceiling surface in the rising step portion 50 and the bottom portion of the recess 46. The coil spring 52 has a function of pulling up the raised step portion 50 pushed up in the direction of arrow C so as to rise from the tread plate 32 to the accommodation position in the recess 46. A plurality of coil springs 52 are arranged at an appropriate interval in the width direction of the rising step portion 50.

  In this embodiment, the coil spring is used as the return member for the rising step portion. However, the present invention is not limited to this, and other elastic members such as a leaf spring, rubber, and a fluid cylinder are used as the return member. May be.

  A cam 54 is fixed to the outer surface of the riser 34 in step 26. The cam 54 is attached to the lower part of the surface of the riser 34 facing the rising step 50 of the adjacent step 26. The cam 54 has a function of pushing up the rising step portion 50 when each step 26 transitions from a planar shape to a step shape. The cam 54 has a linear upper surface 54 a and a substantially arc-shaped lower surface 54 b and protrudes from the riser 34. Further, the cam 54 is formed to have a narrower width than the notch 48, so that the cam 54 can pass through the notch 48 in the vertical direction when the rising step portion 50 is pushed up.

  Furthermore, it is preferable that at least the upper portion of the rising step portion 50 is colored with a warning color, for example, yellow. By being colored in this way, it is possible to alert the passengers who are going to get on the step at the entrance and exit more effectively, and as a result, it is urged not to stand on the rising step portion 50. it can.

  FIG. 3 is a top view showing a part of the rising step portion 50, and FIG. 4 is a view showing the cam 54 fixed to the surface of the riser 34 together with a partially cutaway cross section of the rising step portion 50. It is.

  Referring to FIG. 3, a large number of grooves 33 a called cleats are formed on the surface of the tread 32 in step 26 so as to be aligned in the width direction and extended in the depth direction. In other words, between the grooves 33a, a large number of protrusions 33b are formed side by side in the width direction and extended in the depth direction. The cleat is intended to make it difficult for passengers standing on it to slip. The ends of the ridges 33b constituting the cleats protrude from the edge of the tread 32 to the stepped portion 50 side in a comb-like shape.

  In the present embodiment, a large number of protrusions 56 corresponding to the protrusions 33 b of the tread plate 32 are also formed on the upper surface of the rising step portion 50. However, since the upper surface of the rising step portion 50 does not need to have an anti-slip function, it may be formed in a flat shape without unevenness.

  Grooves 35a and 35b having different groove depths are also formed on the surface of the riser 34. The protrusions 56 of the raised step portion 50 are configured to be fitted in the grooves 35a and 35b in a non-contact state. Further, a comb-like convex portion 58 is formed on the side surface of the rising step portion 50 so as to be fitted in a non-contact state between the end portions of the protrusion 33 b protruding from the edge portion of the tread plate 32.

  In this way, the rising step portion 50 is fitted in a concave and convex manner in a non-contact state on both sides in the depth direction, so that it is possible to prevent a shift in the width direction with respect to the step 26 and a guide function when moving in the vertical direction. Can be fulfilled. In addition, since the gap between the step board 32 and the rising step portion 50 and the gap between the rising step portion and the step plate 32 of the adjacent step 26 are formed in a narrow zigzag shape, It can also be expected to be able to prevent foreign objects from being caught.

  In addition, in this embodiment, although the uneven | corrugated fitting part in a non-contact state was provided in the depth direction both sides of the rising step part 50, it is not limited to this, The depth direction of the rising step part 50 The concave / convex fitting as described above may be provided only on any one of the side surfaces, or both side surfaces of the rising step portion 50 may be formed in a flat shape without the concave / convex fitting.

  Referring to FIG. 4, a cam 54 fixed to the surface of the riser 34 is shown in a top view. In addition, a rectangular cut 48 formed in the bottom 46 b of the recess 46 that accommodates the rising step 50 is shown corresponding to the cam 54. In this way, the cam 54 and the notch 48 are provided at a plurality of positions in the width direction of the step 26. The cam 54 has a length substantially corresponding to the width of the rising step portion 50 in the depth direction, and can come into contact with the lower portions of the two side walls of the rising step portion 50 at the same time.

  Next, the operation of the inter-step pinching prevention device including the above-described rising step portion 50, the coil spring 52, and the cam 54 will be described. FIGS. 5A and 5B are diagrams showing the operation state of the inter-step pinching prevention device, where FIG. 5A shows a state where each step 26 is in a flat state, and FIG. 5B shows a stepped shape of each step 26. The state of time is shown.

  Referring to FIG. 5A, when the step plates 32 of the respective steps 26 adjacent to each other in the vicinity of the entrance / exit of the escalator 10 are in a flat state, the cam 54 fixed to the lower portion of the riser 34 rises up. 50 away from the bottom. Therefore, in this state, the raised step portion 50 is accommodated in the recess 46 by its own weight and / or the pulling force of the coil spring 52. At this time, since the tread plate 32 of step 26 and the upper surface of the rising step portion 50 are flush with each other, it does not hinder passengers who try to get on the escalator 10. In addition, the passenger is also urged to be careful not to stand on the raised step portion 50 that is colored yellow as described above.

  Thereafter, each step 26 is stepped as shown in FIG. 5B as it gradually moves away from the entrance / exit. In this case, the step 26 on the upper side (right side in FIG. 5B) moves in the direction of the arrow C relative to the adjacent step 26 to form a step shape. At this time, the cam 54 fixed to the riser 34 of the upper step 26 passes through the notch 48 formed in the bottom 46b of the recess 46 of the lower step 26 from below and comes into contact with the lower portion of the protruding step 50. Push up in the direction of arrow C, that is, diagonally upward. As a result, the rising step portion 50 rises and protrudes above the tread 32 in step 26 against the pulling force of the coil spring 52.

  In this case, it is preferable that the cam 54 is formed in a shape that pushes up the stepped portion 50 obliquely upward along a parallel side of the stepped portion 50 that has a substantially trapezoidal longitudinal section. By doing in this way, when the rising step part 50 rises, it can avoid interfering with the surface of the adjacent riser 34. FIG.

  When the raised step portion 50 protrudes as described above, a substantially triangular space 38 (between the vertical direction line descending from the upper end of the riser 34 of the upper step 26 and the surface of the riser 34 ( 6) is occupied by the protruding raised step 50. Accordingly, the passenger riding on the step 26 stands at a position on the tread 32 away from the riser 34 due to the stepped portion 50, and as a result, the rubber shoes, long skirts, etc. worn by the passenger are stepped. It is possible to effectively suppress entry into the gap between the 26.

  As each step 26 moving in a staircase shape approaches the entrance / exit, the level difference of each step 26 is reduced to a planar state as shown in FIG. At this time, the raised step portion 50 protruding on the tread 32 is retracted downward in the cam 54 and accommodated in the recess 46 by the pulling force of the coil spring 52 and the like.

  10 escalator, 12 truss, 12a upper truss, 12b lower truss, 12c inclined truss, 14 handrail, 16 balustrade, 18, 20 floor, 19, 20 landing plate, 22 driven sprocket, 24 driven sprocket , 26 step, 28 step chain, 30 escalator control panel, 32 tread, 33a groove, 33b ridge, 34 riser, 35a, 35b groove, 36 vertical line, 38 space, 40 gap, 42 frame, 44 guide roller, 46 Recess, 46a Side wall, 46b Bottom, 50 Lifting step, 52 Coil spring, 54 Cam, 54a Upper surface, 54b Lower surface, 56 Projection, 58 Projection, 90 Shoes, 90a Toe, 92 Long skirt, 92a Rear lower end .

Claims (6)

An apparatus for preventing pinching between steps of an escalator in which a large number of steps are connected and moved in a staircase shape, and the step board of each step is planar in the vicinity of the entrance and exit,
In the recess provided in the vicinity of the riser surface of the step adjacent to the stepping plate of the step, a rising step portion accommodated so as to be vertically movable,
A cam that is fixed to a lower portion of the riser surface facing the rising step, and pushes up the rising step when the step is stepped;
A return member that pulls the raised step into the recess until the upper surface of the raised step is flush with the tread when the step transitions from a stepped shape to a planar shape;
An apparatus for preventing pinching of escalators between steps. In the escalator between steps of the escalator according to claim 1,
The rising step portion is formed in a box shape having an open bottom, and the return member is configured by a spring connected between a ceiling surface in the rising member and a bottom portion of the recess. , Prevention device between escalator steps. In the escalator between steps of the escalator according to claim 1 or 2,
The inter-step pinching prevention device for an escalator, wherein the cam is configured to push up a lower portion of the rising step portion through a notch formed in a bottom portion of the concave portion. In the escalator inter-step pinching prevention device according to any one of claims 1 to 3,
An apparatus for preventing pinching of escalators between steps, wherein at least the upper part of the rising step portion is colored with a warning color. In the inter-step pinching prevention device of the escalator according to any one of claims 1 to 4,
On the side surface in the depth direction of the rising step portion, a comb-like convex portion formed on the edge of the tread on which the rising step portion is provided, and the comb on the riser surface of the adjacent step An inter-step pinching prevention device for an escalator, wherein the device is formed in a shape that fits at least one of the tooth-shaped convex portions with a gap. In the escalator between steps of the escalator as described in any one of Claims 1-5,
The raised step portion has a substantially trapezoidal cross section, and a recess for accommodating the raised step portion includes a substantially trapezoidal containing space corresponding to the raised step portion, and the cam is formed on the raised step portion. An apparatus for preventing pinching of escalators between steps, wherein the apparatus is formed in a shape that pushes up the rising step portion obliquely upward along parallel sides.

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