JP2008120512A - Inlet safety device for passenger conveyor and escalator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an accident in which foreign matter is caught in a clearance between a moving handrail and an inlet member even when a safety switch is not normally operated, prevent generation of wear powder, and inexpensively manufacture the inlet member. <P>SOLUTION: An inlet safety device is provided with: the inlet member 11 which covers the periphery of the moving handrail 5 in a position where the moving handrail 5 enters into a skirt part 6 and is movably arranged in the moving direction of the moving handrail 5; the safety switch 12 detecting the movement of the inlet member 11; and a brush part 13 projecting from the end surface 11a of the inlet member 11 toward a direction almost opposite to the moving direction of the moving handrail 5l. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an inlet safety device and an escalator for a passenger conveyor for preventing a rolling accident at a place where a moving handrail enters a skirt portion.

  An escalator, which is a passenger conveyor, includes a truss structure disposed between an upper floor and a lower floor, and a number of steps endlessly connected to each other along a substantially elliptical track in the truss structure. A pair of balustrades erected on both sides of the step, a pair of endless moving handrails that are attached to the peripheral portions of the pair of balustrades and move in synchronization with the steps, and lower portions of the pair of balustrades And a pair of skirt portions provided from one entrance / exit to the other entrance / exit.

  The moving handrail appears outside from the skirt portion on the entrance side of the escalator and moves outside so that the user can grasp it by hand when traveling on the upper end side of the balustrade. Then, it enters the skirt portion on the exit side of the escalator and moves in the skirt portion when traveling on the lower end side of the balustrade. Where the moving handrail enters the skirt portion from the outside, it is assumed that the user's finger or the like is caught in the gap with the skirt portion together with the moving handrail. For this reason, various inlet safety devices have been conventionally proposed as a measure for preventing the skirt portion from being caught (see, for example, Patent Document 1).

  One conventional example of the inlet safety device is shown in FIGS. 7 and 8, the inlet safety device 100 is an inlet member 103 provided so as to be able to change in the moving direction c of the moving handrail 102 at a position where the moving handrail 102 enters the front plate 101 a of the skirt portion 101. And a safety switch 104 that is provided inside the skirt portion 101 and detects a change in the moving direction c of the moving handrail 102 of the inlet member 103. The inlet member 103 protrudes outward from the front plate 101 a of the skirt portion 101 and surrounds the outer periphery of the moving handrail 102. The inlet member 103 is disposed with a predetermined gap with respect to the moving handrail 102 in consideration of vibrations of the moving handrail 102, component dimensional errors, component attachment errors, and the like.

  In the above configuration, when a foreign object such as a user's finger is caught in the gap between the moving handrail 102 and the inlet member 103, the inlet member 103 changes in the moving direction c of the moving handrail 102, and the safety switch 104 Detect. The detection of the safety switch 104 stops the operation of the escalator, and prevents a foreign matter such as a user's finger from being caught deeply in the gap between the moving handrail 102 and the inlet member 103.

  However, in the conventional example, safety cannot be ensured if the safety switch 104 does not operate for some reason even if the inlet member 103 changes in the moving direction c of the moving handrail 102. 9 and 10 show conventional inlet safety devices that can ensure safety even when the safety switch 104 is inoperative.

  9 and 10, in the inlet safety device 110, the configuration of the inlet member 111 is different from that in the conventional example. That is, the inlet member 111 has a recess 111a on the tip side. A brush portion 112 is implanted in the entire area of the inner surface of the recess 111a. The brush portion 112 does not protrude outside the inlet member 111 and is disposed in the recess 111a. The brush portion 112 is inclined toward the moving handrail 102, and the tip of the brush portion 112 is in contact with the moving handrail 102.

According to this conventional example, since the brush portion 112 is disposed at a position before the gap between the inlet member 111 and the moving handrail 102, foreign matter such as a user's finger is first depressed by the brush portion 112 by the concave portion 111a of the inlet member 111. Is prevented from entering the gap between the inlet member 111 located behind and the moving handrail 102. That is, foreign matter such as a finger is prevented from entering the gap between the inlet member 111 and the moving handrail 102 itself.
Japanese Utility Model Publication No. 2-52880

  However, in the latter conventional example, since the brush portion 112 is in contact with the moving handrail 102, there is a problem in that wear powder of the moving handrail 102 is generated. Further, since the recess 111a is provided in the inlet member 111 and the brush portion 112 needs to be implanted in the recess 111a, the manufacturing cost of the inlet member 111 is increased.

  Therefore, the present invention can prevent accidents involving the clearance between the inlet member and the moving handrail regardless of whether the safety switch is normally operated, and further, no wear powder is generated on the moving handrail. An object is to provide an inlet safety device for a passenger conveyor which is inexpensive.

  A feature of the present invention is an inlet safety device for a passenger conveyor, which covers an outer periphery of the moving handrail at a position where the moving handrail enters the skirt portion, is separated from the moving handrail, and is provided with the moving handrail. An inlet member movably provided in the moving direction, a safety switch for detecting the movement of the inlet member, and a brush portion projecting in the longitudinal direction of the moving handrail from the front end surface of the inlet member. The summary is provided.

  According to the present invention, since the brush portion is positioned in front of the gap between the inlet member and the moving handrail, foreign matters such as a user's finger are first prevented from entering further by the brush portion, and are located in the back. It does not enter the gap between the inlet member and the moving handrail. And since the brush part which protrudes from the front end surface of an inlet member protrudes along the direction substantially opposite to the moving direction of a moving handrail, a brush part hardly touches a moving handrail, and the front-end | tip of an inlet member Since it is sufficient to provide a brush portion on the surface, manufacturing is easy. As described above, it is possible to prevent the accident of getting caught in the gap between the inlet member and the moving handrail regardless of whether the safety switch is normally operated, and further, the moving member is not worn and the inlet member can be manufactured at a low cost. .

  In the conventional example, since the brush portion is provided in the concave portion of the inlet member, when a part of the user's finger or the like comes into contact with the brush portion, the finger or the like has already entered the inlet member. . On the other hand, in the present invention, since the brush portion is provided so as to protrude to the outside of the inlet member, a foreign matter such as a user's finger contacts the brush portion at a position in front of the inlet member. Therefore, the timing of pulling out the finger or the like due to the uncomfortable feeling of contact with the brush portion can be advanced, and safety is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 3 show a first embodiment to which an inlet safety device for a passenger conveyor according to the present invention is applied, FIG. 1 is a schematic side view of an escalator, and FIG. 2 is a side view showing an installation state of the inlet safety device. 3 is a cross-sectional view taken along line AA in FIG.

  As shown in FIG. 1, an escalator 1 that is a passenger conveyor is disposed along an elliptical orbit in a truss structure 2 disposed between an upper floor and a lower floor, and the truss structure 2. A large number of steps 3 connected endlessly, a pair of balustrades 4 erected on both sides of the large number of steps 3, and attached to the peripheral portions of the pair of balustrades 4, are synchronized with the numerous steps 3. A pair of endless moving handrails 5 and a pair of skirt portions that cover the lower positions of the pair of balustrades 4 and are provided between the entrance / exit of the upper floor and the entrance / exit of the lower floor 6 is provided.

  The moving handrail 5 appears outside from the skirt portion 6 on the entrance / exit side of the lower floor during driving in the upward direction U, and enters the skirt portion 6 on the entrance / exit side of the upper floor. Further, during operation in the descending direction D, it appears outside the skirt portion 6 on the entrance / exit side of the upper floor and enters the skirt portion 6 on the entrance / exit side of the lower floor. And in each driving | operation, when the moving handrail 5 drive | works the upper end side of the balustrade 4, it utilizes for a user grasping with a hand.

  As shown in FIGS. 2 and 3, the skirt portion 6 covers the inner side of the balustrade 4 on the step 3 side and protects the user's feet, and the outer deck portion 6 b that covers the outer side of the balustrade 4. A front inner plate 6c that covers the inner side of each end face at both sides in the longitudinal direction of the inner deck portion 6a and the outer deck portion 6b, that is, at the entrance and exit positions of both the upper floor and the lower floor, and the front outer It is comprised from the plate 6d. A balustrade / handrail hole 7 for passing the balustrade 4 and the moving handrail 5 is formed in the front inner plate 6c and the front outer plate 6d at the entrance / exit positions of both the upper floor and the lower floor. . An inlet safety device 10 is installed at a position around each balustrade / handrail hole 7. The inlet safety device 10 may be installed only at a position where the movable handrail 5 enters the skirt portion 6, but the escalator 1 can be selected from ascending operation and descending operation. Therefore, the inlet safety device 10 is installed in two places on the entrance / exit position side of both the upper floor and the lower floor.

  As shown in detail in FIGS. 2 and 3, the inlet safety device 10 is configured such that the base end side is inserted into the balustrade / handrail hole 7 of the front inner plate 6 c and the front outer plate 6 d, and the front end side is the front inner plate 6 c and the front outer side. An inlet member 11 projecting outward from the plate 6d, a safety switch 12 disposed inside the front inner plate 6c and the front outer plate 6d, and a brush portion 13 implanted in the front end surface 11a of the inlet member 11 I have.

  The inlet member 11 is similarly C-shaped so as to surround the outer periphery of the movable handrail 5 having a C-shaped cross section, and covers the position of the movable handrail 5 positioned outside the front inner plate 6c and the front outer plate 6d. ing. The inlet member 11 is disposed so as to be movable in the moving direction of the moving handrail 5 (direction of arrow c in FIG. 2). The inlet member 11 is formed of a rubber material. On the tip surface of the inlet member 11, press-fitting holes (not labeled) are formed at intervals equal to or larger than the diameter of the brush piece 13 a described below.

  The safety switch 12 detects a change in the moving direction of the moving handrail 5 of the inlet member 11 (the direction of arrow c in FIG. 2), and outputs this detection information to a drive control unit (not shown) of the escalator 1. When receiving the movement information of the inlet member 11 from the safety switch 12, the drive control unit immediately stops the escalator 1 in an emergency.

  The brush part 13 protrudes from the front end surface 11a of the inlet member 11 along a direction substantially opposite to the moving direction of the moving handrail 5 (the c arrow direction in FIG. 2). Thereby, the brush part 13 is arrange | positioned with respect to the moving handrail 5 hardly. The brush portion 13 has a length that reaches a position immediately before the moving handrail 5 changes from a horizontal position to a curved position, and is the same color as the moving handrail 5.

  The brush portion 13 includes a plurality of brush pieces 13 a that are press-fitted into a plurality of press-fitting holes in the tip end surface 11 a of the inlet member 11. Each brush piece 13a has a circular cross section at the base, and is implanted at an interval equal to or larger than the diameter of the brush piece 13a. Each brush piece 13a is made of synthetic resin, and the tip side is branched into a plurality of pieces. Thus, the brush portion 13 covers the outer periphery of the moving handrail 5 with almost no gap. The branched tip side of each brush piece 13a has sufficient flexibility.

  According to the configuration of the inlet safety device 10 described above, since the brush portion 13 is disposed at a position sufficiently in front of the gap between the inlet member 11 and the moving handrail 5, a foreign object such as a user's finger is first drawn into the brush portion 13. Is prevented from entering further, and does not enter the gap between the inlet member 11 located behind and the moving handrail 5. And since the brush part 13 which protrudes from the front end surface 11a of the inlet member 11 protrudes along the direction substantially opposite to the moving direction c of the moving handrail 5, the brush part 13 hardly contacts the moving handrail 5, and The brush portion 13 may be provided on the distal end surface 11a of the inlet member 11, and the manufacture is easy. From the above, it is possible to prevent the accident of getting caught in the gap between the inlet member 11 and the moving handrail 5 regardless of whether the safety switch 12 is normally operated, and the moving handrail 5 does not generate wear powder. The manufacturing cost of the member 11 is low.

  In the conventional example, since the brush portion is provided in the concave portion of the inlet member, when a foreign object such as a user's finger contacts the brush portion, the finger has already entered the inlet member. On the other hand, in the present invention, since the brush portion 13 is provided so as to protrude outside the inlet member 11, a foreign object such as a user's finger contacts the brush portion 13 at a position in front of the inlet member 11. Therefore, the timing of pulling out a finger or the like due to the uncomfortable feeling of contact with the brush portion 13 can be advanced, and safety is improved.

  Even if the user touches the brush portion 13, if the state remains without pulling out a finger or the like, the inlet member 11 is pressed through the brush portion 13 so that the inlet member 11 moves in the moving direction c of the moving handrail 5. Change. This change is detected by the safety switch 12, and the operation of the escalator 1 is stopped urgently.

  Moreover, since it is only necessary to replace the existing equipment with the inlet member 11 with the brush portion 13, it is possible to easily perform retrofitting installation on the existing equipment.

(Second Embodiment)
4 and 5 show a second embodiment of the present invention, FIG. 4 is a side view showing the installation state of the inlet safety device, and FIG. 5 is a sectional view taken along line BB in FIG.

  As shown in FIGS. 4 and 5, the inlet safety device 20 according to the second embodiment has a front inner plate of the skirt portion 6 as compared with the inlet safety device 10 according to the first embodiment. 6c and an inlet guard portion 21 fixed to the front outer plate 6d. The inlet guard portion 21 covers the outer periphery of the inlet member 11 protruding from the skirt portion 6.

  Since other configurations are the same as those of the first embodiment, the same components in the drawings are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment, since the inlet guard portion 21 that covers the inlet member 11 is provided, the user's baggage, foot, or the like accidentally hits the inlet member 11, and the inlet member 11 moves in the moving direction c of the moving handrail 5. It is possible to prevent the safety switch from malfunctioning due to the transition to.

  Since the inlet guard part 21 can be easily attached to the existing equipment, retrofit installation to the existing equipment is easily possible.

  In each of the embodiments, the inlet safety devices 10 and 20 are applied to the escalator 1 that is a passenger conveyor. However, it is needless to say that the inlet safety devices 10 and 20 can be applied to passenger conveyors other than the escalator 1, for example, moving walkways.

(Other embodiments)
It should not be understood that the descriptions and drawings which form part of the disclosure of the above-described embodiments limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  In the above-described embodiment, the distance between the tip of the brush portion 13 and the moving handrail 5 is the same as that of the gap between the moving handrail 5 and the inlet member 11, but as shown in FIG. The distance between the tip of the brush portion 13 and the moving handrail 5 may be larger than the gap between the moving handrail 5 and the inlet member 11 so that the portion 13 expands outward. In this way, by expanding the brush portion 13, an area where the brush portion 13 hits a finger or the like approaching the inlet member 11 can be widened to prevent an accident such as finger insertion.

The schematic side view of the escalator which applied the inlet safety device which concerns on the 1st Embodiment of this invention. The side view which shows the installation state of an inlet safety device. FIG. 3 is a sectional view taken along line AA in FIG. 2. The side view which shows the installation state of the inlet safety device which concerns on the 2nd Embodiment of this invention. BB sectional drawing of FIG. The side view which shows other embodiment of this invention. The side view which shows the installation state of the inlet safety device of a prior art example. CC sectional view taken on the line of FIG. Sectional drawing which shows the installation state of the inlet safety device of another prior art example. The DD sectional view taken on the line of FIG.

Explanation of symbols

1 Escalator (passenger conveyor)
DESCRIPTION OF SYMBOLS 5 Moving handrail 6 Skirt part 10 Inlet safety apparatus 11 Inlet member 11a Tip surface 12 Safety switch 13 Brush part 13a Brush piece 20 Inlet safety apparatus 21 Inlet guard part

Claims (10)

An inlet member that covers an outer periphery of the moving handrail at a position where the moving handrail enters the skirt portion, is separated from the moving handrail, and is movable in a moving direction of the moving handrail;
A safety switch for detecting movement of the inlet member;
A brush part protruding from the front end surface of the inlet member toward the longitudinal direction of the moving handrail;
An inlet safety device for a passenger conveyor, comprising:   The inlet safety device for a passenger conveyor according to claim 1, further comprising an inlet guard portion that covers an outer periphery of an inlet member that protrudes from the skirt portion.   The inlet safety of the passenger conveyor according to claim 1 or 2, wherein the brush portion has a length that reaches a position immediately before the moving handrail changes from a horizontal position to a curved position. apparatus.   The said brush part is comprised from the several brush piece each press-fitted in the several press-fit hole formed at intervals in the front end surface of the said inlet member, The Claim 1 thru | or 3 characterized by the above-mentioned. An inlet safety device for a passenger conveyor described in any one of the above.   5. The passenger conveyor inlet safety device according to claim 4, wherein each of the brush pieces is made of a synthetic resin having elasticity with a distal end branched into a plurality of brush pieces.   The inlet safety device for a passenger conveyor according to claim 4 or 5, wherein the plurality of brush pieces are attached to the inlet member at intervals equal to or larger than the diameter of the brush pieces.   The inlet safety device for a passenger conveyor according to any one of claims 1 to 6, wherein the brush portion has the same color as the moving handrail.   The distance between the tip of the brush part and the moving handrail is larger than a gap dimension between the moving handrail and the inlet member. Inlet safety device for passenger conveyor.   The inlet safety device for a passenger conveyor according to any one of claims 1 to 8, wherein the brush portion is disposed at a position where at least the moving handrail is drawn.   The escalator provided with the inlet safety device of the passenger conveyor as described in any one of Claims 1 thru | or 9.

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