JP2008156084A - Inlet safety device of passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inlet safety device of a passenger conveyor having improved safety. <P>SOLUTION: This inlet safety device comprises an inlet member 11 covering the outer periphery of a moving handrail 5 at the position where the moving handrail 5 approaches a skirt part 6 and movable in the moving direction h of the moving handrail 5, an inlet support member 12 secured to the inlet member 11, a fixed member 13 fixed to an escalator body side, two plate springs 14 interposed between the inlet support member 12 and the fixed member 13 generally parallel to each other, and a safety switch 15 for detecting the displacement of the inlet member 11 in the moving direction h of the moving handrail 5. The two plate springs 14 guide the movement of the inlet member 11 in the moving direction h of the moving handrail 5 while displacing in the direction that the gap between the outer surface 5a of the moving handrail 5 and the inner surface of the inlet member 11 opposed thereto is reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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

  The escalator, which is a passenger conveyor, includes a truss structure disposed between the upper floor and the lower floor, a number of endlessly connected steps that circulate in the truss structure, and the width of the steps. A pair of balustrades erected on both sides in the direction, a pair of endless moving handrails that are attached to the peripheral edges of the pair of balustrades and move in synchronization with the steps, and at each lower position of the pair of balustrades, And a pair of skirt portions provided between one entrance / exit and 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 proposed in the past as measures for preventing the skirt from getting caught.

  Hereinafter, the prior art will be described. As a first prior art, as shown in FIG. 14, the inlet safety device 100 includes an inlet member 103 that covers the outer periphery of the moving handrail 102 at a position where the moving handrail 102 enters the skirt portion 101, and the skirt portion 101. And a safety switch 104 that detects the displacement of the lower portion of the inlet member 103. The inlet member 103 is supported by the skirt portion 101 via the hinge portion 105 at the upper end portion 103a (see, for example, Patent Document 1).

  In the above configuration, when a foreign object such as a user's finger approaches the skirt portion 101 as the moving handrail 102 moves, the inlet member 103 is pressed against the inlet member 103 and pushed. With this pressing force, the inlet member 103 swings in the direction of arrow a with the hinge portion 105 as a fulcrum. This is detected by the safety switch 104, and the operation of the escalator is decelerated and stopped. Accordingly, it is possible to prevent a foreign matter such as a user's finger from being caught in the gap between the moving handrail 102 and the inlet member 103.

  As a second conventional technique, as shown in FIG. 15, the inlet safety device 110 includes an inlet member 113 that covers the outer periphery of the moving handrail 112 at a position where the moving handrail 112 enters the skirt portion 111, and an inlet member 113. A slide guard member 114 that is arranged so as to cover the outer periphery of the inlet member 113 and guides the sliding of the moving handrail 112 of the inlet member 113 in the moving direction b, and is interposed between the slide guard member 114 and the inlet member 113, A spring 115 that urges 113 in the direction opposite to the moving direction b of the moving handrail 112 and a safety switch 116 that detects the displacement of the inlet member 113 in the moving direction b of the moving handrail 112 are provided (Patent Literature). 2).

  In the above configuration, when a foreign object such as a user's finger approaches the skirt 111 as the moving handrail 112 moves, the inlet member 113 is pressed against the inlet member 113. With this pressing force, the inlet member 113 slides against the spring force of the spring 115. This is detected by the safety switch 116 and the operation of the escalator is stopped. This prevents a foreign matter such as a user's finger from being caught in the gap between the moving handrail 112 and the inlet member 113.

  As a third prior art, as shown in FIG. 16, the inlet safety device 120 includes an inlet member 123 that covers the outer periphery of the moving handrail 122 at a position where the moving handrail 122 enters the skirt portion 121, and an inlet member 123. The flexible plate member 126 is fixed to the upper end portion of the skirt portion 121 with the bolt 124 and the lower end portion is fixed to the skirt portion 121 with the bolt 125, and is interposed between the flexible plate member 126 and the lower portion of the inlet member 123. A spring 127 that urges the lower portion to the opposite side of the moving direction c of the moving handrail 122, the inlet member 123 is displaced in the direction of the arrow d by the bending deformation of the bending plate member 126, and the lower portion of the inlet member 123 is the spring 127 When displacement occurs in the direction of the arrow e against the spring force, these displacements are detected via the detection piece 128. And a safety switch 129 (see Patent Document 3).

  In the configuration described above, when a foreign object such as a user's finger approaches the skirt portion 121 as the moving handrail 122 moves, the inlet member 123 is first hit and the inlet member 123 is pushed. Here, when the upper side of the inlet member 123 is pressed, the bending plate member 126 is bent in the direction of the arrow d and the inlet member 123 is displaced in the moving direction of the moving handrail 122. When the lower side of the inlet member 123 is pushed, the lower portion of the inlet member 123 is displaced in the direction of arrow e against the spring force of the spring 127. Any of these displacements is detected by the safety switch 129, and the operation of the escalator is stopped. This prevents a foreign matter such as a user's finger from being caught in the gap between the moving handrail and the inlet member.

As described above, in the first to third conventional examples, a foreign object such as a user's finger hits the front end surface of the inlet members 103, 113, 123, and the inlet members 103, 113, 123 and the moving handrails 102.112, 122 If it does not enter the gap, it will operate safely.
JP-A-7-196278 JP-A-8-198570 JP-A-8-198570

  However, the inlet members 103, 113, and 123 are installed with a predetermined gap for reasons such as avoiding contact due to vibration of the moving handrails 102.112 and 122 with respect to the moving handrails 102.112 and 122. Therefore, the inlet is positioned at a position where foreign objects such as a user's finger enter the gap between the outer surfaces 102a, 112a, 122a of the moving handrails 102.112, 122 and the inner surfaces of the inlet members 103, 113, 123 opposite to the outer surfaces 102a, 112a, 122a. A situation of hitting the members 103, 113, 123 is assumed.

  In the first prior art, since the inlet member 103 rotates with the hinge portion 105 at the upper end thereof as a fulcrum, if the foreign object hits the inlet member 103 as described above, it is displaced in a direction to widen the gap. There is a possibility that foreign matter is drawn into the gap between the inlet member 103 and the moving handrail 102. In the second prior art, there is a gap for ensuring smooth sliding of the inlet member 113 between the inlet member 113 and the slide guard member 114, so that the foreign object is brought into contact with the inlet member 113 as described above. Then, the gap is displaced in the direction of widening, and there is a possibility that foreign matter is drawn into the gap between the inlet member 113 and the moving handrail 112. In the third prior art, since the inlet member 123 is supported by the deflecting plate member 126, when the foreign matter strikes the inlet member 123 as described above, the above-described gap is caused by the deformation of the deflecting plate member 126. There is a possibility that the foreign material will be drawn into the gap between the inlet member 123 and the moving handrail 122 due to displacement in the spreading direction.

  As described above, in the first to third prior arts, the user's finger is placed in the gap between the outer surfaces 102a, 112a, 122a of the moving handrails 102.112, 122 and the inner surfaces of the inlet members 103, 113, 123 opposed to the outer surfaces 102a, 112a, 122a. The possibility of entering etc. cannot be denied.

  Further, in the first to third prior arts, the inlet safety devices 100, 110, 120 are provided in the skirt portion below the inlet members 103, 113, 123, and the inlet safety device 100, The occupied space of 110 and 120 is large. Thus, even if an information display device such as a display is installed at the lower part of the skirt, the inlet safety devices 100, 110, and 120 interfere with each other, so that it is difficult to install the information display device.

  Therefore, the present invention can ensure safety even when the user strikes the inlet member at a position where a user's finger or a foreign object enters the gap between the outer surface of the moving handrail and the inner surface of the inlet member facing the moving handrail. An object of the present invention is to provide an inlet safety device for a passenger conveyor having a compact structure.

  A first feature of the present invention is an inlet member that covers an outer periphery of the moving handrail at a position where the moving handrail enters the skirt portion, and that is movable in a moving direction of the moving handrail, An urging means for urging the inlet member in a direction opposite to the moving direction of the moving handrail, an inlet supporting member fixed to the inlet member and a fixing member fixed to the conveyor body side, It consists of a plurality of elastic bodies arranged substantially in parallel, and moves the inlet member in the moving direction of the moving handrail through a gap between the outer surface of the moving handrail and the inner surface of the inlet member facing it. Inlet movement guide means for guiding while displacing in the narrowing direction, and a safety switch for detecting displacement of the moving handrail in the moving direction of the inlet member are required. To.

  The second feature of the present invention is that an inlet member that covers an outer periphery of the moving handrail at a position where the moving handrail enters the skirt portion and is movable in the moving direction of the moving handrail, An urging means for urging the inlet member in a direction opposite to the moving direction of the moving handrail, and an inlet support member fixed to the inlet member and a fixing member fixed to the conveyor body side are connected to each other. It is composed of a plurality of link members arranged substantially in parallel, and moves the inlet member in the moving direction of the moving handrail through a gap between the outer surface of the moving handrail and the inner surface of the inlet member facing it. Inlet movement guide means for guiding while displacing in the narrowing direction, and a safety switch for detecting displacement of the inlet member in the moving direction of the moving handrail. And effect.

  According to the present invention, when the inlet member hits the inlet member at a position where a foreign object such as a user's finger enters the gap between the outer surface of the moving handrail and the inner surface of the inlet member facing the moving handrail, the inlet member moves. In this movement, the inlet member moves while being displaced in the direction of narrowing the gap by the inlet movement guide means, so that a foreign object such as a user's finger is placed in the gap between the inlet member and the moving handrail. It does not go deep. Therefore, safety can be ensured even when a foreign object such as a user's finger enters the gap between the outer surface of the moving handrail and the inner surface of the inlet member facing the moving handrail.

  In addition, according to the present invention, since the inlet safety device does not interfere with the skirt portion below the inlet member, for example, an information display device can be installed on the skirt portion below the inlet member. For example, information such as caution information can be recognized.

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

(First embodiment)
1 to 7 show a first embodiment to which an inlet safety device for passenger conveyors according to the present invention is applied, FIG. 1 is a schematic side view of an escalator, FIG. 2 is a view as viewed from an arrow A in FIG. Is a front view of the inlet safety device, FIG. 4 is a side view of the inlet safety device, FIG. 5 is a plan view of the inlet safety device, FIG. 6 is a side view showing a state where the inlet member is displaced, and FIG. It is a top view which shows a state.

  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 FIG. 2, the skirt portion 6 covers the inner side of the balustrade 4 on the step 3 side and protects the user's feet, the outer deck portion 6 b that covers the outer side of the balustrade 4, and the inner side It is comprised from the front plate 6c which covers the inner side of each end surface in the longitudinal direction both sides position of the deck part 6a and the outer deck part 6b, ie, the position of the entrance / exit of both an upper floor and a lower floor. Protruding portions 6d are respectively provided on the front plates 6c at the entrance / exit positions on both the upper floor and the lower floor. A balustrade / handrail hole 7 for passing the balustrade 4 and the moving handrail 5 upward from each of the protrusions 6d is formed. 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 FIGS. 3 to 5, the inlet safety device 10 is accommodated in the balustrade / handrail hole 7 of the front plate 6c, and only a part of the tip (about 5 mm) is external to the protrusion 6d of the front plate 6c. , The inlet support member 12 fixed to the rear end of the inlet member 11, the fixing member 13 fixed to the escalator main body (conveyor main body) side, the inlet support member 12 and the fixing member 13 Two leaf springs 14 as elastic bodies, which are inlet movement guide means interposed therebetween, are fixed on the fixing member 13 and detect the displacement of the inlet member 11 in the direction of the arrow h via the inlet support member 13. And a safety switch 15.

  The inlet member 11 is made of rubber and has a C-shaped cross section so as to surround the outer periphery of the moving handrail 5 having a C-shaped cross section. The inlet member 11 is provided so as to be movable in the moving direction h of the moving handrail 5.

  The inlet support member 12 has an inlet fixing side plate portion 12a fixed to the rear surface of the inlet member 11, and a front side fixed to the inlet fixing side plate portion 12a and arranged so as to be orthogonal to the inlet fixing side plate portion 12a. It is comprised from the character-shaped main-body plate part 12b. The central flat surface of the main body plate portion 12b is disposed in parallel with the fixing member 13 at a distance.

  The fixing member 13 has left and right standing pieces 13a, and adjustment bolts 16 and 17 are provided on the standing pieces 13a, respectively. The two adjustment bolts 16 and 17 regulate the movement range of the inlet member 11 by the interference of the inlet support member 12.

  The two leaf springs 14 are arranged substantially parallel to each other in a state where they are inclined with respect to the main body plate portion 12 b and the fixing member 13 arranged in parallel. That is, the main body plate portion 12b, the fixing member 13, and the two leaf springs 14 are arranged in a parallelogram shape. When the inlet member 11 is displaced in the moving direction of the moving handrail 5, the inlet member 11 is bent and deformed in the direction of arrow i (shown in FIG. 6), and the movement of the moving handrail 5 in the moving direction h of the inlet member 11 is allowed. Further, during this movement, the two leaf springs 14 are deflected and displaced in the direction of increasing the inclination angle between the main body plate portion 12b and the fixing member 13 (the direction of 90 degrees). The guide is performed while displacing in the direction of narrowing the gap g between the surface 5a and the inner surface of the inlet member 11 facing the surface 5a. The two leaf springs 14 also serve as urging means for urging the inlet member 12 in the direction opposite to the moving direction h of the moving handrail 5.

  The safety switch 15 detects the displacement of the moving handrail 5 of the inlet member 11 in the moving direction h, and outputs this detection information to a drive control unit (not shown) of the escalator 1. Upon receiving the movement information of the inlet member 11 from the safety switch 15, the drive control unit immediately stops the escalator 1 in an emergency.

  Next, the operation of the inlet safety device 10 will be described. When a foreign object such as a user's finger approaches the skirt portion 6 with the movement of the moving handrail 5, it first hits the inlet member 11 and pushes the inlet member 11. With this pressing force, the inlet member 11 moves in the moving direction h of the moving handrail 5 against the spring force of the two leaf springs 14, and this is detected by the safety switch 15. Then, the operation of the escalator 1 is stopped. This prevents foreign matter such as a user's finger from being caught in the gap g between the moving handrail 5 and the inlet member 11.

  In the above operation process, when a foreign object such as a user's finger hits the inlet member 11 at a position where it enters the gap g between the outer surface 5a of the moving handrail 5 and the inner surface of the inlet member 11 opposite to the outer surface 5a, When the inlet hand 11 moves in the moving direction h of the handrail 5, as shown in FIGS. 6 and 7, the inlet member 11 is displaced in the direction of narrowing the gap g by the guides of the two leaf springs 14 described above. Move while. Therefore, a foreign object such as a user's finger does not enter the gap g between the inlet member 11 and the moving handrail 5 deeply.

  As described above, safety is ensured even when the foreign object such as a user's finger hits the inlet member 11 in a gap g between the outer surface 5a of the handrail 5 and the inner surface of the inlet member 11 opposed thereto. It can be secured.

  Moreover, since the inlet safety device 10 can be compactly arranged around the moving handrail 5 in the skirt portion 6, it is located in the area E (shown in FIG. 2) of the front plate 6c below the place where the moving handrail 5 enters. For example, an information display device can be installed. The information display device is a display that displays attention information and various types of information for passengers. For this reason, in this Embodiment, while improving safety by the inlet safety device 10, an information display apparatus can make a passenger | crew / reception aware of caution information etc., and the escalator which improved safety | security more is realizable.

  In the first embodiment, the inlet movement guide means is interposed between the inlet support member 12 fixed to the inlet member 11 and the fixing member 13 fixed to the escalator body side, and is arranged substantially parallel to each other. There are two leaf springs 14. Therefore, the inlet movement guide means can be configured simply. Further, since the two leaf springs 14 also serve as urging means for urging the inlet member 11 in the direction opposite to the moving direction h of the moving handrail 5, the number of parts is reduced and the structure of the inlet safety device 10 is simple. Become. Further, three or more leaf springs 14 may be arranged in parallel.

(Second Embodiment)
8 to 11 show an inlet safety device according to a second embodiment of the present invention, FIG. 8 is a side view of the inlet safety device, FIG. 9 is a plan view of the inlet safety device, and FIG. 10 is a displacement of the inlet member. FIG. 11 is a plan view showing a state where the inlet member is displaced.

  The inlet safety device 20 according to the second embodiment is accommodated in the balustrade / handrail hole 7 of the front plate 6c, and only a part of the tip (about 5 mm) is outside the protruding portion 6d of the front plate 6c. The protruding inlet member 21, the inlet support member 22 fixed to the rear end of the inlet member 21, the fixing member 23 fixed to the escalator main body (conveyor main body) side, and between the inlet support member 22 and the fixing member 23 Two sets of link members 24 that are inlet movement guide means for connecting the two, a tension spring 25 that is an urging means for urging the inlet member 21 in the direction opposite to the moving direction h of the moving handrail 5, and the fixing member 23 And a safety switch 26 that detects the displacement of the inlet member 21 in the direction of the arrow h via the inlet support member 23.

  The inlet member 21 is made of rubber and has a C-shaped cross section so as to surround the outer periphery of the moving handrail 5 having a C-shaped cross section. The inlet member 21 is provided movably in the moving direction h of the moving handrail 5.

  The inlet support member 22 includes a base plate portion 22a and a pair of left and right side plate portions 22b erected by bending from both ends of the base plate portion 22a. The front ends of the pair of side plates 22b are fixed to the rear surface of the inlet member 21.

  The fixing member 23 is provided with a base plate portion 23a, a pair of left and right front side plate portions 23b erected by bending from both ends of the front portion of the base plate portion 23a, and a lower portion of the base plate portion 23a by bending from both ends of the rear portion. And a pair of left and right rear side plate portions 23c. A pair of restricting pins 27 are provided below the left and right portions of the base plate portion 23a. Each regulation pin 27 is inserted into a regulation hole 28 of the base plate portion 22 a of the inlet support member 22. The movement range of the inlet member 21 is restricted by allowing the restriction pin 27 to move only within the restriction hole 28.

  The two link members 24 of each set connect between the pair of side surface plate portions 22a of the inlet support member 22 and the pair of front side surface plate portions 23b of the fixing member 23, and are substantially parallel in an inclined state. Is arranged. That is, the side plate portion 22a, the front side plate portion 23b, and the two link members 24 form a parallelogram link mechanism. When the inlet member 21 is displaced in the moving direction h of the moving handrail 5, the inlet member 21 rotates in the direction of arrow j (shown in FIG. 10), and the movement of the moving handrail 5 in the moving direction h of the inlet member 21 is allowed. Further, during this movement, the two link members 24 of each group rotate in the direction of increasing the inclination angle between the side plate portion 22a and the front side plate portion 23b (direction of 90 degrees). The guide is performed while displacing the gap g between the outer surface 5a of the handrail 5 and the inner surface of the inlet member 21 opposed to the outer surface 5a.

  The tension springs 25 are respectively interposed between the rear ends of both sides of the base plate portion 22 a of the inlet support member 22 and the connecting pins 24 a between the left and right link members 24.

  The safety switch 26 detects the displacement of the moving handrail 5 of the inlet member 21 in the moving direction h, and outputs this detection information to a drive control unit (not shown) of the escalator. When receiving the movement information of the inlet member 11 from the safety switch 26, the drive control unit immediately stops the escalator.

  Next, the operation of the inlet safety device 20 will be described. When a foreign object such as a user's finger approaches the skirt portion 6 with the movement of the moving handrail 5, it first hits the inlet member 21 and pushes the inlet member 21. With this pressing force, the inlet member 21 moves in the moving direction h of the moving handrail 5 against the spring force of the tension spring 25, and this is detected by the safety switch 15. Then, the operation of the escalator is stopped. This prevents foreign matter such as a user's finger from being caught in the gap g between the moving handrail 5 and the inlet member 21.

  In the above operation process, when a foreign object such as a user's finger hits the inlet member 21 at a position where it enters the gap g between the outer surface 5a of the moving handrail 5 and the inner surface of the inlet member 21 opposite to the outer surface 5a, When the inlet member 21 moves in the moving direction h of the moving handrail 5, as shown in FIGS. 10 and 11, the inlet member 21 is displaced in the direction of narrowing the gap g by the guides of the two link members 24 described above. Move while. Therefore, a foreign object such as a user's finger does not enter deeply into the gap g between the inlet member 21 and the moving handrail 5.

  As described above, safety is ensured even when the foreign object such as a user's finger hits the inlet member 21 in a gap g between the outer surface 5a of the moving handrail 5 and the inner surface of the inlet member 21 opposed thereto. It can be secured.

  In the second embodiment, the inlet movement guide means connects between the inlet support member 22 fixed to the inlet member 21 and the fixing member 23 fixed to the escalator body side, and is arranged substantially parallel to each other. Two link members 24. Therefore, the inlet movement guide means can be configured simply. Three or more link members 24 in each group may be arranged in parallel.

  In the second embodiment, since the two link members 24 are provided at the left and right positions of the inlet support member 22 and the fixing member 23, the inlet support member 22 is moved together with the inlet member 21 by the moving handrail 5. It can move smoothly in the direction h.

(Third embodiment)
12 and 13 show a third embodiment of the present invention. FIG. 12 is a side view of the inlet safety device, and FIG. 13 is a plan view of the inlet safety device.

  Similar to the inlet safety device 20 according to the second embodiment, the inlet safety device 30 according to the third embodiment is accommodated in the balustrade / handrail hole 7 of the front plate 6c, and is partially tipped. Only (about 5 mm) are protruded to the outside from the protruding portion 6d of the front plate 6c, the inlet support member 32 fixed to the rear end portion of the inlet member 31, and the escalator main body (conveyor main body) side. The fixed member 33 fixed, the two sets of link members 34 serving as inlet movement guide means for connecting the inlet support member 32 and the fixed member 33, and the inlet member 31 in the direction opposite to the moving direction h of the moving handrail 5 A tension spring 35, which is a biasing means for biasing, is fixed on the fixing member 33, and an arrow h of the inlet member 31 via the inlet support member 33. And a safety switch 36 for detecting the displacement of the direction. The basic structure is the same as in the second embodiment. However, in the second embodiment, the two sets of link members 24 are arranged on both sides of the moving handrail 5, but in the third embodiment, the two sets of link members 34 are moved. 5 is different in that it is arranged at a lower position. Although the configuration of each part is different in order to arrange the two sets of link members 34 in such an arrangement, the detailed description of the structure is omitted because they are functionally the same.

  Also in the inlet safety device 30 according to the third embodiment, as in the second embodiment, it is used for the gap g between the outer surface 5a of the moving handrail 5 and the inner surface of the inlet member 31 facing this. The safety can be ensured even when it hits the inlet member 31 at a position where a foreign object such as a person's finger enters.

In the case of the second embodiment, since the two link members 24 are provided on both sides of the moving handrail 5, the space below the moving handrail 5 in the skirt portion 6 is set to the other space. It can be used as a part installation space. In the case of the third embodiment, since the two link members 34 are provided below the movable handrail 5, the left and right side spaces of the movable handrail 5 in the skirt portion 6 are other than that. It can be used as a part installation space.
In addition, in embodiment, although inlet safety device 10,20,30 was applied to the escalator 1 which is a passenger conveyor, it is needless to say that it can apply to passenger conveyors other than the escalator 1, for example, a moving walkway.

The schematic side view of the escalator which concerns on the 1st Embodiment of this invention. The A arrow directional view of FIG. The front view of the inlet safety device which concerns on the 1st Embodiment of this invention. The side view of the inlet safety device which concerns on the 1st Embodiment of this invention. The top view of the inlet safety device which concerns on the 1st Embodiment of this invention. It is a side view which shows the state which the inlet member displaced. The top view which shows the state which the inlet member displaced. The side view of the inlet safety device which concerns on the 2nd Embodiment of this invention. The top view of the inlet safety device which concerns on the 2nd Embodiment of this invention. It is a side view which shows the state which the inlet member displaced. The top view which shows the state which the inlet member displaced. The side view of the inlet safety device which concerns on the 3rd Embodiment of this invention. The top view of the inlet safety device which concerns on the 3rd Embodiment of this invention. The partially broken side view of the inlet safety device of the 1st prior art example. The side view of the inlet safety device of the 2nd prior art example. Sectional drawing of the inlet safety device of a 3rd prior art example.

Explanation of symbols

1 Escalator (passenger conveyor)
DESCRIPTION OF SYMBOLS 5 Moving handrail 5a Outer surface 6 Skirt part 10,20,30 Inlet safety device 11,21,31 Inlet member 12,22,32 Inlet support member 13,23,33 Fixed member 14 Leaf spring (inlet movement guide means, attached Means)
15, 26, 36 Safety switch 24, 34 Link member (inlet movement guide means)
25, 35 tension spring (biasing means)

Claims (3)

An inlet member that covers an outer periphery of the moving handrail at a position where the moving handrail enters the skirt portion, and is movable in a moving direction of the moving handrail;
A biasing means for biasing the inlet member in a direction opposite to a moving direction of the moving handrail;
It is interposed between an inlet support member fixed to the inlet member and a fixing member fixed to the conveyor body side, and is composed of a plurality of elastic bodies arranged substantially parallel to each other, and the moving handrail of the inlet member Inlet movement guide means for guiding movement in the movement direction while displacing in a direction to narrow a gap between the outer surface of the moving handrail and the inner surface of the inlet member opposed thereto;
A safety switch for detecting displacement of the moving handrail of the inlet member in the moving direction;
An inlet safety device for a passenger conveyor, comprising: An inlet member that covers an outer periphery of the moving handrail at a position where the moving handrail enters the skirt portion, and is provided to be movable in a moving direction of the moving handrail;
A biasing means for biasing the inlet member in a direction opposite to a moving direction of the moving handrail;
The inlet supporting member fixed to the inlet member and the fixing member fixed to the conveyor main body side are connected to each other, and are composed of a plurality of link members arranged substantially in parallel to each other. Inlet movement guide means for guiding movement in the movement direction while displacing in a direction to narrow a gap between the outer surface of the moving handrail and the inner surface of the inlet member opposed thereto;
A safety switch for detecting displacement of the moving handrail of the inlet member in the moving direction;
An inlet safety device for a passenger conveyor, comprising:   The inlet safety device for a passenger conveyor according to claim 2, wherein the plurality of link members are respectively provided at both side positions of the inlet support member and the fixing member.

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