JP2009084014A - Inlet safety device of passenger conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inlet safety device for a passenger conveyer capable of relieving pressure of a foreign matter during entry of the foreign matter. <P>SOLUTION: The inlet safety device 10 for a passenger conveyer includes a guide mechanism 14 provided nearer to a traveling direction h side of a traveling handrail 5 than an inlet member 11. The inlet member 11 is structured to be rotatable in a direction widening a clearance g between an outer surface of the traveling handrail 5 and an inner wall of the inlet member 11 facing the outer surface, with a position of the guide mechanism 14 as a fulcrum. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an inlet safety device for passenger conveyors.

  Conventionally, in a passenger conveyor (for example, an escalator), a moving handrail on which a passenger puts a hand or the like appears outside from the skirt portion on the entrance side, and is drawn into the skirt portion on the exit side after moving to the exit side. The moving handrail drawn into the skirt part appears outside from the skirt part on the entrance side again after passing through the skirt part. Since it is such a structure, when a moving handrail is drawn in to a skirt part, foreign objects, such as a passenger's finger | toe, may be caught in a skirt part.

  In view of this, an inlet safety device has been proposed as a countermeasure against entrainment in the skirt. In this apparatus, an inlet member made of rubber or the like is provided at a position where the moving handrail enters the skirt portion. The inlet member is movable in the moving direction of the moving handrail, and when the foreign object is caught in the skirt portion, the inlet member moves in the moving direction of the moving handrail. Also, a safety switch is provided in the skirt, and when the inlet member moves in the moving direction of the moving handrail, the safety switch detects this movement and the passenger conveyor is decelerated or stopped.

Furthermore, an inlet safety device has been proposed in which the foreign matter involved is prevented from being pressed by the inlet member. In this device, a hinge and a spring are provided on the inlet member, and when the foreign object enters the inlet member, the inlet member rotates in a direction away from the moving handrail, so that pressure on the foreign object is suppressed. (See Patent Document 1).
JP 2005-323480 A

  However, according to the inlet safety device described in Patent Document 1, when the foreign material enters the inlet member, the inlet member rotates in a direction away from the moving handrail, but the inlet member itself has a rotation center. ing. For this reason, since the distance between the foreign matter and the rotation center is short when the foreign matter enters, it cannot be said that the pressure of the foreign matter when the foreign matter enters is sufficiently reduced.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide an inlet safety device for a passenger conveyor that can further reduce the pressure on the foreign object when the foreign object enters. It is to provide.

  An inlet safety device for a passenger conveyor according to the present invention covers an outer periphery of a moving handrail at a position where the moving handrail enters the skirt portion, and is attached to the inlet member movably attached in the moving direction of the moving handrail. An inlet support member that is fixed and moves in the movement direction as the inlet member moves in the movement direction, and is provided closer to the movement direction than the inlet member, and the inlet member moves in the movement direction. A guide mechanism for guiding the support member to move in the moving direction; and a switch for detecting the movement when the inlet support member moves in the moving direction. Further, the inlet member is rotatable in the direction of widening the gap between the outer surface of the moving handrail and the inner wall of the inlet member facing the outer surface with the position of the guide mechanism as a fulcrum.

  According to the passenger conveyor inlet safety device of the present invention, the guide mechanism is provided closer to the moving direction than the inlet member, and the inlet member has the position of the guide mechanism as a fulcrum, and the outer surface of the moving handrail and the outer surface. It can be rotated in the direction of widening the gap with the inner wall of the inlet member that faces. For this reason, the rotation center of the inlet member is located away from the inlet member, and the distance between the foreign object and the rotation center can be increased when the foreign object enters. Thereby, the inlet member can be easily rotated in accordance with the entry of the foreign matter, and the pressure of the foreign matter when the foreign matter enters can be further reduced.

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

(First embodiment)
FIG. 1 is a schematic side view of an escalator including an inlet safety device according to a first embodiment of the present invention. In addition, in FIG. 1, although an escalator is illustrated as an example of a passenger conveyor, a passenger conveyor is not restricted to an escalator, If it is a conveyor apparatus provided with the moving handrail which conveys passengers, such as a moving sidewalk, it is other things. There may be.

  As shown in FIG. 1, the passenger conveyor 1 mainly includes a truss structure 2, a number of steps 3, a pair of balustrades 4, a moving handrail 5, a pair of skirt parts 6, and an inlet safety device 10. It has become. The truss structure body 2 is a framework having a structure in which a triangle is a basic unit, which is arranged between an upper floor and a lower floor. A number of steps 3 are connected endlessly and circulate in the truss structure 2 to carry passengers in a stationary state. The pair of balustrades 4 are provided at both side positions of the step 3 in the width direction, and have a role of preventing passengers from falling off the step 3 in the width direction. The moving handrail 5 is mounted on each of the peripheral portions of the pair of balustrades 4 and moves in synchronization with the steps. The pair of skirt portions 6 covers the lower positions of the pair of balustrades 4 and is provided between the entrance / exit on the upper floor and the entrance / exit on the lower floor.

  FIG. 2 is a view taken in the direction of arrow A in FIG. For the sake of illustration, the moving handrail 5 is shown in cross section in FIG. As shown in FIG. 2, the skirt portion 6 includes an inner deck portion 6a, an outer deck portion 6b, a front plate 6c, and a protruding portion 6d. The inner deck portion 6a covers the step 3 side (inner side) of the pair of balustrades 4 and protects passengers' feet. The outer deck portion 6 b covers the outside of the pair of balustrades 4. The front plate 6c covers the longitudinal end positions of the inner deck portion 6a and the outer deck portion 6b. That is, the front plate 6c covers each end face at the entrance and exit positions of both the upper floor and the lower floor. The protruding portion 6 d is provided to protrude from the front plate 6 c in the longitudinal direction of the skirt portion 6. A balustrade / handrail hole 7 for passing the balustrade 4 and the moving handrail 5 is formed in the protruding portion 6d.

  The inlet safety device 10 is a device for preventing foreign matter from getting into the skirt portion 6, and is provided around the balustrade / handrail hole 7 and inside the skirt portion 6. FIG. 3 is a side view of the inlet safety device 10 shown in FIG. In addition, on the relationship of illustration, in FIG. 3, while the moving handrail 5 is shown with a dashed-two dotted line, a part structure shall show a cross section.

  As shown in FIG. 3, the inlet safety device 10 includes an inlet member 11, an inlet support member 12, a biasing member 13, a guide mechanism 14, a safety switch 15, and a holding mechanism 16. The inlet member 11 surrounds the outer periphery of the moving handrail 5 at a position where the moving handrail 5 enters the skirt portion 6. Specifically, the inlet member 11 is a member made of, for example, a rubber material having a C-shaped cross section (FIG. 2), such that the moving handrail 5 having a C-shaped cross section and the open side of the C-shape are directed in the same direction. The moving handrail 5 is enclosed. Moreover, the inlet member 11 is accommodated in the balustrade / handrail hole 7 and has a shape in which a part (about 5 mm) on the front end 11a side protrudes outside from the protruding portion 6d of the front plate 6c. Further, the inlet member 11 is attached to be movable in the moving direction h of the moving handrail 5.

  The inlet support member 12 is fixed to the rear end of the inlet member 11 (in the moving direction h side of the moving handrail 5), and similarly moves in the moving direction h as the inlet member 11 moves in the direction h. is there. The inlet support member 12 includes an inlet fixing side plate 12a and a main body plate (flat plate member) 12b. The inlet fixing side plate 12 a is a flat plate that is fixed to the rear surface of the inlet member 11 with screws or the like and is perpendicular to the moving direction h of the moving handrail 5. The main body plate 12b is a flat plate arranged in a direction orthogonal to the inlet fixing side plate 12a, that is, parallel to the moving direction h of the moving handrail 5.

  The urging member 13 is a spring that urges the inlet support member 12 in the direction opposite to the moving direction h, and is attached to the base plate 6e. The base plate 6e is fixed to, for example, the inner wall of the skirt portion 6. The guide mechanism 14 is provided on the moving direction h side with respect to the inlet member 11 and guides the inlet supporting member 12 to move in the moving direction h as the inlet member 11 moves. The safety switch 15 detects the movement of the inlet support member 12 when it moves in the movement direction h. That is, when the foreign matter enters the gap g between the outer surface of the moving handrail 5 and the inner wall of the inlet member 11 facing the outer surface and the inlet member 11 moves in the moving direction h, the safety switch 15 By detecting the movement, the entry of a foreign object is detected. Further, when detecting the movement of the inlet support member 12, the safety switch 15 outputs a signal indicating that the movement of the inlet support member 12 is detected to a drive control unit (not shown). Thereby, a drive control part will decelerate or stop the driving | running of an escalator. The holding mechanism 16 keeps the position so that the inlet member 11 does not move in the moving direction h and when the force in the direction of expanding the gap g is applied to the inlet member 11, the force does not widen the gap g. is there.

  4 is a perspective view showing details of the guide mechanism 14 and the holding mechanism 16 shown in FIG. 3, and FIG. 5 is a side view showing details of the guide mechanism 14 and the holding mechanism 16 shown in FIG. As shown in FIG. 4, two long holes 12 b 1 and 12 b 2 extending in the moving direction h of the moving handrail 5 are formed in the main body plate 12 b. These long holes 12b1 and 12b2 penetrate the main body plate 12b.

  The guide mechanism 14 includes guide mechanism side guide mechanism side support rods 14a1 and 14a2 and guide members 14b1 to 14b4. The guide mechanism side support rods 14a1 and 14a2 are cylindrical members penetrating the respective long holes 12b1 and 12b2. The guide members 14b1 to 14b4 are substantially columnar members provided at both ends of the guide mechanism side support rods 14a1 and 14a2. The guide mechanism 14 is configured such that the main body plate 12b is sandwiched between the guide members 14b1 to 14b4. Due to such a configuration, the moving direction of the inlet support member 12 is limited by the long holes 12b1 and 12b2 of the main body plate 12b and the guide mechanism side support rods 14a1 and 14a2 of the guide mechanism 14, and the moving handrail 5 Will move in the moving direction h.

  As shown in FIG. 4, the main body plate 12b is formed with two second long holes 12b3 and 12b4 extending in the moving direction h of the moving handrail 5. These 2nd long holes 12b3 and 12b4 have penetrated the main body plate 12b.

  The holding mechanism 16 includes holding mechanism side support rods 16a1 and 16a2, four thin plates 16b1 to 16b4, upper spring members (first elastic members) 16c1 and 16c3, and lower spring members (second elastic members) 16c2, 16c4 and low friction coefficient materials 16d1 to 16d4. The holding mechanism side support rods 16a1 and 16a2 are cylindrical members penetrating the second long holes 12b3 and 12b4, and the thin plates 16b1 to 16b4 are circular plate members. Further, the holding mechanism side support rods 16a1 and 16a2 are attached to the upper thin plates 16b1 and 16a3 provided at one end on the upper side of the main body plate 12b and the other thin plates 16b2 and 16b4 provided on the lower side of the main body plate 12b. It is attached. Further, the upper thin plates 16b1 and 16b3 are fixed to the base plate 6e.

  The upper spring members 16c1 and 16c3 are elastic members provided between the upper thin plates 16b1 and 16b3 and the main body plate 12b, respectively. The upper spring members 16c1 and 16c3 bias the main body plate 12b in the outer peripheral direction (downward) of the moving handrail 5 from a direction orthogonal to the main body plate 12b. The lower spring member 16c2 is an elastic member provided between the lower thin plates 16b2 and 16b4 and the main body plate 12b, respectively. The lower spring members 16c2 and 16c4 urge the main body plate 12b inward (upward) of the moving handrail 5 from the opposite side of the upper spring members 16c1 and 16c3 with the main body plate 12b interposed therebetween.

  Since the holding mechanism 16 has such a configuration, the inlet support member 12 is kept in the neutral position. Thereby, it is suppressed that the inlet member 11 moves without the entrance of a foreign material, and a situation in which the gap g is widened can be suppressed. As shown in FIG. 4, the holding mechanism 16 has the second long holes 12b3 and 12b4 and the holding mechanism side support rods 16a1 and 16a2, so that the main body plate 12b is guided in the same manner as the guide mechanism 14. It has a function to do.

  Further, the low friction coefficient members 16d1 to 16d4 are members having a friction coefficient smaller than that of the thin plates 16b1 to 16b4, and are provided between the upper spring members 16c1 and 16c3 and the main body plate 12b and the lower spring members 16c2 and 16c2. 16c4 and the main body plate 12b are provided. Since the holding mechanism 16 also has a guide function as described above, the frictional force between the holding mechanism 16 and the main body plate 12b can be reduced by using the low friction coefficient materials 16d1 to 16d4. Note that through holes through which the holding mechanism side support rods 16a1 and 16a2 pass are formed in the low friction coefficient materials 16d1 to 16d4.

  Here, as shown in FIG. 5, the guide members 14b1 to 14b4 according to the first embodiment are configured such that the distance from the main body plate 12b gradually increases from the moving direction h side of the moving handrail 5 to the opposite side. It has become. With this configuration, the inlet support member 12 and the inlet member 11 fixed to the inlet support member 12 are rotatable with the end portions P1 and P2 on the movement direction h side of the guide members 14b1 to 14b4 as fulcrums.

  Next, the operation of the inlet safety device 10 according to the first embodiment will be described with reference to FIG. FIG. 6 is a side view for explaining the operation of the inlet safety device 10 according to the first embodiment. When a foreign object such as a passenger's finger approaches the skirt portion 6 with the movement of the moving handrail 5, it first strikes the inlet member 11. As a result, the inlet member 11 is pushed in the moving direction h against the urging force of the urging member 13. The inlet support member 12 fixed to the inlet member 11 also moves in the movement direction h while being guided by the guide mechanism 14.

  And if the front-end | tip of the main body plate 12b pressed the switch of the safety switch 15, the safety switch 15 will output the signal to that effect to a drive control part. Thereby, a drive control part will decelerate or stop the driving | running of an escalator.

  Further, when entering the foreign object, the foreign object enters the gap g between the moving handrail 5 and the inlet member 11. For this reason, a force to widen the gap g acts on the inlet member 11. At this time, the main body plate 12b uses the end portions P1 and P2 on the moving direction h side of the guide members 14b1 to 14b4 as fulcrums and resists the biasing force of the lower spring members 16c2 and 16c4 (downward direction r in FIG. 6). ). Thereby, the gap g is widened, and it is possible to facilitate the removal of the foreign matter. Furthermore, since the rotation center of the inlet member 11 is the position of the guide mechanism 14 away from the inlet member 11, it is possible to reduce the pressing force against the foreign object as compared with the case where the rotation center exists in the vicinity of the inlet member 11. it can.

  Thus, according to the passenger conveyor inlet safety device 10 according to the first embodiment, the guide mechanism 14 is provided on the moving direction h side with respect to the inlet member 11, and the inlet member 11 is provided with the guide mechanism 14. The position is a fulcrum, so that the gap g between the outer surface of the movable handrail 5 and the inner wall of the inlet member 11 facing the outer surface can be widened. For this reason, the rotation center of the inlet member 11 is located away from the inlet member 11, and the distance between the foreign material and the rotation center can be increased when the foreign material enters. Thereby, the inlet member 11 can be easily rotated according to the entry of the foreign matter, and the pressure of the foreign matter when the foreign matter enters can be further reduced.

  In addition, when the inlet member 11 is not moved in the moving direction h and a force in a direction to widen the gap g is applied to the inlet member 11, a holding mechanism 16 is provided to maintain the position so that the gap g is not widened by this force. Therefore, when the foreign substance has not entered, it is possible to suppress the gap g from becoming wide, and to suppress the situation where the foreign substance easily enters.

  In addition, the holding mechanism 16 includes upper spring members 16c1 and 16c3 that urge the main body plate 12b from the direction orthogonal to the main body plate 12b toward the outer side of the moving handrail 5, and upper spring members 16c1 and 16c3 that sandwich the main body plate 12b. The lower spring members 16c2 and 16c4 that urge the main body plate 12b toward the inner side of the moving handrail from the opposite side. For this reason, the inlet member 11 fixed to the inlet support member 12 can be rotated by the elastic force of the springs 16c1 to 16c4 while keeping the inlet member 11 in the neutral position by the two springs 16c1 to 16c4.

  The main body plate 12b constituting the inlet support member 12 has long holes 12b1 and 12b2, and the guide mechanism 14 includes guide mechanism side support rods 14a1 and 14a2 penetrating the long holes 12b1 and 12b2, and a guide mechanism side support. The guide members 14b1 to 14b4 are provided at both ends of the rods 14a1 and 14a2. The guide members 14b1 to 14b4 are gradually spaced from the main body plate 12b from the moving direction h side of the moving handrail 5 to the opposite side. is seperated. For this reason, the distance between the guide members 14b1 to 14b4 and the main body plate 12b on the moving direction h side can be reduced, and the inlet support member 12 can be suitably guided. On the other hand, the guide members 14b1 to 14b4 have a larger distance from the main body plate 12b on the side opposite to the movement direction h, and the inlet member 11 can be suitably rotated with the movement direction h side end portions P1 and P2 as fulcrums. . Therefore, it is possible to provide a guide mechanism 14 that can suitably rotate the inlet member 11 while having a guide function.

  In the first embodiment, the upper guide members 14b1 and 14b3 are configured such that the distance from the main body plate 12 gradually increases. However, the present invention is not limited to this, and the distance may not be configured.

(Second Embodiment)
Next, the passenger safety inlet safety device 20 according to the second embodiment will be described. The inlet safety device 20 according to the second embodiment is the same as that of the first embodiment, but a part of the configuration is different. Hereinafter, differences from the first embodiment will be described.

  FIG. 7 is a side view of the inlet safety device 20 according to the second embodiment, and FIG. 8 is a perspective view showing details of the guide mechanism 24 according to the second embodiment shown in FIG. . As shown in FIGS. 7 and 8, the guide mechanism 24 according to the second embodiment has the same configuration as the holding mechanism 16 described in the first embodiment. That is, the guide mechanism 24 includes guide mechanism side support rods 24a1 and 24a2, thin plates 24b1 to 24b4, upper spring members (third elastic members) 24c1 and 24c3, and lower spring members (fourth elastic members) 24c2 and 24c4. And low friction coefficient materials 24d1 to 24d4.

  The guide mechanism side support rods 24a1 and 24a2 are cylindrical members penetrating the respective long holes 12b1 and 12b2. The thin plates 24b1 to 24b4 are circular plate materials. The guide mechanism side support rods 24a1 and 24a2 are attached to the upper thin plates 24b1 and 24b3 provided at one end of the main body plate 12b on the upper side of the main body plate 12b and the other end is provided on the lower side of the main plate 12b. It is attached to 24b2 and 24b4. Further, the upper thin plates 24b1 and 24b3 are fixed to the base plate 6e.

  The upper spring members 24c1 and 24c3 are elastic members provided between the upper thin plates 24b1 and 24b3 and the main body plate 12b, respectively. The upper spring members 24c1 and 24c3 bias the main body plate 12b in the outer peripheral direction (downward) of the moving handrail 5 from a direction orthogonal to the main body plate 12b. The lower spring member 24c2 is an elastic member provided between the lower thin plates 24b2 and 24b4 and the main body plate 12b, respectively. The lower spring members 24c2 and 24c4 urge the main body plate 12b toward the inner side (upward) of the moving handrail 5 from the opposite side of the upper spring members 24c1 and 24c3 sandwiching the main body plate 12b.

  Since the guide mechanism 24 has such a configuration, the moving direction of the inlet support member 12 is limited by the long holes 12b1 and 12b2 of the main body plate 12b and the guide mechanism side support rods 24a1 and 24a2 of the guide mechanism 24. The inlet support member 12 moves in the moving direction h of the moving handrail 5.

  Further, the low friction coefficient members 24d1 to 24d4 are members whose friction coefficients are made smaller than those of the thin plates 24b1 to 24b4, between the upper spring members 24c1 and 24c3 and the main body plate 12b, and the lower spring members 24c2 and 24c2. 24c4, respectively. Thereby, the frictional force between the guide mechanism 24 and the main body plate 12b can be reduced. The low friction coefficient members 24d1 to 24d4 are formed with through holes through which the guide mechanism side support rods 24a1 and 24a2 pass.

  Further, in the second embodiment, the upper spring members 24c1, 24c3 and the lower spring members 24c2, 24c4 of the guide mechanism 24 are more elastic than the upper spring members 16c1, 16c3 and the lower spring members 16c2, 16c4 of the holding mechanism 16. The spring coefficient as a coefficient is high.

  Next, the operation of the inlet safety device 20 according to the second embodiment will be described. When a foreign object such as a passenger's finger approaches the skirt portion 6 with the movement of the moving handrail 5, it first strikes the inlet member 11. As a result, the inlet member 11 is pushed in the moving direction h against the urging force of the urging member 13. The inlet support member 12 fixed to the inlet member 11 also moves in the movement direction h while being guided by the guide mechanism 24.

  And if the front-end | tip of the main body plate 12b pressed the switch of the safety switch 15, the safety switch 15 will output the signal to that effect to a drive control part. Thereby, a drive control part will decelerate or stop the driving | running of an escalator.

  Further, when entering the foreign object, the foreign object enters the gap g between the moving handrail 5 and the inlet member 11. For this reason, a force to widen the gap g acts on the inlet member 11. Here, the upper spring members 24c1 and 24c3 and the lower spring members 24c2 and 24c4 of the guide mechanism 24 have higher spring coefficients than the upper spring members 16c1 and 16c3 and the lower spring members 16c2 and 16c4 of the holding mechanism 16. . Therefore, the lower spring members 24c2 and 24c4 of the guide mechanism 24 are less likely to be elastically deformed than the lower spring members 16c2 and 16c4 of the holding mechanism 16, and the main body plate 12b uses the guide mechanism 24 as a fulcrum, and the lower spring member It rotates downward (direction r in FIG. 6) against the urging force of 16c2 and 16c4.

  Furthermore, in the second embodiment, when vibration is applied to the inlet safety device 20, the vibration of the main body plate 12 b is caused by the spring members 24 a 1 to 24 a 4 of the guide mechanism 24 and the spring members 16 a 1 to 16 a 4 of the holding mechanism 16. Is absorbed, and it becomes difficult to damage the main body plate 12b as compared with the case where a spring or the like is not used.

  Thus, according to the passenger conveyor inlet safety device 20 according to the second embodiment, as in the first embodiment, it is possible to further reduce the pressure of the foreign matter when the foreign matter enters. In addition, since the holding mechanism 16 is provided, when the foreign matter has not entered, the gap g can be prevented from widening, and the situation where the foreign matter can easily enter can be suppressed. While maintaining the inlet member 11 in the neutral position by the two springs 16c1 to 16c4, the inlet member 11 can be rotated by the elastic force of the springs 16c1 to 16c4.

  Furthermore, according to the second embodiment, the guide mechanism 24 includes the upper spring members 24c1 and 24c3 that urge the main body plate 12b from the direction orthogonal to the main body plate 12b toward the outer side of the moving handrail 5; Lower spring members 24c2 and 24c4 that urge the main body plate 12b toward the inner side of the moving handrail 5 from the opposite side of the upper spring members 24c1 and 24c3 sandwiching the plate 12b. As described above, since the guide mechanism 24 is configured by the springs 24c1 to 24c4, the frequency with which the guide mechanism 24 damages the main body plate 12b due to vibration can be reduced. Further, since the upper spring members 24c1 and 24c3 and the lower spring members 24c2 and 24c4 have higher spring coefficients than the upper spring members 16c1 and 16c3 and the lower spring members 16c2 and 16c4, the third and lower spring members It can be made rotatable by the elastic force of the first and lower spring members 16c1 to 16c4 with 24c1 to 24c4 as the rotation center.

(Third embodiment)
Next, an inlet safety device 30 for a passenger conveyor according to a third embodiment will be described. The inlet safety device 30 according to the third embodiment is the same as that of the first embodiment, but a part of the configuration is different. Hereinafter, differences from the first embodiment will be described.

  FIG. 9 is a side view of the inlet safety device 30 according to the second embodiment, and FIG. 10 is a perspective view showing details of the holding mechanism 36 according to the second embodiment shown in FIG. . As shown in FIGS. 9 and 10, the holding mechanism 36 according to the second embodiment includes holding mechanism side support rods 36a1 and 36a2 and stopper members 36b1 to 36b4.

  The holding mechanism side support rods 36a1 and 36a2 are cylindrical members penetrating the second long holes 12b3 and 12b4. The stopper members 36b1 to 36b4 are columnar members provided at both ends of the holding mechanism side support rods 36a1 and 36a2. The upper stopper members 36b1 and 36b3 provided on the upper side of the main body plate 12b are fixed to the base plate 6e.

  In the third embodiment, the second long holes 12b3 and 12b4 are wider than those in the first embodiment, and are larger than the cylindrical stopper members 36b1 to 36b4 when viewed from the orthogonal direction. It is a hole.

  Next, the operation of the inlet safety device 30 according to the third embodiment will be described with reference to FIG. FIG. 11 is an enlarged side view of the holding mechanism 36 for explaining the operation of the inlet safety device 30 according to the third embodiment. First, it is assumed that the inlet member 11 has not moved in the moving direction h without foreign matter entering. In this case, if a force is applied in the direction r in which the gap g is widened, as shown in FIG. 11A, the main body plate 12b contacts the lower stopper members 36b2 and 36b4 provided on the lower side of the main body plate 12b. You will be in touch. As a result, the inlet member 11 can be restricted from rotating in the direction r that widens the gap g.

  Further, it is assumed that a foreign object such as a passenger's finger approaches the skirt portion 6 and hits the inlet member 11 as the moving handrail 5 moves. In this case, as shown in FIG. 11B, the main body plate 12b of the inlet support member 12 also moves in the movement direction h. In this state, if a force is applied in the direction r that widens the gap g, the main body plate 12b does not contact the lower stopper members 36b2 and 36b4. For this reason, when a foreign substance enters the inlet member 11, as shown in FIG. 11C, the main body plate 12b rotates in the direction r in which the gap g is widened.

  In this way, according to the passenger conveyor inlet safety device 30 according to the third embodiment, the pressure of the foreign object when entering the foreign object can be further reduced, as in the first embodiment. In addition, since the holding mechanism 36 is provided, when the foreign matter has not entered, the gap g can be prevented from widening, and the situation where the foreign matter can easily enter can be suppressed.

  Furthermore, according to the third embodiment, the stopper members 36b1 to 36b4 that restrict the rotation of the inlet member 11 are provided, and the stopper members 36b1 to 36b4 are provided only when the inlet member 11 moves in the movement direction h. , Release the rotation restriction. For this reason, in a state where no foreign matter enters, the inlet member 11 does not rotate reliably, and the gap g does not widen. Thereby, when the foreign material has not entered, the gap g can be prevented from widening, and the situation where the foreign material can easily enter can be reliably suppressed.

  In the third embodiment, the stopper members 36b1 to 36b4 are provided above and below the main body plate 12. However, the present invention is not limited to this, and the stopper members 36b1 to 36b4 are provided only below the main body plate 12b. It may be.

(Fourth embodiment)
Next, an inlet safety device 40 for passenger conveyors according to a fourth embodiment will be described. The inlet safety device 40 according to the fourth embodiment is the same as that of the third embodiment, but a part of the configuration is different. Hereinafter, differences from the third embodiment will be described.

  12 is a side view of the inlet safety device 40 according to the fourth embodiment, and FIG. 13 is a perspective view showing details of the holding mechanism 46 according to the fourth embodiment shown in FIG. . As shown in FIGS. 12 and 13, the holding mechanism 46 according to the fourth embodiment includes holding mechanism side support rods 46a1 and 46a2, thin plates 46b1 and 46b2, and spring members 46 (fifth elastic members) c1. 46c2, low friction coefficient materials 46d1 and 46d2, and stopper members 46e1 and 46e2.

  The holding mechanism side support rods 46a1 and 46a2 are cylindrical members penetrating the second long holes 12b3 and 12b4, and the thin plates 46b1 and 46b2 are circular plate members provided on the upper side of the main body plate 12b. The holding mechanism side support rods 46a1 and 46a2 have one end attached to the thin plates 46b1 and 46b2 and the other end attached to the stopper members 46e1 and 46e2. Further, the thin plates 46b1 and 46b2 are fixed to the base plate 6e.

  The spring members 46c1 and 46c2 are elastic members provided between the thin plates 46b1 and 46b2 and the main body plate 12b, respectively. The spring members 46c1 and 46c3 bias the main body plate 12b in the outer peripheral direction (downward) of the moving handrail 5 from a direction orthogonal to the main body plate 12b.

  The low friction coefficient members 46d1 and 46d2 are members having a smaller friction coefficient than the thin plates 46b1 and 46b2, and are provided between the spring members 46c1 and 46c2 and the main body plate 12b, respectively. For this reason, the low friction coefficient materials 46d1 and 46d2 reduce the frictional force with the main body plate 12b. The low friction coefficient members 46d1 and 46d2 are formed with through holes through which the holding mechanism side support rods 46a1 and 46a2 pass.

  The stopper members 46e1 and 46e2 are columnar members provided at the other ends of the holding mechanism side support rods 46a1 and 46a2. In the fourth embodiment, the second long holes 12b3 and 12b4 are wider than those in the first embodiment, and are larger than the cylindrical stopper members 36b1 to 36b4 when viewed from the orthogonal direction. In addition, the holes are smaller than the thin plates 46b1 and 46b2.

  Next, the operation of the inlet safety device 40 according to the fourth embodiment will be described with reference to FIG. FIG. 14 is an enlarged side view of the holding mechanism 46 for explaining the operation of the inlet safety device 40 according to the fourth embodiment. First, it is assumed that the inlet member 11 has not moved in the moving direction h without foreign matter entering. In this state, a force is applied in the direction r in which the gap g is widened by the inactive force of the spring members 46c1 and 46c2, but the main body plate 12b is in contact with the stopper members 46e1 and 46e2, as shown in FIG. . For this reason, the inlet member 11 is restricted from rotating in the direction r in which the gap g is widened.

  Further, it is assumed that a foreign object such as a passenger's finger approaches the skirt portion 6 and hits the inlet member 11 as the moving handrail 5 moves. In this case, as shown in FIG. 14B, the main body plate 12b of the inlet support member 12 moves in the movement direction h. For this reason, the main body plate 12b does not contact the stopper members 36b2 and 36b4. In this case, a force is applied in the direction r in which the gap g is widened by the spring members 46c1 and 46c2. For this reason, the main body plate 12b rotates in the direction r in which the gap g is widened regardless of human power or the like.

  Thus, according to the passenger conveyor inlet safety device 40 according to the fourth embodiment, it is possible to further reduce the pressure of the foreign object during the entry of the foreign object, as in the third embodiment. In addition, since the holding mechanism 46 is provided, when the foreign matter has not entered, the gap g can be prevented from widening, and the situation where the foreign matter can easily enter can be suppressed. Moreover, when the foreign material has not entered, the gap g can be prevented from widening, and the situation where the foreign material can easily enter can be reliably suppressed.

  Furthermore, according to the fourth embodiment, when the rotation restriction by the stopper members 46e1 and 46e2 is released, the gap g between the outer surface of the moving handrail 5 and the inner wall of the inlet member 11 facing the outer surface. Spring members 46c1 and 46c2 are provided for rotating the inlet member 11 in the direction of expanding the width of the inlet member 11. For this reason, when a foreign object enters and the inlet member 11 moves in the moving direction h of the moving handrail 5, the spring members 46c1 and 46c2 rotate the inlet member 11. As a result, when the foreign object enters, the gap g automatically expands, so that it is not necessary for a person or the like to apply a force to widen the gap g when the foreign object enters, and the removal of the foreign object can be facilitated.

(Fifth embodiment)
Next, an inlet safety device 50 for a passenger conveyor according to a fifth embodiment will be described. An inlet safety device 50 according to the fifth embodiment is the same as that of the fourth embodiment, but a part of the configuration is different. Hereinafter, differences from the fourth embodiment will be described.

  FIG. 15 is a configuration diagram illustrating details of the holding mechanism 56 according to the fifth embodiment. As shown in FIG. 15A, the holding mechanism 56 according to the fifth embodiment includes holding mechanism side support rods 56a1 and 56a2, thin plates 56b1 and 56b2, spring members 56c1 and 56c2, and a low friction coefficient material. 56d1 and 56d2 and stopper members 56e1 and 56e2. The holding mechanism side support rods 56a1 and 56a2, the thin plates 56b1 and 56b2, the spring members 56c1 and 56c2, and the low friction coefficient members 56d1 and 56d2 are the holding mechanism side support rods 46a1 and 46a2 and the thin plate 46b1 shown in the fourth embodiment. 46b2, the spring members 46c1 and 46c2, and the low friction coefficient members 46d1 and 46d2, the description thereof will be omitted.

  Further, in the fifth embodiment, the stopper members 56e1 and 56e2 are oblique cylinders with the cone tips cut off. That is, as shown in FIG. 15B, the stopper members 56e1 and 56e2 have corner portions P3 having a sharp cross section in a plane perpendicular to the main body plate 12b.

  Next, the operation of the inlet safety device 50 according to the fifth embodiment will be described with reference to FIG. FIG. 16 is an enlarged side view of the holding mechanism 56 for explaining the operation of the inlet safety device 50 according to the fifth embodiment. First, it is assumed that the inlet member 11 has not moved in the moving direction h without foreign matter entering. In this case, the rotation of the inlet member 11 is restricted by the stopper members 56e1 and 56e2.

  Further, it is assumed that a foreign object such as a passenger's finger approaches the skirt portion 6 and hits the inlet member 11 as the moving handrail 5 moves. In this case, as shown in FIG. 16B, the main body plate 12b of the inlet support member 12 moves in the movement direction h. For this reason, the rotation restriction | limiting of the inlet member 11 is cancelled | released, and the inlet member 11 is rotated in the direction which widens the clearance gap g by the spring members 56c1 and 56c2.

  Furthermore, in 5th Embodiment, when the inlet member 11 is rotated, the corner | angular part P3 contact | abuts to the inner wall of 2nd long hole 12b3, 12b4. As a result, the corner portion P3 comes into contact with the inner walls of the second long holes 12b3 and 12b4 so that the inlet member 11 can be prevented from returning in the direction in which the gap g is narrowed.

  Thus, according to the passenger conveyor inlet safety device 50 according to the fifth embodiment, it is possible to further reduce the pressure of the foreign object when entering the foreign object, as in the fourth embodiment. In addition, since the holding mechanism 56 is provided, when the foreign matter has not entered, the gap g can be prevented from widening, and the situation where the foreign matter can easily enter can be suppressed. Moreover, when the foreign material has not entered, the gap g can be prevented from widening, and the situation where the foreign material can easily enter can be reliably suppressed. In addition, when the foreign object enters, the gap g is automatically widened, so that it is not necessary for a person or the like to apply a force to widen the gap g when the foreign object enters, and the removal of the foreign object can be facilitated.

  Furthermore, according to the fifth embodiment, when the inlet member 11 is rotated by the spring members 56c1 and 56c2 in the direction of widening the gap g, the stopper members 56e1 and 56e2 are formed on the inner walls of the second long holes 12b3 and 12b4. Since the corner portion P3 comes into contact, the corner portion P3 comes into contact with the inner walls of the second long holes 12b3 and 12b4, so that the inlet member 11 is difficult to return in the direction in which the gap g is narrowed, and the removal of foreign matter is further reduced. Simplification can be achieved.

  In the fifth embodiment, the stopper members 56e1 to 56e2 are oblique cylinders, but only the side contacting the inner walls of the second long holes 12b3 and 12b4 may be an oblique cylinder. The structure which has a projection part which becomes a cross-sectional acute angle may be sufficient.

  As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and modifications may be made without departing from the spirit of the present invention. May be combined. For example, although the escalator has been described as an example of the passenger conveyor 1 in the above-described embodiment, the present invention is not limited thereto, and the passenger conveyor 1 may be another apparatus that conveys a stationary passenger such as a moving sidewalk.

  Furthermore, in the above embodiment, the inlet safety devices 10, 20, 30, 40, 50 provided on the upper floor side have been described as an example, but the case where the escalator step 3 is operated in the downward direction is taken as an example. The inlet safety devices 10, 20, 30, 40, and 50 may be provided on the lower floor side.

1 is a schematic side view of an escalator including an inlet safety device according to a first embodiment of the present invention. It is A arrow directional view of FIG. It is a side view of the inlet safety device shown in FIG. FIG. 4 is a perspective view showing details of a guide mechanism and a holding mechanism shown in FIG. 3. FIG. 4 is a side view showing details of a guide mechanism and a holding mechanism shown in FIG. 3. It is a side view explaining operation | movement of the inlet safety apparatus which concerns on 1st Embodiment. It is a side view of the inlet safety device concerning a 2nd embodiment. It is a perspective view which shows the detail of the guide mechanism which concerns on 2nd Embodiment shown in FIG. It is a side view of the inlet safety device concerning a 2nd embodiment. It is a perspective view which shows the detail of the holding mechanism which concerns on 2nd Embodiment shown in FIG. It is an expanded side view of the holding mechanism explaining operation | movement of the inlet safety device which concerns on 3rd Embodiment, (a) shows an initial state, (b) shows the state when an inlet member moves to a moving direction. (C) has shown the state when an inlet member rotates. It is a side view of the inlet safety device concerning a 4th embodiment. It is a perspective view which shows the detail of the holding mechanism which concerns on 4th Embodiment shown in FIG. It is an expanded side view of the holding mechanism explaining operation | movement of the inlet safety device which concerns on 4th Embodiment, (a) shows an initial state, (b) is an inlet member moving to a moving direction, and an inlet member is The state when it rotates is shown. It is a block diagram which shows the detail of the holding mechanism which concerns on 5th Embodiment, (a) is an enlarged side view, (b) is BB sectional drawing of (a). It is an expanded side view of the holding mechanism explaining operation | movement of the inlet safety device which concerns on 5th Embodiment, (a) shows an initial state, (b) is an inlet member moving to a moving direction, and an inlet member is The state when it rotates is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Passenger conveyor 2 ... Truss structure 3 ... Step 4 ... Parapet 5 ... Moving handrail 6 ... Skirt part 6a ... Inner deck part 6b ... Outer deck part 6c ... Front plate 6d ... Protrusion part 6e ... Base plate 7 ... Parapet, hand Sliding holes 10, 20, 30, 40, 50 ... Inlet safety device 11 ... Inlet member 12 ... Inlet support member 12a ... Inlet fixing side plate 12b ... Body plate (flat plate member)
12b1, 12b2 ... long holes 12b3, 12b4 ... second long holes 13 ... urging members 14, 24 ... guide mechanisms 14a1, 14a2, 24a1, 24a2 ... guide mechanism side support rods 14b1-14b4 ... guide member 15 ... safety switch 16, 36, 46, 56 ... Holding mechanism 16a1, 16a2, 36a1, 36a2, 46a1, 46a2, 56a1, 56a2 ... Holding mechanism side support rods 16b1-16b4, 24b1-24b4, 46b1, 46b2, 56b1, 56b2 ... Thin plates 16c1, 16c3 ... Upper spring member (first elastic member)
16c2, 16c4 ... Lower spring member (second elastic member)
16 d 1 to 16 d 4, 24 d 1 to 24 d 4, 46 d 1, 46 d 2, 56 d 1, 56 d 2... Low friction coefficient material 24 c 1, 24 c 3... Upper spring member (third elastic member)
24c2, 24c4 ... Lower spring member (fourth elastic member)
36b1 to 36b4, 46e1, 46e2, 56e1, 56e2 ... stopper members 46c1, 46c2, 56c1, 56c2 ... spring members (fifth elastic member)

Claims (8)

An inlet member that surrounds the outer periphery of the moving handrail at a position where the moving handrail enters the skirt portion, and is attached to be movable in the moving direction of the moving handrail;
An inlet support member that is supported by the inlet member and moves in the moving direction as the inlet member moves in the moving direction;
A guide mechanism that is provided closer to the moving direction than the inlet member and guides the inlet support member to move in the moving direction as the inlet member moves in the moving direction;
A switch for detecting that the inlet support member has moved in the moving direction,
The inlet member is rotatable about a position of the guide mechanism as a fulcrum and in a direction to widen a gap between the outer surface of the moving handrail and the inner wall of the inlet member facing the outer surface. Inlet safety device for passenger conveyor.   When the inlet member is not moved in the moving direction and a force is applied to the inlet member in a direction to widen the gap, the holding mechanism maintains the position of the inlet member so that the gap is not widened by this force. The inlet safety device for a passenger conveyor according to claim 1, comprising: The holding mechanism includes a first elastic member that urges the flat plate member in an outward direction of the moving handrail from a direction orthogonal to the flat plate member, and an opposite side of the first elastic member that sandwiches the flat plate member. The inlet safety device for a passenger conveyor according to claim 2, further comprising: a second spring member that urges a flat plate member toward an inner side of the moving handrail. The inlet support member has a flat plate member arranged parallel to the moving direction of the moving handrail,
The flat plate member is formed with a long hole extending in the moving direction of the moving handrail,
The guide mechanism includes a support rod that penetrates the elongated hole, and guide members provided at both ends of the support rod,
The inlet safety device for a passenger conveyor according to claim 3, wherein the guide member is gradually separated from the flat plate member from the moving direction side of the moving handrail to the opposite side. The guide mechanism includes a third elastic member that urges the flat plate member in an outer direction of the movable handrail from a direction orthogonal to the flat plate member,
A fourth elastic member that urges the flat plate member inward of the movable handrail from the opposite side of the third elastic member sandwiching the flat plate member,
The inlet safety device for a passenger conveyor according to claim 4, wherein the third elastic member and the fourth elastic member have an elastic coefficient higher than that of the first elastic member and the second elastic member. The holding mechanism has a stopper member that restricts rotation of the inlet member in a direction to widen the gap when the inlet member is not moving in the moving direction;
The inlet safety device for a passenger conveyor according to claim 2, wherein the stopper member releases the rotation restriction only when the inlet member moves in the moving direction. The inlet of a passenger conveyor according to claim 6, further comprising a fifth elastic member that rotates the inlet member in a direction to widen the gap when the rotation restriction by the stopper member is released. Safety device. The inlet support member has a flat plate member arranged parallel to the moving direction of the moving handrail,
The flat plate member is formed with a second long hole extending in the moving direction of the moving handrail,
The stopper member has a corner having a sharp cross section in a plane perpendicular to the flat plate member, and the inlet member is released from the rotation restriction, and the inlet member is separated by the fifth elastic member. 8. The passenger conveyor inlet safety device according to claim 7, wherein the corner portion comes into contact with an inner wall of the second elongated hole when being rotated in a direction in which the width of the passenger conveyor is widened.

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