JP4797566B2 - Passenger conveyor safety device - Google Patents

Description

  The present invention relates to a safety device for a passenger conveyor that urgently stops the passenger conveyor when an abnormality occurs at a passenger conveyor entrance.

  In the conventional safety device for passenger conveyors, it is abnormal that the optical axis is penetrated by opening a hole penetrating laterally in the comb teeth of the passenger conveyor entrance and exiting as an optical path, and the optical axis is blocked by deformation or breakage of the comb teeth There is what detects a passenger conveyor as detection (for example, refer to patent documents 1). In addition, a flexible tube is arranged in a straight line below the comb teeth, and a sensor comprising a light receiving element is provided on one side of the tube, and the optical axis is blocked by the deformation of the flexible tube. There are some which detect a breakage deformation of a tooth or an entrance of a foreign object as an abnormality and stop the passenger conveyor (for example, see Patent Document 2). In addition, there is a type in which a conductive wire is embedded in the comb teeth at the step entrance of the passenger conveyor, and an electric current is passed through this to stop the passenger conveyor as an abnormality detected when the current is interrupted due to deformation or breakage of the comb teeth (for example, Patent Documents) 3 or 4).

Japanese Patent Laid-Open No. 63-272773 JP-A-4-153195 JP 7-25575 A JP-A-6-32579

  In conventional safety devices for passenger conveyors, a thin string-like item, such as a decorative string connected to a bag as a passenger's accessory, a decorative string hung from clothing in fashion, or a necklace of a pet held in hand, is mistaken for the step. In the case of an abnormality such as being caught in the gap and being pinched by the comb teeth at the exit as it is, the thin string often does not have the force to break the comb teeth or to deform or lift. In such a case, the safety device cannot detect an abnormality and the passenger conveyor continues to operate, leading to the passenger falling, and the subsequent passengers piled up at the exit and became a shogi. . In particular, on the passenger conveyor going up, the bag lowered by the passenger is close to the previous step, and this leads to this problem that the decorative string of the mobile phone hanging on the bag is likely to get caught in the gap between the steps. It was easy.

  The present invention has been made to solve the above-described problems, and is a string-like shape in which the comb teeth are not damaged, deformed, or lifted in the gap between the comb teeth and the step provided at the entrance / exit of the passenger conveyor. An object of the present invention is to provide a safety device for a passenger conveyor that can detect an abnormality even when the object is sandwiched and can urgently stop the passenger conveyor.

  In the safety device for a passenger conveyor according to the present invention, a step of moving the passenger conveyor, a comb tooth base provided on the manhole floor at the entrance of the passenger conveyor, the upper surface of the moving step facing the lower surface on the front end side, and a comb tooth base Provided with a comb tooth provided on the lower surface of the front end side, a pressure-sensitive element provided on the lower surface of the front end side of the comb tooth base and the ceiling of the mutual trough of the comb tooth and stopping the passenger conveyor in response to being pressed It is a thing.

  According to the present invention, it is possible to detect an abnormality even when a thin string-like object that does not damage, deform, or lift the comb teeth is sandwiched.

Embodiment 1 FIG.
FIG. 1 is a longitudinal sectional view showing an ascending passenger conveyor equipped with a passenger conveyor safety device according to Embodiment 1 of the present invention, and passengers in which an abnormality has occurred near the exit of the passenger conveyor, and FIG. 3 is a detailed view of part A, FIG. 3 is a detailed view of part B in FIG. 2, FIG. 4 is a perspective view showing steps and comb teeth at the passenger conveyor exit, and FIG. 5 is a pressure-sensitive element pasted with step grooves and comb teeth. FIG. 6 is a cross-sectional view showing the relationship between the step groove, the comb teeth and the pressure sensitive element, and FIG. 7 is a perspective view showing the relationship between one unit of the comb tooth base and the pressure sensitive sensor.
In the figure, 1 is a passenger conveyor in the ascending direction, 2 is a moving step of the passenger conveyor 1 that moves up with passengers on the upper surface, 3 is a manhole floor that becomes the exit of the passenger conveyor 1, and is the uppermost stage of the moving step 2 It is close to the top. Reference numeral 4 denotes a comb-teeth base which is provided so as to extend the movement step 2 side of the manhole floor 3 and makes the step of the proximity between the manhole floor 3 and the upper surface of the movement step 2 gentle so that passengers can get on and off safely. The comb-teeth base 4 is configured by connecting a plurality of units that can be divided in a row in the horizontal direction, and covers the entire vicinity of the manhole floor 3 and the moving step 2. Reference numeral 4a denotes a plurality of comb teeth provided on the lower surface of the front end side (passenger step 2 side) of the comb tooth base 4 so as to protrude downward and in the front end direction. The extending direction of the plurality of comb teeth 4 a and the comb-tooth grooves 4 b between them is provided to be the traveling direction of the moving step 2. The plurality of comb teeth 4a and the comb teeth grooves 4b are not in contact with the plurality of step groove peaks 2a and the step groove valleys 2b provided in the entire upper surface of the movement step 2 in the traveling direction of the movement step 2. Therefore, it is possible to prevent an object from being caught between the moving step 2 and the manhole floor 3.
Reference numeral 5 denotes a plurality of pressure-sensitive sensors that characterize the present invention. The plurality of pressure sensors 5 are provided for each unit of the comb base 4 and are composed of a plurality of pressure sensitive elements 5a and conductive wires 5b. The pressure-sensitive element 5 a is affixed to the ceiling of the plurality of comb-shaped grooves 4 b, that is, the lower surface on the front end side of the comb-shaped substrate 4 so that a part thereof protrudes from the front end of the comb-tooth base 4. The conducting wire 5b connects a plurality of pressure sensitive elements 5a in series, and connects the pressure sensitive elements 5a at both ends and an emergency stop system (not shown) of the passenger conveyor 1. Here, one of the pressure sensitive elements 5a generates a signal in response to being pressed, and this signal is transmitted to the emergency stop system through the conductor 5b as an abnormality detection, and the operation of the passenger conveyor 1 is stopped in an emergency. .
Reference numeral 6 denotes a passenger who has an anomaly near the exit, 6 a is a passenger following the passenger 6, and 7 is a mobile phone decoration string hanging from the baggage of the passenger 6.

In the passenger conveyor safety device configured as described above, FIGS. 1 to 3 show that the mobile phone decoration string 7 hanging from the baggage of the passenger 6 riding on the climbing passenger conveyor 1 is caught in the gap of the moving step 2. FIG. 2 shows a state in which it is drawn below the base 4 of the comb teeth and the manhole floor 3 at the exit. At this time, the passenger 6 pulls upward to pull out the string 7 in a reflective manner. At this time, the string 7 enters one of the comb-shaped grooves 4b and applies a force to pull it upward, thereby pressing the pressure-sensitive element 5a attached to the ceiling of the comb-shaped grooves 4b. When the pressure sensitive element 5a is pressed, it reacts to generate a signal, and this signal is transmitted as an abnormality detection to the emergency stop system through the conductor 5b, so that the operation of the passenger conveyor 1 can be stopped urgently.

  As a result, it is possible to prevent the passenger 6 having an abnormality near the exit and the passenger 6a following the passenger 6 from falling.

  Further, even when the comb tooth base 4 or the comb teeth 4a are not damaged, deformed, or lifted, an abnormality can be detected, and the passenger conveyor can be stopped.

  Moreover, since the pressure-sensitive element of the pressure-sensitive sensor is thin and does not take a space, it can be easily attached to a narrow space of the comb-tooth groove 4b, and is attached to a position where it can easily react to a thin string, such as protruding from the tip of the comb-tooth base. be able to. The pressure sensitive element 5 a is pasted so as to protrude from the tip of the comb-tooth base 4, but may be substantially at the same position as the tip of the comb-tooth base 4.

Embodiment 2. FIG.
FIG. 8 is a view corresponding to FIG. 7 in the second embodiment. In FIG. 8, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the figure, the pressure-sensitive sensor 5 includes a plate-like pressure-sensitive element 5c that is long in the lateral direction and a conductive wire 5b. The length of the plate-like pressure sensitive element 5c is the same as the width of one unit of the comb base 4. 4c is a through hole penetrating all the side surfaces of the plurality of comb teeth 4a in a straight line, and its shape corresponds to the cross-sectional shape of the pressure sensitive element 5c. Further, the pressure sensitive element 5c is inserted into the through hole 4c so that the pressure sensitive element 5c and the through hole 4c are bonded, and the position of the pressure sensitive element 5c in the comb tooth groove 4b is the same as that of the first embodiment. It is provided to be at the same position as the pressure element 5a.

  As a result, the same effects as those of the first embodiment can be obtained, and the trouble of attaching the pressure sensitive element to the comb-shaped groove 4b can be saved, and the lead wire between the pressure sensitive elements can be omitted, thereby simplifying the production and reducing the cost. be able to.

  Moreover, peeling due to adhesion can be prevented by passing the pressure sensitive element through the through hole.

  In addition, since one pressure sensitive element 5c is attached to each unit of the comb base 4, it is possible to quickly find the faulty part of the pressure sensitive element and to replace the defective unit, thus improving maintainability. Can be made.

  In this example, the pressure sensitive elements are divided for each unit, but it goes without saying that the pressure sensitive elements may be made to penetrate through the long holes of all the comb teeth through one pressure sensitive element.

Embodiment 3 FIG.
In the third embodiment, the response of the emergency stop system to the signal generated when the pressure sensitive element in the first and second embodiments is pressed is adjusted. That is, it does not react when the pressure-sensitive element is momentarily pressed, and reacts when the momentary pressing continues intermittently, or when the pressing continues for example from 0.5 seconds to 1 second or more. To control.

  As a result, the cigarette butts and fine dust adhering to the upper surface of the moving step 2 do not react to the pressure sensitive element and pass through the comb teeth at the next moment. can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing an ascending passenger conveyor equipped with a passenger conveyor safety device according to Embodiment 1 of the present invention, and passengers in which an abnormality has occurred in the vicinity of the exit of the passenger conveyor. It is the A section detailed drawing in FIG. FIG. 3 is a detailed view of part B in FIG. 2. It is a perspective view which shows the step and comb-tooth part of a passenger conveyor exit. It is a perspective view which shows the mutual relationship of the pressure sensitive element affixed with the step groove | channel and the comb tooth. It is sectional drawing which shows the relationship between a step groove | channel, a comb tooth, and a pressure sensitive element. It is a perspective view which shows the relationship between 1 unit of the base part of a comb tooth, and a pressure sensor. FIG. 9 is a diagram corresponding to FIG. 7 in Embodiment 2 of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Passenger conveyor, 2 Movement step, 2a Step groove peak, 2b Step groove valley, 3 Manhole floor, 4 Comb base, 4a Comb tooth, 4b Comb tooth groove, 4c Through hole, 5 Pressure sensor, 5a, 5c Pressure sensitive element, 5b Conductor, 6, 6a Passenger, 7 Fine string.

Claims (4)

Moving the passenger conveyor,
Comb base provided on the manhole floor of the passenger conveyor entrance and exit, the upper surface of the moving step and the lower surface on the front end face each other,
Comb teeth provided on the lower surface of the tip side of the comb tooth base;
A pressure-sensitive element that is provided on the lower surface of the front end side of the comb-teeth base and the ceiling of the mutual valleys of the comb teeth and stops the passenger conveyor in response to being pressed;
A safety device for a passenger conveyor, comprising: Moving the passenger conveyor,
Comb base provided on the manhole floor of the passenger conveyor entrance and exit, the upper surface of the moving step and the lower surface on the front end face each other,
Comb teeth provided on the lower surface of the tip side of the comb tooth base;
A through hole provided so as to penetrate all the side surfaces of the comb teeth laterally;
A pressure-sensitive element that is inserted into the through hole and provided on the lower surface of the tip side of the comb tooth base, and stops the passenger conveyor in response to being pressed;
A safety device for a passenger conveyor, comprising:   3. The passenger conveyor safety device according to claim 1, wherein a part of the pressure sensitive element protrudes from the tip of the comb tooth base. The pressure-sensitive element is controlled so as not to react to instantaneous pressing, but to react when the instantaneous pressing is repeated or when pressing continues for a predetermined time or more. The safety device for a passenger conveyor according to any one of claims 1 to 3.

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