JP5396345B2 - Elevator car and elevator device - Google Patents

Description

  The present invention relates to an elevator car and an elevator apparatus of a single door type equipped with a mechanism for detecting a foreign object such as a string by an elevator door.

  2. Description of the Related Art Conventionally, an elevator door device has been proposed in which a pressure-sensitive sensor for detecting a string-like foreign object is provided at the door closing direction tip of a door disposed at an entrance / exit of an elevator car (for example, Patent Document 1). reference).

  Moreover, in order to detect the string-like foreign material which has fallen on the floor of a cage | basket, what provided the rake board which guides a string-like foreign material to a pressure sensor is proposed (for example, refer patent document 2).

JP 2009-269680 A JP 2007-326699 A

  In the above-described conventional technology, even a relatively thin string-like foreign object can be detected, but if a string-like foreign substance with a thickness just entering the gap between the door and the front pillar of the car is caught in this gap, the pressure sensor detects it. There were cases where it was not possible.

  An object of the present invention is to provide an elevator car and an elevator apparatus that can detect the trapping of the string-like foreign matter regardless of the thickness of the string-like foreign matter.

  In order to achieve the above object, an elevator car and an elevator apparatus according to the present invention are provided at a front end of a single-open car door that opens and closes an opening of the car room by providing a car room with a vibration isolating rubber in a car frame. A pressure-sensitive sensor is installed, and when the car door is closed, the front column of the car is opposed to the pressure-sensitive sensor, and a rake plate is provided at the lower end of the car door and the lower part of the front column of the car. In this case, when the car door is closed when viewed from the inside of the car, an inclined portion is provided at a portion that enters deeper than the exposed surface of the car front of the car, and the door is opened and closed in the door opening / closing direction. A margin is made smaller than a gap dimension between the car door and the car front pillar.

  ADVANTAGE OF THE INVENTION According to this invention, the remarkable effect that the string-like foreign material detection precision in a single door can be raised with a comparatively simple structure can be achieved.

It is an outline sectional view for explaining the whole elevator outline. It is the front view which looked at the entrance / exit part of the cage | basket | car of an elevator apparatus from the front. It is the top view which looked at the state of the door of an elevator apparatus from upper direction. FIG. 4 is an enlarged plan view showing in detail a portion II circled in FIG. 3. It is the plane enlarged view which showed the state where the string-shaped foreign material was pinched | interposed. It is the enlarged plan view which looked at the contact | abutting part of the car door 5a and the car front pillar 31 from upper direction. It is the enlarged front view which looked at the lower end butting part of the car door 5a and the car front pillar 31 from the front. FIG. 5 is a view corresponding to FIG. 4, showing a case where a slope is not provided on the front pillar of the car and the hanging allowance is large. It is the FIG. 6 corresponding view which looked at the lower end butting part of the car door 5a and the car front pillar 31 from the front. FIG. 8 is a view corresponding to FIG. 7 for explaining a state in which a car sill sinks and a gap under the car door 5a is widened.

  Hereinafter, an embodiment of an elevator apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic sectional view for explaining an overall outline of an elevator according to an embodiment of the present invention. As shown in the figure, an elevator apparatus 100 according to the present embodiment includes a car 102 and a counterweight 103 that move up and down in a hoistway 101 provided in a building, and a rope that holds the car 102 and the counterweight 103. 104, a sheave 106 attached to a hoisting machine that is a driving device for moving the car 102 and the counterweight 103 up and down, and a pulley 107 around which the rope 104 is wound.

  In this embodiment, the sheave 106 and the pulley 107 of the hoisting machine are installed in the machine room 105 located above the hoistway 101. A rope 104 that connects the car 102 and the counterweight 103 is fixed at one end to the car 102 and drawn upward, wound around the sheave 106 of the hoisting machine in the machine room 105, and then directed downward. It is wound around the pulley 107. The rope 104 is again wound around the sheave 106 and then further wound around the pulley 107, and the other end is fixed to the counterweight 103.

  In this way, the sheave 106 and the pulley 107 are adjusted and secured with an appropriate gap so that the distance between the car 102 and the counterweight 103 does not collide with each other. When the hoisting machine is driven, the car 102 can move up and down between the uppermost floor HF and the lowermost floor LF of the building. At this time, the counterweight 103 moves up and down in the direction opposite to the moving direction of the car 102. In the figure, the floor between the top floor HF and the bottom floor LF is schematically omitted, but there are only two floors of the top floor HF and the bottom floor LF or more. There may be.

  FIG. 2 is a front view of the entrance / exit part of the car as viewed from the front. As shown in the figure, the car 102 comprises a car floor 115, a car sill 4, and a car room 50 via a vibration isolating rubber 114 in a car frame composed of an upper frame 111, a vertical frame 112, and a lower frame 113. ing. The car doors 5a and 5b are opened and closed on the door rails 3 by the door hangers 2a and 2b, and the openings provided in the car room 50 are opened and closed. The door rail 3 is attached to the door rail frame 1, and the door rail frame 1 is attached to the vertical frame 112. The car door 5a has a safety shoe 8 attached via safety shoe levers 6 and 7, and when a person or a load is usually caught while the door is closed, the safety shoe 8 is attached to the car door 5a. By moving in the door opening direction, contact or pinching of a person or a baggage is detected, and the door closing operation of the car doors 5a and 5b is reversed.

  Note that the car door 5a moves approximately twice as much as the moving distance of the car door 5b in substantially the same operation time during the door closing operation and the door opening operation. That is, the speed at which the car door 5a operates is approximately twice the moving speed of the car door 5b, and the car door 5a is configured as a high speed door and the car door 5b is configured as a low speed door.

  FIG. 3 is a plan view of the state of the car door of the elevator apparatus as viewed from above. As shown in the figure, the car 102 stopped on the arrival floor has a landing threshold provided so as to face the landing three-way frames 61a and 61b covering the periphery of the opening provided on the arrival floor landing, and the car threshold 4. 60 and the landing doorway 60, which is opposed to a landing doorway composed of landing doors 62a and 62b that can freely open and close.

  FIG. 4 is an enlarged plan view showing in detail the II part circled in FIG. As shown in the figure, a door joint 20 is provided at the tip of the car door 5a. Further, the door front joint 51 is also provided with a door joint 21, and the door joints 20 and 21 face each other when the door is closed, such as rubber provided inside the door joints 20 and 21. It will be in the state by which the buffer materials formed with the elastic body of this were faced | matched. And the pressure-sensitive sensor 20a is provided in the buffer material inside the door joint 20, and when the string-like foreign material 200 is sandwiched between the car door 5a and the car front pillar 51 as shown in FIG. In response to the door closing operation of 5a, the string-like foreign material 200 is sandwiched between the door-joining joints 20, 21, and the door-joining joint 21 acts to push the string-like foreign material 200 in the direction of the door-joining joint 20. The car doors 5a and 5b are opened by detecting the pinching of the string-like foreign material 200 by a pressure-sensitive sensor 20a built in the car 20.

  When the single door is completely closed as shown in FIG. 4, when viewed from the inside of the car room 50 of the car 102, the front end portion of the car door 5 a is exposed in the car front of the car front column 51. Go deeper than the face. The clearance S2 between the car front column 51 and the front end portion of the car door 5a is reduced by the inclined portion 51a provided in the car front column 51 with respect to the gap S1 formed at this time, and this value is S1 / 2 ≧ S2. It is desirable.

  FIG. 8 is a view corresponding to FIG. 4 showing a case where the slope 51a is not provided in the car front pillar 51 and the hanging allowance is large. As shown in FIG. 8, if the car front column 51 is not provided with the inclined portion 51 a and the allowance between the car front column 51 and the car door 5 a tip is large, the gap between the car door 5 a tip and the car front column 51 is large. When the string-like foreign matter 200 of the same level as S1 is sandwiched between the car door 5a and the car front pillar 51, the string-like foreign matter 200 comes into contact with the outer portion of the door-joint joint 20 and slightly touches the door-joint joint 20. 21 is opened, and the string-like foreign material 200 is sandwiched between the outer wall of the door-joining joint 20 and the door-joining joint 21 without being compressed by the cushioning material provided with the pressure-sensitive sensor 20a. The case where the pressure sensor 20a cannot detect was assumed. However, by providing the inclined portion 51a as shown in FIG. 4, it is possible to obtain very high detection accuracy without causing such a problem. In particular, with respect to the gap S1, by making the relationship of the engagement allowance S2 S1 / 2 ≧ S2, it is possible to satisfactorily ensure the pinching detection of the string-like foreign matter 200 by the pressure sensor 20a.

  FIG. 9 is an enlarged front view of the car door 5a and the front end portion 51 of the car front end 51 as seen from the front. As shown in the figure, in this embodiment, a door shoe 9a is provided at the lower end of the car door 5a to slide in a groove provided in the door sill 4 and guide the opening / closing operation of the car door 5a. However, with such a configuration, there is a gap G1 between the lower end of the car door 5a and the door sill 4 where there is no door-joint joint 20 provided with the pressure-sensitive sensor 20a. Therefore, in the gap G1, a rake plate 30 in which an inclined surface is formed at the lower end tip portion of the car door 5a from the lower part of the groove of the door sill 4 toward the door joint 20, and the lower end tip portion of the car front column 51 is formed. Are attached with rake plates 31 each having an inclined surface cut from the lower side of the groove of the door sill 4 toward the door joint 21. By providing such rake plates 30 and 31, when the string-like foreign material 200 is on the floor, the inclined surfaces of the rake plates 30 and 31 intersect in a V shape by the door closing operation of the car door 5a. The string-like foreign material 200 existing on the floor is sandwiched between V-shaped. Further, as the door closing operation of the car door 5a proceeds, the bottom of the V-shape gradually becomes shallower, and accordingly, the string-like foreign material 200 is lifted upward by the inclined surfaces, and the door contact provided with the pressure-sensitive sensor 20a. It can be scooped up to the joint 20 part.

  However, as shown in FIG. 2, a door rail 3 is provided on the door rail frame 1 provided on the car frame, and the car doors 5a and 5b suspended by the door hangers 2a and 2b on the door rail 3 and on the car frame. The car floor 115, the car sill 4, and the car room 50 configured via the vibration isolating rubber 114 are deformed when a person or a baggage gets into the car and the car sill 4 sinks. Accordingly, the car front pillar 51 sinks together, but the car doors 5a and 5b are not related to the sinking. Therefore, as shown in FIG. 10, the pressure-sensitive sensor 20a between the car door 5a lower end and the door sill 4 is provided. The gap in which the provided door-to-door joint 20 does not exist increases like G2. Then, a step in the height direction G3 occurs between the rake plates 30 and 31, and the string-like foreign material 200 scooped up from the floor plate is sandwiched between the step G3 and comes into contact with the door-to-door joint 21, but the feeling It was assumed that the pressure-sensitive sensor 20a could not detect the entanglement of the string-like foreign material 200 without contacting the door joint 20 provided with the pressure sensor 20a.

  Therefore, in the present embodiment, as shown in FIGS. 6 and 7, the slope of the lower end of the inclined surface is in contact with the surface of the car sill 4 and is cut toward the door-to-door joint 21 when viewed from the front. The formed second rake plate 40 is substantially parallel to the rake plate 31 provided at the lower portion of the car front column 51, and overlaps with the surface of the car door 5a on the hoistway 101 side, that is, the car front column 51 side. 51 is provided on the hall facing surface side. In this manner, by providing the second rake plate 40, for example, even if the vibration isolating rubber 114 is deformed due to the entry of a person or a baggage into the car and the car front pillar 51 sinks, the inside of the step in the height direction G3. Since the second scooping plate 40 scoops up the string-like foreign material 200, it can be scooped up into the door-to-door joint 20 provided with the pressure-sensitive sensor 20a without being caught in the step in the height direction G3. In addition, the string-like foreign material 200 can be scooped up to the door joint 20 where the pressure-sensitive sensor 20a is provided up to a position higher by G4.

  The maximum height of the second rake plate 40 may be set higher than the position of the rake plate 30 provided at the lower end of the car door 5a displaced by the amount of displacement of the anti-vibration rubber 114 in the lower part of the car room 50. By configuring in this way, even if the car floor sinks due to people or luggage, the string-like foreign material on the floor is guided to the pressure-sensitive sensor 20a at the tip of the car door 5a to improve the reliability of detection. The detection accuracy of the pressure sensor can be improved.

  As described above, in the present embodiment, by establishing the second rake plate 40 on the car front pillar 51 in addition to the rake plate 31, the establishment of guiding the string-like foreign matter 200 on the floor to the pressure sensor 20a at the tip of the car door 5a. The detection accuracy of the pressure sensor can be improved.

  In the present embodiment, the second rake plate 40 is attached to the car front pillar 51 so as to be placed on the car sill 4 by a bolt at one point. By doing so, even if a vibration-proof rubber 114 is deformed by a person or luggage entering the car, and the car sill 4 is deformed or distorted, the lower end of the inclined surface of the second rake plate 40 is kept in the car. It can comprise so that the surface of the threshold 4 may be contacted, and the accuracy of the scooping precision of the string-like foreign material 200 can be improved.

  In addition, by securing the second rake plate 40 to the car front pillar 51 via a cushioning material, while ensuring the configuration in which the lower end of the inclined surface of the second rake plate 40 contacts the surface of the car sill 4, It is possible to suppress the generation of sound due to vibrations caused by the shaking of the car that occurs when the car 102 is raised and lowered.

  Furthermore, by providing the second rake plate 40 on the hall facing surface side of the car front pillar 51, it is possible to secure a sufficient installation space and improve maintainability.

  Further, the length of the second rake plate 40 may be the same as or shorter than the exposed surface of the car front column 51 in the cab 50, thereby hindering passengers getting on and off the elevator device and loading / unloading of luggage. It can be installed without.

  In the present embodiment, the configuration of 1: 1 roping has been described as an example, but the present invention can be applied to various roping types such as 2: 1 roping and 3: 1 roping. Further, in the present embodiment, the configuration in which the machine room 105 is provided has been described as an example. However, the hoisting machine may be applied to a machine room-less elevator apparatus or the like provided in the hoistway 101.

DESCRIPTION OF SYMBOLS 1 Door rail frame 2a, 2b Door hanger 3 Door rail 4 Car sill 5a, 5b Car door 6, 7 Safety shoe lever 8 Safety shoe 9a Door shoe 20, 21 Door joint 20a Pressure sensor 30, 31 Rake plate 40 Second rake plate 50 Car room 51 Car front column 51a Inclined portion 60 Board sill 61a, 61b Board three-way frame 62a, 62b Board door 100 Elevator device 101 Hoistway 102 Car 103 Balance weight 104 Rope 105 Machine room 106 Sheave 107 Pulley 111 Upper frame 112 Vertical Frame 113 Lower frame 114 Anti-vibration rubber 115 Car floor 200 String-like foreign material HL Top floor LF Bottom floor

Claims (4)

A car room is provided in the car frame through vibration-proof rubber, and a pressure-sensitive sensor is installed at the tip of a single-open car door that opens and closes the opening of the car room. When the car door is closed, the car front pillar is Constructed to face the pressure-sensitive sensor, and provided with a rake plate at the lower end of the car door and the lower part of the front of the car,
When the car door is closed when viewed from the inside of the car, an inclined portion is provided at a position that goes deeper than the car interior exposed surface of the car front pillar, and a door opening / closing direction allowance for the car door and the car front pillar is increased. The elevator car characterized by being made smaller than the clearance dimension between the said car door and the said front pillar.   2. The rake plate according to claim 1, wherein a second rake plate is provided on the side of the car front column at a position overlapping the hoistway side surface of the car door substantially parallel to the rake plate provided at a lower portion of the car front column. Elevator car.   The maximum height of the second rake plate according to claim 2, wherein the maximum height of the second rake plate is set higher than the position of the rake plate provided at the tip of the lower part of the car door that is displaced by a displacement amount of the vibration isolating rubber at the lower part of the car room. Featured elevator car. In an elevator apparatus having a car that moves up and down the hoistway, a rope that holds the car, and a drive device that drives the rope,
When the car is closed, a car room is provided in the car frame through vibration-proof rubber, and a pressure-sensitive sensor is installed at the tip of a single-open car door that opens and closes the opening of the car room. The car front pillar is configured to face the pressure sensor, and a rake plate is provided at the car door lower end part and the car front pillar lower part,
When the car door is closed when viewed from the inside of the car, an inclined portion is provided at a position that goes deeper than the car interior exposed surface of the car front pillar, and a door opening / closing direction allowance for the car door and the car front pillar is increased. The elevator apparatus characterized by making it smaller than the clearance dimension of the said car door and the said front pillar.

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