JP2010037053A - Foreign matter nipping detector of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foreign matter nipping detector precisely detecting nipping when a string-like foreign matter is nipped in a door device, and having a trouble-free detection mechanism. <P>SOLUTION: This foreign matter nipping detector has the detection mechanism 25 for detecting its nipping when the string-like foreign matter S is nipped in a door stop side end part E of its door panels 5a and 5b by door closing operation of the door panels 5a and 5b. The detection mechanism 25 is composed of: a base body 26 movable in the moving direction of the door panels 5a and 5b; a rope-like detector 35 arranged in this base body 26 and capable of contacting with the string-like foreign matter S in the middle when the base body 26 moves toward the door stop side end part of the door panels 5a and 5b; and a detection switch 30 for detecting the foreign matter S by turning on by operation of being deformed in a V shape when this detector 35 contacts with the foreign matter S. The detection mechanism 25 starts foreign matter detecting operation after an entrance is fully closed when the door panels 5a and 5b move in the door closing direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator foreign object pinching detection device that accurately detects foreign objects, particularly string-shaped foreign objects, being caught in an elevator door.

  Generally, an elevator door device is provided with a safety mechanism that stops a door closing operation and reverses the door opening operation when a passenger's body or luggage is caught. However, this safety mechanism cannot detect the pinching of a thin string-like foreign object, such as a dog walk lead or a rope for jumping rope, and the string-like foreign object is caught in the door. There is a danger that the car will move and the elevator equipment will be damaged, or that passengers may be in danger.

Therefore, in Japanese Patent Application Laid-Open No. 2006-199389, a detection rod is provided on the front surface of the door so as to protrude toward the door contact side of the door, and the detection rod is moved upward when the door closes. A detection mechanism has been proposed in which a foreign object is detected by a detection rod that moves upward when there is a string-like foreign object.
JP 2006-199389 A

  However, in Japanese Patent Application Laid-Open No. 2006-199389, the foreign matter can freely move up and down because the detection rod moves up and detects the foreign matter immediately before the string-like foreign matter is sandwiched between the doors. Therefore, when the foreign matter is particularly lightweight, the foreign matter moves upward integrally with the detection rod even if the detection rod moves up, and a predetermined load is not applied to the detection rod. It may not be detected properly.

  In addition, since the detection rod protrudes toward the door side of the door, if the passenger pulls the string-like foreign object immediately before the string-like foreign object is caught by the door, the string-like foreign object There is a risk of tangling the detection rod protruding to the door contact side of the door and damaging the detection rod.

  The present invention has been made paying attention to such points, and the object of the present invention is to accurately detect and detect when a string-like foreign object is caught in the door device. It is an object of the present invention to provide an elevator foreign object pinching detection device in which the mechanism is not damaged.

  In order to achieve such an object, the invention of claim 1 includes a door device that opens and closes an entrance of a car and an entrance of an elevator hall by movement of the door panel, and a door stop side of the door panel by the door closing operation of the door panel. A detection mechanism for detecting when a string-like foreign object is sandwiched at the end, and the detection mechanism is provided on the base body, the base body being movable in the moving direction of the door panel, and the base body Is operated in conjunction with a detection body capable of contacting the string-like foreign material while moving toward the door-contact side end of the door panel, and an operation of the detection body in contact with the foreign material. And a detection switch for detecting the foreign matter, wherein the detection mechanism starts the foreign matter detection operation after the door panel is moved in the door closing direction and the doorway is closed.

  According to a second aspect of the present invention, the detection body of the detection mechanism is stretched in a state where a predetermined tension is applied to the base body by the elastic force of a spring, and the spring is brought into contact with the foreign object by the pressure of the contact. The detection switch is operated by bending and deforming against the elastic force.

  The invention of claim 3 is characterized in that the detection body of the detection mechanism is a cord-like member or a belt-like member that can be flexibly deformed.

  According to a fourth aspect of the present invention, the detection body of the detection mechanism is rotatably attached to the base body, and is elastically biased in a rotational direction away from the base body by the elastic force of a spring and contacts the foreign matter. In some cases, the detection switch is operated by an operation of rotating against the elastic force of the spring by the pressure of the contact.

  According to a fifth aspect of the present invention, the detection body of the detection mechanism is attached to the base body so as to be movable toward and away from the base body via a link mechanism, and is separated from the base body by the elastic force of a spring. The detection switch is operated by an operation that is elastically biased and moves against the elastic force of the spring by the pressure of the contact when contacting the foreign object.

  According to a sixth aspect of the present invention, the detection body of the detection mechanism is attached to the base body so as to be movable toward and away from the base body via the slide mechanism, and in a direction away from the base body by the elastic force of a spring. The detection switch is operated by an operation that is elastically biased and moves against the elastic force of the spring by the pressure of the contact when contacting the foreign object.

  According to the seventh aspect of the present invention, a door device that opens and closes a car doorway and an elevator doorway by moving the door panel, and a string-like foreign object is sandwiched between the door panel door closing operation and the door panel door closing operation. A detection mechanism for detecting the rotation of the door panel, and the detection mechanism includes a rotation shaft extending in a direction substantially perpendicular to the moving direction of the door panel, and a pair of the rotation shaft capable of rotating integrally with the rotation shaft. An arm, a detection body attached between the arms, and capable of contacting the string-like foreign matter during the operation in which the arms rotate integrally with the rotary shaft; and the foreign matter of the detection body A detection switch that detects the foreign matter by operating in conjunction with the contact operation, and the detection mechanism detects the foreign matter after the door panel is moved in the door closing direction and the doorway is closed. It is characterized in that to start the operation.

  According to the present invention, when a string-like foreign object is caught in the door device, it can be accurately detected, and the detection mechanism is not damaged.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 show a first embodiment. FIG. 1 shows a state in which a car door device A provided at an entrance 1a on the front surface of a car 1 is viewed from the elevator landing side. A door frame 2 is installed on the front surface of the car 1, a beam member 3 is installed on the upper part of the door frame 2, and a long hanger rail 4 is installed horizontally on the beam member 3.

  The car door device A has, for example, a central opening type structure in which a pair of door panels 5a and 5b move left and right to open and close the entrance / exit 1a. Hangers 6a and 6b are attached to the upper ends of the door panels 5a and 5b, respectively, and a pair of hanger rollers 7a and 7b are rotatably attached to the hangers 6a and 6b, respectively. The hanger rollers 7a and 7b are connected to the hanger rails. 4, the door panels 5a and 5b are suspended below the hanger rail 4 so as to be arranged side by side. A sill 8 is attached to the lower end portion of the door frame 2, and the lower end portions of the door panels 5 a and 5 b are slidably engaged with the sill 8.

  Pulleys 12 are rotatably attached to both end portions of the hanger rail 4 and one end portion of the beam member 3, and a motor 13 as a drive source is installed on the upper portion of the door frame 2. A pulley 14 is attached to the end. A cord 15 such as a belt or a wire is stretched over the pulleys 12 and 14, and the cord 15 is connected to hangers 6a and 6b of the door panels 5a and 5b via fasteners 16a and 16b, respectively. Is rotated forward and backward, and the cable body 15 travels in the forward and reverse direction, so that the door panels 5a and 5b move to the left and right along the hanger rail 4 and the sill 8, and the doorway 1a of the car 1 is opened and closed by this movement. .

  The car door apparatus A faces the landing door apparatus B of the elevator landing 22 as shown in FIG. The landing door device B includes a pair of door panels 20a and 20b, and these door panels 20a and 20b move to the left and right along the sill 21 in conjunction with the door panels 5a and 5b of the car door device A. 22a is opened and closed.

  A door safety 23 is provided on the front side of the car door device A facing the landing. The door safety 23 includes a safety shoe 23a provided on one door panel 5a of the car door device A and a safety shoe 23b provided on the other door panel 5b. One safety shoe 23a is a door-contact side edge of the door panel 5a. When the door panels 5a and 5b move in the door closing direction and the safety shoe 23a comes into contact with the passenger's body or baggage, the safety shoe 23a moves relatively backward. In this movement, the foreign object is detected, and the door panels 5a and 5b are controlled to reverse from the door closing operation to the door opening operation.

  Further, a detection mechanism 25 that detects the trapping of the string-like foreign matter is provided on the front surface portion of the car door device A facing the landing side. The detection mechanism 25 includes a base body 26. The base body 26 is disposed on a front surface portion of the door panel 5b and is supported by laterally long guide rails 27 attached to the upper and lower portions of the door panel 5b. It is possible to slide laterally along. The door panel 5b is provided with a driving device 28 for driving the base 26. The driving device 28 includes a rack and pinion mechanism and the like, and the base 26 is controlled by the driving device 28 in the direction of the door end side of the door panel 5b. And slide in the opposite direction.

  Arms 26a and 26b projecting toward the door contact side of the door panel 5b are integrally formed on the upper and lower portions of the base 26. As shown in detail in FIG. 3, a roller 29 is rotatably attached to the tip of the upper arm 26a, and a detection switch 30 and a detection lever 31 are attached to an intermediate portion.

  One end of the detection lever 31 is rotatably attached to the arm 26 a via a pin 32, and is elastically urged clockwise by the urging force of the spring 33. The detection switch 30 is attached to the arm 26 a so as to face the intermediate portion of the detection lever 31 on the opposite side of the spring 33, and the actuator 30 a of the detection switch 30 is in elastic contact with the detection lever 31.

  A flexible deformable cord-like detection body 35 made of a wire, a fiber string, or the like is attached to the distal end portion of the detection lever 31. The detection body 35 is drawn downward through the roller 29, and its end is connected to the tip of the arm 26 b below the base body 26. A constant tension is applied to the detection body 35 by the elastic force of the spring 33. A section from the roller 29 of the detection body 35 to the arm 26b is a detection portion 35a, and the detection portion 35a is supported so as to extend in parallel with the door-end side end portion of the door panel 5b.

  Next, the operation will be described.

  When the car 1 reaches the elevator landing and the door panels 5a, 5b, 20a, 20b of the car door device A and the landing door device B are open, the base 26 of the detection mechanism 25 is shown in FIG. Thus, the detection part 35a of the detection body 35 is arrange | positioned in the stand-by position located in the back side (right side) from the door stop side edge part E of the door panel 5b.

  Then, after a passenger enters the car 1 and each door panel 5a, 5b, 20a, 20b moves in the door closing direction and the car door device A and the landing door device B are closed, the detection mechanism 25 starts to operate. It is determined whether or not a string-like foreign object is sandwiched between the car door device A and the landing door device B.

  That is, after the car door device A and the landing door device B are closed, the drive device 28 of the detection mechanism 25 is activated, and the base body 26 is integrated with the detection body 35 from the standby position as shown in FIG. It moves toward the door end side E of the door panel 5b.

  Here, when a string-like foreign matter S is sandwiched between the doors of the door panels 5a, 5b, 20a, and 20b as shown in FIGS. 2 and 4B, it is detected according to the movement of the base 26. When the detection unit 35a of the body 35 comes into contact with the foreign matter S in the portion sandwiched between the safety shoes 23a and 23b, and the base body 26 moves, the detection unit 35a of the detection body 35 is moved as shown in FIG. It bends in a square shape at the point of contact with the foreign object S. The detection lever 31 is rotated counterclockwise around the pin 32 against the spring 33 by the tension of the bent detection body 35, and the actuator 30a of the detection switch 30 is pressed by the detection lever 31 to detect the detection lever 31. The switch 30 is turned on. That is, it is detected that the string-like foreign matter S is sandwiched between the car door device A and the landing door device B.

  On the other hand, when the foreign matter S is not sandwiched, when the detection unit 35a of the detection body 35 shifts from the state of FIG. 4B to the state of FIG. The detection switch 30 is not turned on by passing through the portion between the door panels of the door panels 5a, 5b, 20a, and 20b while being in a straight line tension, thereby detecting that the foreign matter S is not caught. .

  As shown in FIG. 2, the foreign object S is sandwiched at two points, that is, between the door contact of the door panels 5 a and 5 b in the car door device A and between the door panels of the door panels 20 a and 20 b in the landing door device B. The detecting part 35a contacts the part between the two points of the foreign matter S. If a predetermined tension has occurred in the portion between the two points of the foreign matter S, the detection unit 35a comes into contact with the portion, and when the base body 26 moves, the detection unit 35a bends in a square shape to detect the foreign matter S. be able to. However, in the case where sagging occurs in the portion between the two points of the foreign matter S, even if the detecting portion 35a comes into contact with that portion and the base body 26 moves further, the detecting portion 35a becomes a letter shape due to the sagging. The foreign object S cannot be detected without bending.

  However, immediately after the car 1 starts to move up and down, the movement causes a predetermined tension between the two points of the foreign matter S, and this tension causes the detection portion 35a of the detection body 35 to have a square shape. The foreign material S is detected by this.

  5 and 6 are flowcharts showing the operation flow of the detection mechanism 25. The operation flow of the detection mechanism 25 will be described with reference to this flowchart.

  When the car 1 moves up and down, the base body 26 of the detection mechanism 25 stands by at the standby position (S1). Then, when the car 1 is landed and stopped (S2), the car door device A and the landing door device B start the door opening operation (S3). When the door is fully opened and the door opening operation is finished (S4), the elapsed time from this point is counted (S5), and when the predetermined time has elapsed, the car door device A and the landing door device B are closed. Is started (S6). During the door closing operation of the car door device A and the landing door device B, the presence or absence of foreign matter detection by the door safety 23 is determined (S7), and when the door safety 23 detects the foreign matter, that is, the passenger's body or luggage When it is about to be pinched by the door, the process returns to S3, the car door device A and the landing door device B are opened, and the operations after S3 are repeated.

  When it is determined in S7 that the door safety 23 does not operate and the passenger's body or baggage is not pinched by the door, the door closing operation of the car door device A and the landing door device B continues and the door closing operation is performed. Is finished (S8).

  Thereafter, the detection mechanism 25 for detecting the string-like foreign material starts operating (S9), and the base 26 of the detection mechanism 25 moves from the standby position to the detection position. Then, it is determined whether or not a string-like foreign matter is sandwiched between the car door device A and the landing door device B by the detection mechanism 25, that is, whether or not the foreign matter is detected by the detection mechanism 25 (S10). When it is done, the process returns to S3, and the car door device A and the landing door device B are opened.

  When it is not desired to detect the trapping of the foreign matter in S10, the base body 26 of the detection mechanism 25 stays at the detection position (S11), and the car 1 starts to move up and down in this state (S12). Immediately after the car 1 starts to move up and down, the presence or absence of foreign matter is detected again by the detection mechanism 25 (S13). When it is judged that foreign matter is detected, the upward and downward movement of the car 1 stops (S14). Further, the car 1 returns to the stop floor just before it (S15), the base 26 of the detection mechanism 25 returns to the standby position (S16), and thereafter, the operation after S1 is repeated.

  When it is determined in S13 that no foreign matter is detected, the base 26 of the detection mechanism 25 returns to the standby position (S17), the car 1 moves up and down toward the destination floor (S18), and the car 1 is on the destination floor. Stop (S19).

  Thus, in this embodiment, after the car door device A and the landing door device B are completely closed, it is detected whether the string-like foreign matter S is sandwiched by the detection mechanism 25 operating.

  Conventionally, when the door device is closed, that is, before the string-like foreign object is actually caught between the doors of the door, the detection rod operates to detect the foreign object. When a foreign object is pulled, the string-like foreign substance may move unintentionally and get entangled with the detection rod, resulting in damage to the detection rod or a failure to properly detect the foreign object.

  In this embodiment, the car door device A and the landing door device B are completely closed, and the string-like foreign matter S is detected after being sandwiched between the door panels 5a and 5b and between the door panels 20a and 20b. Since the mechanism 25 operates, the foreign matter S is not entangled with the detection mechanism 25, and therefore the detection mechanism 25 is not damaged, and the foreign matter S can be detected properly.

  In the first embodiment, a cord-like member such as a wire or a fiber string is used as the detection body 35 of the detection mechanism 25. However, as shown in the second embodiment in FIG. It is also possible to use a flexible and deformable belt-like member having a certain width instead of the cord-like member.

  8 and 9 show a third embodiment. In this embodiment, components corresponding to those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In this embodiment, a detection lever 38 is mounted substantially horizontally on the arm 26a on the upper portion of the base body 26 in the detection mechanism 25. The detection lever 38 is rotatably supported via a pin 39 at an almost middle portion thereof, and is elastically urged clockwise by a spring 40. One end of the detection body 35 is connected to one end of the detection lever 38, and the other end of the detection body 35 is connected to the tip of the arm 26 b below the base body 26. A predetermined tension is applied by the elastic force of the spring 40, and the detection switch 30 is attached to the arm 26 a on the other end side of the detection lever 38. The actuator 30 a of the detection switch 30 is attached to the other end side end portion of the detection lever 38. It arrange | positions so that it may oppose.

  In the case of this embodiment, when the base body 26 moves and the detection body 35 comes into contact with the string-like foreign substance S and bends in a letter shape, the detection lever 38 rotates counterclockwise around the pin 39 by its tension. The actuator 30a of the detection switch 30 is pressed by the detection lever 38 and is turned on by this rotation, whereby the detection of the foreign matter S is achieved.

  In this embodiment, the detection lever 38 is provided substantially horizontally, and the detection body 35 is stretched directly perpendicularly from the end of one end to the tip of the arm 26b. Therefore, the detection lever 35 is used as a guide in the first embodiment. The roller 29 is unnecessary and a simple structure can be obtained.

  10 and 11 show a fourth embodiment. In this embodiment, components corresponding to those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In this embodiment, a detection body 35 is rotatably attached to an arm 26 a on the upper portion of the base body 26 in the detection mechanism 25 via a pin 50. The detection body 35 is made of a belt-like plate material having a certain rigidity such as metal or synthetic resin, and its upper part is rotatably attached to the arm 26b via a pin 43.

  When the base body 26 is in the standby position, the detection body 35 is positioned slightly rearward of the door end side portion of the door panel 5b and is arranged in parallel with the end portion. A bracket 44 is attached to the lower arm 26 b of the base body 26, a guide bar 45 is horizontally attached to the bracket 44, and a detection switch 30 is attached below the guide bar 45.

  A bracket 48 is attached to the lower end portion of the detection body 35, and a long hole 49 that is long in the vertical direction is formed in the bracket 48, and the guide rod 45 is inserted into the long hole 49. The actuator 30 a of the detection switch 30 is disposed so as to face the bracket 48. A spring 50 is mounted on the outer periphery of the guide bar 52, and the detection body 35 is elastically biased clockwise by the elastic force of the spring 50.

  The lower end portion of the detection body 35 is in contact with a stepped portion 51 formed on the arm 26b, and the rotation range of the detection body 35 is regulated by this contact, and the detection body 35 is normally at the door-end side end portion of the door panel 5b. It is held slightly in the rear side and aligned in parallel with its end.

  In the case of this embodiment, when the base body 26 moves and the detection body 35 comes into contact with the string-like foreign matter S, the detection body 35 resists the elastic force of the spring 50 by the pressure and counterclockwise around the pin 43. By rotating in this direction, the actuator 30a of the detection switch 30 is pressed through the bracket 48 and turned on, whereby the detection of the foreign matter S is achieved.

  12 and 13 show a fifth embodiment. In this embodiment, components corresponding to those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In this embodiment, a detection body 35 made of a strip-shaped plate material having a certain rigidity such as metal or synthetic resin is disposed adjacent to one side of the base body 26 in the detection mechanism 25, and the detection body 35 is located above and below the detection body 35. In this part, a link mechanism 54 is connected to one side of the base body 26 so as to be movable in parallel.

  Each link mechanism 54 includes a first link lever 55 provided on the front side of the base body 26 and the detection body 35 so as to straddle both the base body 26 and the detection body 35, and the base body 26 and the detection body 35. And a second link lever 56 provided to be inclined so as to straddle both the base body 26 and the detection body 35.

  The first link lever 55 and the second link lever 56 are arranged so as to intersect with each other while being inclined in opposite directions, and the intersecting portions are connected to each other via pins 57 so as to be rotatable. One end of the first link lever 55 is rotatably coupled to the base body 26 via a pin 58, and the other end slides via a pin 60 in a vertically long slot 59 formed in the detection body 35. One end of the second link lever 56 is pivotally coupled to the detection body 35 via a pin 61, and the other end is pin 63 in a vertically long slot 62 formed in the base body 26. The first and second link levers 55 and 56 are pivoted around a pin 57 so that the detection body 35 is moved in parallel in the left-right direction so as to be in contact with and away from the base body 26. It is supposed to be.

  A bracket 64 is attached to one end of the first link lever 55, and a spring 65 is stretched between the bracket 64 and the base body 26, and the spring 65 elastically moves the detection body 35 away from the base body 26. Is being energized. Further, the detection switch 30 is attached to the base body 26, and the actuator 30 a of the detection switch 30 is disposed so as to face the bracket 64.

  In the case of this embodiment, when the base body 26 moves and the detection body 35 comes into contact with the string-like foreign matter S, the detection body 35 resists the elastic force of the spring 65 relative to the base body 26 by the pressure. This movement causes the first link lever 55 of each link mechanism 54 to rotate counterclockwise, and the second link lever 56 to rotate clockwise. Then, when the first link lever 55 rotates counterclockwise, the actuator 30a of the detection switch 30 is pressed and turned on via the bracket 46, thereby detecting the foreign matter S.

  14 and 15 show a sixth embodiment. In this embodiment, components corresponding to those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In this embodiment, a detection body 35 made of a strip-shaped plate material having a certain rigidity such as metal or synthetic resin is disposed adjacent to one side of the base body 26 in the detection mechanism 25, and the detection body 35 is located above and below the detection body 35. This part is connected to one side of the base body 26 via a slide mechanism 67 so as to be movable in parallel.

  Each slide mechanism 67 is attached to the detection body 35 and extends horizontally, and is rotatably attached to the base body 26. The slide mechanism 67 engages the rail 68 so as to sandwich the rail 68 from both the upper and lower sides. And a plurality of rollers 69 that are slidably supported.

  Brackets 70 and 71 are respectively attached to the base body 26 and the detection body 35 at the upper and lower intermediate portions, a shaft 72 is stretched between the brackets 70 and 71, and a spring 73 is attached to the outer periphery of the shaft 72. The detection body 35 is elastically biased in a direction away from the base body 26 by the spring 73.

  A detection switch 30 is attached to the base body 26, and an actuator 30 a of the detection switch 30 is disposed so as to face the bracket 71 of the detection body 35. The moving range of the detection body 35 is restricted by a nut 74 attached to the end of the shaft 72.

  In the case of this embodiment, when the base body 26 moves and the detection body 35 comes into contact with the string-like foreign matter S, the detection body 35 resists the elastic force of the spring 65 relative to the base body 26 by the pressure. With this movement, the actuator 30a of the detection switch 30 is pressed and turned on via the bracket 71 of the detection body 35, whereby the detection of the foreign matter S is achieved.

  In addition, in the said 1st-6th embodiment, although the base | substrate 26 of the detection mechanism 25 was attached to the door panel 5b, the case where it attaches to the door frame 2, the sill 8, etc. may be sufficient.

  Next, a seventh embodiment will be described with reference to FIGS. 16 and 17. The first to sixth embodiments are the case of a double-opening type door device that opens and closes the doorways 1a and 22a by moving a pair of door panels away from each other and a direction approaching each other. In this case, a pair of door panels is a single-open door device that opens and closes the doorway by moving in the same direction at different speeds.

  That is, as shown in FIG. 16, the entrance / exit frames 80 and 81 are respectively provided at the entrance / exit 1 a of the car 1 and the entrance / exit 22 a of the landing 22, and the car door apparatus A is formed in a pair facing the entrance / exit frame 80 of the car 1. The door panels 5a and 5b are arranged with their positions shifted forward and backward, and the pair of door panels 20a and 20b that constitute the landing door device B are arranged with their positions shifted forward and backward so as to face the entrance / exit frame 81 of the landing 22.

  When the door panels 5a, 5b, 20a, and 20b move in the right direction in the figure from the door-closed state shown in FIG. 16, the doorways 1a and 22a are opened. At this time, the door panels 5a and 20a move at a speed twice that of the door panels 5b and 20b. The door panels 20a and 20b of the landing door apparatus B move in conjunction with the door panels 5a and 5b of the car door apparatus A.

  When the door is closed, the door panels 5a, 5b, 20a, 20b move in the left direction in the figure, and the door end portions E of the door panels 5a, 20a are respectively connected to the door stoppers 80a, 80b of the entrance / exit frames 80, 81. Abut. At this time, the string-like foreign matter S may be sandwiched between the door stops, and a detection mechanism 25 for detecting the foreign matter S is provided in the entrance / exit frame 80.

  The detection mechanism 25 includes a rotating shaft 83 that rotates by being driven by a drive source (not shown). The rotating shaft 83 is provided vertically inside the entrance / exit frame 80 as shown in FIGS. 16 and 17. Yes. Arms 84 and 85 are respectively attached to the upper end portion and the lower end portion of the rotating shaft 83, and these arms 84 and 85 extend in front of the entrance / exit frame 80.

  A pair of rollers 87 and 88 are rotatably attached to the distal end portion of the upper arm 84, and the detection switch 30 and the detection lever 90 are attached to the intermediate portion.

  One end of the detection lever 90 is rotatably attached to the arm 84 via a pin 91 and is elastically urged clockwise by the urging force of the spring 92. The detection switch 30 is attached to the arm 84 so as to face the detection lever 90 on the opposite side of the spring 92, and the actuator 30 a of the detection switch 30 is in elastic contact with the detection lever 90.

  A cord-like detection body 35 made of a wire, a fiber string, or the like is attached to the distal end portion of the detection lever 90. The detection body 35 is drawn downward through the rollers 87 and 88, and its end is connected to the tip of the arm 85 below the rotation shaft 83. A constant tension is applied to the detection body 35 by the elastic force of the spring 92. A section from the roller 88 to the arm 85 of the detection body 35 is a detection portion 35a, and the detection portion 35a is supported so as to extend in parallel with the door contact side edge portion E of the door panel 5a. Reference numeral 94 denotes a safety shoe provided on the door panel 5a.

  The detection unit 35a of the detection body 35 normally stands by at a standby position closer to the center of the entrances 1a and 22a than the positions of the door stop portions 80a and 81a of the entrance / exit frames 80 and 81. Then, after the door panels 5a, 5b, 20a, 20b are closed, the rotating shaft 83 rotates in the clockwise direction integrally with the arms 84, 85. With this rotation, the detection portion 35a of the detection body 35 moves so as to pass through the front portion of the door stop portion 8a of the entrance / exit frame 80.

  At this time, if the foreign matter S is sandwiched between the door end portions E of the door panels 5a and 20a and the door stop portions 80a and 80b of the entrance / exit frames 80 and 81, the detection portion 35a of the detection body 35 is detected as the foreign matter. When the rotating shaft 83 is further rotated in contact with S, the detection unit 35a is bent into a square shape.

  Then, the detection lever 90 is rotated counterclockwise about the pin 91 against the spring 92 by the tension of the bent detection body 35a, and the actuator 30a of the detection switch 30 is pressed by the detection lever 90 to detect the detection lever. It is detected that the switch 30 is turned on and the foreign object S is sandwiched.

  FIG. 18 shows an eighth embodiment. In this embodiment, as in the case of the seventh embodiment, the rotation shaft 83 constituting the detection mechanism 25 is provided vertically inside the entrance / exit frame 80. Arms 84 and 85 are respectively attached to the upper end portion and the lower end portion of the rotating shaft 83, and these arms 84 and 85 extend forward of the entrance / exit frame 80. A detecting body 35 having a certain band plate-like rigidity is attached between the tip of the upper arm 84 and the tip of the lower arm 85.

  Each of the arms 84 and 85 is coupled to the rotary shaft 83 via a friction clutch mechanism 95, and rotates normally with the rotary shaft 83 in a normal state. When a predetermined load or more is applied to the arms 84 and 85, the friction clutch The mechanism 95 causes slippage between the rotary shaft 83 and the arms 84 and 85 so that the arms 84 and 85 are stationary at the predetermined positions.

  An auxiliary arm 96 is attached to the upper portion of the rotating shaft 83 so as to face the arm 84. The auxiliary arm 96 always rotates integrally with the rotary shaft 83. Standing walls 84 a and 96 a are integrally formed on the edge of the arm 84 and the edge of the auxiliary arm 96, respectively, and a long long hole 97 is formed in the standing wall 84 a of the arm 84. A bolt 98 is attached to 96 a, and the tip of the bolt 98 is inserted into the long hole 97.

  On the outer periphery of the bolt 98, a spring 99 is mounted between the upright walls 84a and 96a. The spring 99 elastically biases the arm 84 and the auxiliary arm 96 in directions opposite to each other. The detection switch 30 is attached to the auxiliary arm 96, and the actuator 30 a of the detection switch 30 is disposed so as to face the standing wall 84 a of the arm 84.

  In this embodiment, after the car door device and the landing door device are fully closed, the rotation shaft 83 rotates integrally with the arms 84 and 85 in the counterclockwise direction. By this rotation, the detection body 35 moves so as to pass through the front part of the door contact part 80a of the entrance / exit frame 80.

  At this time, if the foreign matter S is sandwiched between the door end portion E of the door panel 5a and the door stop portion 80a of the entrance / exit frame 80, the detection body 35 comes into contact with the foreign matter S. When the detection body 35 comes into contact with the foreign matter S, a predetermined load is applied to the arms 84 and 85, and this load causes slipping in the friction clutch mechanism 95 between the arms 84 and 85 and the rotary shaft 83. The rotation stops and the arms 84 and 85 and the detection body 35 come to rest at a position where they come into contact with the foreign object S.

  The rotating shaft 83 rotates counterclockwise regardless of whether the arms 84 and 85 and the detection body 35 are stationary. With this rotation, the auxiliary arm 96 approaches the upright wall 84a of the arm 84, and the detection switch 30 is moved by this approach. The actuator 30a is turned on while being pressed against the standing wall 84a, and it is detected that the foreign matter S is sandwiched.

  In each of the embodiments described above, the door device is a door device that opens and closes when the door panel moves to the left and right. However, this is a case of a door device that opens and closes the door when the door panel moves up and down. May be.

1 is a front view showing a foreign object pinching detection device according to a first embodiment of the present invention. The top view of the foreign material pinching detection apparatus. The perspective view of the principal part of the foreign material pinching detection apparatus. The front view which shows the operation | movement of the foreign material pinching detection apparatus in order. The flowchart which shows the flow of the first half of the operation | movement of the foreign material pinching detection apparatus. The flowchart which shows the flow of the second half of the operation | movement of the foreign material pinch detection apparatus. The perspective view which shows the principal part of the foreign material pinching detection apparatus which concerns on 2nd Embodiment of this invention. The front view which shows the foreign material pinching detection apparatus which concerns on 3rd Embodiment of this invention. The perspective view of the principal part of the foreign material pinching detection apparatus. The front view which shows the foreign material pinching detection apparatus which concerns on 4th Embodiment of this invention. The perspective view of the principal part of the foreign material pinching detection apparatus. The front view which shows the foreign material pinching detection apparatus which concerns on 5th Embodiment of this invention. The perspective view of the principal part of the foreign material pinching detection apparatus. The front view which shows the foreign material pinching detection apparatus which concerns on 6th Embodiment of this invention. The perspective view of the principal part of the foreign material pinching detection apparatus. The top view which shows the foreign material pinching detection apparatus which concerns on 7th Embodiment of this invention. The perspective view of the principal part of the foreign material pinching detection apparatus. The perspective view which shows the principal part of the foreign material pinching detection apparatus which concerns on 8th Embodiment of this invention.

Explanation of symbols

  A ... Car door device, B ... Landing door device, S ... Foreign matter, 1 ... Car, 1a ... Entrance / exit, 2 ... Door frame, 3 ... Beam material, 4 ... Hanger rail, 5a. 5b ... Door panel, 6a. 6b ... Hanger, 7a. 7b ... Hanger roller, 20a. 20b ... Door panel, 22 ... Elevator landing, 22a ... Entrance / exit, 23 ... Door safety, 23a. 23b ... Safety shoe, 25 ... Detection mechanism, 26 ... Base, 26a. 26b ... arm 27 ... guide rail 28 ... drive device 29 ... roller 30 ... detection switch 31 ... detection lever 33 ... spring 35 ... detector 35a ... detector 38 ... detection lever 40 ... spring 44 ... Bracket, 45 ... Guide rod, 46 ... Bracket, 48 ... Bracket, 50 ... Spring, 52 ... Guide rod, 54 ... Link mechanism, 55.56 ... Link lever, 64 ... Bracket, 67 ... Slide mechanism, 68 ... Rail, 69 ... Roller, 70.71 ... Bracket, 80.81 ... Entrance / exit frame, 83 ... Rotating shaft, 84.85 ... Arm, 87.88 ... Roller, 90 ... Detection lever, 92 ... Spring, 95 ... Friction clutch mechanism 96 ... Auxiliary arm, 99 ... Spring.

Claims (7)

A door device that opens and closes the doorway of the car and the elevator hall by moving the door panel,
A detection mechanism for detecting when a string-like foreign object is sandwiched at the door-closing side end of the door panel in the door closing operation of the door panel;
The detection mechanism is provided on the base body that is movable in the moving direction of the door panel, and the base body is in contact with the string-like foreign material while moving toward the door-end side end portion of the door panel. And a detection switch that detects the foreign object by operating in conjunction with an operation of contacting the foreign object of the detection body,
The detection mechanism for foreign object pinching in an elevator, wherein the detection mechanism starts a foreign object detection operation after the door panel is moved in the door closing direction and the doorway is closed.   The detection body of the detection mechanism is stretched in a state where a predetermined tension is applied to the base body by the elastic force of the spring, and resists the elastic force of the spring by the contact pressure when contacting the foreign matter. 2. The foreign object pinching detection device for an elevator according to claim 1, wherein the detection switch is operated by a bending deformation operation.   3. The elevator foreign object pinching detection apparatus according to claim 1, wherein the detection body of the detection mechanism is a flexible deformable cable-shaped member or a band-shaped member.   The detection body of the detection mechanism is rotatably attached to the base body, is elastically biased in a rotational direction away from the base body by the elastic force of a spring, and is brought into contact with the foreign object by the pressure of the contact. 2. The elevator foreign object pinching detection apparatus according to claim 1, wherein the detection switch is operated by an operation of rotating against an elastic force of the spring.   The detection body of the detection mechanism is attached to the base body through a link mechanism so as to be movable toward and away from the base body, and is elastically biased in a direction away from the base body by the elastic force of a spring. 2. The elevator foreign object pinching detection apparatus according to claim 1, wherein the detection switch is operated by an operation of moving against the elastic force of the spring with the pressure of the contact when contacting the foreign object.   The detection body of the detection mechanism is attached to the base body so as to be movable toward and away from the base body via a slide mechanism, and is elastically biased in a direction away from the base body by the elastic force of a spring. 2. The elevator foreign object pinching detection apparatus according to claim 1, wherein the detection switch is operated by an operation of moving against the elastic force of the spring with the pressure of the contact when contacting the foreign object. A door device that opens and closes the doorway of the car and the elevator hall by moving the door panel,
A detection mechanism for detecting when a string-like foreign object is sandwiched at the door-closing side end of the door panel in the door closing operation of the door panel;
The detection mechanism is attached to a rotation shaft extending in a direction substantially perpendicular to the moving direction of the door panel, a pair of arms capable of rotating integrally with the rotation shaft, and the arms mounted between the arms. A detecting body capable of coming into contact with the string-like foreign material during the operation of rotating integrally with the rotating shaft, and detecting the foreign material by operating in conjunction with the operation of the detecting body in contact with the foreign material. And a detection switch
The detection mechanism for foreign object pinching in an elevator, wherein the detection mechanism starts a foreign object detection operation after the door panel is moved in the door closing direction and the doorway is closed.

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