JP5937881B2 - Elevator door equipment - Google Patents

Description

  The present invention relates to an elevator door device.

  In general, when an object is sandwiched in a door, a foreign object detection rod called a safety shoe is pushed into the door to detect the foreign object, and the door is controlled to stop or reverse. Safety function is provided. However, when a string-like flexible long foreign object is caught in the door, the safety shoe cannot be fully pushed in to detect the foreign object, and the car may move with the long foreign object held in the door. Was assumed.

  Therefore, conventionally, one of the door contact portions of the door has a convex cross-section cushion, the other has a concave cross-section, and a pressure-sensitive sensor that detects that the convex cross-section cushion has been pressed is provided. When in the closed state, the convex section of the convex cross-section cushion and the concave section of the concave cross-section body are engaged with each other, so that a string-like flexible long foreign object sandwiched between doors can be detected. The thing is proposed (for example, refer patent document 1, 2).

JP 2008-143619 A JP 2011-102164 A

  However, in the above-described conventional door device, the gap between the convex shape portion and the concave shape portion is in a state where the convex shape portion of the convex cross section cushion and the concave shape portion of the concave cross section mesh with each other. High foreign matter detection sensitivity is obtained by setting both the traveling direction and the door thickness direction to be relatively small. However, if the door installation accuracy is slightly out of order, the convex cross-section buffer is used when the door is closed. The engagement between the convex portion of the body and the concave portion of the concave cross-sectional body is displaced, and foreign matter detection cannot be performed accurately. Therefore, there is a problem that high door installation accuracy is required and the installation work becomes difficult.

  The present invention has been made from the above-described prior art, and an object thereof is to provide an elevator door device that can maintain high foreign matter detection sensitivity without being affected by door installation accuracy. .

In order to achieve the above object, the present invention provides a convex cross-section cushion provided on one side of a door door stop, and a concave cross section provided on the other side of the door door stop and facing the convex cross-section cushion. A body, a pressure-sensitive sensor disposed on the back side of the convex cross-section buffer, and detecting that the convex cross-section buffer is pressed, and the door is controlled to stop or reverse when the pressure sensor operates. A control portion, and when the door is fully closed, the convex portion of the convex cross-sectional cushioning body and the concave shape portion of the concave cross-sectional body mesh with each other in the gap thickness direction in the door thickness direction. Each is set to be equal to or larger than the width of the base of the convex portion.

  In the present invention configured as described above, each of the both-side gap dimensions in the door thickness direction when the convex shape portion of the convex cross-sectional cushioning body and the concave shape portion of the concave cross-sectional body mesh with each other when the door is fully closed. A convex cross section when the door is fully closed by setting it to be equal to or greater than the width dimension of the shape part, that is, by increasing the opening width dimension of the concave shape part in the door thickness direction than the conventional one. The allowable range of engagement between the convex part of the shock absorber and the concave part of the concave cross section can be expanded, thereby enabling detection of long foreign objects without being affected by the door installation accuracy. it can.

  Further, the present invention is characterized in that the hardness of the concave cross-sectional body is higher than the hardness of the convex cross-sectional buffer body.

  According to the present invention, it is possible to maintain high foreign matter detection sensitivity without being affected by the door installation accuracy, thereby reducing the door installation accuracy and improving the workability of the door installation work. it can. Further, even if a slight deviation occurs in the installation accuracy of the door, it is possible to reliably detect a long foreign object and maintain safety.

It is a front view of the door apparatus of the elevator which shows one Example of the door apparatus of the elevator which concerns on this invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is a schematic block diagram of an elevator.

  Embodiments of an elevator door device according to the present invention will be described below with reference to the drawings.

  As shown in FIG. 3, an elevator 1 to which the present invention is applied includes a car 3 and a counterweight 4 that move up and down in a hoistway 2, a rope 5 that holds the car 3 and the counterweight 4, and this rope. 5 and a hoisting machine 6 having a motor (not shown) that drives the sheave, and the rotational torque of the sheave 6a is transmitted to the rope 5 by frictional force, The car 3 and the counterweight 4 are moved.

  As shown in FIG. 1, the doors 7 a and 7 b of the elevator 1 are suspended on the door rail 10 installed on the door rail frame 9 by hangers 8 a and 8 b, and the hanger rollers 11 a, 11 b, 11 c and 11 d roll on the door rail 10. Thus, the structure can be freely opened and closed, and is driven to open and close by a motor (not shown). Guide shoes 12a and 12b are attached to the lower portions of the doors 7a and 7b, and can be opened and closed while the doors 7a and 7b are kept vertical by sliding smoothly in the grooves provided in the sill 13. I have to. Further, door joints 14a and 14b are attached to the door door end portions of the doors 7a and 7b along the door height direction, and a convex cross-section cushioning body 15 is provided from the inside of the door joint 14a to the door stop side. In addition, a concave cross-sectional body 16 is provided from the inside of the door joint 14b to the door stop side.

  As shown in FIG. 2, the convex cross-section buffer 15 includes a base member 15 a having a first flat surface 15 a 1 at a substantially central portion along the door thickness direction of the door door contact side end, and the base member. 15a, a convex portion 15b1 is provided on the surface of the central portion along the door thickness direction of the door door end side, and a base is provided on the back surface of the central portion of the door door end side portion along the door thickness direction. The member 15a is divided into a cover member 15b having a first flat surface 15a1 and a second flat surface 15b2 facing the first flat surface 15a1. The buffer member 16 is formed of rubber having a predetermined hardness.

  As shown in FIG. 2, the concave cross-sectional body 16 includes a concave-shaped portion 16 a for avoiding interference with the convex-shaped portion 15 b 1 of the convex cross-sectional cushioning body 15 when the door is fully closed. In particular, in the present embodiment, the both-side gap dimension h1 in the door thickness direction when the convex shaped portion 15b1 of the convex sectional cushioning body 15 and the concave shaped portion 16a of the concave sectional body 16 are engaged when the door is fully closed. , H2 are set to be equal to or greater than the width dimension h3 of the convex portion 15b1. That is, the opening width dimension of the concave shape portion 16a in the door thickness direction is set to about three times the width dimension of the convex shape portion 15b1. Further, the concave cross-sectional body 16 is formed of rubber having a higher hardness than the convex cross-section buffer body 15.

  A flat pressure sensor 17 is arranged between the first flat surface 15a1 and the second flat surface 15b2.

  In this embodiment, when a foreign object, for example, a string-like long foreign object is sandwiched between the doors 7a and 7b, the contact pressure acting on the door-stop side in accordance with the door closing operation with the foreign object sandwiched is: This is transmitted to the pressure sensor 17 via the cover member 15b. At this time, a long foreign object is sandwiched between the convex cross-section buffer 15 and the concave cross-section body 16, but the hardness of the concave cross-section body 16 is set higher than that of the convex cross-section buffer 15. Thus, the pressure sensor 17 supported by the base member 15a by the surface contact is reliably deformed to detect the foreign matter. In this way, the pressure sensor 17 is deformed by the contact pressure, and a detection signal is output in response to the contact of the electrodes inside the pressure sensor 17, thereby preventing the elevator from moving and opening the doors 7a and 7b again. Let

  According to this embodiment, when the door is fully closed, the both-side gap dimensions h1 and h2 in the door thickness direction when the convex shape portion 15b1 of the convex cross-section cushion 15 and the concave shape portion 16a of the concave cross-section body 16 are engaged with each other. Is set to be equal to or larger than the width dimension h3 of the convex-shaped part 15b1, that is, the opening width dimension in the door thickness direction of the concave-shaped part 16a is made larger than that of the conventional one. When fully closed, the permissible range of meshing between the convex portion 15b1 of the convex cross-section cushion 15 and the concave portion 16a of the concave cross-section 16 can be expanded, thereby being affected by the accuracy of door installation. Therefore, it is possible to detect a long foreign object.

  In addition, since the hardness of the concave cross-section 16 is set higher than that of the convex cross-section cushion 15, the cover member 15b can be reliably deformed when foreign matter is caught in the doors 7a and 7b. Thus, the pressure can be reliably transmitted to the pressure-sensitive sensor 17, and a decrease in the foreign matter detection sensitivity can be prevented. Therefore, high foreign matter detection sensitivity can be maintained without being affected by the door installation accuracy, whereby the door installation accuracy is relaxed, and the workability of the door installation work can be improved. Moreover, even if a slight deviation occurs in the installation accuracy of the doors 7a and 7b, it is possible to reliably detect long foreign matters and maintain safety.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Hoistway 3 Passenger car 4 Counterweight 5 Rope 6 Hoisting machine 6a Sheave 7a, 7b Door 8a, 8b Hanger 9 Door rail frame 10 Door rail 11a-11d Hanger roller 12a, 12b Guide shoe 13 Sill 14a, 14b Door ground Convex section buffer 15a Base member 15a1 First flat surface 15b Cover member 15b1 Convex shape portion 15b2 Second flat surface 16 Concave cross section 16a Concave shape portion 17 Pressure sensor

Claims (2)

A convex cross-section cushion provided on one side of the door door stop, a concave cross-section provided on the other side of the door door stop, facing the convex cross-section cushion, and the convex cross-section cushion on the back side A pressure sensor that is disposed and detects that the convex cross-section buffer is pressed, and a controller that controls the stop or reverse of the door when the pressure sensor is operated. The width dimension of the base of the convex portion is defined as each of the gaps on both sides in the door thickness direction when the convex portion of the convex cross-section cushion and the concave portion of the concave cross-section engage with each other when fully closed. Elevator door device characterized in that it is set equal to or higher than the above. The elevator door device according to claim 1, wherein the hardness of the concave cross-sectional body is higher than the hardness of the convex cross-sectional cushioning body.

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