JP4768542B2 - Elevator door safety device - Google Patents

Description

  The present invention relates to an elevator door safety device, and in particular, in an elevator that opens and closes an entrance / exit with a sliding door, when foreign objects such as passenger clothes and fingers are pulled into the door bag during the door opening operation, at least the sliding door is provided. The present invention relates to a device for decelerating.

  For example, when foreign objects such as passenger clothes or fingers are pulled into the door bag during the door opening operation, various actions are taken to detect the pull-in and slow down at least the sliding door to prevent further foreign objects from being pulled in. Intrusion prevention devices have been proposed.

For example, the technique described in Patent Document 1 installs a swing panel that can swing around a vertical axis so as to close a gap between a sleeve wall on the door pocket side of the doorway and the slide door, and swings the swing panel. A detection switch for detecting the swing of the panel is provided, and when the foreign object is drawn into the door pocket during the door opening operation, the swing panel is pressed by the foreign object and faces inward of the sleeve wall. The door swinging operation is stopped by detecting the swing by a detection switch.
JP-A-9-77440

  However, in the technique described in Patent Document 1, since the swing panel is visually recognized by the passenger, the passenger may feel uncomfortable in its presence, which is not preferable in terms of the design of the elevator and induces mischief by the passenger. As a result, the operation efficiency of the elevator may be reduced.

  In addition, since the swing panel swings in the sleeve wall, it is necessary to secure a space for it in the sleeve wall, which is a limitation on the design of the sleeve wall and is not preferable in terms of space efficiency. .

  The present invention has been made in view of the above problems, and in particular, provides an elevator door safety device that enhances the appearance quality of the elevator and makes the space efficiency more efficient by making the presence of the door safety device inconspicuous. The purpose is that.

  The invention according to claim 1 is provided with an end cover that is swingable and displaceable around a vertical axis center so as to cover the door closing direction side end face on the sleeve wall on the door pocket side of the doorway that is opened and closed by the sliding door. Detection means for detecting the swinging motion of the end cover is provided, and at least the sliding door is decelerated by the output of the detection means when the end cover swings in the direction of being pulled into the door pocket during the door opening operation. The door safety device side end surface of the sleeve wall is inclined so as to form an obtuse angle with the front side wall surface of the sliding door, while the end cover is at its entrance and exit at a stationary stationary position. The side wall surface is perpendicular to the front side wall surface of the sliding door, and the swinging motion in the direction in which the end cover is pulled into the door pocket is stationary with the end surface of the sleeve wall in the door closing direction. The angle between the entrance side wall of the end cover at the stop position is characterized by being adapted performed as the maximum swing angle.

  Here, it goes without saying that the axis serving as the center of swing of the end cover may be substantially vertical, and the side wall surface of the end cover is naturally perpendicular to the front side wall surface of the slide door. Just do it.

  Therefore, in the invention described in claim 1, since the end cover in the stationary stationary position covers the end surface of the sleeve wall in the door closing direction, the end cover functions as a vertical frame that forms an entrance / exit on the appearance. In addition, there is no sense of incongruity in its existence, and the swinging operation in the direction in which the end cover is drawn into the door pocket is performed outside the sleeve wall. It is not necessary to secure a space for swinging the end cover.

  In particular, as described in claim 4, when the front side wall surface of the sleeve wall is inclined with respect to the front side wall surface of the sliding door so as to be downwardly inclined toward the door closing direction, Since the internal space at the end in the door closing direction of the sleeve wall becomes narrow, the application of the invention according to claim 1 is effective.

  Then, as described in claim 2, when the gap between the end cover and the front side wall surface of the slide door is narrower than the gap between the sleeve wall and the front side wall surface of the slide door, The end cover itself has a function of narrowing a gap corresponding to the entrance of the door pocket and preventing foreign objects from being drawn into the door pocket in advance. In addition, since the end cover becomes thicker in the thickness direction of the slide door, the appearance of the end cover is more rigid.

  Further, as described in claim 3, the swing center of the end cover is located between the entrance / exit side wall surface of the end cover and the end surface of the sleeve wall in the stationary stationary position, It is more effective for the foreign object to be drawn into the door pocket when the corner edge of the end cover in the stationary stationary position located close to the sliding door is located closer to the door closing direction than the swing center. It is desirable to prevent it. In this case, when the end cover swings in the direction in which the end cover is drawn from the stationary stationary position into the door pocket and the corner edge is displaced so as to draw an arc in plan view, the corner edge In the initial stage of displacement, the gap is displaced in a direction to further narrow the gap between the corner edge and the front side wall surface of the slide door.

  According to a fifth aspect of the present invention, the detection means is a contact type switch, and the switch is pressed directly or indirectly by the swinging motion of the end cover. And the switch is provided in the interior space of the sleeve wall, and the car operation panel constituting at least a part of the front side wall surface of the sleeve wall. Is detachably attached to the sleeve wall and the switch is exposed to the car room by removing the car operation panel from the sleeve wall, the switch is maintained from the car room. It becomes possible.

  According to the first aspect of the present invention, since the end cover at the stationary stationary position functions as a vertical frame that forms an entrance / exit on the appearance, there is no sense of incongruity and the appearance quality is greatly improved. Moreover, mischief by passengers can be prevented. Further, it is not necessary to secure a space for swinging the end cover in the sleeve wall as in the prior art, which is preferable in terms of space efficiency, and the design freedom of the sleeve wall is improved. As described, the present invention is also applicable to the case where the front side wall surface of the sleeve wall is inclined with respect to the front side wall surface of the slide door so as to be inclined downward in the door closing direction.

  In addition, according to the invention described in claim 2, the end cover itself has a function of narrowing a gap corresponding to the entrance of the door pocket to prevent foreign objects from being drawn into the door pocket in advance. In addition to preventing foreign objects from being pulled in more effectively, the end cover becomes thicker in the thickness direction of the sliding door, increasing the rigidity of the end cover in appearance and improving the appearance quality. There is merit to do.

  Furthermore, according to the invention described in claim 3, when the end cover swings in the direction in which the end cover is drawn into the door pocket from the stationary stationary position, the corner edge portion is in the initial stage of the displacement. Is displaced in a direction to further narrow the gap between the sliding door and the front side wall surface of the sliding door, and foreign objects are more effectively prevented from being drawn into the door pocket.

  According to the invention described in claim 6, since the switch is exposed in the car room by removing the car operation panel from the sleeve wall, there is an advantage that maintenance of the switch is facilitated. .

  1 to 3 show a more specific embodiment of the present invention. FIG. 1 is a perspective view showing a gate-like entrance / exit frame that forms an entrance / exit on the elevator car side, and FIG. 2 is a perspective view of FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. 1. FIG. 3 is a plan view schematically showing the entrance / exit formed by the entrance / exit frame shown in FIG.

  As shown in FIG. 1, the entrance / exit 1 on the elevator car side is formed by a gate-shaped entrance / exit frame 2, and the entrance / exit frame 2 is a door-to-door pillar 3 and a sleeve wall 4 and a door disposed opposite to the door-to-door pillar 3. It is comprised from the curtain 5 which connects the upper part of the contact pillar 3 and the sleeve wall 4. FIG. As shown in FIG. 2, the door opening / closing type of the doorway 1 is a so-called two-piece open type, and the doorway 1 is opened and closed by the high speed sliding door 6 and the low speed sliding door 7. That is, the door driving device 9 drives the high speed sliding door 6 based on a command from the door control device 8, and the low speed sliding door 7 is interlocked with the high speed sliding door 6 and is slower than the high speed sliding door 6 as is well known. And slides in the same direction as the high-speed sliding door 6. When the doorway is fully opened, the slide doors 6 and 7 are housed in a door pocket formed on the outside of the cab wall of the sleeve wall 4. Due to the opening / closing mechanism, a predetermined gap G is provided between the low speed sliding door 7 and the sleeve wall 4 in the thickness direction of the low speed sliding door 7.

  As is well known, a safety shoe 10 is attached to the distal end of the high-speed sliding door 6 in the door closing direction.

  As shown in FIG. 3 in addition to FIG. 1, the sleeve wall 4 has a substantially trapezoidal cross section, and the car interior side wall surface 4a of the sleeve wall 4 is inclined downward toward the door closing direction. The sliding doors 6 and 7 are inclined with respect to the front side wall surfaces 6a and 7a, and the thickness of the sleeve wall 4 is reduced in the door closing direction. The car interior side wall surface 4 a of the sleeve wall 4 is substantially constituted by a car operation panel 11, and the car operation panel 11 is attached to and detached from the sleeve wall 4 by a leaf spring 12 fixed to the inner surface of the sleeve wall 4. It is attached as possible.

  FIG. 4 is a view showing a state in which the car operation panel 11 is removed from the sleeve wall 4 in FIG.

  That is, the engaging portion 11a formed to protrude on the rear surface side of the car operation panel 11 is engaged with the engaged portion 12a of the leaf spring 12, and the car operation panel 11 is directed toward the inside of the car in a so-called forced removal manner. As shown in FIG. 4, the car operation panel 11 can be removed from the sleeve wall 4 to expose the interior space of the sleeve wall 4 in the car room. The leaf springs 12 are respectively provided at the upper and lower portions of the sleeve wall 4, and the car operation panel 11 is held in a state of being attached to the sleeve wall 4 by the upper and lower leaf springs 12.

  Further, as shown in FIG. 3 in addition to FIG. 1, the end cover 14 is provided with a hinge 13 so that the door closing direction side end surface 4 b of the sleeve wall 4 covers the door closing direction side end surface 4 b over almost the entire height of the doorway 1. The end cover 14 is swingably displaceable around the vertical axis about the vertical hinge pin of the hinge 13 as an axis.

  The end cover 14 includes an entrance / exit side wall surface 14a that is perpendicular to the front side wall surface 7a of the low-speed slide door 7 at a stationary stationary position, a slide door side wall surface 14b and an anti-slide door that are perpendicular to the entrance / exit side wall surface 14a. The slide door side wall surface 14b is wider in the door opening / closing direction than the anti-slide door side wall surface 14c. The end cover 14 in the stationary stationary position functions as a vertical frame of the entrance / exit 1 in appearance.

  Further, the slide door side wall surface 14b in the stationary stationary position of the end cover 14 protrudes toward the low speed slide door 7 side from the door pocket side wall surface 4c of the sleeve wall 4 parallel to the slide door side wall surface 14b. The gap F between the end cover 14 and the low speed slide door 7 is narrower than the gap G between the sleeve wall 4 and the low speed slide door 7.

  On the other hand, one end of the hinge 13 is fixed to the end face 4b of the sleeve wall 4 in the door closing direction, and the other end of the hinge 13 protrudes on the back side of the entrance / exit side wall surface 14 of the end cover 14. The center of swinging of the end cover 14 is located between the inlet / outlet side wall surface 14a and the door closing direction side end surface 4b of the sleeve wall 4, and the inlet / outlet side wall surface 14a of the end cover 14 and the slide are located. A corner edge portion 14e formed with the door side wall surface 14b is located closer to the door closing direction than the swing center of the end cover 14. In other words, the corner edge portion 14e is offset from the swing center of the end cover 14 toward the door closing direction by the mounting leg portion 14d.

  The hinge 13 has a biasing function for biasing the end cover 14 in a direction away from the sleeve wall 4 by a torsion spring (not shown) and a stopper function for holding the end cover 14 in a steady stationary position. Yes. Here, as means for urging the end cover 14 in the direction away from the sleeve wall 4, an elastic member such as a coil spring or rubber may be used in addition to the torsion spring described above.

  On the other hand, the door closing direction side end surface 4b of the sleeve wall 4 is inclined so as to form an obtuse angle with the front side wall surface 7a of the low-speed sliding door 7, and the swinging motion in the direction in which the end cover 14 is drawn into the door pocket is performed. The angle formed by the door closing direction side end surface 4b of the wall 4 and the entrance / exit side wall surface 14a of the end cover 14 at the stationary stationary position is set as the maximum swing angle θ.

  5 is a cross-sectional view taken along the line BB in FIG. 1, and FIG. 6 is a perspective view of a portion corresponding to FIG.

  As shown in FIGS. 5 and 6, a micro switch 15 is provided in the internal space of the sleeve wall 4 as detection means, and a shaft 16 a is provided so as to penetrate the door pocket side wall surface 4 c of the sleeve wall 4. An intermediate plate 16b that contacts the end cover 14 is provided at the outer end of the sleeve wall 4 of the shaft 16a, and a dog 16c that contacts the microswitch 15 is provided at the inner end of the sleeve wall 4. The shaft 16a, the intermediate plate 16b, and the dog 16c are integrally coupled to each other, and the micro-switch is operated through the intermediate plate 16b, the shaft 16a, and the dog 16c by swinging the end cover 14 into the door pocket. 15 detects. That is, the swinging operation in the direction in which the end cover 14 is drawn into the door pocket is transmitted to the micro switch 15 after the displacement amount in the door opening direction is reduced by the intermediate plate 16b and the dog 16c.

  Then, when the end cover 14 is pulled into the door pocket and swings in the direction, the microswitch 15 is indirectly pressed through the dog 16c to substantially turn on (see FIGS. 8 and 9). 2, the foreign object detection signal is output to the door control device 8. Further, the intermediate plate 16b is urged so as to always contact the end cover 14 by a torsion spring (not shown), and when the end cover 14 returns to the stationary stationary position, the intermediate plate 16b, the shaft 16a, and the dog are moved accordingly. 16c is also restored to release the ON operation state of the micro switch 15.

  The micro switch 15 is exposed in the car room when the car operation panel 11 is removed from the sleeve wall 4.

  FIG. 7 is a flowchart showing the control contents of the door control device 8 during the door opening operation, and FIGS. 8 and 9 are views showing the state where the door safety device is activated in FIGS.

  In the elevator door safety device configured as described above, as shown in FIG. 7, the door driving device 9 starts the door opening operation based on the command of the door control device 8 (step S <b> 1), and then the door opening operation is in progress. The door control device 8 constantly monitors the operation of the microswitch 9 (steps S2 to S4).

  If a foreign object such as a passenger's finger or clothes is drawn into the gap F during the door opening operation, the entrance / exit side wall surface 14a of the end cover 14 is pressed in the door opening direction by the foreign object, as shown in FIGS. The end cover 14 swings within the range up to the maximum swing angle θ described above in the direction in which the end cover 14 is pulled into the door pocket.

  Here, when the end cover 14 is swung in the direction of being pulled into the door pocket, the corner edge portion 14e of the end cover 14 facing the front side wall surface 7a of the low-speed sliding door 7 draws an arc in plan view. At the initial stage of the displacement, the corner edge portion 14e moves in the direction of narrowing the gap F to prevent foreign matter from being drawn into the gap F.

  At the same time, the intermediate plate 16b is pressed by the end cover 14 and rotates together with the shaft 16a and the dog 16c. The dog 16c comes into direct contact with the microswitch 15 and the microswitch 15 is substantially turned on, and a foreign matter detection signal is output. Output to the door control device 8.

  When the foreign object detection signal is taken into the door control device 8, the door control device 8 immediately stops the door opening operation of the door drive device 9 (step S5). Alternatively, it can be dealt with by reducing the door opening speed and securing time for the passenger to pull the foreign object away from the end cover 14.

  Thereafter, after confirming that no foreign matter is in contact with the end cover 14, that is, no foreign matter detection signal is output to the door control device 8 (steps S6 to S7), the door is opened at a speed lower than the normal door opening speed. The opening / closing operation is performed to fully open the entrance / exit 1 (steps S8 to S11). If a foreign object is detected again during the low-speed door opening operation, the process returns to step S5.

  In addition, when a foreign object detection signal is taken into the door control device 8 in a state other than during the door opening operation, an application may be considered in which the passenger is alerted by an announcement or the like.

  Therefore, according to the elevator door safety device configured as described above, since the end cover 14 in the stationary stationary position functions as a vertical frame that forms the entrance / exit, there is no sense of incongruity in the presence of the end cover 14 on the exterior, and the passenger In addition to preventing mischief due to, the appearance quality is dramatically improved. Moreover, it is not necessary to secure a space for swinging the end cover 14 in the sleeve wall 4 as in the conventional case, which is preferable in terms of space efficiency, and a door safety device is installed regardless of the shape of the sleeve wall. Can do.

  Further, the end cover 14 itself narrows the gap corresponding to the entrance of the door pocket, and when the end cover 14 swings in the direction in which the end cover 14 is drawn from the stationary stationary position into the door pocket, the corner edge portion 14e is swung. Since the gap between the low-speed sliding door 7 and the front side wall surface 7a is displaced in the initial stage of the moving operation, the foreign matter is more effectively prevented from being drawn into the door pocket. .

  Furthermore, since the entrance / exit side wall surface 14a of the end cover 14 is wide in the thickness direction of the slide doors 6 and 7, the rigidity of the end cover 14 is increased in appearance and gives a profound impression. There is a merit to improve more.

  In addition, since the micro switch 15 is exposed in the car room by removing the car operation panel 11 from the sleeve wall 4, the micro switch 15 can be easily accessed from the car room, and maintenance is easy. There is a merit to improve.

  In the present embodiment, the present invention is applied to the two-piece single door type entrance / exit 1 formed in the car. However, the present invention can be applied to the entrance / exit on the landing side, regardless of the door opening / closing type. Needless to say, for example, as a modification of the present embodiment, as shown in FIG. 10, the present invention can also be applied to a double door double doorway 17 that is opened and closed by the left and right sliding doors 18 a and 18 b. In this case, the end covers 14 are respectively disposed on the left and right sleeve walls 19 and 20 in the same manner as in the first embodiment.

  Further, as a detecting means for detecting the swinging motion of the end cover 14, a proximity switch 21 shown in FIG. 11 as another modified example of the present embodiment or a modified example of the present embodiment shown in FIG. A sheet-like pressure sensor 22 may be used. Here, when the pressure sensor 22 is used as the detection means, the pressure sensor 22 may be installed so as to be sandwiched between both ends of the hinge 13 as shown in FIG.

The perspective view which shows the entrance / exit frame which forms an entrance / exit as 1st Embodiment of this invention. The top view which shows the outline of the entrance formed in the cage | basket | car of an elevator. AA sectional drawing in FIG. The figure which shows the state which removed the cage operation panel from the sleeve wall in FIG. BB sectional drawing of FIG. The perspective view which looked at the site | part corresponded to FIG. 5 among sleeve walls from the door pocket side. The flowchart which shows the control content of the door control apparatus at the time of door opening operation | movement. The figure which shows the state which the door safety device operate | moved in FIG. The figure which shows the state which the door safety device operate | moved in FIG. The figure which shows the modification of 1st Embodiment. The figure which shows another modification of 1st Embodiment. The figure which shows another modification of 1st Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Entrance / exit 4 ... Sleeve wall 6 ... High speed sliding door 7 ... Low speed sliding door 11 ... Car operation panel 14 ... End cover 15 ... Micro switch (detection means)
16a ... shaft 16b ... intermediate plate 16c ... dog 17 ... doorway 18a, 18b ... sliding door 19, 20 ... sleeve wall 21 ... proximity switch (detection means)
22: Pressure sensor (detection means)

Claims (6)

An end cover that can be swung and displaced around the vertical axis is provided on the sleeve wall on the door pocket side of the doorway that is opened and closed by the sliding door, and the swinging movement of the end cover is detected. An elevator door safety device provided with detection means and configured to decelerate at least the sliding door with the output of the detection means when the end cover swings in the direction of being pulled into the door pocket during the door opening operation. And
The end surface of the sleeve wall in the door closing direction is inclined so as to form an obtuse angle with the front side wall surface of the slide door, while the end cover has a side wall surface perpendicular to the front side wall surface of the slide door at a stationary position. And
The swinging operation in the direction in which the end cover is pulled into the door pocket is performed by setting the angle formed by the door closing direction side end surface of the sleeve wall and the entrance / exit side wall surface of the end cover at the stationary stationary position as the maximum swinging angle. An elevator door safety device characterized by the above.   The elevator door safety according to claim 1, wherein a gap between the end cover and the front side wall surface of the sliding door is narrower than a gap between the sleeve wall and the front side wall surface of the sliding door. apparatus.   The swing center of the end cover is located between the entrance / exit side wall surface of the end cover at the stationary stationary position and the door closing direction side end surface of the sleeve wall, and slides among the end covers at the stationary stationary position. 3. The elevator door safety device according to claim 1, wherein a corner edge portion adjacent to the door is located closer to the door closing direction than the swing center. 4.   The door of the elevator according to any one of claims 1 to 3, wherein the front side wall surface of the sleeve wall is inclined with respect to the front side wall surface of the sliding door so as to be inclined downward in the door closing direction. Safety device.   The detection means is a contact type switch, and the switch is pressed directly or indirectly by a swinging operation of the end cover. The elevator door safety device according to any one of the above. The switch is provided in the interior space of the sleeve wall, and a car operation panel constituting at least a part of the front side wall surface of the sleeve wall is detachably attached to the sleeve wall,
6. The elevator door safety apparatus according to claim 5, wherein the switch is exposed in the car room by removing a car operation panel from the sleeve wall.

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