JP4933237B2 - Elevator door equipment - Google Patents

Description

  The present invention relates to an elevator door device capable of detecting that a string-like long foreign object is caught in an elevator door.

  The elevator is provided with a safety function of opening the door by reversing the door by pushing a foreign matter detection rod called a safety shoe that protrudes from the door-end side end of the elevator door when a carriage or the like is sandwiched. However, when a flexible long foreign object such as a string is pinched, the safety shoe cannot be pushed in sufficiently, so the long foreign object cannot be detected and the door cannot be reversed and the long foreign object is pinched. There was a risk that an accident would occur.

  In view of this, conventionally, a sensor in which a pressure detection sensor is installed in a shock absorbing rubber at an end portion on the side of an elevator door so that a long foreign object such as a string can be detected has been proposed (for example, see Patent Document 1).

Moreover, this kind of thing is applied not only to an elevator door but also to a door / window that is electrically opened and closed (see, for example, Patent Document 2).
JP 7-172745 A JP 2003-220837 A

  However, in the above-mentioned document 1, since the surroundings of the pressure sensor are covered with the buffer rubber, the contact pressure acting on the door door contact portion is absorbed by the surrounding buffer rubber, and is not sufficiently transmitted to the pressure sensor. Sensitivity may decrease.

  Moreover, in the said literature 2, although the pressure sensor is integrated in the parting seal apparatus for electric slide doors, this pressure sensor is a structure inserted in a hollow installation space. For this reason, depending on the dimensional relationship between the installation space and the pressure sensor, the insertion operation becomes difficult due to friction or the like. On the other hand, providing a lubrication member on the pressure sensor surface or inside the hollow installation space in order to reduce friction increases costs, and if the installation space is made larger than the pressure sensor to provide a gap, the contact pressure is increased. There is a problem that the detection accuracy is lowered without being transmitted to the sensor.

  The present invention has been made from the above-described prior art, and an object of the present invention is to provide an elevator door device that is easy to assemble and can detect foreign matter with high accuracy.

Wherein in order to achieve the object, the present onset Ming, a door lower top is guided by the door rail is opened and closed in the lateral direction while being guided by the parallel sill and the door rail is provided on the door stop portion of the door, the A foreign object detecting means for detecting that a foreign object has been caught in the door, and the door detecting device is configured to stop or reverse the door according to the foreign object detection. provided along the height direction of the side edge has with one is opened, and the open side formed notches, the installation space provided in the direction from the cut groove in a direction per the door The buffer member, the pressure detector installed in the installation space from the opening side of the buffer member, the buffer member, and the buffer member fitted into the cut groove from the opening side of the buffer member Between the wood is characterized by being configured and a base member for fixing the pressure sensing member.

In the configuration was the onset bright Thus, cushioning member provided along the height direction of the doorstop end is one of open, incorporates a base member which pressure detection member from the open side and the its foundation is Yes. When a foreign object is inserted into the door, the contact pressure acting on the door contact side is transmitted to the pressure detector via the buffer member. At this time, since one side of the pressure detection body is supported by the base member, the buffer member is deformed more than necessary before the pressure detection body is deformed, and the force is released, and the sensitivity of the pressure detection body is lowered. To prevent that. This makes it possible to detect foreign matter with high accuracy. Further, since the pressure detector and the base member are assembled from the open side of the buffer member, the assembly can be easily performed. Furthermore, after the pressure detection body is incorporated into the installation space from the open side of the buffer member, the pressure detection body can be sandwiched and supported between the buffer member and the base member by fitting the base member into the cut groove.

  According to a second aspect of the present invention, there is provided a metal frame member that is attached to a door stop portion of the door and covers a side surface of the buffer member.

  In the invention according to claim 2 of the present invention configured as described above, the side surface of the buffer member, that is, the end portion other than the door end side is covered with a metal frame member, so that the door end side end portion of the door is excessive. The buffer member can be protected when an external force is applied, and the pressure detector can be prevented from malfunctioning.

The present onset Ming, the buffer member, the receiving space near the pressure detecting element and the base member is characterized by having a gap formed in the height direction of the door.

In such constructed the present onset bright, by forming a void in the housing space near the pressure detecting element and the base member of the cushioning member, as a main portion of the buffer member is deformed with less contact pressure, the pressure sensing The transmission efficiency of the contact pressure to the body can be improved.

The present onset Ming, the cushioning member is characterized in that the storage space near the pressure detecting element and the base member was formed with deflection member that deforms with less pressure than other portions.

In the configuration was the onset bright Thus, a receiving space near the pressure detecting element and the base member of the cushioning member, by forming with deflection member that deforms with less pressure than other parts, with less contact pressure It is possible to improve the transmission efficiency of the contact pressure to the pressure detection body by deforming the main part of the buffer member. By forming the pressure detection body of the buffer member and the vicinity of the storage space of the base member with a flexible member that deforms with less pressure than other parts, the main part of the buffer member is deformed with less contact pressure, The transmission efficiency of the contact pressure to the pressure detector can be improved.

  According to the present invention, it is possible to reduce the accident of the elevator caused by the foreign object being caught and improve safety by detecting the foreign object, particularly a long foreign object such as a string, from being caught in the elevator door with high accuracy. Can do. In addition, since the foreign object detection means can be easily assembled, the working time and labor can be reduced.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an elevator apparatus according to the present invention will be described with reference to the drawings.

  1 is a front view of an elevator door showing an embodiment of an elevator apparatus according to the present invention, FIG. 2 is an enlarged cross-sectional view taken along line AA in FIG. 1, and FIG. FIG. 4 is a cross-sectional view showing a procedure for assembling the foreign matter detection means, and FIG. 5 is a cross-sectional view showing a state in which the foreign matter detection means is assembled.

  In the elevator apparatus of this embodiment, as shown in FIG. 1, doors 1 a and 1 b are suspended by a hanger 2 a and 2 b on a door rail 4 installed on a door rail frame 3, and hanger rollers 5 a, 5 b, 5 c and 5 d are placed on the door rail 4. The structure can be freely opened and closed by rolling, and is opened and closed by a motor (not shown). Guide shoes 6a and 6b are attached to the lower portions of the doors 1a and 1b, and the doors 1a and 1b can be opened and closed while maintaining a vertical position by sliding smoothly in a groove provided in the sill 7. I have to. In addition, door joints 8a and 8b are attached in the door height direction at the door contact side ends of the doors 1a and 1b, and foreign matter detection means 9 is provided for detecting that foreign matter is caught in the doors 1a and 1b. ing. The doors 1a and 1b are provided with a foreign object detection rod (not shown) called a safety shoe that protrudes from the door-end side end of the door 1a and 1b. A safety function is provided to open the doors 1a and 1b by being pushed in.

  Further, as shown in FIG. 2, the foreign matter detecting means 9 described above is arranged from the door joint 8a of the door 1a to the door stop side and from the door joint 8b of the door 1b to the door stop side. A pressure detecting body for detecting pressure when the doors 1a and 1b sandwich foreign objects, for example, a cable-shaped pressure sensor 10 is incorporated into the buffer member 9a. When pinching is detected, the elevators are not started even if a foreign object detection rod (not shown) is not operated, and the doors 1a and 1b are opened again. The pressure sensor 10 is configured with a mechanism that detects pressure when an external force is applied so that the pressure sensor 10 itself is crushed, for example, by touching electrodes inside the pressure sensor 10.

  Next, the configuration of the buffer member 9a will be described in detail with reference to FIG. One end of the buffer member 9a is opened, and the pressure sensor 10 and a base member serving as a base thereof, for example, a plate 11 are incorporated from the open side. A cut groove 12 into which the plate 11 is fitted is formed in the buffer member 9a in advance, and an installation space 15 in which the pressure sensor 10 is installed is formed from the cut groove 12 toward the door stop direction. As shown in FIG. 4, the assembly of the buffer member 9a, the pressure sensor 10 and the plate 11 is performed by inserting the pressure sensor 10 into the buffer member 9a, that is, in the installation space 15, and then opening the open side of the buffer member 9a. By fitting the plate 11 into the cut groove 12, the pressure sensor 10 is fixed between the inside of the buffer member 9a and the plate 11 as shown in FIG. 5, and the buffer member 9a, the pressure sensor 10 and the plate 11 are integrated. To complete. By the way, the contact pressure that acts in response to the foreign object being caught is transmitted to the pressure sensor 10 via the buffer member 9 a, so that the contact pressure is absorbed by the door-end side end of the buffer member 9 a and transmitted to the pressure sensor 10. There is no point in not having it. Therefore, it is preferable that the door-side surface receiving the contact pressure is formed of a rubber material having a predetermined hardness, not a soft material like a sponge.

  As shown in FIG. 2, the buffer member 9a assembled as described above is inserted into and fixed to a door joint 8a attached to the end of the door 1a of the elevator door 1a, and the buffer member 9b is fixed to the elevator door 1b. It inserts and fixes to the door joint 8b attached to a door stop side edge part. These joints 8a and 8b form a metal frame member that covers the side surfaces of the buffer members 9a and 9b. By doing so, for example, when the carriage collides with the door contact side of the door 1a, The shock-absorbing member 9a is protected from the impact, and the so-called malfunction, in which the pressure sensor 10 operates even when no foreign matter is sandwiched, can be prevented. Of course, the present invention is not limited to this, and a shock-absorbing member including the pressure sensor 10 may be directly attached to the door-contact side end of the door 1a. However, as shown in the present embodiment, the shock-absorbing member 9a Protruding from the door contact side end of the door 1a is only in the vicinity of the door contact surface of the buffer member 9a, and it is more convenient to realize highly accurate detection by protecting the pressure sensor 10 from impact.

  In the present embodiment, when a foreign object, for example, a string-like long foreign object is sandwiched between the doors 1a and 1b, the contact pressure acting on the door stop side according to the door closing operation with the foreign object sandwiched is: This is transmitted to the pressure sensor 10 via the buffer member 9a. At this time, since one side of the pressure sensor 10 is supported by the plate 11, the buffer member 9 a is deformed more than necessary before the pressure sensor 10 is deformed to release the force, and the sensitivity of the pressure sensor 10 is lowered. To prevent. Moreover, since the buffer member 9a and the pressure sensor 10 are always in contact with the direction of the external force applied when a foreign object is sandwiched between the doors 1a and 1b, the contact pressure is efficiently transmitted to the pressure sensor 10. Then, when the pressure sensor 10 is deformed by the contact pressure and the electrodes inside the pressure sensor 10 come into contact with each other, a detection signal is output to prevent the elevator from moving and open the doors 1a and 1b again.

  According to the present embodiment, by detecting the pinching of foreign matter, particularly long foreign matters such as strings, in the doors 1a and 1b with high accuracy, the accident of the elevator caused by the foreign matter pinching is reduced, and safety is improved. Can be achieved. In addition, the pressure sensor 10 and the plate 11 have a structure that is assembled from the open side of the buffer member 9a, and the pressure sensor 10 that is incorporated in the installation space 15 has a simple structure in which the plate 11 is fitted into the cut groove and fixed. As a result, the foreign object detection means 9, that is, the buffer member 9a, the pressure sensor 10, and the plate 11 can be easily assembled, and therefore the working time and labor can be reduced. Furthermore, the buffer member 9a is protected when an excessive external force is applied to the door contact side end portion of the door 1a by covering the portion other than the door contact side end portion with a metal frame member, that is, the joint 8a. 10 can prevent malfunction. The main purpose of this embodiment is to detect that a flexible long foreign object such as a string, which was difficult to detect with the foreign object detection rod, is sandwiched between elevator doors 1a and 1b. It is also possible to detect fingers and other foreign objects of people who have not reached the target.

  In addition, in this embodiment, although demonstrated using the double door, it cannot be overemphasized that it is applicable to a single door with the same structure. In addition, when applied to a single door, the foreign matter detection means 9 may be installed not at the door end portion of the door 1 but at the door stop portion of the car.

  Next, in order to improve the foreign matter detection sensitivity of the pressure detection body, that is, the pressure sensor 10, a device in which the shape of the buffer member 9a is devised will be described with reference to FIGS.

  6 is a cross-sectional view of a buffer member having a gap for improving sensitivity, FIG. 7 is a cross-sectional view showing a state when the buffer member in FIG. 6 detects foreign matter, and FIG. 8 is another shape for improving sensitivity. 9 is a cross-sectional view showing a state when the buffer member of FIG. 8 detects foreign matter, and FIG. 10 is a buffer member having a gap of another shape for improving sensitivity. FIG. 11 is a cross-sectional view showing a state when the buffer member of FIG. 10 detects a foreign object. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was shown in FIGS. 1-5 mentioned above.

  A portion of the buffer member 9 a that inhibits transmission of the contact pressure to the pressure sensor 10 is a member between the door stop side of the buffer member 9 a and the plate 11 that supports the pressure sensor 10. Therefore, the buffer member 9a shown in FIGS. 6 and 7 is provided with a gap 13a formed in the height direction of the door 1a in the vicinity of the storage space for the pressure sensor 10 and the plate 11. By forming the gap 13a, the main part of the buffer member 9a can be deformed with a smaller contact pressure P as shown in FIG. 7, and the transmission efficiency of the contact pressure P to the pressure sensor 10 can be improved.

  In addition, the gap formed in the height direction of the door 1a in the vicinity of the storage space of the pressure sensor 10 and the plate 11 may be one provided inside or inside the buffer member 9a or one provided outside. The number, shape, and size may be determined by the shape and size of the buffer member 9a. For example, in addition to those shown in FIGS. 6 and 7, a gap 13b having a circular cross-sectional shape is provided as shown in FIGS. 8 and 9, or one side is opened as shown in FIGS. A gap 13c can be provided. However, if the gaps 13a to 13c are too large, the buffer member 9a can be easily deformed by the contact pressure P, so that it can no longer function as the original buffer member, or even after the contact pressure P is lost. Note that there is a possibility that it will not be restored.

  Next, another method for improving the pressure detection body, that is, the foreign matter detection sensitivity of the pressure sensor 10, will be described with reference to FIGS.

  FIG. 12 is a cross-sectional view of a buffer member provided with a flexible member for improving sensitivity, and FIG. 13 is a cross-sectional view showing a state when the buffer member of FIG. 12 detects foreign matter. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was shown in FIGS. 1-5 mentioned above.

  In the buffer member 9a shown in FIGS. 6 to 12 described above, the gaps 13a to 13c are provided in the pressure sensor 10 in the portion that inhibits the transmission of the contact pressure P. However, the buffer member shown in FIGS. 9a is formed with a flexible member 14 that deforms a portion that obstructs transmission of contact pressure, that is, in the vicinity of the storage space of the pressure sensor 10 and the plate 11, with less pressure than other portions. And, as shown in FIG. 13, the deformable member 14 is deformed with a smaller contact pressure P, whereby the transmission efficiency of the contact pressure P to the pressure sensor 10 can be improved. 12 and 13 show an example in which a part of the buffer member 9a is formed by the flexible member 14. However, the gap and the flexible member 14 as shown in FIGS. You may give the device which raises the foreign substance detection sensitivity of combination pressure sensor 10 further. Needless to say, if the shape of the buffer member 9a shown in FIGS. 1 to 5 described above can sufficiently detect a long foreign object such as a string, it is not necessary to devise to increase the sensitivity of the pressure sensor 10. Yes.

It is a front view of the elevator door which shows one Embodiment of the elevator apparatus which concerns on this invention. It is an expanded sectional view which follows the cross section AA in FIG. It is a principal part block diagram of a foreign material detection means. It is sectional drawing which shows the assembly procedure of a foreign material detection means. It is sectional drawing which shows the state which assembled the foreign material detection means. It is sectional drawing of the buffer member provided with the space | gap for a sensitivity improvement. It is sectional drawing which shows a state when the buffer member of FIG. 6 detects a foreign material. It is sectional drawing of the buffer member provided with the space | gap of another shape for a sensitivity improvement. It is sectional drawing which shows a state when the buffer member of FIG. 8 detects a foreign material. It is sectional drawing of the buffer member provided with the space | gap of another shape for a sensitivity improvement. It is sectional drawing which shows a state when the buffer member of FIG. 10 detects a foreign material. It is sectional drawing of the buffer member provided with the flexible member for a sensitivity improvement. It is sectional drawing which shows a state when the buffer member of FIG. 12 detects a foreign material.

Explanation of symbols

1a, 1b Door 2 Hanger 3 Door rail frame 4 Door rail 5 Hanger roller 6 Guide shoe 7 Sill 8a, 8b Door joint (frame member)
9 Foreign matter detection means 9a, 9b Buffer member 10 Pressure sensor (pressure detector)
11 Plate (base member)
12 Incision groove 13a, 13b, 13c Air gap 14 Flexible member 15 Installation space

Claims (4)

A door whose upper part is guided by a door rail and whose lower part is guided by a sill parallel to the door rail and opens and closes in the lateral direction, and a foreign object detecting means provided at a door contact portion of the door and detecting that a foreign object is caught in the door In an elevator door device that performs stop control or reverse control of the door according to the foreign object detection,
The foreign matter detection means is provided along the height direction of the doorstop end portion of the door, the one is open, and this open side is formed in the cut groove, the doorstop direction from the notches A buffer member having an installation space provided toward the surface, a pressure detector installed in the installation space from the open side of the buffer member, the buffer member, and the cut groove from the open side of the buffer member An elevator door device comprising: a base member that is fitted into the buffer member and fixes the pressure detection body between the buffer member and the buffer member .   The elevator door device according to claim 1, further comprising a metal frame member attached to a door contact portion of the door and covering a side surface of the buffer member. The elevator door device according to claim 1, wherein the buffer member includes a gap formed in a height direction of the door in the vicinity of a storage space of the pressure detection body and the base member . 2. The elevator door device according to claim 1, wherein the buffer member is formed of a flexible member that deforms in the vicinity of the storage space of the pressure detection body and the base member with less pressure than other parts. .

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