JPH0455284A - Safety device of elevator door - Google Patents

Abstract

PURPOSE:To detect an obstacle at the entrance side in a simplified structure by energizing an engaging element to the closing direction by an energizing means to squeeze an engaging piece provided at the closing side, and installing a detector to generate a door opening signal by abutting with the engaging element when a load is applied in the door opening direction, to the engaging piece at the opening side. CONSTITUTION:When both doors are closed, the upper and the lower chuck rollers 14 and 15 are separated as the amount of the running gap (a) from the first and the second vanes 11 and 12 respectively, and both chuck rollers 14 and 15 are slipped as the amount of the unlocking stroke (b) and the entrance door 3 is locked. When a hand or a substance touches the striking head of the entrance door 3, the entrance door 3 moves back at the distance (the running gap a X 2 + the unlocking stroke b) from the entrance door 2, and the lower chuck roller 15 is abutted to a tape switch 13 installed to the second vane 12. As a result, the detecting signal of the tape switch 13 is delivered to a control device, and the elevator door 2 and the entrance door 3 are turned back. Consequently, a trouble such that the hand of a passenger is caught to the door can be prevented.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a safety device for elevator doors that prevents accidents caused by the door being caught in the door, and in particular, a safety device for elevator doors that prevents accidents from being caught in the landing side. It is related to.

[Prior Art] A conventional elevator door safety device is shown in FIG. 8.

FIG. 8 is a front view showing a conventional elevator door safety device.

In the figure, (1) is an elevator car, (2) is a single-opening elevator door, and (3) is a single-opening landing door. (4
) is attached to the north part of the elevator door (2), a hanger (5) is a roller pivotally attached to the hanger (4), and (6) guides the travel of the roller (5), and a hanger (5) is attached to the north part of the elevator door (2). 2), and (7) is a hanger case that covers the hanger (4), roller (5), and rail (6).

(21) is a safety edge installed parallel to the bulge of the elevator door (2);
It is slidable in the traveling direction of the elevator car (2), and protrudes slightly forward of the elevator car (2) when it is closed. (21a) is a contact portion provided on the safety edge (21). (22) is a microswitch mounted on the elevator door (2) at a predetermined distance from the contact portion (21a) of the safety edge.

Next, a conventional elevator υ1 configured as shown in 1-
The operation of the safety device of i will be explained.

When the elevator door (2) closes, if an obstacle such as a passenger's hand or an object comes into contact with the safety edge (21), the safety edge (21) is pushed back in the opposite direction and the abutting part (21a) Press the switch (22). Then, a detection signal is sent from this microswitch (22) to a control device (not shown), and the elevator door (
2) and the landing door (3) are opened. This ensures passenger safety.

[Problems to be Solved by the Invention] Since the conventional elevator door safety device is configured as described above, it cannot be used when an obstacle straddles the elevator door (2) and the landing door (3), or when the elevator door When near the door (2), it comes into contact with the safety edge (21), so the elevator door (2) and the landing door (3) are reversed. However, if the obstacle is near the landing door (3) and does not come into contact with the safety edge (21), it will not be detected and will not be reversed. Further, when attempting to intentionally reverse the vehicle from the landing side, there was a risk that the safety edge (21) could not be touched and the vehicle would be caught in the door.

Therefore, in order to solve this kind of problem, the Japanese Patent Laid-Open Publication No. 52
There is a technique published in Publication No. -99543.

The technology published in this publication is a door device having an elevator door and a landing door that are opened and closed by being engaged with each other by an engaging element and an engaging body, by providing a support leg, a holding device, and a suppressing body to prevent the engaging element and the engaging body from being closed. At least one side is disposed so as to be displaceable with respect to the door, and when the opening/closing operation of the door is restricted, the detection device is operated to control the door. According to this, when the movement of at least one of the elevator door and the landing door is obstructed by an obstacle, the door can be reversed to ensure the safety of passengers. However, support legs, holding device,
Since the suppressor is provided, the device is complicated.

Therefore, an object of the present invention is to provide a safety device for an elevator that can reliably detect obstacles on the hall side with a simplified structure.

A detector is attached to the engagement piece on the open side, which generates a door open signal when the door comes into contact with the door.

[Function] When an obstacle comes into contact with the elevator door and the landing door during closing, it is detected that the engaging element interposed between the pair of engaging pieces is caught by the opening side engaging piece. Contact with the container.

Then, a detection signal is generated from this detector and sent to the control device, and the elevator door and hall door are opened.

[Means for Solving the Problems] A safety device for an elevator door according to the present invention is provided with a pair of engaging pieces on the elevator door at a predetermined interval in the opening/closing direction, and the distance between the pair of engaging pieces is larger than the interval between the pair of engaging pieces. An engaging element having a small width and interposed between the engaging pieces and engaging with the engaging pieces to open and close the door is provided on the landing door, and a biasing means moves the engaging element in the closing direction f= The engaging piece on the closing side is pressed by one force, and when a load is applied in the opening direction, the engaging piece [Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 6. I will explain.

Figures 1 to 6 show a safety device for an elevator door according to an embodiment of the present invention. Figure 3 is a front view of Figure 2, Figure 4 is a front view of the state when an obstacle comes into contact with the landing door while the door is closing, and Figure 5 is the same as Figure 4. The plan view and FIG. 6 are pressure views showing the entire area closer of the landing door. In the figure, the same reference numerals as in FIG. 8 indicate parts that are the same as or correspond to conventional components.
The explanation thereof will be omitted here.

In the figure, (8) is a heel provided on the outside of the landing door (3), which is suspended from the end of the hanger case (7) and is connected via a roller (9) pivotally connected to the hanger (4). guide(
10) and is designed to slide up and down inside. These m (8), rollers (9), and guides (10) constitute a full area closer that always suppresses the landing door (3) in the closing direction. (11) and (12) are provided on the outside of the elevator b↑(2), and are a pair of first vanes and second vanes that face each other with a predetermined interval and are attached in the vertical direction. The first vane (11) is provided on the closed side, and the second vane (12) is provided on the open side, and furthermore, a tape switch (13) is provided on the inner surface of the second vane (12). Tori (-J has been removed.C]-4
) and (]-]5 are the upper and lower gripping rollers installed on the outside of the landing door (3), both of which are attached to the first vane (11) and the second vane (12). The size of the gap is smaller than that of the gap.

Next, the operation of the elevator door safety device of this embodiment configured as described above will be explained.

First, when the door is fully closed, -1
The partial gripping roller (14) is separated from the first vane (11), the lower gripping roller (15) is separated from the second vane (12) by a traveling gap a, and the elevator door (2) is separated from the landing door (3). This prevents them from colliding with each other when passing each other.

Next, during closing, as shown in Figures 2 and 3, the landing door (3) is constantly subjected to a tensile force F in the closing direction by the area closer, so the upper grip roller (
14) and the lower gripping roller (15) are both pressed against the first vane (11). In addition, the above-mentioned area closer is
This is generally provided to prevent the locking device of the landing door (3) from self-locking, and because the weight (8) is located on the open side from the hanging point of the hanger case (7), the roller ( 9) is constantly applied with a force F in the closing direction, pressing the landing door (3) in the closing direction. In this way, the elevator door (2) and the hall door (3) move simultaneously in the closing direction. Since the landing door (3) is ahead of the elevator door (2) by the traveling gap a, it is closed first. The elevator door (2) is then closed at its end by means of a drive which is provided in one part.

When both doors are completely closed, the 1 part grip roller (1-4
) and the lower gripping roller (15) are the first vane (11)
and the second vane (12) by a traveling gap a, and the -1 partial gripping roller (14) and the lower gripping roller (15) are deviated by an unlocking stroke b, so that the landing door (3) is It is locked and cannot be opened from the landing side.

After reaching this state, the elevator car (1) starts moving up and down.

Next, if your hand or object touches the bump of the landing door (3) while it is closing, as shown in Figures 4 and 5,
3) compared to the elevator door (2) (travel gap a x
2+unlocking stroke b), the lower gripping roller (15) abuts the tape switch (13) mounted inside the second vane (1-2).

Then, a detection signal from the tape switch (13) is sent to a control device (not shown), and the elevator door (2) and hall door (3) are reversed. This prevents accidents such as passengers' hands being caught.

In this way, the elevator door safety device of the above embodiment is
A first vane (11) and a second vane (12) as a pair of engaging pieces are provided on the elevator door (2) at a predetermined interval in the opening/closing direction, and the interval is smaller than the interval between the pair of engaging pieces. The -Jx part gripping roller (14) and lower gripping roller (15), which are interposed between the engaging pieces and have a width and engage with the engaging pieces to open and close the door, are used as the engaging rollers (14) and lower gripping rollers (15) on the landing door. (3
), the engaging element is urged in the closing direction by a weight (8), a roller (9), and a guide (10) which are urging means, and the first vane (1 ]) is pressed, and a tape switch (13) on the opening side serves as a detector that comes into contact with the engaging element and generates door opening when a load is applied in the opening direction. It is attached to the second vane (12).

Therefore, according to the above embodiment, the tape switch (13) is not attached to the second vane (12) which is the engagement means of the door.
Since it is only one digit, obstacles on the landing side can be reliably detected with a simplified structure. Furthermore, the landing door (3) can also have the function of a safety edge, and there is no need to provide a safety edge at the end of the elevator door (2), so space can be saved.

Furthermore, since the technology published in Japanese Patent Application Laid-Open No. 5199543 provides a pressing body to hold the engaging body in a predetermined position during normal door opening and closing, a relatively large contact force is applied when an obstacle comes into contact with the engaging body. Otherwise, the detector would not be activated, but in the embodiment of the present invention, such a suppressor is not provided, so that the contact force experienced by the passenger can be reduced.

By the way, in the above embodiment, the conventional safety edge is omitted, but when implementing the present invention, this safety edge is not prohibited and may be added to the above embodiment. Here, FIG. 7 shows a combination of the embodiment described in -1- and the conventional Safety Edge.

FIG. 7 is a plan view showing another embodiment of the elevator door safety device according to the present invention. In the drawings, the same reference numerals as in FIGS. 1 to 6 and 8 indicate parts that are the same as or correspond to the components of the conventional example and the embodiment described above.

That is, by combining the safety edge (2) of the conventional example with the bump of the elevator door (2) in the above embodiment, both the elevator door (2) and the landing door (3) have a reversing function. This can further improve safety.

Further, the detector of the above embodiment has a tape switch (13)
However, when implementing the present invention, the present invention is not limited to this, and various types of detectors such as microswitches can be used.

[Effects of the Invention] As described above, the elevator door safety device of the present invention includes a pair of engagement pieces provided on the elevator door, and an engagement element on the landing door that engages with the engagement pieces to open and close the door. The engaging means is provided with a force means to force the engaging piece in the closing direction to press the closing side engagement piece, and when a load is applied in the opening direction, it comes into contact with the engaging piece and closes the door. A detector for generating a release signal is installed on the engagement piece on the release side.

Therefore, since it is only necessary to attach the detector to the open side of the pair of engagement pieces that are the carp engagement means, it is possible to reliably detect obstacles on the landing side with a simplified structure.

[Brief explanation of the drawing]

Figure 1 is a front view showing the elevator door safety device according to an embodiment of the present invention when the door is fully closed;
The figure is a front view showing a state in which the door is in the middle of closing in an elevator door safety device according to an embodiment of the present invention, FIG. 3 is a plan view of FIG. 2, and FIG. 4 is an elevator door according to an embodiment of the present invention. FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a front view of the elevator door according to an embodiment of the present invention. FIG. 7 is a plan view showing another embodiment of the elevator door safety device according to the present invention, and FIG. 8 is a front view showing a conventional elevator door safety device. It is. In the figure, 2: elevator door 3: landing door 8: weight 9: roller 10 guide 11: first vane 12: second vane 13: tape switch 14: upper gripping roller 1.5: lower gripping roller. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. iILNovember 28, 2013

Claims (1)

[Scope of Claims] A pair of engaging pieces provided on the elevator door at a predetermined interval in the opening/closing direction; and a pair of engaging pieces provided on the landing door and having a width smaller than the spacing between the pair of engaging pieces. an engaging element that is interposed between the engaging pieces and engages with the engaging piece to open and close the door; and an urging force that urges the engaging element in a closing direction and presses the closing side engaging piece. and a detector that is attached to the engagement piece on the opening side and that comes into contact with the engagement piece and generates a door opening signal when a load is applied in the opening direction. Safety device.