JPH07106866B2 - Elevator hall door closure detection device - Google Patents

Description

Description: [Industrial field of application] The present invention relates to an elevator hall door closing detection device.

[Prior Art] FIG. 7 is a front view showing an example of the overall configuration of a conventional elevator hall door closing detection device, and FIG. 8 is a plan view of a main part of FIG. 7, FIGS. 9 (a) and 9 (b). ), (C) and (d) show the details of the combination of the contact blades formed by the short-circuit contacts and the electric insulators shown by reference numerals 6 and 7 in FIG. 7 (see Japanese Patent Laid-Open No. 57-203684). ), A front view, a plan view, a side view, and a back view, and FIG. 10 is a sectional view taken along the line AA of FIG. 7.

In each of these drawings, 1 is a landing door, 2 is a hanger case fixed to the landing, 3 is a hanger plate for hanging the landing door 1, 4 is a mounting metal fixed to the hanger case 2, 5
Is a fixed contact assembly provided on the mounting metal 4, 6 is a short-circuit contact that contacts the contacts 5a and 5b of the fixed contact assembly 5 to short-circuit both contacts, and 7 is an insulating material as shown in detail in FIG. A contact blade 8 made of a body and having the same width B and connected to the short-circuit contact 6 at its tip end is fixed to the hanger plate 3 side, and is engaged with a latch 9 to lock the landing door 1. Then, a combined body of the short-circuit contact 6 and the contact blade 7 is attached to the tip portion.

Reference numeral 10 is an attachment metal fixed to the hanger plate 3, and a pin 11 for pivotally supporting the latch 8 is attached. 12 is a roller attached to the hanger plate 3, 13 is a rail attached to the hanger case 2, 14a and 14b are drive rollers, 1
Reference numeral 5 denotes a compression coil spring attached to the hanger plate 3, which biases the latch 8.

Next, the operation of the conventional elevator hall door closing detection device having the above-described configuration will be described. When the car door (not shown) is driven in the closing direction in the order of closing the entrances and exits of the elevator, the car door and the hall door 1 are the vane provided on the car door and the drive provided on the hall door 1. Since it is connected by the rollers 14a and 14b, the hall door 1 moves following the driven car door to close the hall. When the hall door 1 is fully closed, the engagement with the car door is released, and the latch 8 shown in FIG. 7 is rotated counterclockwise about the pin 11 by the urging force of the compression coil spring 15 to engage with the latch 9. At the same time, the landing door 1 is locked.

Simultaneously with this locking operation, the short-circuit contact 6 provided at the tip of the latch 8 contacts the contacts 5a and 5b to close the contacts 5a and 5b, and a current flows through the detection element 16 shown in FIG. And transmits a signal indicating that the landing door 1 is closed and locked to the control circuit.

[Problems to be Solved by the Invention] In the conventional elevator hall door closing detection device as described above, for example, as shown in FIG. 12 (corresponding to FIG. 8), the short-circuit contact 6 and the contact blade 7 are coupled. Body latch 8
If it is bent or attached due to vibration or the like after attachment, the short-circuit contact 6 comes into contact with the attachment metal 4 at the position indicated by point C in the figure, and
The detection signal current in the figure may flow directly to the ground side, and the closing / locking signal of the hall door 1 may not be correctly transmitted to the control circuit.

Further, when the hall door 1 is tilted and operated due to the impact such as the impact as shown in FIG. 13 (corresponding to FIG. 10), if the short-circuit contact 6 comes into contact with the mounting metal 4 at the position indicated by point D in the figure. ,
The same result as the above case will be brought about.

Such a problem is that the amplitude of the contact blade 7 in the direction orthogonal to the longitudinal direction is set to be longer than that of the short-circuit contact 6, and the side edge portion of the contact blade 7 is projected outward from the short-circuit contact 6. However, if the lateral width of the contact blade 7 is simply increased, the following new problem will occur.

Since the lateral width of the contact blade 7 is expanded over the entire area of the joint with the short-circuit contact 6, the gap between the contact blade 7 and peripheral equipment such as the mounting metal 4 is reduced, and not only the installation accuracy is required but also the impact such as impact is reduced. When the hall door 1 is tilted due to the influence, contact between the contact blade 7 and the mounting metal 4 is likely to occur.

When the contact blade 7 comes into contact with the mounting metal 4, a moment about the pin 11 is applied to the contact blade 7 due to frictional force, but this moment cannot be reduced.

When contact between the contact blade 7 and the mounting metal 4 occurs, this contact occurs at the tip corner of the contact blade 7. For this reason, not only the contact blade 7 and the mounting metal 4 are damaged at the time of contact, but also they are easily caught, and in the worst case, locking is impossible.

It is a first object of the present invention that even if a combination of a short-circuit contact and a contact blade is bent and attached to a latch, or a landing door is tilted and operated, the short-circuit contact and the mounting metal can be provided. The object is to enable the door closing / locking signal to be accurately transmitted to the control circuit when the hall door is closed without contact.

A second object of the present invention is to make it possible to suppress the moment about the pin applied to the contact blade due to the frictional force to be small even when the contact blade and the mounting metal come into contact with each other. .

In addition, a third object of the present invention, a second object of the present invention,
Even if the contact blade and the mounting metal come into contact with each other, the contact blade and the mounting metal do not damage each other and are not caught, so that the locking can be reliably performed.

[Means for Solving the Problems] The elevator hall door closing detection device according to the first aspect of the present invention has the following configuration. That is, a latch installed at the top of the elevator landing door to lock by engaging a latch provided at the opposite position when the landing door is closed, a contact blade made of an insulator provided at the tip of the latch, and a contact. In an elevator landing door closure detection device that is set to a size that fits within the area of the tip of the blade, and is equipped with a short-circuit contact that is coupled to the tip of the contact blade and closes the closure detection circuit when the landing door is closed. , The lateral width of the contact blade in the direction orthogonal to the longitudinal direction is set to be longer than the short-circuit contact, and the dimensional difference is made at least in the longitudinal end portion of the side edge on the side of the contact blade that is arranged in other equipment. A notch is provided within the range of.

According to a second aspect of the present invention, there is provided an elevator landing door closing detection device, wherein a contact blade made of an insulator having a short-circuit contact housed in an area of a tip portion and combined with the short-circuit contact is connected to the short-circuit contact. At least a peripheral portion of the portion on which the other device is arranged is provided with a protrusion made of an insulating material having a curved surface at the tip and protruding outward.

[Operation] In the invention of claim 1 of the present invention, the lateral width of the contact blade made of an insulator is set to be longer than that of the short-circuiting contact, and at the same time, at least the periphery of the contact blade is provided with another device. The longitudinal edge of the side edge is provided with a notch within the range of the dimensional difference, so that the combination of the short-circuit contact and the contact blade is bent and attached to the latch, or the landing door is tilted to operate. In any case, the contact between the short-circuit contact and the adjacent member is prevented, and the door closing / locking signal can be accurately transmitted to the control circuit when the hall door is closed. Furthermore, even if the contact blade comes into contact with an adjacent member, the contact occurs at a position where the contact blade is cut away from the tip of the contact blade and recedes, that is, a position where the distance from the fulcrum is shortened.
The frictional force can reduce the moment about the fulcrum applied to the contact blade.

Further, in the invention of claim 2 of the present invention, at least the periphery of the contact blade of the contact blade, which is made of an insulator in which the short-circuit contact is accommodated in the area of the tip portion and which is combined with the short-circuit contact, is at least peripheral. On the side where the equipment is located, since a protrusion made of an insulating material that has a curved surface at the tip and protrudes outward is provided, even if the contact blade contacts the adjacent member, It does not hurt each other, slides smoothly, and can be locked securely.

[Examples] Hereinafter, the present invention will be described with reference to illustrated examples.

1 and 2 are a plan view and a vertical cross-sectional view showing the configuration of the main part of a closing detection device for an elevator hall door according to an embodiment of the present invention, and FIG. 1 is shown in FIG. 8 of a conventional example. Correspondingly, FIG. 2 also corresponds to FIG. 3 (a), (b), (c), and (d) are front views, plan views, and side views showing the details of the combined body of the short-circuit contact and the contact blade in FIGS. 1 and 2. , And a back view. In FIGS. 1 and 2, the same reference numerals as the corresponding parts in FIGS. 8 and 10 are the same or corresponding parts, and the description of these configurations will be omitted.

As is clear from each of these drawings, the width between both side surfaces 7a and 7b at the connecting portion of the contact blade 7 formed of an insulator with the short-circuit contact 6, in other words, in the direction orthogonal to the longitudinal direction of the contact blade 7. The width B is set to be longer than the width (B-2d) between both end surfaces 6a and 6b of the short-circuit contact 6 connected thereto, and the width difference 2d is distributed to the left and right (both ends in the width direction). The short-circuit contact 6 and the contact blade 7 are connected. Further, the contact blade 7 is notched at the longitudinal end portions of its both side edges within the range of the width difference d at each of these both side edges (the range is set to d in this embodiment), and these notches 7d, 7b are formed. Is set so that the distance from the tip of each side edge to the pin 11, which is its fulcrum, becomes short.

In the elevator landing door closing detection device of the present embodiment having the above-described configuration, the combination of the short-circuit contact 6 and the contact blade 7 is bent and attached to the latch 8 as shown in FIG. 4 (corresponding to FIG. 12). Even if it is attached, one of the notches 7d of the contact blade 7 made of an insulator is attached to the mounting metal 4.
There is no possibility that the rear end, in other words, the side edge tip on the side of the mounting metal 4 contacts, and the short-circuit contact 6 and the mounting metal 4 contact. Also,
As shown in FIG. 5 (corresponding to FIG. 13), even if the landing door 1 may be tilted and operated due to the impact or the like, the contact between the short-circuit contact 6 and the adjacent mounting metal 4 may be broken. Lack
Blocked by the rear edge of 7d. Therefore, when the hall door 1 is locked, the current of the detection circuit shown in FIG. 11 does not leak to the mounting metal 4 and the like, and an accurate detection signal can be transmitted to the control circuit.

Further, even when the contact blade 7 comes into contact with the mounting metal 4 as described above, the contact is notched from the tip of the contact blade 7 and retracted (the rear end of the notch 7d), that is, from the pin 11 which is a fulcrum. Since this occurs at the position where the distance is shortened, the moment about the pin 11 applied to the contact blade 7 due to the frictional force can be suppressed to a small amount by the amount of the shortened distance.

6 (a), (b), (c), and (d) show a combination of a short-circuit contact and a contact blade, which is a main part of an elevator hall door closing detection device according to another embodiment of the present invention. It is a front view, a plan view, a side view, and a back view showing details, and the same portions as those in FIG. 9 of the above-mentioned conventional example are denoted by the same reference numerals.

In the elevator landing door closing detection device of this embodiment, the lateral width of the contact blade 7 in the direction orthogonal to the longitudinal direction and the width between both end faces of the short-circuit contact 6 are set to the same width as in the conventional case, and the contact blade is also set. It is characterized in that projections 7c, 7c made of an insulating material and having a curved surface at the tip are provided on both sides of the connecting portion of the short-circuit contact 6 of FIG.

In the elevator hall door closing detection device of this embodiment, when interference occurs between the contact blade 7 side and the mounting metal 4, one protrusion 7c contacts the mounting metal 4 and the contact blade 7 (or the short-circuit contact 6). To prevent direct contact with the mounting metal 4. Since the projection 7c has a gentle curved surface at its tip, it does not damage each other even if it comes into contact with the mounting metal 4, and slides smoothly on the mounting metal surface to ensure locking.

In each of the above-described embodiments, the cutouts 7d or the projections 7c are provided on both sides of the contact blade 7, but other members that may cause interference are arranged only on one side of the contact blade 7. If so,
The notch 7d or the protrusion 7c may be provided only on one side of the other member side.

As described above, according to the invention of claim 1 of the present invention,
The width of the contact blade made of an insulator is set to be longer than the short-circuit contact, and at least the lengthwise tip of the side edge of the contact blade on the side where other equipment is arranged is within the range of dimensional difference. Since I made a notch,
Even if the combination of the short-circuit contact and the contact blade is bent and attached to the latch, or the landing door tilts and operates, the contact between the short-circuiting contact and the adjacent member is prevented and the landing door The door closing / locking signal can be accurately transmitted to the control circuit when the door is closed. Furthermore,
Even if the contact blade comes into contact with an adjacent member, the contact occurs at a position where the contact blade is cut away from the tip of the contact blade and recedes, that is, a position where the distance from the fulcrum is shortened. The central moment can be kept small.

Further, according to the invention of claim 2 of the present invention, at least the periphery of the contact blade of the contact blade, which is made of an insulator in which the short-circuit contact is accommodated in the area of the tip portion and the short-circuit contact is coupled, is provided at least in the periphery thereof. On the side where the other device is located, a protrusion made of an insulator that has a curved surface at the tip and protrudes outward is provided, so even if the contact blade contacts the adjacent member, It does not hurt each other and slides smoothly and can be locked securely.

[Brief description of drawings]

FIG. 1 and FIG. 2 are a plan view and a vertical sectional view showing a configuration of a main part of a closing detection device for an elevator hall door according to an embodiment of the present invention, and FIGS. 3 (a) to 3 (d) show the present embodiment. A front view, a plan view, a side view, and a back view showing details of a combined body of a short-circuit contact and a contact blade according to an example, FIGS. 4 and 5 are explanatory views of the operation of the embodiment, and FIG. 6 (a). (D) is a front view, a plan view, a side view, and a rear view showing details of a combination of a short-circuit contact and a contact blade according to another embodiment of the present invention, and FIG. 7 shows a conventional elevator landing door. FIG. 8 is a front view showing an example of the overall configuration of the closure detecting device, FIG. 8 is a plan view of a main part of FIG. 7, and FIGS. 9 (a) to 9 (d) are combined bodies of the short-circuit contacts and the contact blades of FIG. Front view showing the details of
A plan view, a side view, a rear view, and FIG. 10 are AA of FIG.
FIG. 11 is a sectional view taken in the direction of the arrow, FIG. 11 is a circuit diagram of a closing / locking signal detection circuit for a landing door, and FIGS. In the figure, 1 is a landing door, 5a and 5b are contacts, 6 is a short-circuit contact, 7 is a contact blade, 7c is a protrusion, 7d is a notch,
8 is a latch and 9 is a latch. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] 1. A latch which is installed on an elevator landing door and locks by engaging with a latch provided at an opposing position when the landing door is closed, and an insulator provided at a tip portion of the latch. A contact blade; and a short-circuit contact that is set to a size that fits within the area of the tip of the contact blade and that is coupled to the tip of the contact blade to close the closing detection circuit when the landing door is closed. In the elevator landing door closing detection device, while setting the lateral width of the contact blade in the direction orthogonal to the longitudinal direction to be longer than the short-circuit contact, on the side where other equipment is arranged at least around the contact blade. A closing detection device for an elevator landing door, characterized in that a notch is provided in the longitudinal end portion of the side edge within the range of the dimensional difference. 2. A latch installed on the upper part of an elevator landing door to lock by locking a latch provided at an opposite position when the landing door is closed, and an insulator provided at the tip of this latch. A contact blade; and a short-circuit contact that is set to a size that fits within the area of the tip of the contact blade and that is coupled to the tip of the contact blade to close the closing detection circuit when the landing door is closed. In an elevator landing door closing detection device, at least a peripheral portion of a portion of the contact blade where the short-circuit contact is connected to a side of the contact blade where the other device is disposed, an insulating member having a curved surface at the tip and protruding outward. An elevator hall door closing detection device, characterized in that it is provided with a protrusion made of an object.