JP2014144838A - Landing door device - Google Patents

Abstract

An object of the present invention is to provide a landing door device provided with a door opening mechanism that enables prevention of failure due to sagging of a door opening rope and easy door opening.
In order to achieve the above object, a landing door device according to the present invention includes a landing door 2 that partitions the hoistway and the landing, a door lock device 4 that locks the landing door 2, and a door lock device 4 on the hoistway side. In the landing door device provided with the landing door opening mechanism for unlocking from the door, the landing door opening mechanism has one end connected to the door lock device 4 and the door opening routed to the front front end portion in the opening direction of the landing door 2 And a rope slack eliminating means 6a-6c provided at the other end of the rope 3 for releasing the door, and the other end of the rope 3 for opening the door is a landing door via the rope slack eliminating means 6a-6c. It is characterized by being fixed below the front end portion of the outer side of the opening direction.
[Selection] Figure 1

Description

  The present invention relates to a landing door device including a door opening mechanism that opens a landing door closed from the inside of a hoistway.

  Generally, the door opening mechanism of an elevator landing door is composed of a door opening rope made of a wire rope covered with vinyl or the like, one end is fixed to the door lock device and the other end is fixed to the inner lower part of the landing door. It has a structure. For this reason, if the rope for opening the door is too stretched, the door lock device may be unlocked unintentionally in the event that the rope comes into contact with something. On the other hand, even if the door opening rope is too slack, there is a high possibility that the slacking door opening rope will be caught by surrounding objects, which will cause a problem. For this reason, the door opening rope is required to have an appropriate amount of slack that does not unlock the door lock and does not get caught by surrounding objects as long as it touches something. There was a control value for the amount of slack, and it was necessary to periodically check the amount of slack for the door opening rope on site.

Conventionally, a technique shown in FIG. 5 has been known as a technique applied to such a door opening mechanism. In this technology, a door suspension roller 11 a that is rotatably attached to a door suspension plate 11 fixed to the upper end of the landing door 2 and rolls on the upper surface of the door rail 12, and a gap of a predetermined dimension is provided on the lower surface of the door rail 12. The landing door 2 is guided so as to be opened in the longitudinal direction of the door rail 12, and when the landing door 2 reaches the door position 15, the landing door is provided. The rope support portion 13a is attached at a position where it does not interfere with 2 and one end of the rope support portion 13a is attached in the vicinity of the open end of the upper part of the landing door 2, and the other end side is wound around the rope support portion 13a and then hangs downward. And a door opening rope 13 provided with a spring 13b which is provided and holds a tension so as not to loosen at the end. When opening the landing door 2 from the inside of the hoistway, after pulling the inner opening rope 14 to unlock the door lock, the door opening rope 13 is pulled downward to reach the door position 15 at the time of opening. 2 can be opened (see, for example, Patent Document 1).

JP 2000-289956 A (paragraph number 0007, FIG. 1)

  However, although the door opening mechanism of the prior art enables the door to open smoothly, the structure of the internal opening rope 14 is not changed and an appropriate amount of slack is required. The problem of the occurrence of failure due to the slack of the opening rope could not be solved, and it was necessary to periodically check the amount of slack of the door opening rope on site. When opening the door, it is necessary to pull the door unlocking rope while pulling the door unlocking rope while being on the ladder, and pull the door opening rope to open the door, which takes time and effort. It was.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a landing door device including a door opening mechanism that enables prevention of failure due to slack of a door opening rope and easy door opening. And

  In order to achieve the above object, a landing door device according to the present invention includes a landing door that partitions a hoistway and a landing, a door lock device that locks the landing door, and an unlocking device for the door lock device from the hoistway side. In the landing door device provided with a landing door opening mechanism, the landing door opening mechanism is connected to the door lock device at one end, and the door opening rope routed to the front outer end in the opening direction of the landing door, Rope slack eliminating means provided at the other end of the door opening rope, and the other end of the door opening rope is fixed below the outer front end of the landing door through the rope slack eliminating means. It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, the landing door apparatus provided with the door opening mechanism which enables prevention of the failure by the slack of the rope for door opening, and easy door opening can be provided.

It is a front view which shows the structure of the landing door apparatus provided with the elastic body in the lower end part of the rope for door opening concerning one Embodiment of this invention. It is a front view which shows the structure of the landing door apparatus provided with the rope winding device in the lower end part of the rope for door opening concerning one Embodiment of this invention. It is a front view which shows the landing door apparatus structure provided with the magnetic body as a weight in the lower end part of the rope for door opening concerning one Embodiment of this invention. It is the front view which showed other embodiment of the landing door apparatus shown in FIG. It is a front view which shows the landing door apparatus of a prior art.

  Hereinafter, the landing door device according to the present invention will be described with reference to the drawings.

<Example 1>
FIG. 1 is a front view showing a configuration of a landing door device provided with an elastic body 6a at a lower end portion of a door opening rope 3 according to an embodiment of the present invention. In this drawing, the landing door device is viewed from the pit 9 in the hoistway. As shown in the figure, the landing door device in the present embodiment includes a door suspension roller that is rotatably attached to a door suspension plate fixed to the upper end of the landing door 2 and rolls on the upper surface of the door rail, It is the same as that of the prior art in that it includes a steady-state roller disposed on the lower surface with a gap of a predetermined dimension and opens in the longitudinal direction of the door rail. Hereinafter, differences from the prior art will be described.

  As shown in FIG. 1, the landing door device according to the present embodiment unlocks the landing door 2 that partitions the hoistway and the landing, the door lock device 4 that locks the landing door 2, and the door lock device 4 from the hoistway side. And a landing door opening mechanism L. The landing door opening mechanism 1 includes a door opening rope 3 made of a wire covered with vinyl or the like, and an elastic body 6a such as rubber or a spring as rope slack eliminating means. The direction of arrow A of the landing door 2 is the opening direction, and one end of the rope 3 for opening the door is connected to a door loshing device 4 at the top of the landing door 2, and after passing through the top of the landing door 2, the front end of the landing door 2 in the opening direction It is routed through the hole provided in the surface to the front front end portion in the opening direction of the landing door 4 and hangs down along the front front end portion in the opening direction of the landing door 4, and the other end of the door opening rope 3 is one end of the elastic body 6a And the other end of the elastic body 6a is fixed below the front end of the landing door in the opening direction. The elastic body 6a holds the door opening rope 3 with an appropriate tension in a state where one end is connected to the other end of the door opening rope 3 and the other end is fixed below the front end of the landing door in the opening direction. The elastic force is adjusted as follows.

  In addition, a tubular rope cover 5 is provided at a portion where the door opening rope 3 is disposed along the outer front end portion of the landing door 2 in the opening direction, and the door opening rope 3 is stored in the rope cover 5. . In this embodiment, the lobe cover 5 is divided into two upper and lower parts, and a handle 7 for pulling the door opening rope 3 is attached to the door opening rope 3 at an intermediate part thereof. Accordingly, the rope cover 5 is provided so as to avoid the handle 7.

  The landing door device according to the present embodiment configured as described above is arranged in such a manner that the door opening rope 3 is connected to the door lock device 4 and is routed around the outer front end of the landing door 2 in the opening direction. When an operator opens the landing door 2 from the pit 9 and enters the landing, the door lock device 4 is unlocked by pulling the handle 7 in the horizontal direction and the door opening direction with the ladder 8 up from the pit 9. Since the pulling force can act as a force for opening the landing door 2, the door can be easily opened.

  Further, when the door is opened, the slack of the door opening rope 3 necessary for the opening operation can be made smoothly by the elastic body 6a provided at the lower end of the door opening rope 3 because of the elastic force of the elastic body 6a. When the elevator is in normal operation other than when the door is open, slack can be absorbed by the elastic force of the elastic body 6a and the slack of the door opening rope 3 can be eliminated. The possibility that the rope 3 is caught on the surrounding objects can be kept low, and the occurrence of defects can be suppressed. Further, as long as the door opening rope 3 comes into contact with something, it is possible to prevent the door dock device 4 from being unlocked by absorbing the force by the elastic force of the elastic body 6a.

  Furthermore, since the door opening rope 3 is housed in the rope cover 5, it is possible to prevent a failure due to slack in the door opening rope 3. In the water embodiment, the handle 7 is arranged on the door opening rope 3 and the other part is covered with the rope cover 5, and the rope cover 5 is provided so as to avoid the handle. 3 is naturally pulled toward the door opening direction, and the unlocking operation and the door opening operation of the door lock device 4 can be naturally performed simultaneously. Further, in this embodiment, the handle 7 is arranged in the middle part of the door opening lobe 3 and the other part is covered with the rope cover 5 so that the rope is pulled too high or too low when the door is opened. If the door is tilted, the door may not open properly, but the height at which the rope is pulled can be limited, and the door can be tilted when the door is opened by setting the pulling height as the middle part of the door. And can be opened smoothly. The elastic body 6a used in the present embodiment includes, for example, rubber and a spring, but it is preferable to select a material whose deterioration progresses slowly.

<Example 2>
FIG. 2 is a front view showing a configuration of a landing door device including a rope winding device at a lower end portion of a door opening rope according to an embodiment of the present invention. In the water embodiment, the difference from Example 1 is that the rope winding device 6b is provided at the other end of the door opening rope 3 instead of the elastic body 6a as the rope slack eliminating means, and the rope winding device 6b is opened to the landing door 2. It is fixing to the direction outer front end lower part.

  The landing door device in the water embodiment configured as described above can achieve the same effects as described in the first embodiment, and in addition to the elastic body 6a, only the necessary amount can be obtained. Pull out the door opening rope 3 to hold the slack without absorbing the slack as it is, or when the slack is no longer necessary, operate the rope winding device 6b to return to the slack free state again. The length of the door opening rope 3 can be adjusted easily, and the landing door opening operation can be made easier.

<Example 3>
FIG. 3: is a front view which shows the structure of the landing door apparatus provided with the magnetic body as a weight at the edge part below the rope for door opening concerning one Embodiment of this invention. In the water embodiment, the difference from Example 1 is that a magnetic body 6c made of a magnet, a magnetized magnetic body, or the like is connected to the other end of the door opening rope 3 instead of the elastic body 6a. The magnetic body 6c functions as a weight and is attracted to the lower side of the front end of the landing door 2 in the opening direction by the magnetic force.

  That is, since the magnetic body 6c functions as a weight, the other end of the door opening rope 3 is pulled downward so as to eliminate slack due to its weight. And since the magnetic body 6c has magnetic force in itself, it adsorb | sucks to the landing door 2 comprised with magnetic bodies, such as iron. For this reason, when the door opening rope 3 is slackened, it moves to slide downward along the outer front end surface of the landing door 2 by its own weight while adsorbing to the landing door 2 to open the door. Absorbs the excess slack from the “use 3”. At this time, the magnetic force of the magnetic body 6c is adjusted and the frictional force with the landing door 2 is adjusted so that the pulling force of the door opening rope 3 due to its own weight does not become so strong that the door lock device 4 is unlocked. It is good to keep.

  In the water embodiment configured as described above, when the maintenance person opens the landing door 2 from the pit 9 and enters the landing, the handle 7 is pulled in the horizontal direction and the door opening direction with the ladder 8 raised from the pit 9. Thus, the door lock device 4 can be unlocked and the door can be opened, and the door can be easily opened. Further, the slack of the door opening rope 3 that is required when the door is opened is not fixed to the landing door 2 with a magnetic body 6c at the lower end of the door opening rope 3. Since the magnetic body 6c can be moved while adsorbed to the landing door 2 by being attracted and fixed by magnetic force, the door opening rope 3 can be slack when the landing door 2 is opened, so that the door 3 can be made smooth. Door can be opened. On the other hand, during the normal operation of the elevator other than when the door is opened, the magnetic body 6c is arranged as a weight, so that the magnetic body 6c is hung and the magnetic force is generated inside the rope cover 5 outside the opening side of the landing door 2. The door opening rope 3 is adsorbed by the landing door 2 and can be slid downward to eliminate the slack of the door opening rope 3. Further, each time the door opening rope 3 is stored in the rope cover 5, Failures due to sagging can be prevented. Thus, also in this embodiment, the same effect as Example 1 can be produced.

<Example 4>
FIG. 4 is a front view showing another embodiment of the landing door device shown in the figure. The present embodiment is different from the third embodiment in that a rope turning pulley 10 is provided when the door opening rope 3 is routed.

  Thus, when the door opening rope 3 is routed, the operability of the door opening rope 3 can be improved by providing the rope turning pulley 10. Further, the rope turning pulley 10a is arranged such that the door opening rope 3 is routed in an angle range of about 30 degrees forward and backward with respect to the position where the door opening rope 3 is suspended from the portion connected to the door lock device 4. If the door opening rope 3 is provided, the unlocking operation of the door lock device 4 is easily performed smoothly.

  Further, if the rope turning pulleys 10c and 10d are arranged above and below the handle 7, when the handle 7 is pulled in the horizontal direction and in the door opening direction, the pulling force is performed while performing the unlocking operation of the door lock device 4. Can be efficiently used as a force for opening the landing door 2.

  In addition, in this embodiment, although the example which applied the rope turning pulley 10 with respect to Example 3 was given and demonstrated, even if it is Example 1 or Example 2, it can apply the rope turning pulley 10 similarly. The same effect as described above can be obtained.

  As described above, according to the first to fourth embodiments, except for when the landing door 2 is opened, the slack of the rope 3 for opening the landing door 2 is eliminated, and the door is opened except for a place where it is pulled when the landing door 2 is opened. By covering the rope 3 with the D-cover 5, the door opening rope 3 is prevented from being damaged by the surrounding objects, and the door opening rope 3 is brought out of the opening side plate of the landing door 2, and the landing door 2 By pulling the door opening rope 3 in the horizontal direction and the door opening direction A in order to unlock the door lock device 4 when opened, the pulling portion of the door opening rope 3 is pulled in the horizontal direction and the door opening direction A. The door can be opened at the same time as unlocking the door.

  Thus, it is possible to provide a landing door device that can prevent the occurrence of problems due to the slack of the door opening rope 3 and can easily open the door.

  In the first to fourth embodiments, an example has been described in which the rope cover 5 is used to improve the reliability of failure prevention due to the door opening rope 3 being caught on the periphery. If it is a structure provided with the rope cover 5 certainly, the certainty of failure prevention can be improved.

  However, in the present invention, even if the rope cover 5 is not provided, the door opening rope 3 is arranged along the front end of the landing door 2 in the opening direction by the slack eliminating means so that the door opening rope 3 is not slack. Therefore, even if the rope cover 5 is not necessarily provided, it is possible to exhibit a failure prevention effect due to the door opening rope 3 being caught on the peripheral objects.

1 landing door opening mechanism 2 landing door 3 door opening rope 4 door lock device 5 rope cover 6a elastic body 6b rope winding device 6c magnetic body 7 handle 8 ladder 9 pit 10 rope turning pulley 11 door suspension plate 11a door suspension cola 11b Stabilizing roller 12 Door rail 13 Door opening rope 13a Rope support 13b Spring 14 Internal opening rope 15 Door position when opening

Claims (6)

In a landing door device comprising a landing door that partitions the hoistway and the landing, a door lock device that locks the landing door, and a landing door opening mechanism for unlocking the door lock device from the hoistway side,
The landing door opening mechanism is
A door opening rope connected at one end to the door locking device and routed to the front end of the landing door in the opening direction;
Rope slack eliminating means provided at the other end of the door opening rope;
With
The other end of the door opening rope is fixed below the outer front end of the landing door in the opening direction through the rope slack eliminating means.   2. The landing door apparatus according to claim 1, wherein a cylindrical rope cover is provided at an outer front end portion of the landing door in the opening direction, and the door opening rope is housed in the rope cover. .   3. The landing door device according to claim 1, wherein a handle is provided on the door opening rope, and the rope cover is provided to avoid the handle.   The landing door device according to any one of claims 1 to 3, wherein the rope slack eliminating means includes an elastic body having the other end of the door opening rope connected to one end, and the other end of the elastic body is connected to the other end. A landing door device characterized by being fixed below an outer front end portion in the opening direction of the landing door.   The landing door device according to any one of claims 1 to 3, wherein the rope slack eliminating means includes a rope winding device provided at the other end of the door opening rope, and the rope winding device is connected to the landing door. A landing door device characterized by being fixed below the front end of the door in the opening direction.   The landing door device according to any one of claims 1 to 3, wherein the rope slack eliminating means includes a magnetic body to which the other end of the door opening rope is connected, and the magnetic body functions as a weight, A landing door device, wherein the landing door device is attracted to the lower front end portion of the landing door in the opening direction by a magnetic force.

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