JP2007191249A - Elevator landing door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator landing door device capable of preventing generation of any whistle nozzle when opening/closing a landing door. <P>SOLUTION: The elevator landing door device comprises a pair of double swinging landing doors 1, 2 movable at the closing position and the opening position, a pair of contact parts 10a, 11a which are mounted in the vicinity of a door stop face 9 side of the landing doors 1, 2 in an extending manner in the predetermined direction, and brought into contact with each other, and a part in which a projecting part 13 is formed on a surface of one contact part 10a, a recessed part 14 is formed on a surface of the other contact part, and the projecting part 13 and the recessed part 14 have surfaces not parallel to door front faces 7 of the landing doors 1, 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an elevator landing door device, and more particularly to an elevator landing door device including a pair of double-opening type landing doors each having a door stop device at an opposing portion.

  For example, as described in Patent Documents 1 and 2 below, the door contact surface side of a landing door provided in an elevator landing on each floor in a building is formed of an elastic body such as rubber or synthetic resin. A door-to-door device is provided.

These door stop devices function as cushioning materials that reduce impact and impact noise when closing landing doors, and function to prevent smoke from spreading to each floor through the elevator hoistway in the event of a fire have. In order to prevent smoke from spreading to each floor through the elevator hoistway in the event of a fire, it is necessary for the door stop device to be in close contact when the landing door is closed. For this reason, as a mounting structure in which the position of the door stop device can be adjusted, an appropriate contact state is obtained by finely adjusting the mounting position of the door stopper device.
Japanese Patent No. 2693622 Japanese Patent No. 2563023

  However, in the elevator landing door apparatus provided with the door stop device described above, the following points are not considered.

  By increasing the adhesion of the door stop device, the door stop device is opposed to the minute gap when the landing door is closed and opened.

  In high-rise buildings, especially in winter when the temperature difference between indoor and outdoor is large, the air pressure in the elevator hoistway decreases, and the air pressure difference between the elevator hoistway and the elevator platform tends to increase.

  For this reason, when the pressure difference between the elevator hoistway and the elevator hall is large, when the door stop device of the landing door is in a state of facing with a minute gap, an air flow from the elevator hall to the elevator hoistway is generated, Due to this air flow, there is a problem that a whistling sound that is annoying for elevator users occurs.

  A mechanism for generating the whistling sound will be described with reference to FIG. The elevator landing door device shown in FIG. 11 includes, for example, the door stop device described in Patent Document 1.

  The elevator landing door device includes a pair of double-opening type landing doors 101 and 102 that are slidable between a closed position and an open position, and an elevator car that moves up and down in the elevator hoistway 103 at the landing doors 101 and 102 (not shown). And door stop devices 105 and 106 attached to the car facing surface 104 facing each other. The door stop devices 105 and 106 extend over the entire length of the landing doors 101 and 102 in the vertical direction.

  The door stop device 105 is formed by integrally molding a contact portion 105a made of a soft rubber material and a support portion 105b made of a hard rubber material. The door stop device 105 is attached to the car facing surface 104 of the landing door 101 by screwing the support portion 105b. The contact portion 105 a is formed with a line-like convex portion 107 that extends in the vertical direction when the door stop device 105 is attached to the landing door 101.

  The door stop device 106 is formed by integrally molding a contact portion 106a made of a soft rubber material and a support portion 106b made of a hard rubber material. The door stop device 106 is attached to the car facing surface 104 of the landing door 102 by screwing the support portion 106b. The contact portion 106a is formed with a streak-like recess 108 that extends in the vertical direction when the door stop device 106 is attached to the landing door 102.

  When the landing doors 101 and 102 slide to the closed position, the contact portions 105a and 106a of the door stop devices 105 and 106 come into contact with each other, and the convex portion 107 and the concave portion 108 are engaged. The convex portion 107 and the concave portion 108 are formed in a rectangular cross-sectional shape.

  During the closing operation and the opening operation of the landing doors 101 and 102, the door stop devices 105 and 106 face each other at a minute interval as shown in FIG. In this case, an air flow path 109 through which air flows is formed between the contact portions 105a and 106b, and the air flow path 109 has a plurality of bent portions that are bent at substantially right angles.

  When air flows in the air channel 109 having a bent portion bent at a substantially right angle as indicated by an arrow, an air flow is generated from the peripheral surface of the air channel 109 at the bent portion bent at a substantially right angle in the air channel 109. Exfoliates and a vortex is generated. This vortex is thought to generate whistling sound in the process of generation → expansion → extinction.

  Moreover, in patent document 2, generation | occurrence | production of a whistle blowing sound is prevented by providing a cover board and the sealing tool attached to the cover board in addition to the door stop apparatus.

  However, as described in Patent Document 2, in an elevator landing door device using a guard plate, it is necessary to secure a space for providing a guard plate between the landing door and the elevator car. It is difficult to meet the demand to reduce the gap between the car and the elevator car threshold.

  The present invention has been made to solve such problems, and an object of the present invention is to provide an elevator landing door device that can prevent the generation of whistling noises when the landing door is opened and closed.

  A first feature according to an embodiment of the present invention is that, in an elevator landing door device, a pair of double-opening type landing doors movable to a closed position and an open position, and in the vicinity of a door contact surface side of the landing door A pair of contact portions that are attached so as to extend in a predetermined direction and that can contact each other, a convex portion is formed on the surface of one of the contact portions, and a concave portion is formed on the surface of the other contact portion And the convex part and the concave part have a non-parallel surface with respect to the front face of the landing door.

  According to the present invention, even when the landing door is opened and closed, even when the contact portion attached to one elevator door and the contact portion attached to the other landing door face each other at a minute interval. In addition, vortices are not generated in the air flow passing between the contact portions, and the generation of whistling noise can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the elevator landing door device according to the first embodiment of the present invention includes a pair of double-opening type landing doors 1 and 2 slidably movable between a closed position and an open position. . The landing doors 1 and 2 are provided for each floor, and divide the elevator hoistway 4 where the elevator car 3 moves up and down and the elevator landing 5 on each floor. When the elevator car 3 that moves up and down stops at a certain floor and the car door 6 provided in the elevator car 3 opens and closes, the landing doors 1 and 2 on the floor where the elevator car 3 stops are car doors. 6 is opened and closed in synchronization with the opening and closing of 6.

  As shown in FIG. 2, the landing doors 1 and 2 have a door front surface 7 that faces the elevator landing 5, and a car facing surface 8 that is parallel to the door front surface 7 and faces the elevator car 3, A door contact surface 9 is provided between the door front surface 7 and the car facing surface 8.

  Door contact devices 10 and 11 are attached to the car facing surfaces 8 of the landing doors 1 and 2 so as to be located on the door contact surface 9 side. The door stop devices 10 and 11 are extended over the entire length of the landing doors 1 and 2 in the vertical direction.

  The door stop device 10 is formed of a soft rubber material, has elasticity, and integrally forms a contact portion 10a extending in a vertical direction, which is a predetermined direction, and a support portion 10b formed of a hard rubber material. Is formed. The door stop device 10 is attached to the car facing surface 8 of the landing door 1 by screwing the support portion 10b with a screw (not shown). Furthermore, the door stop apparatus 10 is attached so that position adjustment is possible along the opening / closing direction (direction orthogonal to the door stop surface 9) of the landing door 1. As a configuration enabling this position adjustment, for example, a long slot is formed in the support portion 10b in the opening / closing direction of the landing door 1, and a screw fixing the support portion 10b is inserted into the slot and tightened. Can be used. A hollow portion 12 is formed inside the contact portion 10a, and a line-like convex portion 13 extending in the vertical direction over the entire length of the door stop device 10 is formed on the surface.

  The door stop device 11 is formed of a soft rubber material, has elasticity, and integrally forms a contact portion 11a extending in a vertical direction, which is a predetermined direction, and a support portion 11b formed of a hard rubber material. Is formed. The door stop device 11 is attached to the car facing surface 8 of the landing door 2 by screwing the support portion 11b with a screw (not shown). Furthermore, the door stop device 11 is attached so that its position can be adjusted along the opening / closing direction of the landing door 2 (a direction orthogonal to the door stop surface 9). As a configuration that enables this position adjustment, for example, a long slot is formed in the support portion 11b in the opening / closing direction of the landing door 2, and a screw that screws the support portion 11b is inserted into the slot and tightened. Can be used. The contact portion 11a has a hollow portion 12 formed therein, a surface-like concave portion that extends in the vertical direction over the entire length of the door stop device 11 on the surface and that can be engaged with the line-like convex portion 13. 14 is formed.

  The convex portion 13 has two inclined surfaces 13 a and 13 b that are inclined at approximately 45 ° with respect to the door front surface 7, and a tip surface 13 c that is parallel to the door contact surface 9. Thereby, the convex part 13 has only a non-parallel surface with respect to the door front surface 7 when the door stop device 10 is attached to the landing door 1, and does not have a surface parallel to the door front surface 7. It is formed in a mold trapezoid shape. The tip surface 13c may be a convex curved surface. In that case, since the connection part of inclined surface 13a, 13b and the front end surface 13c can be made into a smooth continuous surface, it is suitable to make the front end surface 13c into a convex curved surface.

  The recess 14 has two inclined surfaces 14 a and 14 b inclined at approximately 45 ° with respect to the door front surface 7 and a tip surface 14 c parallel to the door contact surface 9. Thereby, the recessed part 14 has only a non-parallel surface with respect to the door front surface 7 when the door stop device 11 is attached to the landing door 2, and does not have a surface parallel to the door front surface 7. It is formed into a shape. The tip surface 14c may be a concave curved surface. In that case, since the connection part of inclined surface 14a, 14b and the front end surface 14c can be made into a smooth continuous surface, it is suitable to make the front end surface 14c into a concave curved surface.

  When the door stop devices 10 and 11 are attached to the landing doors 1 and 2, the contact portions 10 a and 11 a have corner portions 15 formed by the car facing surface 8 and the door contact surface 9 of the landing doors 1 and 2. A protruding piece 16 is formed to cover the surface. The projecting piece 16 is formed to be bent in a direction in which the tip end portion comes into contact with the door stop surface 9 when the door stop devices 10 and 11 are attached to the landing doors 1 and 2.

  Further, a contact portion end portion 17 protruding outward in an arc shape is formed at the end portion of the contact portion 10a, 11a on the elevator car 3 side which is one of the directions orthogonal to the sliding direction of the landing doors 1, 2. ing.

  In such a configuration, when the landing doors 1 and 2 are opened or closed, the contact portion 10a of the landing door 1 and the contact portion 11a of the landing door 2 face each other with a minute gap as shown in FIG. A condition occurs. In this case, an air flow path 18 through which air flows is formed between the contact portion 10a and the contact portion 11a.

  When the air flow path 18 as shown in FIG. 4 is formed between the contact portion 10a and the contact portion 11a, the elevator hoistway from the elevator landing 5 according to the atmospheric pressure difference between the elevator landing 5 and the elevator hoistway 4. The air flow (airflow) toward the inside 4 is generated in the air flow path 18.

  The air flow path 18 does not have a portion where the air flow is bent at a substantially right angle, and the air flow smoothly proceeds in the air flow path 18, and in the air flow path 18, from the peripheral surface of the air flow path 18. Airflow separation and vortex generation do not occur. For this reason, generation | occurrence | production of the whistling sound caused by peeling of airflow and generation | occurrence | production of a vortex is prevented.

  Even when the distal end surfaces 13c and 14c are curved surfaces, the flow of air flowing through the air flow path 18 becomes smooth, so that it is possible to effectively prevent the generation of whistling sounds.

  After passing through the air flow path 18, the air flow that has passed through the air flow path 18 spreads along the contact portion end portion 17 that protrudes outward in an arc shape. For this reason, it is possible to prevent the whistling sound from being generated due to separation or vortex generated immediately after the air flow passes through the air flow path 18.

  A corner 15 formed by the car facing surface 8 and the door contact surface 9 in the landing doors 1 and 2 is covered with a protruding piece 16. And the front-end | tip part of the protrusion piece 16 is curved and formed in the direction contact | abutted to the door stop surface 9. As shown in FIG. Therefore, when air flows between the door contact surface 9 of the landing door 1 and the door contact surface 9 of the landing door 2 toward the air flow path 18, the air is between the protruding piece 16 and the door contact surface 9. Intrusion is prevented. For this reason, generation | occurrence | production of the vortex caused by the flow of air entering between the protrusion piece 16 and the door stop surface 9 can be prevented, and the generation of the whistling sound caused by the generation of such vortex. Can be prevented.

  In addition, since the tip of the protruding piece 16 is formed to be curved so as to contact the door stop surface 9, even when the door stop devices 10 and 11 are adjusted in the sliding direction of the landing doors 1 and 2, The tip end portion of the projecting piece 16 can be maintained in contact with the door stop surface 9.

  Here, when the landing doors 1 and 2 (or 101 and 102) face each other with a minute gap, a measurement experiment of whistling noise (noise) generated by the flow of air passing through the gap was performed. The measurement results are shown in FIGS. In this measurement experiment, models such as elevator landing doors 1 and 2 (or 101 and 102) are arranged in a chamber with a blower, and the blower is driven to move the elevator landing doors 1 and 2 (or 101 and 102). This was done by generating a pressure difference before and after.

  FIG. 5 is a measurement result in the case of the elevator landing doors 1 and 2 using the door stoppers 10 and 11 according to the first embodiment of the present invention shown in FIG.

  FIG. 6 shows measurement results in the case of elevator landing doors 101 and 102 using the conventional door stop devices 105 and 106 shown in FIG.

  FIG. 7 shows the measurement results for the elevator landing doors 1A and 2A using the door stop devices 10A and 11A shown in FIG. The door stop devices 10A and 11A shown in FIG. 8 have the same structure as the door stop devices 10 and 11 in the structure of the convex portion 13 and the concave portion 14, but the shape of the protruding piece 16A covering the corner portion 15 is different from the protruding piece 16. . The tip of the protruding piece 16 </ b> A is not curved so as to abut against the door contact surface 9, and has a shape extending in parallel with the door contact surface 9. In the measurement experiment, the door stop devices 10A and 11A are fixed at a position where a minute gap (about 0.5 mm) is generated between the protruding piece 16A and the door contact surface 9.

  In the measurement experiment, the clearance on the door contact surface side of the elevator landing doors 1 and 2 (or 101, 102, or 1A, 2A) was set to about 1.5 mm. Further, the microphone “M” for measuring the whistling sound was arranged at a position indicated by a circle M in FIGS. 4, 11, and 8. Further, the air flow was generated by operating the blower and setting the pressure difference in the chamber sandwiching the landing doors 1 and 2 (or 101, 102, or 1A, 2A) to 100 hPa.

  In the graphs of the measurement results in FIGS. 5 to 7, the horizontal axis is the frequency of the whistling sound (noise), and the vertical axis is the magnitude of the whistling sound (noise).

  From the measurement results shown in FIG. 5, it was found that no whistling sound was generated. The measurement experiment was performed by changing the gap on the door-contacting surface side to various values with 1.5 mm in between. The measurement result was almost the same as the case of about 1.5 mm.

  According to the measurement results shown in FIG. 6, it has been found that whistling noise (noise) is generated at several frequencies between about 2000 Hz and 3000 to 4000 Hz.

  According to the measurement result shown in FIG. 7, it was found that whistling noise (noise) is generated at a frequency of about 3300 Hz, although not as much as the measurement result shown in FIG. From the measurement result of FIG. 7, the tip of the protruding piece 16 covering the corner 15 is brought into contact with the door contact surface 9 so that the air flow does not enter between the protruding piece 16 and the door contact surface 9. It can be seen that this contributes to prevention of whistling noise.

  According to the first embodiment, the door contact devices 10 and 11 having elastic contact portions 10a and 11a are attached to the landing doors 1 and 2 so that the contact portions 10a and 10a are closed when the landing doors 1 and 2 are closed. When 11a abuts, it is possible to reduce the impact and noise when closing. Further, in the state where the landing doors 1 and 2 are closed, the airtightness can be maintained by the engagement between the convex portion 13 and the concave portion 14, and the smoke that has risen in the elevator hoistway 4 at the time of the occurrence of a fire. Can be prevented from flowing into the elevator landing 5 on each floor through the gap between the landing doors 1 and 2.

  Furthermore, according to the first embodiment, there is no need to provide a cover plate as shown in Patent Document 2 in order to prevent the whistling noise, and the threshold of the elevator hall 5 and the threshold of the elevator car 3 The gap dimension between the two can be reduced.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the component demonstrated in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 9, the elevator landing door device according to the second embodiment includes a pair of double-opening type landing doors 21 and 22 that are slidable between a closed position and an open position. The landing doors 21 and 22 are provided for each floor, and partition the elevator hoistway 4 where the elevator car 3 (see FIG. 1) moves up and down and the elevator landing 5 on each floor.

  The landing doors 21 and 22 have a door front surface 7 that faces the elevator landing 5 and a car facing surface 8 that is parallel to the door front surface 7 and faces the elevator car 3. The door front surface 7 faces the car. A door stop surface 9 </ b> A is provided between the surface 8.

  Door stop devices 23 and 24 are attached to the landing doors 21 and 22. The door stop devices 23 and 24 extend over the entire length of the landing doors 21 and 22 in the vertical direction.

  The door stop device 23 is made of a soft rubber material, has elasticity, and is held in a fixed position with the contact portion 23a extending in a vertical direction, which is a predetermined direction, and the contact portion 23a between the door stop surface 9A. And a holding plate 23b. The holding plate 23 b is screwed to the landing door 21, and a part of the contact portion 23 a protrudes from the door contact surface 9 </ b> A toward the other landing door 22. On the surface of the portion of the contact portion 23a that protrudes toward the landing door 22 side, a line-like convex portion 25 that extends in the vertical direction over the entire length of the door stop device 23 is formed. The projecting portion 25 is formed in a shape in which the entire protruding portion is a curved surface that is a surface that is non-parallel to the door front surface 7 and does not have a surface that is parallel to the door front surface 7.

  The end of the contact portion 23a in the direction orthogonal to the sliding direction of the landing door 21 has only a non-parallel surface with respect to the door front surface 7 and does not have a surface parallel to the door front surface 7. The formed arcuate contact portion end portion 26 is formed.

  The door stop device 24 is formed of a soft rubber material, has elasticity, and holds the contact portion 24a extending in a vertical direction, which is a predetermined direction, between the contact portion 24a and the door stop surface 9A so as to be fixed in position. And a holding plate 24b. The holding plate 24 b is screwed to the landing door 22, and a part of the contact portion 24 a protrudes from the door contact surface 9 </ b> A toward the other landing door 21. On the surface of the portion of the contact portion 24 a that protrudes toward the landing door 21, the strip-shaped recess 27 that extends in the vertical direction over the entire length of the door stop device 24 and can be engaged with the strip-shaped projection 25. Is formed. The concave portion 27 is formed in a shape having a curved surface that is a non-parallel surface with respect to the door front surface 7 and having no surface parallel to the door front surface.

  The end of the contact portion 24a in the direction orthogonal to the sliding direction of the landing door 22 has only a non-parallel surface with respect to the door front surface 7 and does not have a surface parallel to the door front surface 7. A formed arcuate contact portion end 28 is formed.

  In such a configuration, when the landing doors 21 and 22 are opened or closed, the contact portion 23a of the landing door 21 and the contact portion 24a of the landing door 22 face each other with a minute gap as shown in FIG. A condition occurs. In this case, an air flow path 29 through which air flows is formed between the contact portion 23a and the contact portion 24a.

  When an air flow path 29 as shown in FIG. 4 is formed between the contact portion 23a and the contact portion 24a, the elevator hoistway from the elevator landing 5 according to the pressure difference between the elevator landing 5 and the elevator hoistway 4 4 is generated in the air flow path 29.

  Since the air flow path 29 is formed in a smooth curved surface as a whole, the air flow smoothly proceeds in the air flow path 29, and the air flow from the peripheral surface of the air flow path 29 in the air flow path 29. No peeling or vortexing occurs. For this reason, generation | occurrence | production of the whistling sound caused by peeling of airflow and generation | occurrence | production of a vortex is prevented.

  Further, the flow of air entering the air flow path 29 and the flow of air passing through the air flow path 29 proceed along the contact portion end portions 26 and 28 formed in an arc shape. For this reason, when the air flow enters the air flow path 29 and when the air flow passes through the air flow path 29, it is possible to prevent the separation of the air flow and the generation of the vortex, and the air flow is the air flow. It is possible to prevent a whistling sound from occurring when entering the passage 29 or passing through the air passage 29.

  Furthermore, according to the second embodiment, there is no need to provide a board as shown in Patent Document 2 in order to prevent the generation of whistling noise, and the threshold of the elevator hall 5 and the threshold of the elevator car 3 The gap dimension between the two can be reduced.

It is a horizontal sectional view showing the positional relationship between the landing door and the elevator car in the elevator landing door device according to the first embodiment of the present invention. It is a horizontal sectional view showing the structure of a landing door device for an elevator. It is a horizontal sectional view showing a door stop device. It is a horizontal sectional view showing a state where an air channel is formed between a pair of contact parts and air flows through the air channel. It is a graph which shows the measurement result at the time of conducting the measurement experiment of a whistle blowing sound using the door stop apparatus of the 1st Embodiment of this invention. It is a graph which shows the measurement result at the time of conducting the measurement experiment of a whistle blowing sound using the door stop apparatus of the conventional structure shown in FIG. It is a graph which shows the measurement result at the time of making a trial experiment of the door stop apparatus of the modification shown in FIG. It is a horizontal sectional view showing the landing door device of the elevator using the door stop device of the modification made as an experiment in order to perform the measurement experiment of the whistling sound. It is a horizontal sectional view showing the structure of an elevator landing door device according to a second embodiment of the present invention. It is a horizontal sectional view showing a state where an air channel is formed between a pair of contact parts and air flows through the air channel. It is a horizontal sectional view explaining the generation mechanism of a whistle blowing sound in an elevator landing door device using a conventional door stop device.

Explanation of symbols

1, 2 landing door 7 door front 8 car facing surface 9 door contact surface 9A door contact surface 10a, 11a contact portion 13 convex portion 14 concave portion 15 corner portion 16 projecting piece 21, 22 landing door 23a, 24a contact portion 25 convex portion 26, 28 Contact portion end portion 27 Recess

Claims (8)

A pair of double-opening type landing doors movable between a closed position and an open position;
A pair of contact portions that are attached so as to extend in a predetermined direction in the vicinity of the door-contact surface side of the landing door;
A convex portion is formed on the surface of one of the contact portions, and a concave portion is formed on the surface of the other contact portion,
The elevator landing door device, wherein the convex portion and the concave portion have a surface that is non-parallel to a front face of the landing door. The contact portion has a protruding piece that covers a corner formed by a car facing surface facing the elevator car in the landing door and the door-contacting surface,
The elevator landing door device according to claim 1, wherein the projecting piece is formed to be bent in a direction in which a tip portion is brought into contact with the door contact surface.   3. The elevator landing door device according to claim 1, wherein the contact portion is attached to be adjustable in position along an opening / closing direction of the landing door.   The elevator landing door device according to any one of claims 1 to 3, wherein the contact portion is formed of a hollow elastic body.   The elevator landing door device according to any one of claims 1 to 4, wherein the contact portion is attached to a side of the landing door facing the elevator car.   The elevator landing door device according to any one of claims 1 to 5, wherein a part of the surface of the contact portion is formed so as to protrude outward in an arc shape.   The contact portion is attached in the vicinity of the door contact surface of the landing door, and the contact portion end located on the end side in the direction orthogonal to the moving direction of the landing door is relative to the door front surface of the landing door. The elevator landing door device according to claim 1, further comprising non-parallel surfaces.   The elevator landing door device according to any one of claims 1 to 7, wherein portions of the convex portion or the concave portion facing each other are arranged so as to protrude from the door contact surface.

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