JP2007308287A - Door device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door device for an elevator capable of preventing or reducing noise in opening a door by reducing air flow passing through between the car door and a safety shoe. <P>SOLUTION: At least one of the door stop side end of the car door and the safety shoe 3 includes a reducing means for reducing air flow passing through a clearance formed between the door stop side end of the car door and the safety shoe 3. The reducing means is composed of a blocking body 5, for instance, provided over the upper and lower sides of the safety shoe 3 to block the whole or a part of the clearance 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator door device capable of reducing noise.

  The hall entrance / exit formed in the elevator hall is normally formed by a hall three-way frame and a hall sill, and is opened and closed by a sliding hall door provided on the hoistway side. In the hall having such a structure, a very slight gap is formed between the hall door and the sill and between the hall door and the three-way frame of the hall, so that the smoke- and flame-shielding properties are low and the gap passes through the gap. There was a problem that fluid noise was generated by the air flow.

  In view of this, conventionally, there has been proposed one in which the gap is closed with a sealing material or the like to improve the smoke shielding property, flame shielding property, and quietness when the landing door is fully closed (see, for example, Patent Document 1). ).

JP 2005-15076 A

In the thing of patent document 1, since the said clearance gap is completely obstruct | occluded with a sealing material etc. at the time of full closure of a landing door, the flow of the air between a hoistway and a landing is interrupted | blocked and airtightness improves.
On the other hand, a pressure difference due to the height of the building equipped with the elevator and the temperature difference between the inside and outside of the building occurs between the hoistway and the landing, so the landing door is opened at the landing having the above configuration. In the lower floor, a phenomenon occurs in which air flows from the landing to the hoistway, and in the upper floor, air flows from the hoistway to the landing. In particular, when a high-rise building is equipped with an elevator, or in winter when the temperature difference between the inside and outside of the building is large, the above phenomenon appears remarkably.

  7 and 8 are diagrams for explaining the above phenomenon. FIG. 7 is a cross-sectional view of a building provided with a plurality of elevators. FIG. 8 is a main part of a conventional elevator door device. It is a cross-sectional view. As shown in FIG. 7, when a plurality of elevators are provided in the elevator hall (in the bank), all landing doors are fully closed if the ones described in Patent Document 1 are provided at each landing. The airtightness between the hoistway and each landing, that is, the entire elevator hall is ensured. However, if one of the elevators stops at the landing and the landing door is opened, the air flow for the multiple blocked elevators concentrates there, so the air flow There has been a problem that a large noise is generated through a gap formed between the cage door and the safety shoe.

  The present invention has been made to solve the above-described problems, and its object is to prevent or reduce noise when the door is opened by reducing the air flow passing between the car door and the safety shoe. It is to provide an elevator door device that can be used.

  An elevator door device according to the present invention includes a car door provided in an elevator car, a safety shoe for preventing pinching provided at a door-end side end portion of the car door, and a door-end side end portion of the car door. And the air that is provided on at least one of the safety shoes and is arranged over and under the door-end side end of the car door and passes through a gap formed between the door-end side of the car door and the safety shoe. And a reducing means for reducing the flow.

  The present invention includes at least one of a car door provided in an elevator car, a safety shoe for preventing pinching provided at a door-end side end of the car door, a door-end side end of the car door, and a safety shoe. A reducing means that is provided on one side and is arranged over the door-end side end of the car door to reduce the air flow passing through the gap formed between the door-end side end of the car door and the safety shoe. Therefore, it is possible to reduce or reduce the air flow passing between the car door and the safety shoe, thereby preventing or reducing noise when the door is opened.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a plan view of an essential part showing an elevator door apparatus according to Embodiment 1 of the present invention, and shows a door end side end portion of a double door type car door provided in a car that moves up and down in a hoistway. It is. In FIG. 1, 1 is a door panel that constitutes a main part of a car door and covers a car doorway when the car door is closed, 2 is a rubber for a door provided on the back side of the door panel 1, and 3 is a door on the back of the car door. It is a safety shoe for preventing pinching provided at a side end.

  Here, the safety shoe 3 is provided so as to be able to advance and retreat in the door opening / closing direction with respect to the car door, and a part of the safety shoe 3 (hereinafter referred to as “protruding portion”) is normally opened and closed from the door end side surface 1a of the car door. It is arranged so as to protrude to the side. When the safety shoe 3 is urged in the door opening direction with respect to the car door during the door closing operation of the car door, the safety shoe 3 moves in the door opening direction with respect to the car door, and there is an obstacle. Is detected. Thus, since the safety shoe 3 moves relative to the car door in the door opening / closing direction, between the door end side (door panel 1, door rubber 2, etc.) of the car door and the safety shoe 3, A predetermined gap 4 is formed in the vertical direction of the car door.

  Reference numeral 5 denotes a closing body that is provided over one side of the safety shoe 3 that faces the back surface of the car door and that is disposed between the safety shoe 3 and the car door and closes all or part of the gap 4. . The closing body 5 includes a reducing means for reducing the air flow passing through the gap 4 when the car door and the landing door (not shown) are opened and closed, and when the car door is fully opened, and projects from the safety shoe 3 toward the car door. It is installed and is arranged across the upper and lower ends of the door-end side of the car door. In addition, the obstruction | occlusion body 5 is comprised from a sealing material, flocking, etc., for example. Here, when the closure 5 is made of a sealing material, for example, a high molecular weight rubber or elastomer is used, and when it is made of flocking, for example, it is electrostatic flocking or feathers. For example, a gap closing tape with a carpet is used.

  In addition, when the entire gap 4 is closed over the top and bottom of the car door by the closing body 5 made of a sealing material or the like, the front end of the closing body 5 that is in contact with the back surface of the car door is against the car door. It is configured to be slidable so that the operation of the safety shoe 3 is not hindered. In such a case, a coating such as fluorine coating or molybdenum disulfide may be applied to the distal end portion of the closing body 5 to improve the slidability.

  According to the first embodiment of the present invention, the closing body 5 arranged over the car door covers all or part of the gap 4 formed between the safety shoe 3 and the car door. Therefore, the airflow passing through the gap 4 can be reduced when the car door is opened and closed and fully opened. Therefore, noise can be prevented or reduced by suppressing the flow rate of air passing through the gap 4, and the spatial propagation of sound can be prevented by eliminating (reducing) the gap 4, thereby reducing noise from this viewpoint. It becomes possible.

  In addition, the said effect appears more notably as the elevator with higher airtightness between the hoistway and the elevator hall (the landing). Therefore, when a predetermined landing is provided with blocking means for blocking air flow between the hoistway and the landing when the landing door is fully closed, or a plurality of elevator landings are provided on the same floor of the building. In the case where each of the landings is provided with the above-described blocking means, it is particularly effective. In addition, the above-mentioned effect is more noticeable in a high-rise building where a large pressure difference occurs between the hoistway and the elevator hall (landing), or in winter when the temperature difference between the inside and outside of the building is large.

  Note that, if the entire gap 4 is closed by the closing body 5, it is possible to block the air flow passing through the gap 4 and reliably prevent noise, but only a part of the gap 4 is blocked. The air flow passing through the gap 4 can also be reduced. For example, according to an experiment conducted by the inventor, when the gap 4 is 6 mm, the air flow rate is about 40% compared to the case where there is no obstruction 5 by attaching the obstruction 5 made of 3 mm electrostatic flocking. It has been confirmed that it is reduced to

  Further, in the first embodiment, the case where the closing body 5 is provided in the safety shoe 3 has been described. However, the closing body 5 includes the safety shoe 3 and the car door so as to close all or part of the gap 4. If it is arranged between the two, it is possible to achieve the same effect as described above, and it is only necessary to be provided on at least one of the door end side of the car door and the safety shoe 3. Further, the structure can be simplified by integrating the closing body 5 with the safety shoe 3 and the car door (the door panel 1 and the rubber 2 per door).

Embodiment 2. FIG.
FIG. 2 is a plan view of an essential part showing an elevator door device according to Embodiment 2 of the present invention. In FIG. 2, reference numeral 6 denotes a first closing body having the same configuration as the closing body 5 in the first embodiment, and 7 denotes a safety shoe 3 provided on the upper and lower portions of the rear surface of the car door facing the safety shoe 3. It is the 2nd obstruction | occlusion body which is arrange | positioned between the doors and block | closes all or some of the gap | intervals 4. The second closing body 7 has the same function as the first closing body 6. That is, the second closing body 7 includes a reducing means for reducing the air flow passing through the gap 4 when the car door and the landing door are opened and closed, and when the car door and the landing door are fully opened, and protrudes from the car door toward the safety shoe 3. The car door is arranged over the door end side of the door. Similarly to the first closing body 6, the second closing body 7 is also composed of a sealing material, flocking or the like. When the entire gap 4 is closed by the second closing body 7, the second closing body 7 is brought into contact with one side surface of the safety shoe 3. A coating for improving slidability is applied to the tip. Other configurations are the same as those in the first embodiment.

  According to the second embodiment of the present invention, since the second closing body 7 is provided at the door-end side end of the car door, the gap is smaller than when only the first closing body 6 is installed. The amount of air passing through 4 can be further reduced. That is, a larger noise reduction effect can be expected by installing a plurality of closing bodies 6 and 7 made of flocking or the like. Other effects are the same as those of the first embodiment.

Embodiment 3 FIG.
FIG. 3 is a plan view of an essential part showing an elevator door device according to Embodiment 3 of the present invention. In FIG. 3, reference numeral 8 denotes a mounting plate that is provided over and under the end face of the safety shoe 3 on the side opposite to the entrance / exit, and one edge thereof projects from the car door side, and 9 denotes the top and bottom of one edge of the mounting plate 8. It is a closed body that is provided across and closes all or part of the gap 4 together with the mounting plate 8. The mounting plate 8 and the closing body 9 are made of a reducing means for reducing the air flow passing through the gap 4 when the car door and the landing door are opened and closed and when the car door is fully opened, and project from the safety shoe 3 toward the car door. It is arranged over the top and bottom ends of the door side of the car door.

  Moreover, the closure body 9 is comprised from a sealing material, flocking, etc. similarly to the closure body 5 in Embodiment 1. FIG. When the entire gap 4 is closed by the mounting plate 8 and the closing body 9, a coating for improving the slidability is applied to the front end portion of the closing body 9 that is brought into contact with the upper and lower sides of the car door. When closing the entire gap 4, the closing body 9 comes into contact with one edge of the door panel 1 whose front end is bent in a substantially U shape in plan view, as shown in FIG. Configured to do. Other configurations are the same as those in the first embodiment.

  According to the third embodiment of the present invention, since the closing body 9 is provided on the safety shoe 3 via the mounting plate 8, the closing body 9 and the car door can be changed by changing the shape or size of the mounting plate 8. Can be easily adjusted. Therefore, the gap 4 can be completely closed, and a greater low noise effect can be expected. Further, it is particularly effective when it is difficult to directly attach the closing body 9 to the safety shoe 3. Other effects are the same as those of the first embodiment.

Embodiment 4 FIG.
4 is a plan view of an essential part showing an elevator door device according to Embodiment 4 of the present invention. In FIG. 4, reference numeral 10 denotes a mounting plate provided on the upper and lower ends of the door contact side of the car door, and one edge thereof projects from the safety shoe 3 side, and 11 indicates the upper and lower ends of one edge of the mounting plate 10. It is a closed body that covers all or part of the gap 4 together with the mounting plate 10. The mounting plate 10 and the closing body 11 are composed of a reducing means for reducing the air flow passing through the gap 4 when the car door and the landing door are opened and closed and when the car door is fully opened, and project from the car door toward the safety shoe 3. It is arranged over the top and bottom ends of the door side of the car door.

  Moreover, the closure body 11 is comprised from a sealing material, flocking, etc. similarly to the closure body 5 in Embodiment 1. FIG. When the entire gap 4 is closed by the mounting plate 10 and the closing body 11, a coating for improving the slidability is applied to the front end portion of the closing body 11 that is brought into contact with the upper and lower sides of the car door. Note that, when the entire gap 4 is closed, the closing body 11 is configured such that, for example, as shown in FIG. 4, the front end portion thereof is in contact with the top and bottom of the end face on the opposite side of the safety shoe 3. Other configurations are the same as those in the third embodiment, and the same effects as those in the third embodiment can be obtained by such a configuration.

Embodiment 5 FIG.
5 is a plan view of an essential part showing an elevator door device according to Embodiment 5 of the present invention. In FIG. 5, reference numeral 12 denotes a flow path changing plate which is provided over the safety shoe 3 and has an edge projecting from the car door side. The flow path changing plate 12 is formed so that one edge projecting toward the car door side extends over the top and bottom of the car door by bending the door-end side end of the door panel 1 into a substantially U shape in plan view. It is arranged in a recess of the recess 1b that opens to the opposite entrance side. Here, the concave portion 1b and the flow path changing plate 12 of the door panel 1 include a reducing means for reducing the air flow passing through the gap 4 when the car door and the landing door are opened and closed, and when the car door is fully opened. It arrange | positions over the upper and lower sides of the contact side edge part.

  In the door device having such a configuration, for example, when the airflow passing through the gap 4 flows from the landing side to the hoistway side, after passing between the car door and the safety shoe 3, the airflow is guided to the flow path changing plate 12. The direction of travel is reversed, and the door panel 1 enters the recess 1b. Then, the traveling direction is further reversed by being guided by the recess 1b of the door panel 1, and flows into the hoistway. Therefore, since the flow path of the air flow becomes longer and the traveling direction thereof is reversed, the flow rate of air passing through the gap 4 can be suppressed and noise can be prevented or reduced.

  Further, it is possible to further reduce noise by narrowing the space between the flow path changing plate 12 and the door panel 1 or by providing the closing body 5 or the like in the first embodiment on the flow path changing plate 12 or the like. is there. Other configurations and effects are the same as those of the first embodiment.

Embodiment 6 FIG.
6 is a plan view of an essential part showing an elevator door device according to Embodiment 6 of the present invention. In FIG. 6, 3a is formed over and under the end face of the safety shoe 3 on the side of the entrance / exit side, and a recess opening on the side of the entrance / exit side, and 13 is provided over and under the end of the door end of the car door. This is a flow path changing plate having an edge protruding from the safety shoe 3 side. The flow path changing plate 13 has an edge portion that protrudes toward the safety shoe 3 and is disposed in the recess of the concave portion 3a. Here, the concave portion 3a and the flow path changing plate 13 of the safety shoe 3 are composed of a reducing means for reducing the air flow passing through the gap 4 when the car door and the landing door are opened and closed, or when the car door is fully opened. It is arranged over the top and bottom of the door end side.

  In the door device having such a configuration, for example, when the airflow passing through the gap 4 flows from the landing side to the hoistway side, after passing between the car door and the safety shoe 3, the airflow is guided to the flow path changing plate 13. As a result, the traveling direction is reversed and the safety shoe 3 enters the recess 3a. Then, the traveling direction is further reversed by being guided by the recess 3a of the safety shoe 3, and flows into the hoistway. Other configurations are the same as those of the fifth embodiment, and the same effects as those of the fifth embodiment can be obtained by such a configuration.

It is a principal part top view which shows the door apparatus of the elevator in Embodiment 1 of this invention. It is a principal part top view which shows the door apparatus of the elevator in Embodiment 2 of this invention. It is a principal part top view which shows the door apparatus of the elevator in Embodiment 3 of this invention. It is a principal part top view which shows the door apparatus of the elevator in Embodiment 4 of this invention. It is a principal part top view which shows the door apparatus of the elevator in Embodiment 5 of this invention. It is a principal part top view which shows the door apparatus of the elevator in Embodiment 6 of this invention. It is a cross-sectional view of a building provided with a plurality of elevators. It is a principal part cross-sectional view of the door apparatus of the conventional elevator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door panel 1a Door end side surface 1b, 3a Concave part 2 Door rubber | gum 3 Safety shoe 4 Crevice 5, 9, 11 Closure body 6 1st obstruction body 7 2nd obstruction body 8, 10, Mounting plate 12, 13 Flow path change board

Claims (7)

A car door provided in the elevator car,
A safety shoe for preventing pinching provided at a door-end side end of the car door;
Provided at at least one of the door-end side end of the car door and the safety shoe, and arranged over the door-end side end of the car door, and the door-end side end of the car door; A reducing means for reducing an air flow passing through a gap formed between the safety shoes;
An elevator door device comprising: Reduction means are
Provided with one end of the door end side of the car door and the safety shoe, and a closing body that closes all or part of the gap formed between the door end side portion of the car door and the safety shoe. The elevator door device according to claim 1. Reduction means are
A mounting plate provided on the door end of the car door and one of the safety shoes;
A closing body that is provided on the mounting plate and closes all or part of a gap formed between the mounting plate and the door end side of the car door and the safety shoe;
The elevator door device according to claim 1, further comprising:   4. The elevator door device according to claim 2, wherein a front end portion of the closing body is in contact with a door-end side end portion of the car door and the other of the safety shoes. 5. Reduction means are
A recess formed in one of the door end side of the car door and the safety shoe, and opened to the counter-entrance side;
A flow path changing plate that is provided on the door end side of the car door and the other of the safety shoes, and whose one edge is disposed in the recess of the recess;
The elevator door device according to claim 1, further comprising: A landing door provided at a predetermined landing of the elevator,
A blocking means provided at the landing and blocking air flow between the hoistway and the landing when the landing door is fully closed;
The elevator door device according to any one of claims 1 to 5, further comprising:   The elevator door device according to claim 6, wherein a plurality of elevator halls are provided on the same floor of a building, and a blocking means is provided at each hall.

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