JP2005290960A - Safety device for revolving door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve safety of a revolving door by applying a flexible or movable plate to a part of a door of the revolving portion of the revolving door. <P>SOLUTION: More than three sheets, primarily four sheets of the revolving part of the door are composed of rigid plates and flexible/movable plates. The safety device works in such a way that in case a whole or a part of a human body enters between the door of the revolving portion and a semicircular plate of a fixed portion and is caught between them, the flexible/movable plate bends, so that the part got stuck is not injured. Also, the safety device for the revolving door is additionally provided with a sensor for detecting a deflection of the flexible plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, when the space between the semicircular plate of the fixed part of the revolving door installed at the entrance of the building and the door plate of the revolving part becomes narrow at a certain rotation angle, all or one of the humans is between the two. The present invention relates to a safety device for a revolving door that prevents a human being from being subjected to pressure that causes damage when a part enters and further rotates and is sandwiched between the two.

A revolving door is used at the entrance of the building. Revolving doors are popular because they have the advantages of being unaffected by strong external winds and having good shut-off from outside air during cooling and heating operations. In general, the small ones that are well known have one person in the rotating part and the door is manually rotated. In this case, even if all or a part of the human enters in an unexpected part, the rotating part can be stopped immediately by human power, so there is almost no risk of damaging the human. Recently, however, the area between the two door plates of the rotating part has increased, and a large structure in which a large number of people can enter the rotating part at once has become widespread. Accordingly, since the weight of the rotating part increased, a power source such as electric power was used for rotation and stoppage. In such a large revolving door, a human usually enters a place a little away from the semicircular plate of the fixed part in the space created by the two revolving part door plates, moves with the rotation of the revolving part door plate, Pass through the revolving door. However, if the door plate of the rotating part is close to the semicircular plate of the fixed part and the distance between the two is reduced, all or part of the person enters this part, and the door plate of the rotating part further rotates. If continued, the person may be pinched between the door plate of the rotating part and the semicircular plate of the fixed part. In order to avoid pinching, a structure is employed in which when all or part of a person enters a place where there is a risk of pinching, a sensor that detects the presence of the person and stops rotation is used. However, since there are many types of human physiques and human activities take various forms, it is difficult to completely detect every approach state. There is also a problem with the motion characteristics of the revolving door. In other words, since the rotating part is heavy and heavy, it has a large kinetic energy during exercise, so if you want to stop immediately after a stop command is generated, is this kinetic energy consumed in a short time? The equivalent reverse energy must be applied. Due to this stop operation, the rotary door is driven by the rotary shaft. Here, however, the problem is that the rotary shaft is slightly increased as the size of the rotary door increases with respect to the movement distance of the position of the tip of the door plate of the rotary portion. By moving at a proper angle, the moving distance of the tip of the door plate of the rotating part becomes longer. Therefore, if the rotation of the rotating part is driven from the rotating shaft and the stopping is also performed from the rotating shaft, the dead zone of the angle between the rotating power source and the rotating shaft, for example, gear backlash, etc. It is necessary to suppress the influence as much as possible as the size of the revolving door increases.
In fact, on March 26, 2004, a fatal accident occurred between the revolving part of the revolving door at the front entrance of Roppongi Hills Mori Tower, 2nd floor, Roppongi Hills Mori Tower, Minato-ku, Tokyo, and the fixed part. .
March 26, 2004, Mainichi Shimbun, Tokyo edition evening article

Problems that the invention is trying to solve

  FIG. 4 shows the structure of a conventional four-door revolving door. 30 is a semicircular plate of a fixed portion, 31 is a door plate of a rotating portion, 32 is a rotating shaft, 33 is an approach start portion, 34 is a rotating direction, 35 is a wall, 36 is an inlet, and 37 is an outlet. The normal usage of the revolving door is that when the two door plates 31 of the revolving part are opened widely in the direction of the entrance 36, a person enters and the door plate 31 of the revolving part rotates about the rotation axis 32 in the rotation direction 34. Then, when the person also moves together and the door plate 31 of the rotating part rotates 180 degrees, the person reaches the outlet 37 and passes by.

  When the door 31 of the rotating part is close to the fixed part 30, the proximity start part 33 has a space where a human can enter, in particular, a space where a child with a small physique can enter, and the space is an area where the door 31 of the rotating part contacts the fixed part. It becomes narrower as it reaches. In the case where the capacity of the revolving door is for one person and is manually rotated, even if a person is caught between the door plate and the fixed part of the rotating part, the rotation is easily stopped by human power and it is easy to escape . However, the latest revolving door has become larger, and a type in which a large number of people pass through the revolving door at a time has become widespread. In the case of such a large revolving door, since the space created by the door plates 31 of the two revolving parts is wide, humans may occupy positions in various places. In particular, it is assumed that a human has entered the portion near the fixed portion 31 of the door plate 31 of the revolving door, shortly before reaching the proximity start portion 33, and this danger situation could not be detected or even if it was detected, from detection to stop. If there is a time delay between them, if the rotation further progresses, humans will be sandwiched between the door plate 31 of the rotating part and the semicircular plate 30 of the rotating part, and it is considered that it will be strongly compressed and damaged. .

  In the present invention, even if a person enters the gap between the door plate 31 of the rotating part and the fixed part 30 and the object comes into contact between the door plate 31 and the fixed part 30 of the rotating part, the person may be damaged. It is another object of the present invention to prevent the danger of the revolving door including a function of stopping the rotation by detecting that the person is in contact with the door plate of the revolving part, while preventing a large pressure from being received.

Means for solving the problem

  The above object is achieved by the present invention having the following features. That is, the invention described in claim 1 is a door plate of three or more, mainly four rotating parts, which are installed at the entrance of a building and connected radially from the rotating shaft around the rotating shaft, and a door plate of the rotating part. In the revolving door consisting of a semicircular plate of a fixed part in contact with each other, the door plate of each revolving part is connected to the basic part and a basic part made of a hard material connected to the revolving axis when viewed from the revolving axis. The base portion is composed of a tip portion made of a plate having a flexible material that comes into contact with the semicircular plate of the fixed portion at the tip, or a plate having a movable hard material. Between the portions, the tip portion has a connection portion that allows the tip portion to be bent.

  According to a second aspect of the present invention, the safety device for a revolving door according to the first aspect includes a sensor for detecting that the basic portion and the tip portion are bent.

The invention's effect

  According to the present invention, when a person enters between the door plate 31 of the rotating portion of the revolving door and the semicircular plate 30 of the fixed portion, the pressure that damages the human is not applied, and danger is prevented.

Best Mode for Carrying Out the Invention

  A flexible or movable plate is provided on a part of the door plate 31 of the rotating part so that no pressure is applied so as to damage all or part of the human being sandwiched between the rotations 30, and at the same time It was detected that the flexible or movable plate which is a part of the door plate 31 was changed, and the rotation of the door plate 31 of the rotating portion was stopped.

  FIG. 1 shows the structure of a revolving door according to the present invention. The upper figure shows the revolving door as viewed from the ceiling down. The lower figure is a view of the revolving door as viewed from the side. The same parts in both drawings are connected by dotted lines. 1 is a semi-circular plate of a fixed portion, 2 is a door plate of a rotating portion, 3 is a rotating shaft, 4 is a connection point, 5 is a wall, 6 is an inlet, 7 is an outlet, 8 is a rotation direction, and 9 is a proximity start portion. . The rotary door is configured such that four rotary door plates 2 are attached radially around the rotary shaft 3 and are surrounded by the semicircular plate 1 of the fixed portion. It is separated. The rotation is assumed to be counterclockwise 8 when viewed from the top. Note that the entrance 6 and the exit 7 can of course be used in reverse.

  FIG. 2 shows the internal structure of the door plate 2 of the rotating part according to the present invention. The upper figure shows the revolving door as viewed from the ceiling down. The lower figure is a view of the revolving door as viewed from the side. The same parts in both drawings are connected by dotted lines. Reference numeral 10 denotes a basic part, 11 denotes a tip part, 12 denotes a displacement sensor, 13 denotes a side of the fixed part that contacts the semicircular plate, and 14 denotes a side that connects to the rotating shaft. The door plate 2 of the rotating portion is composed of a basic portion 10, a tip portion 11, and a deformation sensor 12 to which the connecting portion is attached, and the basic portion 10 and the tip portion 11 are given a degree of freedom to bend at the connection point 4. The side 13 that contacts the semicircular plate of the fixed portion is in contact with the semicircular plate 1 of the fixed portion, and the side 14 that is connected to the rotary shaft is connected to the rotary shaft 3. The basic portion 10 is a hard material plate similar to the door plate 31 of the conventional rotating portion. The distal end portion 11 is a plate made of a flexible material or a plate made of a hard material having mobility, and is bent in the Y direction when a force is applied from the −Y direction around the connection point 4. Have When the phenomenon that the deformation sensor 12 is bent occurs, the bending is detected.

  FIG. 3 shows the bent state of the door plate 2 of the rotating portion according to the present invention in the case of a and b. When the tip portion 11 receives a force from the -Y direction, in the case of a, the tip portion 11 is bent more flexibly than the connection portion 4 around the connection portion 4, and in the case of b, the connection portion 4 is centered. The connecting portion 4 has a structure that bends more flexibly.

  In the revolving door, by providing the door plate 2 of the rotating portion according to the present invention, when the door plate 2 of the rotating portion rotates and reaches the proximity start portion 9 approaching the fixed portion 1, it is fixed to the door plate 2 of the rotating portion. When all or a part of a person enters between the semi-discs 1 of the portion and is sandwiched between the door plate 2 of the rotating portion and the semi-disc 1 of the fixed portion, the tip portion 11 of the door plate 2 of the rotating portion is The bending sensor 12 prevents the human being from being damaged, and the displacement sensor 12 attached in the vicinity of the connection point 4 detects the bending of the front end portion 11 of the door plate 2 of the rotating portion, thereby stopping the rotation. Can be activated. The transition sensor actually detects the state when the flexible part of the door plate of the rotating part is bent, but detects that an object including a person approaches the area of the proximity start part 33. Thus, it is effective to use another sensor that generates a stop command in order to increase the safety level.

By applying the principle of the present invention to the revolving door, it contributes to danger prevention.

It is the figure which showed the structure of the revolving door which concerns on an Example. It is the figure which showed the structure of the doorplate of the rotation part which concerns on an Example. It is the figure which showed the operation | movement condition in which the doorplate of the rotation part which concerns on an Example bends. It is the figure which showed the structure of the conventional revolving door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Semi-disc of fixed part 2 Door plate of rotary part 3 Rotating shaft 4 Connection location 5 Wall 6 Inlet 7 Outlet 8 Rotation direction 9 Proximity start part 10 Basic part 11 Tip part 12 Transition sensor 13 Side in contact with semi-disc of fixed part 14 Side 30 connected to rotating shaft 30 Semi-circular plate 31 Fixed portion Door plate 32 Rotating shaft 33 Proximity starting portion 34 Rotating direction 35 Wall 36 Entrance 37 Exit

Claims (2)

  Rotation consisting of three or more, mainly four rotating part door plates installed at the entrance of a building and connected radially from the rotating shaft around the rotating shaft, and a fixed semicircular plate in contact with the rotating part door plate In the door, the door plate of each rotating part is viewed from the rotating shaft, the basic part made of a plate made of a hard material connected to the rotating shaft, and the tip of the fixed part semicircular plate connected to the basic part It is comprised by the front-end | tip part which consists of a board | plate which has a flexible material which touches by, or a board | plate which has a hard material with mobility, and the said front-end | tip part bends between the said basic | foundation part and the said front-end | tip part. Revolving door safety device characterized by having connection points that enable   The safety device for a revolving door according to claim 1, further comprising a sensor for detecting that the basic portion and the tip portion are bent.

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