JP2798974B2 - Automatic revolving door - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic revolving door used for doorways of hotels, banks, theaters and other buildings.

[Conventional technology]

Due to the structure of the revolving door, the outside and the inside are always shut off by the door.
It is awarded at the entrance to hotels, banks, theaters and other buildings.

FIG. 5 is a schematic view of a conventional revolving door viewed from above. This revolving door has a plurality of, for example, four, doors (2), (2)... At a predetermined center on a rotating column (1) that is rotatably erected between a ceiling and a floor as a building frame. Attach radially at an angle (for example, 90 ° when there are four doors (2)) and follow the rotation trajectory of the tip of the doors (2) (2)... Left and right door frames (4) and (4), which are formed in an arc shape and have entrances (3) and (3) formed therebetween, are opposed to each other. ), A handle (not shown) attached to the door body (2) is pushed and the door body (2) is rotated to enter and exit along the door frame (4).

[Problems to be solved by the invention]

By the way, the revolving door which has been used conventionally has a configuration in which a passerby pushes and rotates the door body (2) to stop when the rotational energy is lost, so that the door body (2) is adjacent to the cubic ( 5) Stopping halfway between (5), which not only makes it difficult to operate due to the small entrance and exit when entering, but also pushes the door (2) in the opposite direction, causing unexpected injury to others. There was a problem that could lead to it. Also,
When many people go in and out continuously, the door body (2) rotates at high speed and continues to rotate due to inertia, so it is difficult to rotate at low speed. There was a drawback that hitting it could lead to an unexpected accident. In addition, this kind of revolving door is configured to be heavy so as not to rotate due to wind pressure or the like, and a considerable force is required to push and rotate the door body (2). It was annoying. In addition, since the door body (2) is pushed and rotated while walking, an accident in which a hand or a finger is erroneously pinched between the door body (2) and the door frame (4) has occurred. Further, since the conventional rotating door has a structure in which a reverse rotation of the door body (2) is prevented by a lock type anti-reverse mechanism such as a ratchet, a drunk person or the like moves the door (2) in a reverse direction with a large force. Press
There is a drawback that the door (2) and the reverse rotation prevention mechanism are damaged.

The present invention has been made in view of such a problem, and when a touch switch attached to a door body is pressed, the door body automatically rotates and stops so that an entrance is widest, and the body and the body are stopped. It is an object of the present invention to provide an automatic revolving door in which the door rotates in a reverse direction to immediately pull out the luggage when the luggage or the like is about to be narrowed.

[Means for solving the problem]

In order to achieve the above object, according to the structure of the present invention, holding plates are attached to upper and lower sides of a rotating column rotatably disposed between a ceiling and a floor, and a plurality of doors are attached to the rotating column between the holding plates. Are pivoted at a predetermined central angle so as to be radial with respect to the center, and each door body is fixed to the rotating column so as not to rotate with a force less than a set value, and the doors are provided on both sides thereof. In an automatic revolving door in which arc-shaped door frames are arranged to face each other along a rotation trajectory of a body, a door switch including a touch switch and the like attached to a part of each of the doors, and the doors The door pinch detection sensor consisting of a tape switch and the like continuously attached to the outer edge and the lower end of the door, and the door switch and the door pinch detection sensor are electrically connected to each other. Depending on the signal A pulse generator for outputting each different pulse signal, a light emitter electrically connected to the pulse generator and emitting light in response to a different kind of pulse signal from the pulse generator, and a light emitter corresponding to the light emitter. A photoelectric sensor for detecting light emission from the light emitting device, and interposed between a rotating disk attached to the rotating support and a part on the ceiling side, or disposed in a controller described below, and A door rotation angle detecting means for detecting a rotation angle of the body, a drive motor connected to the rotating support and rotating the door and preventing reverse rotation of the door by its braking force; And an encoder for detecting the rotation speed, rotation position, forward / reverse of the rotation direction, etc. of the drive motor, and the photoelectric sensor, the door body rotation angle detection means and the encoder. Or rotate at a set speed the door body by the detection signal of the door switch from Nsa by driving the drive motor, also the door body by a detection signal from the door member rotation angle detecting means 180
と と も に While the speed of the drive motor is reduced from the rotated position to reduce the rotation of the door, the drive motor is stopped at the position where the door is rotated 270 ° to stop the door at the door stop position, or When the door body is reversely rotated with a pressing force equal to or greater than the braking force of the drive motor, when the pressing force on the door body is released, the drive motor is driven to rotate forward by a detection signal from an encoder, and the door body is rotated. Or forward rotation at a low speed to the door stop position, and furthermore, the drive motor is urgently stopped by the detection signal of the door pinch detection sensor from the photoelectric sensor to stop the door body, and then the drive motor is slightly rotated at a low speed. The door is provided with a controller which is driven to rotate in the reverse direction to slightly rotate the door in the reverse direction.

[Action]

When the door switch is pressed, it is connected to the pulse emitter and outputs a pulse signal.The pulse signal causes the light emitter to emit light and the photoelectric sensor to detect this, and the photoelectric sensor detects and drives the drive motor via the controller. Rotate the door body, detect the rotation angle of the door body with the door body rotation angle detection means, input it to the controller, rotate the door body at the set speed up to 180 ° rotation after starting, and slow down from the position rotated 180 ° Move to rotation and stop at the position rotated 270 °. Then, if the door switch is pressed again during the rotation operation, the operation returns to the origin, and the above operation is continuously repeated. Also, even if the door is to be rotated in the reverse direction, the door is unlikely to rotate in the reverse direction due to the braking force of the drive motor. When the pressing force is released, the drive motor is driven to rotate via the controller to rotate the door forward at a low speed, and the door is stopped by actuating the braking of the drive motor before the door stop position. Also, when a body or luggage is caught between the door body and the door frame, the pulse generator is energized by the detection signal of the door entrapment detection sensor and outputs a pulse signal. The sensor detects this and reversely rotates the drive motor via the controller by means of the photoelectric sensor, and then stops, whereby the door instantaneously reverses slightly and stops.

〔Example〕

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

FIG. 1 is a schematic view of an automatic revolving door according to the present invention.
In the figure, (6) is a rotating column provided between a ceiling (7) and a floor (8), which are building frames, and a box-shaped cylindrical case (upper end attached to the ceiling (7)). 9) In the center of the bearing (1
0) and an oil seal (11), and the lower end is rotatably supported on a floor (8) via a bearing device (12). Disk-shaped holding plates (13, 14) are fixed vertically to the rotating support (6), and a plurality of doors (15, (15),...) Are provided between the holding plates (13, 14). It is mounted so as to be radial with respect to (6). Incidentally, four doors (15) in the embodiment are mounted at an angle of 90 ° with each of the doors extending radially. Door body (1
In 5), the upper and lower ends of one side are connected to the holding plate (1
3) It is rotatably mounted on the holding plates (13) and (14) by being pivotally supported by (14). The door (15) can be fixed to the rotating column (6) by a lock mechanism (17). For example, as shown in FIG. 3, the lock mechanism (17) includes a spring (1) in a fitting hole (18) provided in the door body (15).
9), and the base of the spring (19) is slid in the insertion hole (18) with the screw (20).
1) and a locking member, for example, a ball (23), which is fitted to a locking portion (22a) of a receiving member (22) provided at the tip of the rotating support (6). , Ball (23)
(2) provided on the rotating column (6) by the spring (19)
2) The door (15) is elastically locked in the locking recess (22a) to fix the door body (15) to the rotating column (6). When an excessive force greater than the spring force of the spring (19) acts, the ball (23) is a locking recess (22a) of the receiving member (22) provided on the rotating support (6).
And the door body (15) is free with respect to the rotating support (6), and rotates about the support shaft (16) as a fulcrum. In the lock mechanism (17), receiving member (22) of the stop recesses (22a) is formed asymmetrically in consideration of the power failure and safety, locking force for locking force and F ₂ direction with respect to F ₁ direction Is set to F ₁ > F ₂ . Therefore, the door body (15) hardly come off even by pressing the F ₁ direction in the event of a power failure, also, if a person is sandwiched safe is unlocked as soon because locking force is weak against F ₂ direction is there. The locking member of the lock mechanism (17) is not limited to the ball (23) as shown in FIG. 3, but may be other than the ball (23). For example, it has a function to prevent it from coming out of the fitting hole (17).
A pin whose tip can be fitted into the locking recess (22a) of the receiving member (22) provided on the rotation support shaft (6) may be used. Door frames (24), (24) having an arc shape along the rotation locus of the tip of a door body (15) that rotates as a shaft with a rotating column (6) are mounted facing each other on the left and right sides. ) (24) Doorway (25)
(25) is formed. The door body (15) is provided with a door switch (26) composed of a touch switch, for example, on a grip portion, and a door pinch detection sensor (27) composed of a tape switch continuously arranged on an outer edge and a lower end. A pulse generator (28) that is mounted and has this door switch (26) and door pinch detection sensor (27) provided on the holding plate (13)
Connect to A support shaft (16) supporting the upper end of the door body (15) on the holding plate (13) connects the pulse generator (28) with the door switch (26) and the door pinch detection sensor (27). It is formed in a hollow shape so that electric wiring can be inserted. The pulse generator (28) outputs two types of pulses based on the detection signal of the door switch (26) and the detection signal of the door pinch detection sensor (27), and emits the light (29) provided at the upper end of the rotating column (6). ), And a photoelectric sensor (30) is provided on the ceiling (7) so as to face the light emitting device (29). A rotating disk (31) is attached to the upper end of the rotating column (6), and four door body rotation angle detection means, for example, a dog ( 32) (32) ... are installed at 90 ° angle intervals, and the door body rotation angle detection sensor (33) such as a limit switch or sensor switch faces the dog (32) (32) ... in the case (9). Top cap (not shown)
It is installed corresponding to the upper surface of. A drive motor (34) such as a direct drive motor is mounted on the peripheral wall of the case (9), and the output shaft of the drive motor (34) and the rotating column (6) are connected to the bevel gear (35) in the case (9). (36)
Are connected via A lubricating oil (37) is accommodated in the bottom of the case (9). A bevel gear (35) is immersed in the lubricating oil (37), and the lubricating oil (37) is rotated with the rotation of the bevel gear (34). ) To refuel the bevel gears (35) and (36). The drive motor (34) is driven by a control device via a controller (38) that starts and stops a control signal based on detection values from the photoelectric sensor (30) and the door body rotation angle detection sensor (33). The drive motor (34) has a built-in encoder (39), and the encoder (39) detects the rotation speed, rotation position, forward / reverse rotation direction, and the like of the drive motor. The controller (38) rotates the drive motor (34) by the detection signal of the door switch (26) from the photoelectric sensor (30) to rotate the door body (15) at a set speed, for example, 5 rpm,
In addition, the detection signal from the door body rotation angle detection sensor (33) reduces the speed of the drive motor (34) from the position where the door body (15) is rotated by 180 ° to reduce the rotation of the door body (15). The drive motor (34) is stopped at the position where the body (15) has rotated 270 ° to stop the door body (15) at the door stop position, and the door (15) is inverted by the detection signal of the encoder (39). Activating the braking of the drive motor (34) during rotation prevents the door (15) from rotating in the reverse direction,
Even if 5) rotates in reverse, the drive motor (34) is driven to rotate forward to rotate the door (15) at low speed and stop at the door stop position.
Further, after the drive motor (34) is urgently stopped by the light receiving signal of the photoelectric sensor (30) and the detection signal of the door pinch detection sensor (27), the door (15) is driven reversely at a low speed to reverse the door (15) by about 20 °, for example. It is configured to rotate and stop.

 The automatic revolving door according to the present invention operates as follows.

In a normal state, the door (15) is waiting at the door stop position as shown in FIG. Here, passers-by (1
When the door switch (26) provided on the handle of (5) is pressed, the pulse generator (28) is energized and the pulse generator (28) outputs a pulse, and the pulse causes the light emitter (29) to emit light. Then, this light emission is detected by the photoelectric sensor (30), and the controller (38) rotationally drives the drive motor (34). Then
The rotating column (6) rotates via the bevel gears (35) and (36), and the rotation of the rotating column (6) is obtained, and the doors (15) (15) ... rotate at a set speed, for example, 5 rpm. The rotating disk (31) also rotates with the rotation of the rotating column (6).
Dock (3) placed at 90 ° angular intervals around the outer edge of 1)
2) (32) ... door body rotation angle detection sensor (33) attached to the upper surface of the upper cap of case (9) by door body (15)
The rotation angle of (15) is detected every 90 ° and input to the controller (38). The controller (38) starts the drive motor (34) from the position where the doors (15) (15) are rotated 180 ° from the beginning. ) Is decelerated and the doors (15) (15)… rotate at low speed, and then the controller (37) operates the drive motor (34) at a position where the doors (15) (15)… rotate 270 ° from the beginning. The brake is operated to smoothly stop the doors (15) (15) at the door stop position, and wait at this position. When the door switch (26) is pressed during the above rotation operation, that is, before the doors (15), (15). Detection sensor (33)
And the door (15) (15) ... turns the door (1
5) (15) ... rotates at the set speed, shifts from the position rotated 180 ° to the low speed rotation, and stops at the position rotated 270 °.
Therefore, when a passerby is continuously passing through the revolving door, the doors (15), (15) ... rotate continuously. And
When the door switch (26) is finally pressed, the same operation as the above-described rotation operation is performed, and the doors (15) (15) stop at the door stop position.

Next, when it is attempted to rotate the doors (15) (15) in the opposite direction by human power or the like, it is difficult for the doors (15) (15) to rotate in the opposite direction due to the braking force of the drive motor (34). I do. Then, if the door body (15) is pressed with a large force greater than the braking force of the drive motor (34), the door rotates in the opposite direction. In this case, the door (15)
When there is no pressing force, the controller (38) rotates the drive motor (34) to rotate the doors (15) (15) in the forward direction at a low speed, and then the drive motor (33) stops at the door stop position. ) To stop the doors (15), (15) ....

Next, when a body or the like is sandwiched between the door bodies (15) (15) and the door frames (24) and (24), the door sandwiching detection sensor (27) is turned on and the pulse generator (28) is energized. And pulse generator (28)
Generates a pulse and emits a pulse with the light emitting device (29). This light emission is detected by the photoelectric sensor (30), and the controller (38) stops the drive motor (34) in an emergency, and the door (15)
After stopping (15), the drive motor (34) is driven to rotate in the reverse direction, and the doors (15), (15) ... rotate in the reverse direction. When the door entrapment detection sensor (27) is turned on at the same time as the door switch (26), the pulse generator (29) gives priority to the pulse of the door entrapment detection sensor (27) and performs the above operation.

Furthermore, when power is not supplied to the controller (38) at the time of a power failure or the like, the door (15) can be rotated in any direction by pushing the door (15) with human power or the like. Stops running out of rotational energy.

In the above embodiment, the rotation angle of the door body (15) is detected by the dog (32) (32)... And the door body rotation angle detection sensor (33). It is also possible to carry out. In this case, the counter in the controller (38) substitutes for the dog (32) (32) ... and the door body rotation angle detection sensor (33), and the door body (15) when the power switch (40) is turned on. Is set as the home position, and the rotation speed and rotation angle of the door body (15) are detected by the detection value of the encoder (39) built in the drive motor (34) and the counter, and the drive motor (34) Performs output control.

FIG. 4 is a schematic view showing another embodiment of the automatic revolving door according to the present invention, which is the same as the embodiment of FIG. 1 except that the driving motor (34) is directly connected to the rotating column (6). The operation is the same.

In the above embodiment, the case where the number of the doors (15) is four has been described. However, the present invention is also applicable to the case where the number of the doors (15) is three.

〔The invention's effect〕

According to this invention, since the door is driven to rotate by the drive motor, there is no need to push and rotate the door, which makes it easy for women and women without physical strength, elderly people, and people with baggage to use it, and to push the door. Since there is no need to do so, there is no possibility that a hand or a finger is accidentally caught between the door body and the door frame. In addition, the door body can always be stopped at a fixed position, and since the brake is applied to the wind pressure and the wind resistance is good, the passage is always wide and the operation is easy, and the door is used next time. Without the person turning the wrong direction,
Further, the air conditioning effect can be maintained. In addition, since the rotation speed of the door body is controlled to a safe speed, it is possible to prevent accidents such as body or luggage between the door body and the door frame, Even if a body, luggage, or the like is sandwiched between the door and the door frame, the door can be instantaneously reversely rotated and pulled out, so that the accident can be reduced. Furthermore, even if you try to rotate the door body in the reverse direction, it is difficult to rotate in the reverse direction due to the braking force of the drive motor. Even when pressed with a large force, the drive motor slips and rotates, so that damage to the door and the like can be prevented. Further, the device of the present invention has many effects such as a simpler structure than the conventional device, easy maintenance and inspection, and excellent durability.

[Brief description of the drawings]

FIG. 1 is a schematic view of an automatic revolving door according to the present invention, and FIG. 2 is a schematic view of the automatic revolving door as viewed from above. FIG. 3 is a longitudinal sectional view of an essential part showing an example of a lock mechanism. FIG. 4 is a schematic view showing another embodiment of the present invention. FIG. 5 is a schematic view of a conventional revolving door as viewed from above. (6) ... rotating column, (9) ... cylindrical case, (15) ... door body, (17) ... lock mechanism, (23) (24) ... door body, (26) ... door Switch, (27) Detector sensor for pinching door, (28) Detector, (29) Photoelectric sensor, (31) Rotating disk, (32) Dog, (33) Door Body rotation angle detection sensor, (34) Drive motor, (35) (36) Bevel gear, (37) Lubricating oil, (38) Controller, (39) Encoder.

Claims (1)

(57) [Claims] 1. A holding plate is mounted above and below a rotating column rotatably disposed between a ceiling and a floor, and a plurality of doors are arranged between the holding plates so as to be radial with the rotating column as a center. While pivotally supporting the door with a predetermined central angle, and fixing each door body to the rotating support so as not to rotate with a force less than a set value, and along both sides thereof along the tip rotation trajectory of the door body. In an automatic revolving door in which arc-shaped door frames are disposed to face each other, a door switch including a touch switch or the like attached to a part of each of the doors, and an outer edge and a lower end of each of the doors. A door pinch detection sensor consisting of a tape switch and the like which are continuously attached, and each of which is electrically connected to the door switch and the door pinch detection sensor, and generates different pulse signals according to the detection signals of the door switch and the door pinch detection sensor. Out A pulse generator that is electrically connected to the pulse generator and emits light in response to a different kind of pulse signal from the pulse generator; A photoelectric sensor for detecting light emission, interposed between a rotating disk attached to the rotating column and a part on the ceiling side, or disposed in a controller described later to detect a rotation angle of the door body. A door body rotation angle detecting means, a drive motor connected to the rotating column to rotate the door body, and to prevent reverse rotation of the door body by a braking force thereof; a drive motor built in the drive motor; An encoder for detecting a rotation speed, a rotation position, a forward / reverse rotation direction, and the like; and the photoelectric sensor, the door body rotation angle detecting means and an encoder, respectively, electrically connected to the door switch from the photoelectric sensor. The drive motor is driven by the detection signal of the switch to rotate the door at the set speed, or the drive motor is rotated from the position where the door is rotated by 180 ° by the detection signal from the door rotation angle detection means. While decelerating the rotation of the door body, the drive motor is stopped at the position where the door body has rotated 270 °, and the door body is stopped at the door stop position. When the pressing force on the door is released when the pressing force is greater than the braking force and the pressing force on the door is released, the drive motor is driven to rotate forward by the detection signal from the encoder, and the door rotates forward at a low speed to the door stop position. Or further stop the door body by urgently stopping the drive motor according to the detection signal of the door pinch detection sensor from the photoelectric sensor, and then slightly reversely rotate the drive motor at low speed to slightly move the door body. An automatic revolving door comprising a controller that rotates only in the reverse direction.