JPH0711838A - Device for driving revolving door - Google Patents

Abstract

PURPOSE:To provide a revolving door wherein the outside air can be prevented from coming in to reduce power consumption required for indoor air conditioning, and entrance and exit is made possible only by pushing the door lightly even if there is a strong wind and further any user can leave and enter safely. CONSTITUTION:A belt-shaped drive ring 11 comprised of conductive metal is suspended from a beam or ceiling of building through brackets and the like so as to be coaxial with the center of an axis of rotation 1 of a revolving door, and a linear induction motor 12, eddy current type damper 13 for applying braking to the belt-shaped drive ring 11 on the stationary side, and a mechanical braking machine 14 for maintaining a stop state are disposed at predetermined locations in the circumferential direction of the ring 11 on the ceiling section of the door. And when a user pushes an activation lever provided on the door, the door is rotated and circuits for operation, control, etc., are electrically controlled, and the ratio between man power of user and electrical power is set nearly at a ratio 6-8:4-2, whereby users can utilize the revolving door safely and in a natural manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for driving and controlling a revolving door, which uses a linear induction motor using a belt-shaped drive ring and a brake, so that a person can safely enter and exit with a light push. The present invention relates to a drive device for a revolving door that does not continue to rotate or carelessly rotate.

[0002]

2. Description of the Related Art A revolving door is one in which a plurality of glass or acrylic doors are radially mounted on a single rotating shaft that rotates in a certain direction. The door rotates around the axis of rotation, and a person can move in and out by moving according to the rotation speed of the door, and has been conventionally installed at the entrance of a bank or a hotel.

[0003]

The conventional revolving doors described above are economical because they do not use electric power like automatic doors, and the installation of revolving doors can bring a high-grade image to the entrance. While having the effect of
It had the following drawbacks. In other words, once the revolving door turns around, it is difficult for the revolving door to stop rotating due to its inertia. It is difficult for people to come and go. Also, when pressure is applied to both doors centering on the rotation axis at the same time, such as in strong wind, the doors may not rotate, and pressure is concentrated on one door centering on the rotation axis. There was a problem that the door continued to rotate and did not stop.

The present invention solves the above problems, prevents the entry of outside air, reduces the power consumption required for indoor air conditioning, and allows the user to enter and exit with a light push even in strong winds. The purpose of the present invention is to provide a revolving door drive and a braking device that can be safely accessed.

[Means for Solving the Problems]

As a result of various studies in order to achieve the above-mentioned object, the inventor has paid attention to controlling the power of the revolving door from the power of the human power of the user to the electric power of the motor, and the safety is improved. It has been found that it is difficult to electrically control the rotation of the door while ensuring the property, and a drive device and a control device that can instantaneously respond to the unexpected behavior of the user are required. Therefore, the inventor has developed a strip-shaped drive ring made of a conductive metal attached to the upper part and / or the lower part of the revolving door, or a strip-shaped drive ring made of a conductive metal in which permanent magnets of predetermined dimensions are arranged at predetermined intervals on the surface. , It is possible to quickly start the rotation of the door by driving it with a linear induction motor. Also, the belt drive ring is braked by the braking by the reverse rotation connection of the motor and the brake by the action of eddy current. By doing so, we have found that it is possible to sufficiently cope with instantaneous braking. In addition, the inventor
A sensor is installed in the required part of the revolving door, and fixed position, starting,
Drive detection, discharge control, etc. are adopted.For example, the door does not rotate unless a predetermined activation bar is pressed, and the door gradually stops when the hand is released from the activation bar. The power is controlled electrically, and the ratio of the power is controlled by the human power of the user to the electrical power of 6 to 8 to 4-2.
The present invention has been completed by confirming that the user can use the revolving door more safely and naturally by adjusting the degree.

That is, according to the present invention, the strip-shaped drive ring made of a conductive metal is attached to at least one of the upper and lower ends of the revolving door or to the building side opposite thereto, and the strip-shaped drive ring is not contacted. At least one linear induction motor that drives the belt-shaped drive ring and is composed of an arc-shaped magnetic plate facing each other and a bow-shaped stator having a slot on the magnetic plate facing surface, and is in non-contact via the belt-shaped drive ring. At least one eddy current type braking device that is opposed to each other and is composed of a pair of arc-shaped magnets having different magnetic poles, and brakes the belt-shaped drive ring by the action of eddy current;
A drive / braking mechanism comprising at least one mechanical brake that mechanically sandwiches and stops the belt-shaped drive ring with a required member is provided at the upper and lower ends of a revolving door having the belt-shaped drive ring or a position facing the building. A drive device for a revolving door, which is disposed at the upper and lower ends of a certain building or revolving door. The present invention is also a drive device for a revolving door, characterized in that, in the device having the above-mentioned structure, a belt-shaped drive ring made of a conductive metal, on which permanent magnets of required dimensions are arranged at predetermined intervals on the surface.

Further, according to the present invention, in the apparatus having the above-mentioned structure, a means for confirming the presence of a person near the entrance of the revolving door and / or in the door box, whether or not the person pushes the activation bar arranged on the door. To confirm that a person has moved from the entrance side while pressing the activation bar arranged on the door, and to confirm that a person or object is sandwiched between the revolving door and the wall. A means for detecting, a means for confirming that the person has moved to the exit side while pressing the activation bar arranged on the door, and a means for confirming that the person has released the hand from the activation bar arranged on the door. , A means for confirming the presence of a person in the vicinity of the exit of the revolving door and / or in the door sill, and a linear induction motor, an eddy current brake, in accordance with the confirmation by each means and a predetermined program, Control mechanical brakes It is driving device for a rotary door and said Ukoto

[0008]

The operation of the present invention will be described below with reference to the drawings. 1 and 2 are a perspective explanatory view and a cross sectional explanatory view showing an example in which a rotary door driving device according to the present invention is attached to a rotary door, and FIG. 3 is an embodiment of a rotary door driving device according to the present invention. It is isometric view explanatory drawing which shows a mode. See also FIG.
FIG. 5 is a cross-sectional explanatory view showing another form of the belt-shaped drive ring that constitutes the drive device for the revolving door according to the present invention, and FIG. 5 is a front view showing an example in which permanent magnets are arranged on the surface of the belt-shaped drive ring. It is a figure. FIG. 6 is a top view of the revolving door showing the location of the sensor, and FIG. 7 is a control block diagram showing an example of control of the revolving door driving device according to the present invention. In FIG. 1 and FIG. 2, reference numeral 1 denotes a rotary shaft located at the center of the rotary door, which is rotatably mounted on a shaft (not shown) installed upright here through a bearing, and is arranged on the rotary shaft 1 in a radial pattern. A number of door frames 2 are arranged, and a door box divided into four is formed in the revolving door. The door frame 2 is formed of a predetermined rectangular frame, and the glass 3 is provided in the frame here.
Is fitted. Further, each door frame 2 is provided with an activation bar 4 which is manually pushed by a person. The ceiling part 5 of the revolving door is fixed on the four door frames 2, and the revolving door driving device 10 according to the present invention is mounted on the upper surface of the ceiling part 5. In addition, 6 is a wall of a building.

As shown in FIG. 2, a belt-shaped drive ring 11 made of a conductive metal is suspended from a beam or ceiling of a building through a bracket or the like so as to coincide with the center of the rotary shaft 1 of the revolving door. As shown in FIG. 3, a linear driving motor for driving (hereinafter referred to as LIM) is provided on a ceiling portion 5 of the revolving door at a predetermined opposing position in the circumferential direction of the belt-shaped driving ring 11.
12, an eddy-current brake 13 for braking the fixed-side belt-shaped drive ring 11, a revolving door decelerated by braking such as an eddy-current brake 13 is completely stopped, and the stopped state is maintained. Mechanical brakes 14 are arranged respectively. Reference numeral 15 in the drawing denotes a power receiving slip ring for supplying electric power to the LIM 12, the eddy current type brake 13, the mechanical brake 14 and the like. Here, the strip-shaped drive ring 11 is provided on the beam or ceiling of the building, and the LIM 12 and the eddy current type brake 1 are provided.
3 and the mechanical brake 14 are provided on the ceiling 5 of the revolving door, but conversely, the drive and braking mechanism is provided on the ceiling of the building, and the belt-shaped drive ring 11 is provided on the ceiling 5 of the revolving door. Also has the same effect.

The LIM 12 is arranged at predetermined positions (four positions in FIG. 3) in the circumferential direction of the belt-shaped drive ring 11, and has a bow-shaped magnetic plate that follows the shape of the ring and a slot on the surface facing the magnetic plate. The arc-shaped stators having the above are arranged so as to face each other while ensuring a gap for the belt-shaped drive ring 11 to pass without contact. The eddy current type braking device 13 is arranged at predetermined positions (two positions in FIG. 3) in the circumferential direction of the belt-shaped drive ring 11 and faces them in a non-contact manner via the belt-shaped drive ring 11.
It has a structure in which a pair of arcuate magnets having opposite magnetic poles face each other. The mechanical brake 14 is arranged at predetermined positions (two positions in FIG. 3) in the circumferential direction of the belt-shaped drive ring 11, and is configured to mechanically sandwich the belt-shaped drive ring 11 with a required member and stop the belt-shaped drive ring 11.

In addition to the above-mentioned strip-shaped drive ring made of a conductive metal, the strip-shaped drive ring is made of a conductive metal in which permanent magnets of predetermined dimensions are arranged at predetermined intervals on the surface of the drive ring as shown in FIG. Rings can be used. In the belt-shaped drive ring made of a conductive metal, the drive by the LIM is transmitted to the belt-shaped drive ring with a slight delay.
When a strip-shaped drive ring made of a conductive metal, in which permanent magnets of a predetermined size are arranged on the surface at predetermined intervals, is used, the LIM and the strip-shaped drive ring drive synchronously, and the LIM acts as a so-called linear synchronous motor (LSM). , The belt drive ring can be driven more quickly. The strip-shaped drive ring has, for example, a configuration in which holes of a required size are formed at equal intervals on the surface of a strip-shaped drive ring 11 made of a conductive metal, and permanent magnets 21 of the same size are fitted into the holes (FIG. 4).
a), a configuration in which a recess having a required shape is provided on the surface of the belt-shaped drive ring 11, and the permanent magnet 21 is fitted into the recess (FIG. 4).
b) In addition, a configuration in which one or both surfaces of the belt-shaped drive ring 11 is fitted with a permanent magnet 21 of a required size (FIG. 4).
c, FIG. 4d) etc. are preferred. As the permanent magnet, a known permanent magnet such as a sintered magnet such as a ferrite magnet, an Sm-Co based magnet, or an R-Fe-B based magnet, or a bonded magnet can be used. Further, as the conductive metal, Al, C
u and the like. The diameter, height, thickness, etc. of the belt-shaped drive ring may be appropriately selected according to the size, height, weight, etc. of the revolving door on which the belt-shaped drive ring is mounted. Further, in order to control the rotation speed of the belt-shaped drive ring when the LIM and the belt-shaped drive ring are synchronously driven by using the belt-shaped drive ring made of a conductive metal in which permanent magnets of a predetermined size are arranged on the surface at predetermined intervals. In addition, it is preferable to control the drive of the LIM with an inverter.

As described above, the LIM is provided with a bow-shaped magnetic plate that follows the shape of the belt-shaped drive ring, and a bow-shaped stator having a slot on the surface facing the magnetic plate, without passing through the belt-shaped drive ring. Known LIMs such as LIMs that are arranged opposite to each other while securing a gap only can be adopted. Further, in FIG. 3, four LIMs are arranged,
The number, arrangement, shape, configuration, output, etc. of LIMs are preferably selected according to the diameter, height, and thickness of the belt-shaped drive ring and the size, height, weight, etc. of the revolving door. Furthermore, when braking the rotation of the belt-shaped drive ring by the reverse rotation connection of the LIM, when using a plurality of LIMs, it is possible to reversely connect all the LIMs or only some of the LIMs. it can.

As the eddy current braking device, the eddy current braking device composed of a pair of arc-shaped magnets, which are opposed to each other via the belt-shaped drive ring in a non-contact manner, and each opposing surface has different magnetic poles, as described above, or the like. A known eddy current brake can be used.
The arc-shaped magnet used for the eddy current brake may be a permanent magnet or an electromagnet, and it is also effective to change the gap between the pair of magnets. If used, a superior braking ability can be exhibited. In FIG. 3, the eddy current brake is arranged at two places, but like the above-mentioned LIM,
The number, arrangement, shape, configuration, etc. are preferably selected according to the diameter, height, thickness of the belt-shaped drive ring, the size, height, weight of the revolving door, and the output of the LIM.

The mechanical brake may be other than the above as long as it has a structure that can be stopped and fixed by sandwiching the belt-shaped drive ring, and a necessary member for sandwiching is generally a vehicle brake or the like. Sliding resistors and elastic bodies used are preferable. In addition, it is preferable to drive the pinching operation of the mechanical brake with a voice coil motor because the belt drive ring can be more quickly braked and released. Similar to the eddy current brake, the mechanical brake is also arranged in two places in FIG. 3, but like the LIM, the number, arrangement, shape, structure, etc. are the diameter of the belt drive ring, It is preferable to select the height, thickness, size, height, weight, etc. of the revolving door.

Here, each operation of starting, driving, braking and stopping the revolving door will be described. First, the LIM 12 is started by the electric power supplied from the power receiving slip ring 15, and the belt-like driving fixed by the driving of the LIM 12. The revolving door starts rotating around the ring 11 in a certain direction. Then, as the rotation speed of the revolving door becomes faster, an eddy current is generated in the belt-shaped drive ring 11 by the eddy current braking device 13, and the rotation of the belt-shaped drive ring 11 is braked by the eddy current, so that the revolving door is kept constant. Continue spinning at speed. During braking, the gap between the magnets of the eddy current brake 13 is narrowed, or when the magnet of the eddy current brake 13 is an electromagnet, the amount of electricity supplied is increased to reduce the eddy current of the belt drive ring 11. While increasing the braking force on the belt-shaped drive ring 11, the connection of the electric power supplied to the LIM 12 is reversely connected (reverse phase) to generate a force for rotating the belt-shaped drive ring 11 rotating in a constant direction in the reverse direction. Give a belt drive ring 1
Braking 1 In order to further complete the stop, power is supplied from the power receiving slip ring 15 to the mechanical brake 14 to move a required member of the mechanical brake 14, and the belt-shaped drive ring 11 is sandwiched by the required member. By completely stopping, the revolving door stops.

Sensors installed in the required portions of these operations of the drive unit 10 detect the user, and control the doors to be driven and braked by the division detection method such as fixed position, start-up, drive and discharge. In addition, the power ratio is set to about 6 to 8 to 4 to 2 for the human power to the electric power of the user so that the user can use the revolving door more safely and naturally. More specifically, as shown in FIG. 6, the sensor is an infrared light sensor in which a light emitting unit and a light receiving unit are provided on the revolving door ceiling or the like. In the connected control device, S ₁ is near the entrance of the revolving door and / or Confirm the presence of people in the door,
S ₂ confirms that a person has moved from the entrance side while pushing the activation bar 4 arranged on the door, and S ₃ moves to the exit side while pushing the activation bar 4 arranged on the door. and confirms that have been, also, S ₄ is intended to confirm the existence of human in the outlet near and / or door squares.
Further, the activation bar 4 provided on each door frame 2 is provided with a pressure sensor or the like for confirming whether or not a person presses the door bar, and after releasing the hand, the start bar 4 is further provided.
Is provided with a pressure sensor for detecting that a person or an object is sandwiched between the wall 6 and the arc-shaped wall 6. In addition to the infrared light sensor, any known sensor can be used for each of the sensors S ₁ to S ₄ as long as the above-mentioned confirmation is possible. In the case of an infrared light sensor, it is possible to determine the difference between a person and an object, and therefore, it is possible to program it so as not to start when the existence of the object is confirmed.

Firstly the driving unit 10 is originally a freely even in left or right rotation, here a counterclockwise only in FIG. 6, clockwise consists configuration without Limit your being mechanically locked, also, S ₁ from when there is no input for each sensor of the confirmation signal and start pressing signal of the bar 4 in S _4, the four door frame 2 is mechanical system to stop in any position P ₄ from P ₁ in FIG. 6 Motivation 14 is activated and the revolving door remains stationary. When a person enters near the entrance of the revolving door or inside the door box, the sensor S ₁ confirms the existence of the person or the object,
Further, when the presence of a person is confirmed by the infrared reflected light, the LIM 12 of the drive unit 10 becomes standby, and when the person pushes the activation bar 4 to turn the door frame 2, the LIM 12
Start and rotate the revolving door. Start bar 4 here
If you press and then immediately release it, the revolving door maintains its rest position. When a person pushes the start bar 4 to turn the door frame 2 faster, an eddy current is generated in the belt drive ring 11 by the eddy current brake 13 as the rotational speed becomes faster, and the eddy current drives the belt drive. The rotation of the ring 11 is braked and the revolving door tries to maintain a constant speed. When an abnormal increase in speed is detected, the mechanical brake 14 operates to maintain a constant speed.

The sensor S ₂ detects that the person is moving from the entrance side while pressing the activation bar 4, and the rotation is continued while the person is pressing the activation bar 4. At this time, as soon as the pressure sensor provided in each door frame 2 detects that a person or an object is sandwiched between the door frame 2 and the arcuate wall 6, the LIM
12 is stopped, the mechanical brake 14 is operated, and the revolving door is stopped. Further, the sensor S ₃ confirms that the person has moved to the exit side while pressing the activation bar 4, and when the person releases the activation bar 4, the eddy current type brake 1
3 is actuated to decelerate the rotation of the revolving door, and the door frame 2 which was initially at the position P ₁ is rotated from the position P ₂ to the position P ₃ and stopped. However, if the sensor S ₄ confirms the presence of a person in the vicinity of the exit and / or in the door box, the eddy current type brake 13
Is operated to decelerate, and in an emergency such as when a person is lying down, the mechanical brake 14 is operated to stop the revolving door. Even when the person moves to the exit side and does not let go of the activation bar 4, the revolving door is stopped at the position P ₃ . Here, the case where a person enters from the front P ₁ side and exits to the P ₂ side in FIG. 6 has been described, but the same applies when a person enters from the P ₃ side and exits to the P ₄ side. Even if there is an entrance and exit, according to the above procedure, control detection of fixed position, start-up, drive, discharge etc. Door drive and braking control by a split band system, and the ratio of power to user's human power vs. electrical power 6
It is set to about 8 to 4 to 2 so that the user can use the revolving door more safely and naturally.

[0019]

Example A ceiling is provided at the top of a revolving door body having a diameter of 2030 mm and a total height of 2147 mm, and the diameter is 1
600mm, circumference 5024mm, height 150mm,
An Al belt-shaped drive ring having a thickness of 10 mm was attached to the ceiling of the building and arranged facing the revolving door ceiling.
Four LIMs for driving, two eddy current type braking devices for control, and two mechanical type braking devices are arranged on the revolving door ceiling so as to sandwich the belt-shaped drive ring. The LIM used has an iron core size of 55 × 36 × 210 mm, a volume of 0.4 l, and a pole pitch of 40 mm. Its characteristics are: maximum current = 3.5 A, input current = 0.35 KV
A, power factor = 1, frequency = 50, cycle speed = 4 m / s, load time rate = 50%, thrust / input ratio = 57 N / kW, thrust / weight ratio = 5 N / kg, thrust / volume ratio = 50 N / L, thrust / area ratio = 1731 N / mm. The central axis of the door body having the above-described structure is attached to the door frame, and each sensor is arranged to complete the revolving door having the revolving door driving and control device according to the present invention. The drive and control device of the revolving door sets the ratio of the user's human power to the electric power to 7 to 3, the fixed position, the starting, the driving, the discharging, etc. are in the control detection split band system, and the door is rotated. The speed was set to 5 to 6 rpm according to the walking speed of the user.

Using the above-mentioned revolving door, in addition to just entering and leaving, testing whether the control circuit can secure sufficient safety by not releasing the sensor and changing the walking speed on the way. However, no trouble occurred. We also conducted tests assuming entry and exit in strong winds, but even in strong winds, the door smoothly rotated by simply pressing the door lightly, and after use, it stopped smoothly without continuing to rotate due to wind pressure.

[0021]

EFFECTS OF THE INVENTION According to the present invention, the rotary door drive device according to the present invention does not stop the rotation of the door or the door does not stop when the wind is strong. Since it can be stopped, it is possible to prevent outside air from entering and reduce the power consumption required for indoor air conditioning, and it is possible to enter and exit with a light push even in strong winds. In addition, a sensor is installed in the required part of the revolving door, and a fixed detection, start, drive, discharge, etc. control detection split band system is adopted.
It electrically controls circuits such as drive and control, and controls the ratio of power to human power of user to electrical power of 6 to 8 to 4 to 4.
By setting the number to about 2, the user can use the revolving door more safely and naturally, and it is possible to provide the revolving door that solves all the problems of the manual door while being as easy to use as the manual operation.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view of a revolving door showing an example in which a revolving door driving device according to the present invention is attached to the revolving door.

FIG. 2 is an explanatory diagram of a revolving door showing an arrangement example of a belt-shaped drive ring that constitutes a revolving door driving device.

FIG. 3 is a perspective explanatory view showing a drive device for a revolving door according to the present invention.

4A to 4D are cross-sectional explanatory views showing another embodiment of a belt-shaped drive ring that constitutes the drive device for a revolving door according to the present invention.

FIG. 5 is a front explanatory view showing an example in which permanent magnets are arranged on the surface of a belt-shaped drive ring.

FIG. 6 is a top view of the revolving door showing the location of the sensor.

FIG. 7 is a control block diagram showing an example of control of a drive device for a revolving door according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 rotary shaft 2 door frame 3 glass 4 starting bar 5 ceiling 6 wall 10 drive device 11 belt drive ring 12 LIM 13 eddy current type brake device 14 mechanical brake device 15 power receiving slip ring 21 permanent magnets S ₁ , S ₂ , S ₃ , S ₄ sensor

Claims (3)

[Claims] 1. A bow which is formed by attaching a strip-shaped drive ring made of a conductive metal to at least one of upper and lower ends of a revolving door or a building side opposite to the strip, and the strip-shaped drive rings are opposed to each other in a non-contact manner. At least one linear induction motor, which comprises a magnetic plate in the shape of a plate and an arc-shaped stator having a slot on the surface facing the magnetic plate, and drives the belt-shaped drive ring, and faces each other in a non-contact manner via the belt-shaped drive ring. At least one eddy current type brake consisting of a pair of arcuate magnets whose surfaces have different magnetic poles for braking the belt-shaped drive ring by the action of eddy current, and mechanically sandwiching the belt-shaped drive ring with a required member and stopping it. A drive / braking mechanism including at least one mechanical brake is provided at a position opposite to the upper and lower ends of a revolving door having the belt drive ring or a building. A drive device for a revolving door, which is arranged at the upper and lower ends of an object or revolving door. 2. The drive device for a revolving door according to claim 1, wherein a belt-shaped drive ring made of a conductive metal having permanent magnets of a predetermined size arranged on the surface at predetermined intervals is used. 3. A means for confirming the presence of a person near the entrance of a revolving door and / or in a door box, a means for confirming whether or not a person pushes an activation bar arranged on the door, and a person is a door. Means for confirming that the person is moving from the entrance side while pressing the activation bar arranged in, a means for detecting that a person or an object is caught between the revolving door and the wall, and a person is arranged on the door. A means for confirming that the person has moved to the exit side while pressing the start bar, a means for confirming that a person has released his / her hand from the start bar arranged on the door, the vicinity of the exit of the revolving door and / or the door It has each means of confirming the presence of a person in a masu, and confirms each means and controls a linear induction motor, an eddy current brake, and a mechanical brake according to a predetermined program. In claim 1 or claim 2 characterized Revolving door drive device described.