JP5392944B2 - Opening and closing body device - Google Patents

Description

  The present invention relates to an opening / closing body device such as a shutter device installed in an opening of a construction / structure, and in particular, an opening / closing body device capable of optimizing a lower limit stop position when the opening / closing body descends by its own weight and electric power. About.

  Conventionally, opening / closing body devices such as shutter curtains installed at the opening of construction and structures including buildings such as houses, buildings, factories, warehouses, garages, etc. are installed above the opening and move in the descending direction. To close the opening. As such an opening / closing body device, there is an electric shutter device configured to perform an ascending operation and a descending operation of a shutter with an electric motor. This type of shutter device automatically opens and closes open / closed bodies in order to minimize the spread of fire and damage to other buildings in the event of an emergency such as a fire or power outage that has occurred in a building or neighborhood. It is closed. At this time, there are those that electrically close the opening / closing body and those that close the opening / closing body by its own weight.

In an electric shutter device that can control the lifting and lowering of the opening / closing body electrically, a braking device is provided in an opening / closing device that can manually operate the opening / closing operation of the opening / closing member using a button switch or the like. The opening and closing body is held in an open state by restricting the free rotation of the machine. In an emergency, the brake state by the braking device is released and the opening and closing body can be lowered by its own weight.
As such an opening / closing body device, the one disclosed in Patent Document 1 is known.

Japanese Patent Laid-Open No. 11-324539

  The conventional opening / closing body device senses the position of the shutter curtain based on the information of the limit switch, as described in Patent Document 1, and the shutter curtain is moved to a predetermined lower limit after a predetermined time has elapsed since the limit switch sensed. Stopped in position. However, in the case of an opening / closing body device equipped with an electric motor as described above, the shutter curtain may be lowered by its own weight or may be lowered electrically. Such an opening / closing body device includes a motor unit serving as a power source on the winding shaft of the shutter curtain, and a brake mechanism that brakes rotation by the motor unit. Power transmission means is provided on one end side of the drive shaft of the motor unit, and the rotational force of the drive shaft is transmitted to the take-up shaft. On the other hand, a substantially disc-like brake shoe is provided on the other end side of the drive shaft so as to receive a braking force from the brake mechanism.

  The brake mechanism includes a brake shaft arranged so as to be aligned substantially linearly with respect to the drive shaft of the motor unit, a brake drum fixed to the brake shaft and detachably contacting the brake shoe, and the brake drum A coil spring that urges the brake shoe, an electromagnetic solenoid that attracts the brake drum against the urging force of the coil spring, and a manual separation of the brake drum from the brake shoe against the urging force of the coil spring Lever member. That is, as a method for releasing the braking state of the brake mechanism, an electrical release method using an electromagnetic solenoid and a mechanical release method using a lever member are provided.

When the opening / closing body device in the fully open state receives the disaster prevention signal, the automatic closing device swings the lever member by the power supply from the control unit (not shown), and the brake mechanism is released from the braking state. As a result, the brake drum is forcibly removed from the brake shoe, the drive shaft of the motor unit is in a freely rotatable state, the winding shaft is also in a freely rotatable state, is wound around the winding shaft, and is fully open. The shutter curtain is drawn out by its own weight and starts to close. On the other hand, when opening / closing control of the shutter curtain using the motor unit, the electromagnetic solenoid is energized to release the braking state of the brake mechanism and the drive shaft is allowed to rotate.
Therefore, when the shutter curtain is stopped after the elapse of a predetermined time after the limit switch senses, the descent speed is different between the weight drop and the electric descent, and the brake mechanism is different between the weight drop and the electric descent. The operation method is different depending on the mechanical method and the electrical method, and the brake application timing (lower limit stop timing) is slightly different depending on the usage form of the opening / closing body device. Although the lower limit position does not change, it may be desired to adjust the slackness of the shutter curtain after closing by changing the lower limit stop position from the viewpoint of the opening / closing body device. For example, in order to increase the airtightness at the time of disaster prevention, the shutter curtain and floor surface etc. can be applied by applying a brake with the stop time delayed more than the normal closed state at the time of disaster prevention. There is a case where it is desired to increase the degree of adhesion with. From the standpoint of the user of the opening / closing body device, this means that the stop timing of the shutter curtain operation is slightly different between the disaster prevention and the normal time even if the shutter curtain closing end reaches the lower limit position. It is to be. In addition, although the above-mentioned description is about the example from which a closed state differs, you may make it become the same closed state at the time of disaster prevention and normal time.

  This invention is made in view of the above-mentioned point, and provides the opening-closing body apparatus which can be stopped in an appropriate closed state at the same lower limit position in both cases of the weight drop and the electric drop. Objective.

  The first feature of the opening / closing body device according to the present invention is that the opening / closing body means provided to open and close the opening, the self-weight closing process of closing the opening by lowering the opening / closing body by its own weight, and Control means for controlling an electric closing process for lowering the opening / closing body means electrically to close the opening, and a time until the opening / closing body means is stopped after receiving a signal from the lower limit switch means And a control means for controlling the opening / closing body means to be stopped in an appropriate closed state at the same lower limit position by making the difference between the self-weight closing process and the electric closing process.

  Opening and closing means means an opening and closing member such as a shutter curtain that opens and closes doorways and windows, or openings such as internal passages and spaces in buildings, houses, factories, warehouses, etc. Composed. When the opening / closing body means is a shutter curtain, for example, it is housed in the upper part of an opening of a building or the like, and the lowering speed differs depending on whether it is closed by its own weight or electrically closed. Usually, when a predetermined time has elapsed since the signal from the lower limit limit switch means was received during the closing operation, the switch curtain is de-energized to stop the lowering operation of the shutter curtain. In the equipment, the descent speed during the electric close operation is slower than the descent speed during the self weight close operation, and the brake mechanism is released by the mechanical method when the self weight is lowered, and the electric brake is applied during the electric descent. Since the mechanism was released, each lower limit stop position was slightly different. Therefore, in the present invention, the predetermined time from when the signal from the lower limit switch means is received until the energization to the switch is cut off is set to a different value between the self-weight closing operation and the electric closing operation. I made it. In this way, by setting the predetermined time to a value corresponding to the lowering speed and the release method of the brake mechanism, an appropriate closed state can be obtained at the same lower limit position even during the self-weight closing operation or the electric closing operation. Thus, the shutter curtain can be stopped.

  A second feature of the opening / closing body device according to the present invention is the opening / closing body device according to the first feature, wherein the control means receives the signal from the lower limit switch means and then turns the opening / closing body means. A predetermined time until stopping is prepared in advance as a parameter value at the time of the dead weight closing process and the electric closing process, and the parameter value can be set according to the value of the dip switch means. This is because the predetermined time from the reception of the signal from the lower limit switch means to the disconnection of the power to the switch is set in advance as parameter values for those during the self-weight closing process and those during the electric closing process, respectively. This parameter value is prepared so that it can be easily set according to the value of the dip switch means, for example, a value of 0 to 16.

  According to a third feature of the opening / closing body device according to the present invention, in the opening / closing body device according to the second feature, the parameter value includes a lowering speed of the opening / closing body means and a brake releasing method during the dead weight closing process. It is preset based on the lowering speed of the opening / closing member means and the brake releasing method during the electric closing process. The lower limit switch is used in this invention because the lowering speed and the brake mechanism release method at the time of the electric closing operation and the self-weight closing operation of the shutter curtain, which is the opening / closing member means, are different depending on the difference in the specification and configuration of the opening / closing member device. The predetermined time from when the signal from the means is received until the power to the switch is cut off is set based on the actual lowering speed of the shutter curtain as the opening / closing means and the brake releasing method.

  According to the present invention, there is an effect that the opening and closing body can be stopped in an appropriate closed state at the same lower limit position in both cases of the weight drop and the electric drop.

It is a figure which shows schematic structure of the shutter apparatus provided with the automatic closing apparatus which concerns on this invention. It is a table showing the time parameter from when the contact of the lower limit switch is opened until the shutter curtain is stopped at the lower limit position (the power supply to the switch is turned off).

  Hereinafter, preferred embodiments of an automatic closing device according to the present invention will be described in detail with reference to the drawings. In this embodiment, a shutter device will be described as an example to which an automatic closing device is applied. The shutter device houses a shutter curtain formed by connecting a large number of strip-like slats in a wound state above the building opening, and closes the building opening by being rewound. FIG. 1 is a diagram showing a schematic configuration of a shutter device provided with an automatic closing device according to the present invention.

  This shutter device is provided in an opening of a building / structure. Basically, the shutter case 1, the shutter curtain 2, the guide rails 3, 4, the winding shaft 5, the chain 6, and the opening / closing device 7 such as a motor. The control device 8 includes an automatic closing device 12, an operation switch 9, and an obstacle sensor 11. In the shutter device, the opening / closing machine 7 is operated according to the operation of the operation switch 9 to control the opening / closing. In this shutter device, the shutter curtain 2 is held in the open state wound around the winding shaft 5 by a mechanical holding mechanism (not shown). When the emergency signal BS indicating the occurrence of fire or the like is input from the outside to the control device 8 in this open state, the automatic closing device 12 mechanically releases the holding state of the holding mechanism, so that the shutter curtain 2 naturally descends by its own weight and automatically closes the opening. Note that the motor unit and the brake mechanism (electrical and mechanical) have the same configuration as described in the problem to be solved, and a description thereof will be omitted.

  The guide rails 3 and 4 are provided on both ends of the opening of the building so as to be in contact with both ends of the shutter curtain 2, and have a U-shaped guide groove extending from the lintel to the floor surface. It is comprised with the metal member which has. The shutter curtain 2 moves up and down along the guide grooves of the guide rails 3 and 4 to open and close the opening. The winding shaft 5 is rotatably provided at both ends of the shutter case 1 and winds up or rewinds the shutter curtain 2. The chain 6 connects a main sprocket provided on the rotary shaft of the opening / closing machine 7 and a driven sprocket provided on the rotary shaft of the winding shaft 5. Accordingly, the rotational driving force of the opening / closing machine 7 is transmitted to the winding shaft 5 side via the chain 6, and when the opening / closing machine 7 rotates, the winding shaft 5 rotates via the chain 6, and the shutter curtain 2 is opened and closed. Is to be controlled.

  The control device 8 has a microcomputer configuration, and is supplied with power via a power supply line AC. The control device 8 controls the rotation of the switch 7 based on a control signal corresponding to the operation state of each operation button on the operation switch 9, or the automatic closing device 12 based on the obstacle sensor 11 and the emergency signal BS. To control the holding mechanism. That is, the control device 8 controls the stop of the lowering operation of the shutter curtain 2 by opening and closing the relay contact that operates in response to the input of the detection signal and the return signal from the obstacle detector 11 when the shutter is normally opened and closed. When the emergency signal BS is generated, the stop of the shutter curtain 2 during the automatic lowering is controlled in response to the input of the detection signal and the return signal from the obstacle sensor 11.

  The operation switch 9 has an up button 9A, a stop button 9B, and a down button 9C as control switches corresponding to each operation of opening and closing, and outputs a control signal corresponding to the operation state of each button to the control device 8. . The automatic closing device 12 incorporates an upper limit switch and a lower limit switch that detect the rotational position of the switch 7, that is, that the shutter curtain 2 has reached the upper limit and lower limit positions. The upper limit switch and the lower limit switch maintain an on / off state according to the rotational position of the switch 7.

  Therefore, in this opening / closing body device, when the raising button 9A for controlling the opening / closing operation is operated like a normal shutter device, the opening / closing machine 7 is driven in the opening direction, and the shutter curtain 2 is raised (opened). It becomes like this. When the shutter curtain 2 rises (opens) and reaches the upper limit position, the contact of the limit switch for the upper limit opens (becomes off), so that the power to the switch 7 is cut off, and the shutter curtain 2 moves to the upper limit position. Stop at. Conversely, when the lowering button 9C is operated, the switch 7 is driven in the closing direction, the shutter curtain 2 is lowered (closed), and when the lower limit position is reached, the contact of the lower limit switch is opened (the OFF state and Therefore, the energization to the switch 7 is cut off, the energization to the electromagnetic solenoid of the holding mechanism is also cut off, and a braking state is entered, and the shutter curtain 2 stops at this lower limit position.

  On the other hand, when receiving the emergency signal BS such as a fire occurrence signal, the automatic closing device 12 mechanically releases the braking operation of the opening / closing device 7 and automatically closes the shutter curtain 2 with its own weight. At the time of this automatic closing, the opening / closing machine 7 rotates via the winding shaft 5 in accordance with the lowering operation of the shutter curtain 2. At this time, the lower limit switch built in the automatic closing device 12 maintains the on / off state according to the rotational position of the opening / closing device 7. Accordingly, at the time of automatic closing, when the shutter curtain 2 reaches the lower limit position, the contact of the lower limit switch is opened and turned off, the automatic closing operation is terminated, and the power supply to the switch 7 is cut off. The braking operation is mechanically effective, and the shutter curtain 2 stops at the lower limit position. At this time, when the contact of the lower limit switch is turned off, a fully closed signal indicating that the automatic closing by the shutter curtain 2 has been completed is notified to the disaster prevention center, etc., and it is confirmed that the opening / closing body device is fully closed. It has come to be. As the lower limit switch, a type that senses when the shutter curtain 2 passes may be provided near the lower limit of the guide rails 3 and 4.

  FIG. 2 is a table showing parameters of time from when the contact of the lower limit switch is opened until the shutter curtain is stopped at the lower limit position (the power supply to the switch is turned off). As described above, when the shutter curtain 2 is lowered by its own weight and when it is lowered by electric power, the lowering speeds are different from each other, so that the switch 7 is de-energized after the contact of the lower limit switch is opened. By setting the dip switch DIPSW, the time up to can be changed as appropriate. That is, different values are set for the dead weight closing process and the electric closing process. For example, it is possible to select a parameter for the time until stopping at the lower limit position, in other words, the time until the brake is applied, which is set in the storage unit such as the storage unit of the control device 8 in advance, using a selection unit such as a dip switch. Configured. Further, the parameter value is configured so as to be easily set according to a value of 0 to 16, for example. Thus, setting with the dip switch or the like can be performed more easily than adjusting the closed state with the limit switch when the opening / closing body device is installed. In this parameter table, the time of 0.1 second increases every time the DIP switch number increases by 1 when the weight falls, and the time of 0.2 seconds increases every time the DIP switch number increases by 1 during the electric drop. It is set to increase. The numerical value in FIG. 2 is generally a numerical value corresponding to the fact that the speed ratio of the shutter curtain between the weight drop and the electric drop is about 2: 1. Note that this numerical value is an example, and the value can be changed as appropriate depending on the structure and specifications of the opening / closing body device and whether the holding mechanism is electrically released or mechanically released. In this embodiment, the case where the time parameter is changed and set by one dip switch has been described. However, a dip switch corresponding to each of the weight drop and the electric drop is provided, and the lower limit stop time can be set separately. It is good. Note that a parameter may be specified by using a jumper line instead of the dip switch.

  In the above-described embodiment, the shutter curtain composed of slats as the opening / closing body has been described as an example. However, the opening / closing body is a grill curtain, a sheet curtain, a panel curtain, a curtain that combines a slat and a sheet, or the like. There may be.

  Although the shutter device has been described as an example of the opening / closing device, the braking device according to the present invention can be applied to an opening / closing device having another structure such as a screen device or a smoke-proof banner device. In addition to buildings, this switchgear can be used as an opening part such as an entrance / exit part of a structure such as an underground mall, a tunnel, a vehicle, a ship, or an aircraft, an opening part of a window, an opening space for forming a disaster prevention zone, etc. Good.

DESCRIPTION OF SYMBOLS 1 ... Shutter case 2 ... Shutter curtain 3, 4 ... Guide rail 5 ... Winding shaft 6 ... Chain 7 ... Opening / closing machine 8 ... Control device 9 ... Operation switch 11 ... Obstacle detector 12 ... Automatic closing device

Claims (6)

Opening and closing body means provided to open and close the opening;
The brake mechanism in the braking state is released and the opening / closing member means is lowered by its own weight to close the opening, and the brake mechanism in the braking state is released and the opening / closing member means is electrically operated . A control means for controlling an electric closing process for closing the opening by lowering with an opening / closing machine , corresponding to different lowering speeds of the opening / closing body means at the time of the self-weight closing process and the electric closing process, the time from the reception of the signal from the lower limit switch means to stop said closing body means by the braking of the brake mechanism, by varying respectively when the own weight closing process and at the time of the electric closing process, the An opening / closing body device comprising: control means for controlling the opening / closing body means to be stopped in an appropriate closed state at the same lower limit position. 2. The opening / closing body device according to claim 1, wherein the control means determines a predetermined time from when a signal is received from a lower limit switch means to when the opening / closing body means is stopped during the self-weight closing process and the electric motor. An opening / closing body device characterized in that the parameter value is prepared in advance as a parameter value at the time of closing processing, and the parameter value can be set according to a value of a dip switch means. 3. The opening / closing body device according to claim 2, wherein the parameter value includes a lowering speed and a brake releasing method of the opening / closing body means during the dead weight closing process, and a lowering speed and brake releasing of the opening / closing body means during the electric closing process. An opening / closing body device which is preset based on a method. 4. The opening / closing body device according to claim 1, wherein a speed ratio between a lowering speed of the opening / closing body means during the dead weight closing process and a lowering speed of the opening / closing body means during the electric closing process is about 2: An opening / closing body device characterized by being 1. 5. The opening / closing body device according to claim 1, wherein the brake mechanism in the braking state is released by a mechanical method during the dead weight closing process, and is in the braking state during the electric closing process. An opening / closing body device, wherein the brake mechanism is released by an electric method. 6. The opening / closing body device according to claim 1, wherein the control means stops the opening / closing body means at the same lower limit position so as to increase the degree of adhesion between the opening / closing body means and a floor surface. An opening / closing body device characterized by that.

Images