Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means
Reexamination Certificate
2001-01-17
2001-11-27
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
C187S277000, C187S414000, C187S289000
Reexamination Certificate
active
06321877
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a controlling apparatus for an elevator, and more particularly to an arrangement of a control board.
TECHNICAL BACKGROUND
FIG. 10
is a block diagram showing an overall structure of a controlling apparatus for an elevator, which does not require an elevator machine room, as shown in Japanese Patent Application Laid-Open No. Hei. 9-267978. Namely, a control board which has been installed in a conventional machine room is mounted on a car and in one piece with a door drive device that is mounted on the car.
In
FIG. 10
, numeral
1
denotes a hoist way, numeral
2
denotes a car, numeral
3
denotes a main rope, numeral
4
denotes a drive machine disposed within the hoist way for elevating/descending the car
2
through the rope
3
, numeral
5
denotes a traction motor for driving the drive machine
4
, numeral
6
denotes a control panel mounted within a car for performing an operational control of the car
2
, a drive control of the traction motor
5
or the like, numeral
7
denotes a car operation panel mounted on an outer plate of the control panel
6
for registering a car call of destination floor, numeral
9
denotes a door motor for driving car doors
8
, numeral
10
denotes a hall button for registering a hall call, numeral
11
denotes an alternating current power source, and numeral
20
denotes a power receiving unit in which a power receiving terminal of the alternating current power source
11
and junction terminal of cables.
In the structure shown in the drawing, the respective units are connected to each other through a cable
22
for connecting the power receiving unit
20
and the traction motor
5
, a cable
21
for connecting the power receiving unit
20
and the control panel
6
, a cable
23
for connecting the hall button
10
and the power receiving unit
20
and a cable
12
for connecting the door motor
9
and the control panel
6
to thereby enable the control panel
6
to control the respective units. The control panel
6
is provided within the car cabin to thereby dispense with a machine room. Also, it is possible to perform the maintenance of the control panel
6
from the car cabin to thereby attain the saving of the work of installation and maintenance.
However, in the conventional controlling apparatus for which the machine room is dispensed with, since the control panel
6
installed in the car
2
directly drives the traction motor
5
, the cable
22
for the connection with the alternating current power source
11
and the motor drive power cable
21
must be wound between the power receiving unit
20
and the car
2
.
In particular, in the case where the car travel is long or in the case where the car
2
has a large capacity and the drive power flowing through the cables becomes large, the following problem becomes remarkable. Namely, since the drive power cable requires substantially the same length as the car travel because the car
2
rises and descends, and at the same time, durability against repeated bending is required, the cost therefor is increased. Also, in the case where the traction motor
5
is inverter-driven, since a large current having a high frequency is caused to flow through the power cable, there is a fear that the current causes electromagnetic noise.
Also, since the control panel
6
is mounted on the car
2
, the mass of the control panel
6
is added to the car
2
, and in particular, in an elevator using a balance weight, it is necessary to increase the mass of the weight. Also, in addition to the increased mass, in accordance with the increase of the number of the cables, there is a problem in that the inertia efficiency is increased upon the drive of the car and power that is needed for acceleration/deceleration is also increased.
In order to cope with this problem, for example, in Japanese Patent Application Laid-Open No. Hei 11-21036, a main circuit part and a signal control section of the control panel are separated from each other in accordance with functions, the former is disposed in the vicinity of the traction machine and at the same time the latter is disposed inside and outside of the hoist way of the middle floors. According to this technique, the cable for the main circuit may be dispensed with, and also, the increase of the weight of the car may be restricted.
However, this prior art is simply directed to a technology in which the control panel is divided into an administrative control panel (the second control panel) for performing the signal control-that has been conventionally presented and a drive control panel (first control panel) for performing the drive control. Only the administrative control panel which has been installed in the same machine room or the first machine room and the second machine room is simply installed inside and outside of the hoist way of the middle floors. (Incidentally, there are many examples for installing the control panel inside and outside of the hoist way although not further explained.)
Also, recently, there is a description in, for example, Japanese Patent Application Laid-Open No. Hei 9-20470 that the control panel is manufactured to be divided in accordance with functions, after it has been carried into the site, the divided parts are combined, and the wirings are connected through connectors or the like. However, this is a simple technology that the conventional control panel is manufactured to be divided and combined and completely assembled in the site.
Recently, the electronics of the control panel have been developed and a separated control system using a microcomputer in accordance with a function has come to be used. Also, in the conventional control panel for an elevator, in particular, in a control panel for control in accordance with a relay sequence or the like, if the control panel is divided, a large number of signal lines for mutually sending/receiving signals are required. Accordingly, it is impossible to divide the control panel. However, a digital signal transmission system has been developed between microcomputerized electronic units and it is possible to perform the mutual sending and receiving signals even with a small number of signal lines.
Accordingly, the present invention has been made in view of the above-described various factors, and therefore has an object to provide a controlling apparatus for an elevator, provided with a control panel, which, without providing a large integral control panel, may be installed in an empty space around each controlled unit without preparing a special machine room, to be free from a problem in that it is difficult to install the control panel in place, which may enhance a layout property of the units and effectively utilize space in a building, and which may quickly perform control the controlled units while reflecting an actual localized situation.
SUMMARY OF THE INVENTION
A controlling apparatus for an elevator according to the present invention, which is provided with a control panel for controlling various units of the elevator, is characterized in that the control panel is divided into a plurality of divided units in accordance with every control function; and the divided units to be connected or to be controlled are divided into a plurality of unit groups mainly in accordance with a location where the units are disposed, a single or a plurality of divided unit groups composed of divided units having a strong relationship with at least one unit of the unit group are extracted to form a control section, and the control section is disposed in the vicinity of the unit group.
Furthermore, it is characterized in that a transmission system for mutual communication of signals between a plurality of control sections is further comprised.
Furthermore, it is characterized in that the transmission system transmits signals in serial transmission.
Furthermore, it is characterized in that the divided unit group comprises at least one of a divided unit composed of a drive control section for drivingly controlling a drive machine, a divided unit composed o
Leydig , Voit & Mayer, Ltd.
Mitsubishi Denki & Kabushiki Kaisha
Salata Jonathan
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