JPH04350089A - Elevator door opening/closing mechanism - Google Patents

Abstract

PURPOSE:To disconnect a clutch smoothly without resistance in disconnecting the clutch for closing a door when the door is fully opened. CONSTITUTION:A door 3 is provided at an aperture part 2 of a cage 1 of an elevator. One end of a wire 5 is fixed to the door 3, and the other end of the wire 5 is fixed to a bobbin 4, so the door 3 is opened by rotating the bobbin in a wire 5 winding direction. A worm reduction mechanism 7 and a clutch 8 are provided in a power transmission system between a motor 6 for rotating the bobbin 4 and the bobbin 4. A spring material 9 for closing the door 3 when the clutch 8 is disconnected is provided. A control part A is provided for reversely rotating the motor 6 only for an instance for disconnecting the clutch 8 when the door is fully open.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door opening/closing mechanism installed in ordinary households.

0002

2. Description of the Related Art Conventional elevators are commercial elevators in which the doors of the elevator car are opened and closed by a motor through mechanisms such as links and belts. In this way, when closing the door, the motor was used to close the door. On the other hand, various home elevators are currently being proposed, but the current situation is that these home elevators use the door opening/closing mechanism of conventional commercial elevators as is.

0003

[Problems to be Solved by the Invention] However, in the above conventional example, the opening and closing of the door is performed electrically, so during a power outage, the motor does not work and manual opening and closing is not possible, resulting in cans being left in the basket. There is a problem that a backup power source is required to solve this problem, resulting in a problem that the equipment becomes large-scale and costs increase.

[0004] Therefore, in the process of arriving at the present invention, the present inventors
One end of the wire is fixed to the door, the other end of the wire is fixed to the bobbin, and the door is set to open by rotating the bobbin in the direction of winding the wire. By interposing a worm reduction mechanism and a clutch in the power transmission system between the motor and the bobbin, and providing a spring material that closes the door when the clutch is disengaged, the clutch is engaged when opening the door, and the motor opens the door. When the door is fully opened, the motor is turned off and the worm reduction mechanism uses the characteristic that it does not transmit rotation from the output side to maintain the door fully open despite being pulled by the spring material. We devised a door opening/closing mechanism in which the clutch is released when closing the door, and the door is closed using the spring force of the spring material. With this type of mechanism, the force used to close the door is the spring material, so by setting the clutch so that it disengages in the event of a power outage, you can open the door by hand against the spring force of the spring material. It is possible. However, when the clutch is disengaged in the fully open state, the door is pulled in the closing direction by the spring material, so the clutch is strongly engaged in the door closing direction, making it difficult to disengage the clutch. There is a possibility that it may not work properly.

The present invention was invented in view of the above-mentioned problems of the prior art, and its purpose is to allow cans to be opened and closed manually, eliminate the fear of canned goods being left in the basket, and to allow the door to be closed. To provide an opening/closing mechanism for an elevator door which can be locked in an open state with a simple mechanism, and in which the clutch is smoothly disengaged without resistance when the clutch is disengaged to close the door when the door is fully open, and operates normally. It is in.

[0006]

[Means for Solving the Problems] The elevator door opening/closing mechanism of the present invention is a mechanism for opening/closing a door 3 provided at an opening 2 of an elevator car 1, and is a mechanism for opening/closing a door 3 provided at an opening 2 of an elevator car 1. The arranged door 3, the wire 5 whose one end is fixed to the door 3 and the other end is fixed to the bobbin 4 and is wound around the bobbin 4 to move the door 3 in the direction of opening, and the bobbin 4 is connected to the wire. A motor 6 for rotating in the winding direction of the bobbin 5, a worm reduction mechanism 7 and a clutch 8 interposed in the power transmission system between the motor 6 and the bobbin 4, and closing the door 3 when the clutch 8 is disengaged. The clutch 8 is disposed closer to the bobbin 4 than the worm reduction mechanism 7, and a control section A is provided for momentarily rotating the motor 6 in reverse when the clutch 8 is disengaged in a fully open state. By employing such a configuration, the problems of the conventional example described above are solved and the object of the present invention is achieved.

[0007]

[Operation] When opening the door 3, when the motor 6 is driven with the clutch 8 engaged, the drive of the motor 6 is transmitted to the bobbin 4 via the worm reduction mechanism 7 and the clutch 8, and the bobbin 4
The door 3 is opened against the spring material 9 by winding the wire 5, and the power to the motor 6 is stopped while the door 3 is open, and in this state, the spring material 9 Although a force is acting to close the door 3, the worm reduction mechanism 7 is locked in the reverse rotation direction, so the door 3 is maintained in the open state. On the other hand, when closing the door 3, by disengaging the clutch 8, the bobbin 4 can be rotated independently of the motor 6 and the worm reduction mechanism 7, so the spring force of the spring material 9 moves the door 3 in the closing direction. It is closed. In this case, with this door 3 fully open, the clutch 8
Control unit A for momentarily rotating the motor 6 in reverse when turning off the
, the clutch 8 is released from the clutch 8 by the spring material 9, and the clutch 8 is disengaged without resistance. If the clutch 8 is set to be disengaged during a power outage, the door 3 can be opened manually against the spring force of the spring material 9.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail based on embodiments shown in the accompanying drawings. A car 1 is provided between a downstairs and an upper floor so as to be able to go up and down freely, for carrying people and objects at arbitrary positions in the house. The car 1 is moved up and down by a lifting device (not shown) disposed under the floor below the car 1, for example. The car 1 is covered by a jacket 10. As shown in FIG. 8, the envelope body 10 is provided with an elevator elevating space 10a in a part of the building.
By arranging the car 1 in the vertical direction on the elevator platform 0a, the wall of the building constituting the elevator elevator space 10a is covered with the outer shell 10.
Alternatively, an outer shell 10 separate from the wall of the building may be provided on the floor. The outer mantle 10 is provided with an opening 11 at each floor.

[0009] Furthermore, an opening 2 is provided in the front face of the car 1. A door 3 is attached to the opening 2 of the car 1 so as to be openable and closable as shown in FIGS. 1 to 3. In the example,
An upper frame 13 is disposed above the opening 2, an upper rail 12 is attached to the upper frame 12 by a connecting fitting 14, and a movable door 3 is suspended from the upper rail 12. In the embodiment shown in the accompanying drawings, the doors 3 include a main door 3a and a subdoor 3b. Further, the upper rail 12 is composed of a main upper rail 12a and a sub-upper rail 12b. A main horizontal frame 15 is provided at the upper part of the main door 3a, and rollers 16 are provided on the main horizontal frame 15, and the rollers 16 are mounted on the main upper rail 12a so as to be freely movable. Further, a sub-horizontal frame 17 is provided at the upper part of the sub-door 3b, and a roller 1 is provided on this sub-horizontal frame 17.
8, and the rollers 18 are movably mounted on the sub-upper rail 12b. One end of the upper frame 13 projects laterally beyond the top of the car 1, and a bobbin 4 is rotatably attached to the projecting part of the upper frame 13, and one end of the wire 5 is fixed to the bobbin 4. The other end of the wire 5 is fixed to a bracket 19 projecting from the main horizontal frame 15 of the main door 3a. A motor 6 for rotating the bobbin 4 in the winding direction of the wire 5 is further provided near the bobbin 4 at one end of the upper frame 13, and the power transmission system between the motor 6 and the bobbin 4 is shown in the figure. 4. As shown in FIGS. 5 and 6, a worm reduction mechanism 7 and a clutch 8 are interposed. Here, clutch 8
is arranged closer to the bobbin 4 than the worm reduction mechanism 7. The clutch 8 is turned on and off by an electromagnetic solenoid 20. That is, in FIG. 6, when the electromagnetic solenoid 20 is energized, the clutch lever 21 of the electromagnetic solenoid 20 moves to the left to engage the clutch 8, and when the electromagnetic solenoid 20 is de-energized, the clutch lever 21 of the electromagnetic solenoid 20 moves to the right to engage the clutch 8. 8 is turned off. The worm speed reduction mechanism 7 is composed of a worm wheel 7a and a worm 7b. The main door 3a is pulled in the closing direction by a spring member 9, and in the embodiment shown in FIG. One end of the mainspring spring is fixed and wound around the mainspring spring drum 22, and the other end of the mainspring spring is fixed to the bracket 19. The upper frame 13 is further provided with a damper device 23, and in the embodiment shown in FIG. and a magnet 27 provided on the bracket 19.

A pulley support frame 28 having one end protruding beyond the one end of the sub door 3b is provided on the sub horizontal frame 17 at the top of the sub door 3b. A pulley 29 is rotatably attached, and an interlocking wire 30 is routed between the pulleys 29 at both ends. Here, as shown in FIG. 7, a part of the interlocking wire 30 is fixed to a mounting bracket 31 provided on the upper frame 13, and
Another part of the interlocking wire 30 is fixed to a connecting fitting 31 of the main horizontal frame 16. Now, when the main door 3a moves, the connecting fitting 31 moves, so the sub door 3b moves in conjunction with the main door 3a, but in this case, the mechanism is as shown in Figure 7. , when the main door 3a moves the full width of the opening 2 of the car 1, it moves half the full width of the opening 2.

[0011]In order to open the door 3 when the main door 3a and the sub-door 3b constituting the door 3 of the opening 2 of the car 1 are closed, the car 1 must be opened as shown in FIG. By operating the operating means B such as an operating button provided inside the hall or a call button provided on the landing floor, a signal from the operating means B is sent to the control section A, and the control section A controls the motor 6 and the electromagnetic solenoid 20. It is energized. Then, the motor 6 rotates and the clutch 8 becomes engaged, and the rotation of the motor 6 rotates the gear 32 fixed to the bobbin 4 via the worm reduction mechanism 7 and the clutch 8, causing the bobbin 4 to rotate. The wire 5 is wound up, and the main door 3a moves in the opening direction against the spring material 9. As the main door 3a moves in the opening direction, the sub door 3b also moves in the opening direction. A detection means (not shown) detects when the main door 3a or the sub door 3b is in the fully open position.
is detected, and the power to the motor 6 is cut off. In this fully open state, the electromagnetic solenoid 20 continues to be energized to keep the clutch 8 in the engaged state. By the way, when the clutch 8 is in the engaged state, the worm reduction mechanism 7 is interposed in the power transmission system between the motor 6 and the bobbin 4, and the worm reduction mechanism 7 does not originally rotate in reverse rotation on the output side. Because of this mechanism, even if the motor 6 is turned off, the spring force of the spring material 9 will prevent the bobbin 4 from rotating in the opposite direction (
Even if the rotational force that attempts to unwind the wire 5 acts on the output side of the worm deceleration mechanism 7, it does not rotate, and this acts as a stopper mechanism to fully open the door 3 consisting of the main door 3a and the sub door 3b. The state is maintained. By the way, when the main door 3a is in the closed state, the iron piece 26 at the tip of the rod 25 of the cylinder 24 and the magnet 27 provided on the bracket 19 are attracted to each other, and when the main door 3a moves from the closed state to the opening direction, As a result of this movement, the iron piece 26 is attracted to the magnet 27, which causes the rod 25 to be pulled out. When the rod 25 is pulled out to a state where it cannot be pulled out any further, the magnet 27 and the iron piece 26 are no longer attracted to each other, and the main door 3a is pulled out. The rod 25 is moved in the opening direction, and the rod 25 remains in the pulled out state.

Next, when the door 3 is to be closed from the fully open state, by operating the operating means B, a signal from the operating means B is sent to the control section A, and the door 3 is closed under the control of the control section A. It stops energizing the electromagnetic solenoid 20,
In this case, the motor 6 is also energized for a moment, the motor 6 is momentarily rotated in the opposite direction, and then the energization to the motor 6 is stopped again. When stopping the power to the electromagnetic solenoid 20 in this way, the reason why the motor 6 is energized for a moment and then stopped again is to stop the power to the motor 6 with the door 3 fully open. In this state, the spring material 9 applies a rotational force in the direction of reverse rotation of the bobbin 4, so the force of the spring material 9 acts on the engagement portion between the output side of the worm reduction mechanism 7 and the clutch 8. They are strongly engaged, and even if you try to move the clutch 8 to release the engagement between the clutch 8 and the output side of the worm reduction mechanism 7, it will be difficult to release, so first energize the motor 6 for a moment and cause the motor 6 to rotate momentarily in reverse. By slightly rotating the worm reduction mechanism 7 in the opposite direction, the strong engagement described above is released, and by stopping the power supply to the electromagnetic solenoid 20 in this state, the clutch 8 is smoothly disengaged, and the bobbin 4 side The edge between the worm speed reduction mechanism 7 and the stopper mechanism for preventing reverse rotation is cut, and the spring material 9 moves the main door 3a in the closing direction, and as the main door 3a moves in the closing direction, the sub door 3b also moves. By moving in the closing direction, the door 3 consisting of the main door 3a and the auxiliary door 3b is fully closed. Here, as the main door 3a moves in the closing direction, the magnet 27 provided on the main door 3a side hits the iron piece 26 of the rod 25 at a position slightly before the fully closed state, and the main door 3a moves the rod 25. You will have to press it to close it. Then, due to the resistance when the rod 25 is pushed into the cylinder 24, the movement of the main door 3a in the closing direction is slowed slightly before fully closing, and the main door 3a closes slowly. When the door 3 is fully closed, the locking pawl 35 provided on the main horizontal frame 15 is locked by an electromagnetic lock (not shown), thereby locking the door 3 in the fully closed state. .

[0013] Here, if a power outage occurs while a person is riding in the car 1, the power to the electromagnetic lock is stopped and the lock is released, and as a result, the hand is forced against the spring material 9. This allows door 3 to be opened. By the way, the motor for opening and closing the door of a general commercial elevator car has a force of 10 kg or more to close the door, but in the motor without a link mechanism as in the present invention, the force to close the door is 5 kg or less. Therefore, if an obstacle hits the door 3 when the door 3 is closed, the door 3 will push the obstacle due to the weak spring force of the spring material 9, and as a result, a so-called safety shoe will occur. It is no longer necessary to install what is called a

Note that each opening 11 provided on each floor of the mantle 10 has a door 40 consisting of a main door 40a and a sub-door 40b.
is provided, and the main door 40a and the sub door 40b are connected to the opening 1.
It is movably attached to a rail body provided on an upper frame body 41 provided in 1. The main door 40a is pulled in the closing direction by a spring member 9a, and in the embodiment shown in FIG. , one end of the mainspring spring is fixedly wound around the mainspring drum 22a, and the other end of the mainspring spring is provided on the main door 40a.
It is fixed to a. Further, the main door 40a and the sub door 40b are opened and closed in conjunction with a mechanism similar to the opening/closing interlocking mechanism of the main door 3a and the sub door 3b shown in FIG. and,
An inset part 42 that opens vertically and forwardly in the main door 3a
is provided protrudingly, and when the car 1 is located at a predetermined position on each floor of the mantle 10, the fitting portion 4 is inserted into the roller 43 from above and below.
2 fits in. Therefore, basket 1
When the main door 3a moves with the main door 3a positioned at a predetermined position on each floor, the roller 43 is pushed by the fitting part 42 and the main door 40a is moved.
move at the same time, and the main door 40a moves, so the sub door 4
0b moves, thereby opening and closing the opening 11.

[0015]

[Effects of the Invention] As described above, the present invention includes a door that is arranged in an opening so that it can be opened and closed, and one end of which is fixed to the door.
A wire whose other end is fixed to a bobbin and moves in the direction of opening the door by being wound on the bobbin, a motor that rotates the bobbin in the winding direction of the wire, and a motor that opens the door when the clutch is disengaged. Since it is equipped with a spring material to close the door, the force to close the door is the spring material. Therefore, when you are trapped in a car, you can open the door by hand against the spring, unlike conventional methods. Doors are closed using motors, which do not require a backup power source to open the door in the event of a power outage, reducing costs.
A worm deceleration mechanism and a clutch are interposed in the power transmission system between the motor and the bobbin, and the clutch is placed closer to the bobbin than the worm deceleration mechanism, so the spring material tends to close the door when it is open. Although a force is applied, the worm speed reduction mechanism has the advantage that the door can be kept open with a simple mechanism because it is locked in the reverse rotation direction. Furthermore, since a control unit is provided to momentarily rotate the motor in reverse when the clutch is disengaged in the fully open state, the clutch is released from the clutch spring material and the clutch is disengaged without resistance, ensuring accurate operation. is obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a front view of the same as above.

FIG. 3 is a side view of the same as above.

FIG. 4 is a front view showing a power transmission mechanism between the motor and the bobbin.

FIG. 5 is a plan view showing a power transmission mechanism between the motor and the bobbin.

FIG. 6 is a side view showing a power transmission mechanism between the motor and the bobbin.

FIG. 7 is an explanatory diagram of an interlocking mechanism between the main door and the subdoor same as above.

FIG. 8 is a schematic overall view of the present invention.

FIG. 9 is a schematic block diagram showing the relationship among the operating means, control section, motor, and electromagnetic solenoid of the present invention.

[Explanation of symbols]

1 Basket 2 Opening 3 doors 4 Bobbin 5 Wire 6 Motor 7 Worm reduction mechanism 8 Clutch 9 Spring material A Control section

Claims (1)

[Claims] [Claim 1] A mechanism for opening and closing a door provided at the opening of an elevator car, comprising a door arranged in the opening so that it can be opened and closed, one end fixed to the door, and the other end fixed to a bobbin. A wire that moves in the direction of opening the door by being wound onto the bobbin, a motor that rotates the bobbin in the winding direction of the wire, and a power transmission system between the motor and the bobbin. A worm reduction mechanism and a clutch;
It consists of a spring material that closes the door when the clutch is disengaged, the clutch is placed closer to the bobbin than the worm reduction mechanism, and a control section is provided to momentarily reverse the motor rotation when the clutch is disengaged when the clutch is fully open. An elevator door opening/closing mechanism characterized by comprising: