JP2005008383A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device capable of detecting a rope-like body, which is caught by car doors when closing the doors, with simple structure without requiring electric power. <P>SOLUTION: A detector 14 is provided in car doors 7 (7A, 7B) on a door stop side to project from a door stop side end when closing the door by using the door closing motion of the doors 7 as motive power, and a detecting means 16 is provided to detect projection of the detector 14. Since the detector 14 is projected from the door stop side end by the door closing motion of the car doors as motive power, a driving machine for driving the detector 14, which requires electric power, and wiring for power are unnecessary, and as a result, structure can be simplified. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator apparatus, and more particularly, to an elevator apparatus that prevents a car from being lifted and lowered while a string-like body is sandwiched when the door is closed.
[0002]
[Prior art]
As shown in Patent Document 1 and Patent Document 2, an elevator apparatus has been already proposed in which the car is not raised and lowered while the string-like body is sandwiched when the door is closed.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 8-169674 (FIGS. 1 to 7)
[Patent Document 2]
JP-A-7-267549 (FIGS. 1 to 7)
[0004]
[Problems to be solved by the invention]
The elevator apparatus described in Patent Document 1 has a configuration in which a detection body that detects a string-like body sandwiched between car doors is driven by a driving machine that requires electric power. Therefore, there exists a problem which requires the installation of the drive machine which requires electric power, and the wiring for electric power.
[0005]
On the other hand, the elevator apparatus described in Patent Document 2 is configured to detect a string-like body sandwiched between car doors by rotating the detection body when the door is closed. Therefore, in order to rotate the detection body, it is necessary to install a drive unit that requires electric power and wiring for electric power. Further, when the string-like body is loose, there is a danger that the string-like body is scooped up by the rotating detection body and caught in the vicinity of the driving machine. Furthermore, in order to rotate the detection body, the car cannot be raised or lowered until the rotation of the detection body is completed, and a certain time is required from the door closing to the car raising / lowering.
[0006]
Conventionally, a safety shoe is provided on the door-to-door side of the car door. When a foreign object hits the safety shoe while the door is closed, the door closing operation of the car door is stopped or the car door is opened. I try to let them. However, the safety shoe is configured to retreat from the door end just before the car door is closed so that the car door is completely closed. For this reason, the safety shoe does not function even if the string-like body is pinched on the door-to-door side of the car door, and as a result, the car can be lifted and lowered with the string-like body sandwiched, which may cause an accident. There is.
[0007]
An object of the present invention is to provide an elevator apparatus that can detect the pinching of a string-like body when the door is closed with a simple configuration without requiring electric power.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a detection body provided on the door-to-door side of a car door, which projects from the door-end side end when the door is closed by using the opening and closing operation of the car door as a power. The detection means for detecting is provided.
[0009]
As described above, the detection body is protruded from the door end side by using the opening / closing operation of the car door as power, so that there is no need for a driving device for driving the detection body, electric power supplied to the driving device, and wiring for electric power. As a result, the configuration can be simplified. In addition, when the door is closed, the detection body only protrudes from the door end side, so that the detection body does not cause the string-like body to be caught, and furthermore, the detection of the string-like body can be performed simultaneously with the door closing, The car can be raised and lowered simultaneously with the door closing.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of an elevator apparatus according to the present invention will be described with reference to FIGS. The elevator apparatus includes a hoistway 2 that passes through the building 1 in the vertical direction and is covered with walls, a hall 3 provided on each floor of the building 1, and the hoistway 2 and the hall 3. A doorway 4 that communicates with each other, a car 6 that is lifted and lowered by a rope 5 in the hoistway 2, a car door 7 that opens and closes the doorway of the car 6, and the doorway 4 And a landing door 8 that opens and closes in the lateral direction in synchronization with the car door 7.
[0011]
The car door 7 is composed of two so-called central double doors 7A and 7B that open and close the entrance / exit of the car 6 from the center to the left and right laterally, and each of the car doors 7A and 7B is provided at the upper part thereof. Hanger rollers 9A and 9B are provided. The hanger rollers 9A and 9B are suspended on the car doors 7A and 7B by being guided on the door rail 10 provided at the upper part of the entrance / exit of the car 6. The lower ends of the car doors 7A and 7B are guided by a threshold (not shown).
[0012]
On the other hand, although the illustration is omitted, the landing door 8 is composed of two doors with a center double door, similar to the car door 7. The landing doors 8 are suspended by guiding the hanger rollers 11 provided at the tops of the two doors onto the door rails 12 fixed to the building wall 1W at the top of the entrance 4 facing the hoistway 2, respectively. The lower part of the landing door 8 is guided by a sill 13 provided at the end of the landing 3 on the side of the hoistway 2.
[0013]
And the said car door 7 is provided with the detection mechanism for detecting that the string-like body was pinched | interposed into the car door 7 at the time of door closing. The detection mechanism includes a detection body 14, a driving means 15 that causes the detection body 14 to protrude from the door end of the car door 7, a detection means 16 that detects the protrusion of the detection body 14, and the detection means 16. And a control device (not shown) for controlling the raising / lowering activation of the car 6 according to the presence or absence of the detection signal.
[0014]
The detection body 14 is a rod-like body that is shorter than the height of the car door 7 </ b> A, and is supported by the car door 7 </ b> A via a pair of upper and lower upper links 17 and a lower link 18. One end portions of the upper link 17 and the lower link 18 are rotatably connected to the upper and lower portions of the detection body 14 via connecting shafts 19A and 20A, and the other end portion is a support shaft 19B parallel to the connecting shafts 19A and 20A. , 20B and is rotatably supported by the car door 7A. The connecting shafts 19A and 20A and the support shafts 19B and 20B are arranged so that the detection body 14 is always parallel to the door end of the car door 7A, and the detection body 14 is parallel to the door end side of the car door. The upper link 17 and the lower link 18 are supported so that the lower end thereof is displaced downward.
[0015]
The driving means 15 includes a first link 21 supported at one end by the support shaft 19B, a second link 23 connected at one end to the other end of the first link 21 via a connecting shaft 22A, A support shaft 22 </ b> B that supports the other end of the second link 23 to a fixing member of the car 6 is provided. The first link 21 and the second link 23 have a V shape with the connecting shaft 22A as a break point. When the car doors 7A and 7B are fully opened, the V-shaped angle α is narrow, The doors 7A and 7B are supported by the support shafts 19B and 22B so that the V-shaped angle α is maximized when the doors 7A and 7B are fully closed. The first link 21 is provided with a stopper 24 at a position extending to the upper link 17 side beyond the support shaft 19B. By engaging the stopper 24 with the upper link 17, the upper link 17 is provided. However, it does not rotate freely due to its own weight, but rotates following the first link 21. The stopper 24 is configured so that the stopper function can be canceled when a force of a predetermined value or more (more than the weight of the detection body 14) acts in a direction in which the detection body 14 is retracted from the door contact side of the car door 7A. Has been.
[0016]
The detection means 16 is composed of, for example, a micro switch provided in the car door 7B facing the car door 7A. The detecting means 16 has a contact 25 that is displaced by the protruding detection body 14 when the car doors 7A and 7B are normally closed and the detection body 14 protrudes toward the car door 7B. Due to the displacement of the contact 25, a detection circuit (not shown) is closed and a current as a detection signal flows. A control device (not shown) using this current flow as a trigger permits driving to raise or lower the car 6. The current that is constantly flowing through the detection circuit may be interrupted by the pressing of the contact 25, and the driving for raising or lowering the car 6 may be permitted using this as a trigger.
[0017]
Next, the operation of the car doors 7A and 7B of the elevator apparatus including the detection body 14, the drive means 15, the detection means 16, and the control device will be described.
[0018]
As shown in FIGS. 1 and 5, when the car doors 7A and 7B are closed in the direction of the arrow a, the car doors 7A and the car 6 are pivotally supported between the fixing members and folded into a V shape. The first link 21 and the second link 23 gradually increase the V-shaped angle α. When the V-shaped angle α increases, the upper link 17 that engages with the stopper 24 of the first link 21 rotates clockwise (in the direction of arrow b) about the support shaft 19B and is connected by the connecting shaft 19A. The detected body 16 is displaced toward the door contact side of the car door 7A and is displaced below the car door 7A as indicated by a two-dot chain line.
[0019]
When the car doors 7A and 7B are completely closed without being obstructed by an obstacle or a foreign object, the V-shaped angle α ′ is maximized as shown in FIGS. It protrudes from the door end side of the door 7A to the adjacent car door 7B side, and the contact 25 of the detecting means 16 is pushed in. The detection circuit (not shown) is closed by the pressing of the contactor 25, and a current flows. The control device issues a command to move the car 6 up and down by the current flow.
[0020]
On the contrary, when the door is opened, the V-shaped angle between the first link 21 and the second link 23 gradually decreases, and at this time, the operation of the first link 21 is performed via the stopper 24 via the upper link. 17 and rotated counterclockwise (arrow c direction) about the support shaft 19B. By the rotation of the upper link 17, the detection body 14 protruding from the door end side of the car door 7 </ b> A is retracted.
[0021]
On the other hand, when the string-like body is sandwiched during the door-closing operation shown in FIGS. 1 and 5 and the door is closed as shown in FIGS. 3 and 7, the detection body 14 is blocked by the string-like body 26. . At this time, the upper link 17 that supports the detection body 14 stops rotating about the support shaft 19B, and only the first link 21 releases the engagement between the upper link 17 and the stopper 24 in the direction of the arrow b. Continue to rotate. Therefore, the detection body 14 does not protrude outside the door end of the car door 7A, and the contact 25 of the opposing detection means 16 is in the same state as when the car door 7B is fully open, and the detection circuit There is no current flow. As a result, the control device determines that the door is not completely closed, and does not allow the car 6 to be lifted up and down. At this time, the control device may issue a door opening command to open the car doors 7A and 7B, and may further guide the passengers in the car 6 for the subsequent operation by voice or light, for example.
[0022]
As described above, according to the present embodiment, it is possible to prevent the car 6 from being raised and lowered while the string-like body is sandwiched between the car doors. Further, since the projecting entry (advance and retreat) of the detection body 14 from the door contact side end is performed by each link by using the opening / closing operation of the car door as power, the drive unit for driving the detection body and the power for the drive unit In addition, no power wiring is required, and the configuration can be simplified. Further, as shown in FIG. 2, the detection body 14 is displaced downward from the lower ends of the respective car doors 7A and 7B when protruding from the door-end side end, so that a string-like body temporarily lies on a sill (not shown). Even if it is, it can be detected. In addition, when the door is closed, the detection body 14 only protrudes from the door-end side end of the car door and comes into contact with the string-like body, so that the detection body 14 does not entangle the string-like body 26. Furthermore, since the presence / absence of the string-like body 26 can be detected simultaneously with the door closing, if the string-like body 26 does not exist, the car 6 can be raised and lowered simultaneously with the door closing.
[0023]
Next, a second embodiment will be described with reference to FIG. In the first embodiment, the detection body 14 and the drive means 15 are installed on the one car door 7A side, and the detection means 16 is provided on the other car door 7B side. Then, the detection body 14, the drive means 15, and the detection means 16 were installed in the one car door 7A side.
[0024]
If it demonstrates concretely, the structure of those other than the installation place of the detection means 16 is the same as 1st Embodiment. That is, in the present embodiment, the detection means 16 is installed in correspondence with the upper link 17. Then, the displacement of the upper link 17 in the vicinity of the door closing region is detected, and thereby the presence or absence of the string-like body 26 is detected. FIG. 8 shows a case where the string-like body 26 is sandwiched between the car doors 7A and 7B when the door is closed. At this time, the detection body 14 is normally moved from the door end side of the car door 7A to the car door 7B side. The upper link 17 and the first link 21 are linearly engaged. However, since the detection body 14 stays at the same position as the door end side of the car door 7A by the string-like body 26, the upper link 17 does not further rotate clockwise, and only the first link 21 is The link 17 and the stopper 24 are disengaged and rotated clockwise. In the position where the upper link 17 stops rotating, if the contact 25 of the detecting means 16 cannot be pushed in by the upper link 17, as in the first embodiment, the car 6 Lifting can be prohibited.
[0025]
In the present embodiment, when there is no foreign matter such as a string-like body, the upper link 17 rotates in the same manner as the first link 21, so that the detection body 14 protrudes outward from the door end. The elevator 25 can be allowed to move up and down by pushing the contact 25 by the upper link 17.
[0026]
In the present embodiment, the detection means 16 may be energized when the contact 25 is pushed by a predetermined amount, or may be cut off when the contact 25 is pushed by a predetermined amount. .
[0027]
According to the present embodiment, the same effect as that of the first embodiment can be obtained.
[0028]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain an elevator apparatus that can detect pinching of a string-like body when the door is closed with a simple configuration without requiring electric power.
[Brief description of the drawings]
FIG. 1 is a schematic front view showing a car door of the first embodiment of the elevator apparatus according to the present invention when the door is closed.
FIG. 2 is a schematic front view showing the door closed state of FIG. 1;
3 is a schematic front view showing a state in which the foreign substance in FIG. 1 is sandwiched.
FIG. 4 is a partially longitudinal side view showing an outline of an elevator apparatus according to the present invention.
FIG. 5 is a schematic plan view of FIG. 1;
6 is a schematic plan view of FIG.
7 is a schematic plan view of FIG. 3. FIG.
FIG. 8 is a schematic front view showing a car door in the elevator apparatus according to the present invention in the second embodiment when the door is closed.
[Explanation of symbols]
6 ... Car, 7 (7A, 7B) ... Car door, 14 ... Detection body, 15 ... Driving means, 16 ... Detection means, 17 ... Upper link, 18 ... Lower link, 19A, 20A, 22A ... Connecting shaft, 18B , 20B, 22B ... support shaft, 21 ... first link, 23 ... second link, 24 ... stopper, 25 ... contact, 26 ... string-like body.

Claims (6)

In an elevator apparatus comprising a car door provided in a car that moves up and down in the hoistway and a landing door that is provided on the landing side and opens and closes in synchronization with the car door, the elevator apparatus is provided on the door side of the car door. An elevator apparatus comprising: a detection body that protrudes from a door-end side end when the door is closed by using relative movement between the car door and the fixed portion as power; and detection means that detects the protrusion of the detection body. In an elevator apparatus comprising a car door provided in a car that moves up and down in the hoistway and a landing door that is provided on the landing side and opens and closes in synchronization with the car door, the elevator apparatus is provided on the door side of the car door. A detection body that protrudes from the door-end side end when the door is closed, a driving means that drives the detection body by using an opening / closing operation of the car door, and a detection means that detects the protrusion of the detection body from the door-end side end. An elevator apparatus comprising the elevator apparatus. In an elevator apparatus comprising a car door provided in a car that moves up and down in the hoistway and a landing door that is provided on the landing side and opens and closes in synchronization with the car door, the elevator apparatus is provided on the door side of the car door. The car is driven by the opening / closing operation of the car door, the detection body protruding from the door end when the door is closed, the detection means for detecting the protrusion of the detection body, and the presence or absence of a detection signal from the detection means. An elevator apparatus comprising: a control device that determines whether or not the elevator can be raised and lowered. The elevator apparatus according to claim 1, 2 or 3, wherein the detection means is provided at a position facing the detection body. 3. The elevator apparatus according to claim 2, wherein the detection means is provided at a position facing the drive means. The elevator apparatus according to claim 1, 2, 3, 4, or 5, wherein the detection body protrudes from the door contact side end and is displaced downward when the door is closed.

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