JP4629194B2 - Elevator door closing safety device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door closing safety device for an elevator door, and in particular, by irradiating light to a safety shoe of a car door and blocking the light path, the door opening / closing operation to be closed after the door is opened is automatically reversed to open the door again. It is related with the door-closing safety device made to open.
[0002]
[Prior art]
There are two elevator doors, a hold door provided in the hall on each floor and a car door provided in the car. When the car arrives at the designated floor, the door door opens and closes the car door in conjunction with the opening of the car door. When the lock is released, the door opens in conjunction with the card door, and the hold door is automatically closed and locked by the force of the ammunition.
[0003]
When a person who is going to close the car door from the opened state tries to stop the car door, the safety shoe provided in the car door operates and the switch linked to this activates. The door opening / closing device is reversed, and a door closing safety device is provided so that the door is opened again.
[0004]
Conventionally, as shown in FIG. 7, it has been a standard idea for this door-closing safety device to be composed of a mechanical safety shoe 1 and a microswitch 2. That is, the safety shoe 1 is configured by supporting a boot 4 parallel to the tip of the card door 3 on the card door 3 so that it can be translated by the links 5 and 5, and extending one link 5 from the shaft attachment portion to the extension portion 5a. Has been. The microswitch 2 has an operating piece 2a operable in contact with the extension 5a, and is fixed to the card door 3. An electric cable 6 is connected to the microswitch 2, and the electric cable 6 is connected to the ceiling of the car. It hangs down from the part.
[0005]
Therefore, when a person contacts the boot 4 or a door or a fixed part facing the card door 3 and the boot 4 moves upward via the links 5 and 5, the rotation of the link 5 causes the microswitch 2 to move. The open or closed state in which the operating piece 2a is pushed and operated by the extension portion 5a is picked up as an electrical signal, and this is input to the control unit of the door opening / closing device via the electric cable 6, whereby the control unit opens and closes the door. The car door 3 is opened again by reversing the drive section of the apparatus.
[0006]
[Problems to be solved by the invention]
However, in the configuration of the mechanical safety shoe 1 and the micro switch 2, since the electric cable 6 is disposed on the movable card door 3, the electric cable 6 is necessarily divided into a fixed portion and a movable portion. Therefore, for example, disconnection or grounding may occur between the fixed portion and the movable portion of the electric cable stopper, and there is a high possibility of occurrence or deterioration of noise due to pinching disconnection, pinching short, or contact.
[0007]
Therefore, it is necessary to check the state of damage of the electric cable at the time of inspection around the door, and it is also necessary to replace the electric cable and the micro switch in a timely manner. Thus, the replacement work of the electric cable 6 requires at least two workers for safety, and the time required for the work is not short.
[0008]
In addition, when the window glass 7 is fitted in the elevator door, the situation where the electric cable 6 hangs down and swings, and when it is not a unified wiring situation, it can be seen by passengers in the car or hall, Appearance is not good.
[0009]
Therefore, in view of the above circumstances, the present invention eliminates the problem of the electric cable 6 due to the configuration of the mechanical safety shoe 1 and the microswitch 2.
[0010]
[Means for Solving the Problems]
A door closing safety device for an elevator door according to the present invention is provided with a reflecting mirror device fixed to a safety shoe mounted on the elevator door, while projecting to the optical axis reflecting mirror. and Rutotomoni provided an optical axis Raitore device for receiving the fixing portion for facing the door, a shielding plate for blocking the optical path between the optical axis reflecting mirror by the movement of the safety shoe to the reflector apparatus provided, the optical axis Raitore The light emitted from the projector of the device is reflected by the optical axis reflecting mirror to form an optical path that is incident on the light receiver, and the light path is interrupted to perform reversal for restarting the door, and the optical path is interrupted. When the safety shoe is operated without being performed, the shielding plate blocks the optical path so as to perform reversal for restarting the door .
[0011]
Therefore, the light emitted from the light projector of the fixed part facing the card door that opens and closes is reflected by the optical axis reflecting mirror of the reflector device and is incident on the light receiver of the fixed part to form an optical path. When the door is shut off, the door opening / closing device is driven reversely so that the door to be closed automatically reopens.
[0013]
In addition, when the safety shoe moves up without blocking the light path, the shield plate blocks the light path, so the door opening / closing device drive is reversed and the door that was trying to close is automatically reopened. Therefore, safety when opening and closing the door can be secured.
[0014]
In addition, as described in claim 2 , the reflecting mirror device is required to be bent at a predetermined angle in the same direction at both ends of a holding frame having a predetermined length in which a long hole is formed along the longitudinal direction. A reflector holding part having a length is formed, and slits are respectively formed in the reflecting mirror holding part in the longitudinal direction, and the optical axis reflector is fixed to a rectangular substrate in which a screw that engages with the slit is fixed to the center part. It is characterized by being made. Therefore, the reflecting mirror device can be made compact, the optical axis reflecting mirror can be set and adjusted, and a highly accurate optical path can be formed.
[0015]
Furthermore, as described in claim 3 , the reflector device is housed and fixed in a boot in a safety shoe, and the boot is provided with a window hole corresponding to the optical axis reflector. To do. Therefore, it is possible to prevent the appearance of the reflecting mirror device from being deteriorated by being accommodated in the boot without being exposed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the elevator car 8 is fixedly mounted with a reflecting mirror device 10 on a boot 4 in the safety shoe 1 of the car door 3, while facing the reflecting mirror device 10 on the card entrance side. The optical axis lightley device 11 is fixed and attached to the fixing portion 9 of the optical axis.
[0017]
As shown in FIG. 3, the reflecting mirror device 10 is formed with reflecting mirror holding portions 13 having required lengths bent at 135 degrees outwardly at both ends of a holding frame 12 having a predetermined length made of a grooved material. A slit 14 is formed in each of the reflector holding portions 13 in the longitudinal direction, and a screw 15 that engages with the slit 14 and is fixed by a washer 18 and a nut 19 is fixed to a rectangular substrate 16 at a central portion. An axial reflecting mirror 17 is attached and fixed. A long hole 12a is formed in the holding frame 12 along the longitudinal direction.
[0018]
In FIG. 3, the upper optical axis reflecting mirror 17 is directly attached to the reflecting mirror holding section 13, but as shown in FIG. 2, the position can be adjusted in the same manner as the lower optical axis reflecting mirror 17. May be. Further, as shown in FIG. 4, in order to adjust the angle of the optical axis reflecting mirror 17, a rectangular substrate 16 having a screw 15 fixed at the center is rotatably supported on a holding frame 12 by a hinge 32, and a slit is formed. 14 is engaged with a screw 15 and fixed with a washer 18 and a nut 19, and a coil spring 33 is interposed between the substrate 16 and the reflector holding portion 13 to adjust the angle between the substrate 16 and the reflector holding portion 13. Thus, the reflection adjustment of the optical path 30 may be performed.
[0019]
As shown in FIG. 5, the reflecting mirror device 10 includes screws 31 in screw holes 4b formed on the opening side of the boot 4 together with screw holes 12b formed on both side walls of the holding frame 12 at predetermined intervals. Fixed and stored in the boot 4, the boot 4 is provided with window holes 4 a and 4 a corresponding to the optical axis reflecting mirrors 17 and 17.
[0020]
The optical axis light ray apparatus 11 includes a projector 20 and a light receiver 21, both of which are fixedly disposed facing the optical axis reflecting mirrors 17 and 17. If necessary, two light receivers 21 may be arranged side by side vertically or left and right to improve the light reception rate and prevent light from being received even by slight movement of the movable card door 3. The projector 20 is arranged in the upper stage and the light receiver 21 is arranged in the lower stage, but this arrangement may be reversed. Since the optical axis lightley device 11 does not have a movable configuration, the electric cable 22 connecting this to the door opening / closing device can be fixedly disposed on the fixing portion 9, and therefore, it is possible to wipe out fear of damage such as disconnection.
[0021]
On the other hand, as shown in FIG. 6, the card door 3 is provided with an optical axis cut bar device 23. This cut bar device 23 is a substrate 24 having a U-shaped cross section, and a bar 26 protruding toward one end by a coil spring 25 is slidably supported. The screws 28, 28, etc. are inserted into the long holes 27, 27 and fixed to the card door 3 so that the position can be adjusted. A flat shielding plate 29 that can be inserted into the long hole 12 a of the holding frame 12 is formed at the tip of the bar 26. The shielding plate 28 can block the optical path 30 of the optical axis reflecting mirrors 17 and 17.
[0022]
Therefore, the optical axis emitted from the projector 20 is incident on the upper optical axis reflecting mirror 17, reflected by the optical axis reflecting mirror 17, and incident on the lower optical axis reflecting mirror 17, and the optical axis reflecting mirror. The light is reflected by 17 and enters the light receiver 21. Therefore, an optical path 30 is formed between the projector 20, the optical axis reflecting mirrors 17 and 17, and the light receiver 21, and when this optical path 30 is interrupted, the door closing operation of the door opening / closing device is reversed, and the card door 3 Resumes.
[0023]
In this state, when the passenger of the car tries to get off and interrupts the optical path 30, the car door 3 resumes. When the passenger contacts the boot 4 without blocking the optical path 30, the boot 4 is pushed and the boot 4 is lifted via the links 5 and 5, and the shielding plate 28 of the cut bar device 23 is moved to the window hole of the holding frame 12. Since the optical path 30 is interrupted because the vehicle enters 18, the door closing operation of the door opening / closing device is reversed, and the car door 3 is restarted.
[0024]
Then, when the card door 3 is moved toward the fixed portion 9 and the door is closed after a certain period of time has passed without the light path 30 being blocked, the card door closing operation is reversed so that the card door 3 can be opened. .
[0025]
【The invention's effect】
According to the present invention described above, the reflecting mirror device is fixed to the elevator door, while the optical axis lightley device is provided to the fixing portion facing the door, so that the electric cable is provided only on the fixing portion. Since it is possible to omit the electric cable from the door, it is possible to eliminate the trouble of the electric cable related to the movement of the elevator door. Therefore, the necessity of frequent maintenance and inspection can be reduced.
[0026]
Moreover, since the electric cable is disposed in the fixed portion, it is possible to eliminate the poor appearance of the electric cable visible from the elevator door provided with the glass window.
[0027]
Furthermore, the light emitted from the projector of the optical axis lightley device is reflected by the optical axis reflector to form an optical path that enters the light receiver, and the elevator door is restarted by blocking this optical path. Safety is improved because the door is restarted without physically touching the shoe.
[0028]
In addition, when the safety shoe operates without blocking the optical path, the shielding plate blocks the optical path, so that the same action as a conventional microswitch can be achieved.
[Brief description of the drawings]
FIG. 1 is a perspective view from the hole side showing a state in which a card door showing an embodiment of the present invention is opened.
FIG. 2 is a schematic diagram showing a main part of the present invention.
FIG. 3 is a perspective view showing a reflecting mirror device according to the present invention.
FIG. 4 is a perspective view showing another example of the reflecting mirror device according to the present invention.
FIG. 5 is a perspective view showing an example of a reflecting mirror device housed and installed in a boot.
FIG. 6 is a front view of a cut bar device that blocks an optical axis when a safety shoe is activated.
FIG. 7 is a rear view showing a conventional card door.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Safety shoe 3 ... Car door 4 ... Boot 4a ... Window hole 8 ... Elevator car 9 ... Fixed part 10 ... Reflector apparatus 11 ... Optical axis light ray apparatus 12 ... Holding frame 12a ... Long hole 13 ... Reflector holding part 14 ... Slit DESCRIPTION OF SYMBOLS 15 ... Screw 16 ... Board | substrate 17 ... Optical axis reflecting mirror 20 ... Light projector 21 ... Light receiver 22 ... Electric cable 23 ... Optical axis cut bar apparatus 24 ... Board | substrate 25 ... Spring 26 ... Bar 27 ... Long hole 28 ... Screw 29 ... Shield plate 30 ... Optical path 31 ... Hinge

Claims (3)

  While providing the reflecting mirror device fixed to the safety shoe mounted on the elevator door, the optical axis light ray device for projecting and receiving light on the optical axis reflecting mirror is provided at the fixing portion facing the door, and The reflector device is provided with a shielding plate that blocks the optical path between the optical axis reflectors by the movement of the safety shoe, and the light emitted from the projector of the optical axis light ray device is reflected by the optical axis reflector and incident on the receiver. An optical path is formed, and reversing for resuming the door is performed by blocking the optical path, and when the safety shoe is operated without the optical path being blocked, the shielding plate blocks the optical path and thereby the door. A door safety device for an elevator door, characterized by performing reversal for resuming operation. In the reflecting mirror device, a reflecting mirror holding portion having a required length bent at a predetermined angle in the same direction is formed at both ends of a holding frame having a predetermined length in which a long hole is formed along the longitudinal direction. the mirror holder is formed respectively slits in the longitudinal direction, according to claim 1, characterized in that the optical axis reflecting mirror screws to be engaged with the slit in the rectangular substrate which is fixed to the central portion is fixed Elevator door closing safety device. The elevator door according to claim 1 or 2, wherein the reflector device is housed and fixed in a boot in a safety shoe, and a window hole corresponding to the optical axis reflector is opened in the boot. Door closing safety device.

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