CN-121986065-A - Elevator with a motor

CN121986065ACN 121986065 ACN121986065 ACN 121986065ACN-121986065-A

Abstract

The elevator comprises a building side door provided at an entrance of a hall where an elevator car stops in a building structure, a hall side locking mechanism for locking the building side door in a state where the building side door is closed so as to be unlocked, and a load increasing mechanism. When the hall-side locking mechanism is unlocked and the building side door moves to the opening side in the opening/closing direction, the load increasing mechanism increases the load on the opening side of the building side door in the opening/closing direction via the hall-side locking mechanism.

Inventors

Yotsuki Daisuke
IMAMURA KOHEI

Assignees

株式会社日立制作所

Dates

Publication Date: 20260505
Application Date: 20240110

Claims (8)

1. An elevator, wherein, The elevator is provided with: A building side door provided at an entrance of a hall in a building structure in which an elevator car stops; a hall side locking mechanism for locking the building side door in a state of closing in an unlocking manner, and A load increasing mechanism that acts on a position closer to an opening side of the opening and closing direction of the building side door than the hall side locking mechanism, When the hall-side locking mechanism is unlocked and the building side door is moved to the opening side in the opening/closing direction, the load increasing mechanism increases the load on the opening side of the building side door in the opening/closing direction via the hall-side locking mechanism.
2. The elevator according to claim 1, wherein, The hall side locking mechanism has: A rotating shaft provided to the building side door; a locking side hook member rotatably supported by the rotation shaft; a fixed hook member which is engaged with the locking side hook member in a releasable manner, and A lever provided to the locking side hook member, The load increasing mechanism increases a load on an opening side of the building side door in an opening and closing direction via the lever.
3. The elevator according to claim 2, wherein, The load increasing mechanism has: a first rotating shaft provided to a building side door unit provided to the doorway; a first bracket rotatably supported by the first rotation shaft; a second rotating shaft provided to the first bracket, and A second bracket rotatably supported by the second rotation shaft, The lever is provided with an abutting portion that abuts against the second bracket when the hall-side locking mechanism is unlocked and the building side door is moved to the opening side in the opening-closing direction.
4. The elevator according to claim 3, wherein, The load increasing mechanism has: a first stop pin for limiting the rotation of the first bracket in a first rotation direction or a force application member for limiting the rotation of the first bracket in the first rotation direction, and A second stopper pin provided to the first bracket and restricting rotation of the second bracket in a second direction opposite to the first rotation direction, The second bracket rotates in the second direction together with the first bracket when the building side door moves to the opening side in the opening/closing direction and contacts the contact portion.
5. The elevator according to claim 4, wherein: the load increasing mechanism includes a biasing member that biases the first bracket and the second bracket in the first rotational direction.
6. The elevator according to claim 5, wherein, The urging member is connected with the first bracket.
7. The elevator according to claim 4, wherein: The load increasing mechanism has a magnet and, The first bracket and the second bracket are biased in the first rotation direction by the magnetic attraction force of the magnet.
8. The elevator according to claim 2, wherein, The load increasing mechanism has: A guide shoe provided to the lever, and A friction member that comes into contact with the guide shoe when the hall-side locking mechanism is unlocked and the building side door is moved to the opening side in the opening/closing direction, The load on the opening side of the building side door in the opening/closing direction is increased by the friction force between the guide shoe and the friction member.

Description

Elevator with a motor Technical Field The present invention relates to an elevator. Background Conventionally, a hall side locking mechanism for locking and unlocking an opening/closing operation is provided in a building side door provided on a hall side of an elevator to prevent passengers from falling into a hoistway. When the inspection work is performed, the hall-side locking mechanism is unlocked, and the building side door is opened. In addition, in order to prevent an operator from falling into the hoistway, it is necessary to confirm whether or not the elevator car is stopped at a predetermined position after opening the side door of the building by a predetermined distance. As such a hall side locking mechanism, there is a hall side locking mechanism described in patent document 1, for example. Patent document 1 describes a technique of providing a first door locking device and a second door locking device. The first door locking device is provided with a first hook having a first concave portion, and a first hook receiving portion for engaging the first concave portion. The second door locking device includes a second hook having a second concave portion, and a second hook receiving portion for engaging the second concave portion. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2022-24571 Disclosure of Invention Problems to be solved by the invention However, in the technique described in patent document 1, in order to unlock the building side door at the time of inspection operation, it is necessary to release both door locking devices, and there is a problem that not only the unlocking operation becomes very complicated, but also the number of components increases. Further, in order to release the second door locking device, the operator needs to operate the unlocking key. As a result, in the second-stage opening operation, there is a risk that the operator is occupied with one hand, and it is difficult to safely open the building side door. In view of the above, an object of the present invention is to provide an elevator capable of safely opening a side door of a building when performing inspection work. Means for solving the problems In order to solve the above problems and achieve the object, an elevator includes a building side door provided at an entrance of a hall in a building structure where an elevator car stops, a hall side locking mechanism that locks the building side door in a state where it is closed in an unlocked manner, and a load increasing mechanism. The load increasing mechanism is operated at a position closer to the opening side of the opening and closing direction of the building side door than the hall side locking mechanism. When the hall-side locking mechanism is unlocked and the building side door moves to the opening side in the opening/closing direction, the load increasing mechanism increases the load on the opening side of the building side door in the opening/closing direction via the hall-side locking mechanism. Effects of the invention According to the elevator with the above structure, the side door of the building can be safely opened during inspection operation. Drawings Fig. 1 is a schematic configuration diagram of an elevator according to a first embodiment. Fig. 2 is a front view of an elevator entrance according to the first embodiment, as seen from the side of the elevator car. Fig. 3 is a plan view of the hall side locking mechanism and the load increasing mechanism of the elevator according to the first embodiment, as viewed from above. Fig. 4 is a front view showing a hall side locking mechanism and a load increasing mechanism of an elevator according to the first embodiment. Fig. 5 is a front view showing a state in which a side door of an elevator building according to the first embodiment is opened at one stage. Fig. 6 is a plan view of the hall side locking mechanism and the load increasing mechanism of the elevator according to the first embodiment, when the side door of the elevator is opened at one stage, as viewed from above. Fig. 7 is a front view of a hall side locking mechanism and a load increasing mechanism showing a state in which a building side door of an elevator according to the first embodiment is opened at one stage. Fig. 8 is a front view showing a hall side locking mechanism and a load increasing mechanism of the elevator according to the first embodiment in a second stage of opening operation of a building side door. Fig. 9 is a front view showing a hall-side locking mechanism and a load increasing mechanism in the closing operation of the elevator in the first embodiment. Fig. 10 is a front view showing a hall-side locking mechanism and a load increasing mechanism in the closing operation of the elevator in the first embodiment. Fig. 11 is a front view showing a hall side locking mechanism and a load increasing mechanism in opening and closing operations of a building side door in a nor