Search

JP-7857162-B2 - Landing doors and elevators

JP7857162B2JP 7857162 B2JP7857162 B2JP 7857162B2JP-7857162-B2

Inventors

  • 渡邊 美香子
  • 高原 悠

Assignees

  • 株式会社日立製作所

Dates

Publication Date
20260512
Application Date
20220530

Claims (7)

  1. A double-leaf landing door that opens and closes an entrance/exit that communicates with the elevator shaft, A pair of door bodies, The safety fence is provided on the pair of door bodies and is capable of being transformed between a retracted state facing the back surface of the pair of door bodies that faces the elevator shaft side and an installed state positioned at the entrance, The aforementioned safety fence, A pair of connecting members attached to the back surface of the pair of door bodies, A pair of rotating members connected to the pair of connecting members and rotatable around an axis extending in the vertical direction, The pair of rotating members are opposed to each other in the horizontal direction, and a pair of support members extend in the vertical direction, A plurality of connecting bars that connect the pair of rotating members and the pair of support members, A safety bar is rotatably supported on one of the pair of support members and connectable to the other of the pair of support members, It has groove insertion projections attached to the lower part of the pair of support members, When the safety fence is deformed to the installed state, the pair of support members are located between the pair of door bodies, and the groove insertion projection is inserted into a sill groove that movably engages with the pair of door bodies, in a landing door.
  2. The pair of connecting members are configured to be extendable and retractable, and when the safety fence is deformed to the installed state, they protrude further toward the elevator shaft than the pair of door bodies. The landing door according to claim 1, wherein the pair of rotating members are located on the elevator shaft side of the pair of door bodies when the safety fence is deformed to the installed state.
  3. The back surfaces of the pair of door bodies are provided with vertical reinforcements extending in the vertical direction. The landing door according to claim 1, wherein the pair of connecting members are attached to the vertical reinforcement.
  4. The landing door according to claim 1, wherein the plurality of connecting bars are arranged at predetermined intervals in the vertical direction and to which safety belt hooks can be attached.
  5. The landing door according to claim 1, wherein the plurality of connecting bars have a cushioning material that prevents contact with the pair of door bodies when the safety fence is deformed to the installed state.
  6. The landing door according to claim 1, wherein the groove insertion projection is supported by the pair of support members so as to be movable in the vertical direction.
  7. An elevator comprising a car that moves up and down within a hoistway, and double-leaf landing doors that open and close an entrance communicating with the hoistway, The aforementioned boarding door is, A pair of door bodies, The safety fence is provided on the pair of door bodies and is capable of being transformed between a retracted state facing the back surface of the pair of door bodies that faces the elevator shaft side and an installed state positioned at the entrance, The aforementioned safety fence, A pair of connecting members attached to the back surface of the pair of door bodies, A pair of rotating members connected to the pair of connecting members and rotatable around an axis extending in the vertical direction, The pair of rotating members are opposed to each other in the horizontal direction, and a pair of support members extend in the vertical direction, A plurality of connecting bars that connect the pair of rotating members and the pair of support members, A safety bar is rotatably supported on one of the pair of support members and connectable to the other of the pair of support members, It has groove insertion projections attached to the lower part of the pair of support members, When the safety fence is deformed to the installed state, the pair of support members are located between the pair of door bodies, and the groove insertion projection is inserted into a sill groove that movably engages with the pair of door bodies in an elevator.

Description

This invention relates to landing doors and elevators. When performing maintenance and inspection work on elevators, it is sometimes necessary to open the landing doors at the building's landing area. When performing work with the landing doors open in this way, both the worker and other personnel must pay attention to the opening of the landing doors. Patent Document 1 describes an elevator landing door opening device. The landing door opening device described in Patent Document 1 involves opening the landing door, then detaching a lever stored on the underside of the landing door from its retaining bracket and tilting it horizontally to place the lever across the opening of the landing door. This allows the landing door to be easily and reliably held open during elevator inspections, and the opening of the landing door can be closed to prevent unauthorized entry by the general public. Japanese Patent Application Publication No. 5-116876 This is an overall configuration diagram of an elevator according to one embodiment of the present invention.This is a side view showing the elevator car of an elevator according to one embodiment of the present invention stopped at an arbitrary floor.This is a rear view of the landing door when the safety fence according to one embodiment of the present invention is transformed into a retracted state.This is a cross-sectional view of a landing door when the safety fence according to one embodiment of the present invention is transformed into a retracted state.This is a cross-sectional view of a landing door when the rotating member of a safety fence according to one embodiment of the present invention is pulled out towards the hoistway.This is a cross-sectional view of a landing door when a safety fence according to one embodiment of the present invention is transformed into an installed state.This is a rear view of the landing door when the safety fence according to one embodiment of the present invention is transformed into an installed state. The following describes a landing door and elevator according to one embodiment of the present invention. Note that common components in each figure are denoted by the same reference numerals. 1. One Embodiment [Elevator] First, the configuration of an elevator according to one embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is an overall configuration diagram of an elevator according to one embodiment. Figure 2 is a side view showing the elevator car stopped at an arbitrary floor. As shown in Figure 1, elevator 1 is installed in a hoistway 110 formed within the building structure. Elevator 1 comprises a car 120 for carrying people and luggage, a main rope 130, a counterweight 140, a hoisting machine 100, and landing doors 211A and 211B (see Figure 2). A machine room 160 is provided at the top of the hoistway 110. The hoisting machine 100 is located in the machine room 160. The main rope 130 is wound around the hoisting machine 100. The hoisting machine 100 is a device that winds up the main rope 130 to raise and lower the elevator car 120. A deflection wheel 150 is installed near the hoisting machine 100. The main rope 130 is mounted on the deflection wheel 150. The elevator car 120 is formed in a hollow, roughly rectangular shape. The elevator car 120 is connected to the counterweight 140 via the main rope 130. When the hoisting machine 100 winds up the main rope 130, the elevator car 120 and the counterweight 140 move up and down in opposite directions. The mass of the counterweight 140 is set to be approximately the same as the mass of the elevator car 120 when unloaded. As shown in Figure 2, the elevator car 120 includes a car compartment 10 for people and objects to get on and off, a pair of car doors 11A and 11B, a car-side door unit 12, and a car-side door sill 13. One side of the elevator car 10 is provided with an opening that is opened and closed by a pair of car doors 11A and 11B. People and objects enter and exit the elevator car 120 through this opening in the elevator car 10. The car-side door unit 12 is provided at the upper end of the opening in the elevator car 10 in the vertical direction. The car-side door sill 13 is provided at the lower end of the opening in the elevator car 10 in the vertical direction. The pair of cage doors 11A and 11B are double-opening doors. Each of the pair of cage doors 11A and 11B is formed in a rectangular shape, elongated in the vertical direction. Sliders (not shown) are provided at the lower ends of the pair of cage doors 11A and 11B in the vertical direction. The sliders slidably engage with sill grooves provided in the cage-side door sill 13. The cage-side door unit 12 and the cage-side door sill 13 support the pair of cage doors 11A and 11B so that they can move in a horizontal direction perpendicular to the vertical direction. The car-side door unit 12 includes a car-side door rail 15, a pair of door hangers 21A and 21B, an en