Elevator Door Stabilizing Roller Guide Mechanism
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Solution Overview
Problem
Elevator doors in high-rise buildings and tunnel installations face issues with abnormal noise and increased running resistance due to external forces like wind pressure, which can cause the door to become misaligned and hinder proper opening and closing movements.
Innovation Solution
A door operator system featuring a displacement restraining device with stabilizing and guide rollers that rotate along the door rail and support body to prevent vertical and axial displacement, ensuring the door remains aligned and stable under external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plate member is arranged on the side surface of the door rail to prevent the hanger roller from coming off, then the door can be restrained from lateral displacement, but the plate member contacts the door rail under external force causing abnormal noise and increased running resistance
Solution Approach 1:
A gap is introduced between the plate member and door rail, with a buffer member (such as a rubber or elastic element) positioned in this gap to act as an intermediary. This buffer member absorbs external forces before they can cause direct contact between the plate member and door rail, thereby preventing abnormal noise and increased running resistance while still maintaining lateral displacement prevention
Solution Approach 2:
The buffer member is pre-installed in the gap between the plate member and door rail to provide beforehand cushioning. When external forces act on the door system, this pre-positioned buffer member absorbs and dissipates the impact energy before it can cause harmful contact between the plate member and door rail, preventing abnormal noise and reduced running resistance
2Device complexity
If the door is designed with a simple hanging structure, then the device complexity is reduced, but the door becomes susceptible to displacement under external forces like wind pressure
Solution Approach 1:
The buffer member acts as an intermediary element that can be integrated into the existing simple door hanging structure without adding significant complexity. It absorbs external forces and protects the door system from displacement while maintaining the overall simplicity of the design
Solution Approach 2:
The buffer member is made from composite or specially designed materials that provide high cushioning efficiency with minimal structural complexity. These materials enable the buffer member to effectively resist external forces while occupying minimal space and adding minimal complexity to the overall door hanging structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively restrains door displacement and maintains smooth operation even under external forces, preventing noise and resistance issues, ensuring proper alignment and movement.
Implementation Method 1
a stabilizing roller which rotates while being in contact with the lower face of a part of the support body along with the opening/closing movement of the door
Implementation Method 2
a first guide roller which rotates while being in contact with one side surface of the part of the support body along with the opening/closing movement of the door
Implementation Method 3
a second guide roller which rotates while being in contact with the other side surface of the part of the support body along with the opening/closing movement of the door
Implementation Method 4
a hanger roller which is provided rotatably on the door hanger to guide the opening/closing movement of the door by means of rolling on the upper face of the door rail
Data Source
AI summary
There is provided a door operator of an elevator that can restrain the displacement of a door properly even when an external force is applied to the door on account of wind pressure or the like. The door operator includes a hanger roller and a stabilizing roller that are provided rotatably on a door hanger, a support body for supporting a door rail, and a displacement restraining device provided on the door hanger. The displacement restraining device is provided to restrain the door from being displaced to the axial direction of the hanger roller. The displacement restraining device includes a first guide roller that rotates while being in contact with one side surface of a part of the support body along with the opening/closing movement of the door and a second guide roller that rotates while being in contact with the other side surface of the part of the support body along with the opening/closing movement of the door.