Elevator Door Lockout With Extendable Handle for Standing Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing elevator door lockouts require users to bend down to engage and disengage, making them inconvenient for maintenance activities, and there is a need for a solution that allows temporary immobilization of hoistway doors during maintenance without requiring manual effort.
Innovation Solution
An elevator door lockout with an extendable handle that can be operated from a standing position, featuring a threaded shaft and pivoting grip, allowing for easy engagement and disengagement by rotating the handle without bending, and wedging between the sill groove and hoistway door to prevent movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional elevator door lockout is used, then the hoistway door can be immobilized during maintenance, but the user must bend down to engage and disengage the lockout
Solution Approach 1:
The handle is designed to be extendable and telescoping, allowing it to change length dynamically. This enables the handle to reach the threaded shaft from a standing position, eliminating the need for users to bend down while maintaining the lockout functionality.
Solution Approach 2:
The handle extends vertically in the vertical dimension, allowing users to operate the lockout from a standing position rather than bending down. This dimensional extension resolves the contradiction between ease of operation and device complexity.
2Ease of operation
If the handle is made extendable and telescoping, then users can operate the lockout from a standing position, but the device becomes more complex
Solution Approach 1:
The handle incorporates telescoping sections that can extend and retract, providing dynamic length adjustment. This allows the handle to reach the threaded shaft from a standing position, improving ease of operation while managing complexity through controlled mechanical design.
Solution Approach 2:
The handle is divided into multiple telescoping sections that can slide relative to each other. This segmentation allows the handle to extend to the required length for standing operation while maintaining a compact form when retracted, balancing ease of operation with device complexity.
3Ease of operation
If a pivoting grip is added to the handle, then rotational leverage is improved for engaging the threaded shaft, but the device complexity increases
Solution Approach 1:
The grip portion of the handle is designed with a curved, pivoting structure that provides mechanical leverage for rotating the threaded shaft. This curved design improves rotational effectiveness while the pivoting mechanism integrates smoothly into the handle assembly, minimizing additional complexity.
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
Enables convenient and efficient immobilization of hoistway doors during maintenance by allowing users to operate the lockout from a standing position, enhancing user comfort and operational efficiency.
Implementation Method 1
The elevator door lockout may be engaged by turning a threaded shaft of the extendable handle in a first rotational direction. The elevator door lockout may be disengaged by turning the threaded shaft in a second rotational direction.
Data Source
AI summary
The elevator door lockout with extendable handle includes an elevator door lockout and an extendable handle. The elevator door lockout with extendable handle may be operable to prevent movement of a hoistway door of an elevator by wedging the elevator door lockout between a sill groove and the hoistway door. The elevator door lockout may be engaged by turning a threaded shaft of the extendable handle in a first rotational direction. The elevator door lockout may be disengaged by turning the threaded shaft in a second rotational direction. The extendable handle may be adapted to turn the threaded shaft by grasping and turning the top of the extendable handle without requiring a user to bend down.