Elevator Actuator Cover Member for Dust Protection
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Solution Overview
Problem
The operational reliability of safety gears actuated by electric actuators in elevator devices is compromised by dust accumulation and mechanical damage in installation environments, leading to potential failures during overspeed conditions.
Innovation Solution
The elevator device incorporates an electric actuator with a housing that includes a cover member to protect the operation lever from dust and foreign substances, enhancing the reliability of the actuation mechanism by preventing contamination and ensuring smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electric actuator is exposed in the installation environment, then the operation lever can be easily accessed and operated, but dust and foreign substances can adhere to the mechanism part causing reliability degradation
Solution Approach 1:
A cover member made of flexible material is provided that can be elastically deformed to allow passage of the operation lever while maintaining coverage protection. The flexible cover protects the mechanism part from dust and foreign substances while still permitting the operation lever to pass through and be operated, thus resolving the contradiction between protection and accessibility.
2Reliability
If the operation lever is completely enclosed in the housing, then the mechanism part is protected from dust, but the operation lever cannot be accessed for actuation
Solution Approach 1:
The cover member is constructed from flexible material that can be elastically deformed. When the operation lever needs to pass through, the cover member deforms elastically to allow passage, then returns to its original shape to maintain protection. This enables both enclosure for protection and accessibility for operation.
Solution Approach 2:
The cover member transitions from a static enclosed structure to a dynamic structure that can deform elastically. This dynamic behavior allows the cover to adapt between two states: protected enclosure when not in use, and open passage when the operation lever needs to be actuated, thus resolving the contradiction between protection and accessibility.
Data Source
AI summary
An elevator device adapted to improve the operational reliability of an electric actuator in an installation environment is disclosed. The electric actuator actuates a safety gear. The elevator device includes: a car (1); a safety gear (2) mounted to the car; and an electric actuator (10) mounted to the car and operative to actuate the safety gear. The electric actuator includes: a housing (30); a mechanism part located in the housing; and an operation lever (11) connected to the mechanism part and extended from the inside of the housing to the outside of the housing through an opening of the housing. The housing includes a cover member (32) for covering the opening. The operation lever is inserted through the cover member.