Elevator Maintenance Device with Multi-Clock Time Selection

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Solution Overview

Problem

Existing elevator systems lack the ability to implement specific functions according to multiple clocks, failing to meet requests from building owners or external institutions for time-based operations.

Innovation Solution

A maintenance device equipped with multiple clocks, selection means, and recording, transmission, and operation control means that allow for selecting and utilizing the appropriate clock based on the content of elevator information to perform specific operations, record, and transmit data with time information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If only one clock is provided in the elevator system, then the system structure remains simple, but the system cannot respond to requests from building owners or external institutions for specific time-based functions

Engineering Contradiction:

Improveability to implement multiple clock-based functionsVSAvoidnumber of clocks in the system

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The maintenance device is designed to perform multiple functions by selecting from multiple clocks based on the type of operation needed. The same maintenance device can record data using different clocks, transmit data with different time references, or start different operations based on different time sources, making it universally applicable to various time-based requirements without needing separate dedicated devices for each function

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system dynamically selects which clock to use based on the content of the operation being performed. The selection means chooses the appropriate clock from the plurality of clocks according to the specific maintenance or service operation that needs to be executed, allowing the system to adapt its time reference to match the operational context

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple clocks are added to the maintenance device, then the system can respond to various time-based requests, but the device complexity increases

Engineering Contradiction:

Improveability to select appropriate clock based on operation contentVSAvoidcomplexity of selection and recording mechanisms

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The selection means acts as an intermediary between the multiple clocks and the recording/transmission/operation control functions. This intermediary component intelligently routes the appropriate clock's time information to the specific function being executed, managing the complexity of having multiple clocks while maintaining system organization and ease of operation

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12454440B2Maintenance device and elevator device

Publication Date: 2025.10.28 MITSUBISHI ELECTRIC CORP

AI summary

A maintenance device (18) includes, for example, a clock (20), a clock (21), a selection unit (23), and a recording unit (25). The clock (20) outputs time information. The clock (21) outputs time information. The selection unit (23) selects at least one of the clock (20) or the clock (21) as a clock to be used. The recording unit (25) records elevator information by adding time information from the selected clock to the elevator information. The selection unit (23) selects the clock to be used according to the content of the elevator information to be recorded by the recording unit (25).