Elevator Safety Gear Assembly With Telescopic Synchronization Rod

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Solution Overview

Problem

Existing safety gear assemblies for elevators require complex and space-consuming manufacturing processes due to the need for custom-made synchronization rods, which are often welded, leading to inefficiencies in adapting to different elevator models.

Innovation Solution

A safety gear assembly with a synchronization rod composed of telescopic portions, allowing for customizable and adjustable length adjustments through through holes and elongated slots, eliminating the need for welding and enabling quick adaptation to various elevator models.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If synchronization rods are manufactured ad hoc for each elevator model via welding, then the safety gear assembly can be customized for specific dimensions, but the manufacturing process becomes complex and time-consuming

Engineering Contradiction:
Improveadaptability to different elevator modelsVSAvoidmanufacturing process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The synchronization rod is divided into multiple modular sections that can be connected through telescopic mechanisms. Each section can be independently manufactured and then assembled to achieve the required total length, eliminating the need for complex welding operations while maintaining adaptability to different elevator dimensions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The synchronization rod incorporates telescopic portions that allow dynamic adjustment of the rod's effective length. This enables a single standardized rod design to adapt to various elevator car dimensions by extending or retracting the telescopic sections, replacing the need for custom-manufactured rods for each model.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If multiple models of synchronization rods are manufactured and stored in warehouse, then adaptability to different elevator models is achieved, but warehouse space requirements increase considerably

Engineering Contradiction:
Improvecoverage of elevator modelsVSAvoidwarehouse space
Core Design Contradiction:
Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

A universal synchronization rod design is created that can serve multiple elevator models through its telescopic adjustment capability. Instead of maintaining separate inventory for each model, a single standardized rod design can be configured to fit various dimensions by adjusting the telescopic sections, dramatically reducing warehouse space requirements.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The synchronization rod's effective length parameter can be changed on-demand through telescopic adjustment rather than manufacturing different fixed-length rods. This allows a single rod design to cover a range of dimensions by changing its extended or retracted state, eliminating the need to store multiple variants.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If synchronization rods are made with fixed length for each model, then manufacturing precision is maintained, but adaptability to new elevator models is reduced

Engineering Contradiction:
Improvedimensional accuracyVSAvoidflexibility for new models
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The synchronization rod transitions from a static fixed-length design to a dynamic telescopic design. The telescopic portions allow the rod to achieve precise lengths for different applications through controlled extension or retraction, maintaining manufacturing precision while providing flexibility for new elevator models without requiring redesign.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4624404A1Safety gear assembly for an elevator
Publication Date: 2025.10.01 WITTUR HLDG GMBH
  • EP4624404A1 patent drawingFigure 1~2
  • EP4624404A1 patent drawingFigure 3~4
  • EP4624404A1 patent drawingFigure 5~6

AI summary

A safety gear assembly (100) for an elevator, comprising: at least two safety gears (101); a trigger assembly (110) for triggering the safety gears (101); said trigger assembly (110) comprising: - a support frame (111); - a synchronization rod (1) having elongated development according to a longitudinal direction and mounted on the support frame (111); said synchronization rod (1) being operatively connected to both the safety gears (101) so that it will activate or deactivate both the safety gears synchronously. The synchronization rod (1) comprises: - a first portion (2) having elongated development according to a first direction; - a second portion (3) mounted on the first portion (2) so as to be able to slide along a direction substantially parallel to said first direction.