Detachable Backrest-Seat Mechanism for Stand-Up Forklift Platforms
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Solution Overview
Problem
Conventional backrest mechanisms for stand-up rider operator platforms in industrial vehicles impede operator movement and do not provide sufficient flexibility in operating positions based on the operator's physical condition or fatigue, as they are designed for seated or backrest use only.
Innovation Solution
A backrest mechanism with a support portion that can function as either a backrest or a seat, detachable and rotatable, and located on the rear side of the operator's platform to avoid obstruction, allowing operators to choose their support method based on their condition and fatigue levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the backrest mechanism is located in the operator's platform, then the operator can receive support, but the operator's movement is impeded
Solution Approach 1:
The backrest mechanism is extracted from the operator's platform and relocated to the rear side of the vehicle. The support holder is positioned on the rear side from the operator's platform, allowing the support portion to be detached from the platform area. This extraction resolves the contradiction by providing operator support while eliminating the obstruction to movement on the operator's platform.
2Reliability
If the backrest mechanism provides both backrest and seat portions simultaneously, then operator support is comprehensive, but the mechanism does not provide flexible operating positions
Solution Approach 1:
The support portion is segmented into a backrest portion and a seat portion that can be independently positioned. The backrest portion and seat portion are separated by a predetermined interval when both are in use, allowing the operator to selectively use either portion or both portions simultaneously. This segmentation enables flexible operating positions adapted to different operator conditions and fatigue levels.
Solution Approach 2:
The support portion is designed to be rotatable relative to the support holder, and the backrest portion can be rotated relative to the seat portion. This dynamic configuration allows the operator to adjust the relative positions and orientations of the backrest and seat portions, providing adaptable support positions based on operator needs and fatigue conditions.
3Device complexity
If the support portion is fixed in position, then the structure is simple, but the operator cannot adjust to different fatigue levels
Solution Approach 1:
The support portion is designed with rotational capability relative to the support holder, and the backrest portion can rotate relative to the seat portion. These dynamic features allow the operator to adjust the configuration to different fatigue levels and operating conditions while maintaining relatively simple mechanical structures using rotation joints and positioning mechanisms.
Data Source
AI summary
A backrest mechanism for a stand-up rider operator's platform in an industrial vehicle, in which an operator operates the vehicle while standing, has a support portion and a support holder. The support portion has a backrest portion for supporting a back of the operator and a seat portion for at least supporting buttocks of the operator. The support portion supports the operator by either of the backrest portion and the seat portion. The support holder is located on a rear side of the vehicle from the operator's platform. The support holder holds the support portion so that the support portion is detachable from the support holder.