Lateral Mower Height Adjustment Linkage
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Solution Overview
Problem
Conventional riding type mowers face difficulty in adjusting the lower limit of the mower unit due to the placement of the adjustment knob, which is linked to the stopper and requires operation below the driving seat, making it hard to operate effectively.
Innovation Solution
A riding type mower design featuring a lower limit adjustment element located laterally of the driver's seat, which is rotatable to adjust the stopper, and a linking mechanism connecting this element with the stopper, allowing for easier adjustment of the mower unit's vertical position without the need for the adjustment knob to be below the seat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the adjustment knob is linked to the stopper and disposed below the driving seat, then the stopper can be adjusted to set the lower limit, but the adjustment element becomes difficult to operate and lower limit adjustment becomes difficult to perform
Solution Approach 1:
The patent relocates the adjustment element from a vertical position below the driving seat to a lateral position beside the driving seat. This spatial repositioning in a different dimension (from vertical to lateral access) allows the operator to easily reach and operate the adjustment element while maintaining its functional connection to the stopper mechanism through the linking mechanism.
2Adaptability or versatility
If the adjustment knob is disposed below the driving seat, then the stopper can be adjusted, but the adjustment element is difficult to reach and operate
Solution Approach 1:
The patent introduces a linking mechanism that acts as an intermediary between the adjustment element and the stopper. This linking mechanism (comprising a link rod and connecting members) transmits the rotational motion from the adjustment element laterally positioned beside the driving seat to the stopper, enabling the adjustment functionality while improving accessibility.
3Ease of operation
If the adjustment element is positioned for easy access, then operational convenience is improved, but the linkage to the stopper mechanism becomes more complex
Solution Approach 1:
The patent segments the adjustment system into distinct functional components: the adjustment element (knob), the linking mechanism (link rod with connecting members), and the stopper assembly. This segmentation allows the adjustment element to be positioned for easy lateral access while the linking mechanism efficiently transmits motion, and the stopper performs its function independently, thereby managing overall system complexity through modular design.
Data Source
AI summary
A riding type mower comprises: a plurality of wheels including at least one driven wheel; a vehicle body supported by the plurality of wheels; a driver's seat supported by the vehicle body; a mower unit located below the vehicle body; a suspension mechanism for vertically movably supporting the mower unit from the vehicle body, the suspension mechanism having a restraint member operatively connected to the suspension mechanism; an operation mechanism for operating the suspension mechanism; a stopper for setting a lower limit for a vertical position of the mower unit to define a cutting height by abutment against the restraint member, the stopper is adapted to be rotated to change the lower limit; a lower limit adjustment element located laterally of the driver's seat and rotatable to rotate the stopper; and a linking mechanism for operatively connecting the lower limit adjustment element with the stopper.