Backlash-Reducing Intermediate Gear for Steering Shaft Angle Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing boat drive systems suffer from inaccurate angle displays due to play in the transmission of rotational movement between the control shaft and angle sensor, leading to steering inaccuracies.
Innovation Solution
A kinematic connection between the control shaft and angle sensor is established through an intermediate wheel that reduces play by meshing with a transmitter wheel and a slave wheel, designed as gears with elastically braced disk wheels, allowing for precise angle indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a direct kinematic connection between control shaft and angle sensor is used, then the device complexity is reduced, but play in the transmission causes inaccurate angle display
Solution Approach 1:
A play-reducing intermediate gear is introduced as a mediator between the control shaft and the angle sensor. This intermediate gear with divided disks and elastic bracing eliminates circumferential play in the transmission, thereby improving angle display accuracy without requiring direct connection between control shaft and sensor
2Measurement precision
If a play-reducing intermediate gear with divided disks is used, then circumferential play is eliminated, but the device complexity increases
Solution Approach 1:
The intermediate gear is divided into two disks that are displaceable relative to each other in the circumferential direction. This segmentation allows the gear to eliminate play through elastic bracing while maintaining a manageable structural complexity through modular design
3Ease of manufacture
If tolerance-related deviations in sensor and slave gears are present, then manufacturing is easier, but play compensation is insufficient
Solution Approach 1:
The elastic bracing of the divided intermediate gear disks enables dynamic parameter adjustment in the transmission system. The elastic elements allow the gear disks to displace and self-adjust, compensating for tolerance deviations in manufacturing and maintaining accurate angle display despite standard manufacturing tolerances
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution eliminates play between the gears, ensuring accurate angle detection and compensation for tolerance-related deviations, resulting in improved steering precision.
Implementation Method 1
the intermediate gear is divided and has two disks (disk gears) which are displaceable relative to one another in the circumferential direction and which are elastically braced in the circumferential direction, preferably by compression springs acting in the circumferential direction
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
The invention relates to a device for detecting the angular position of a steering shaft (8), in particular for a steering unit of a boat drive (4, 5), by means of an angle sensor (13). According to the invention, the steering shaft (8) and the angle sensor (13) are kinematically interconnected by means of a backlash-reducing intermediate gear (11, 18) that engages with a master gear (10) of the steering shaft (8) and a slave gear (12) of the angle sensor (13).