Rotational Angle Limiting Device for Vehicle Steering
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Solution Overview
Problem
Conventional vehicles with rotational angle limiting devices face space constraints due to the arrangement of the fixed disk, which affects the disposition of suspension units and the operation of the reclining unit.
Innovation Solution
The rotational angle limiting device is redesigned with a limiting unit comprising a limiting member on the side tube and stop members on the supporting arm of the suspension unit, allowing for improved space applicability and unobstructed operation of the reclining unit by limiting the rotational angle of the main steering rod without increasing the fixed disk area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed disk with limiting blocks is used to limit the rotational angle of the main steering rod, then the rotational angle can be effectively limited, but the area of the fixed disk must be increased, adversely affecting the arrangement of suspension units and operation of the reclining unit
Solution Approach 1:
The patent extracts the rotational angle limiting function from the fixed disk by introducing separate limiting units with limiting members and stop members. This allows the fixed disk to maintain a small area while the limiting function is performed by distributed components on side tubes and supporting arms.
Solution Approach 2:
The patent segments the rotational angle limiting function into multiple independent limiting units, each with its own limiting member and stop members. This segmentation allows the limiting function to be distributed across different locations rather than requiring a large fixed disk area.
2Reliability
If the fixed disk area is increased to accommodate limiting blocks, then rotational angle limiting is achieved, but the arrangement of suspension units and operation of the reclining unit are adversely affected
Solution Approach 1:
The patent extracts the limiting function from the fixed disk area, allowing the reclining unit to operate without obstruction. The limiting members are placed on side tubes and stop members on supporting arms, separating the limiting function from the fixed disk area that would interfere with reclining operation.
3Reliability
If limiting blocks are disposed on the fixed disk, then rotational angle limiting is achieved, but the arrangement of suspension units is adversely affected
Solution Approach 1:
The patent segments the limiting function into multiple limiting units distributed on side tubes and supporting arms. This segmentation allows suspension units to be arranged more freely without being constrained by a large fixed disk, improving ease of manufacture and assembly.
Solution Approach 2:
The patent extracts the limiting function from the fixed disk and implements it through separate limiting units on side tubes and supporting arms. This extraction allows suspension units to be arranged independently without being adversely affected by limiting block placement on a large fixed disk.
Data Source
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AI summary
A vehicle includes a rotational angle limiting device (6) for limiting the rotational angle of a main steering rod (22). The rotational angle limiting device (6) includes at least one limiting unit (61). The limiting unit (61) includes a limiting member (611) disposed fixedly on one of two side tubes (31), and two stop members (612) disposed fixedly on a supporting arm (42) of a corresponding one of two suspension units (4) and located respectively to two sides of the limiting member (611) such that, when the main steering rod (22) rotates in a direction, the limiting member (611) comes into contact with one of the stop members (612), and when the main steering rod (22) rotates in an opposite direction, the limiting member (611) comes into contact with the other one of the stop members (612).