Vehicle Shift Device Outer Side Strength via Restricting Portions
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Solution Overview
Problem
Existing vehicle shift devices face challenges in enhancing the strength of the outer side portion in the second direction of the shift body, particularly in restricting movement between specific shift positions, leading to potential interference and reduced accuracy in positioning.
Innovation Solution
The shift device incorporates a pair of restricting portions that limit movement of the shift body's outer side surfaces in the second direction, allowing the shift body to avoid interference and increasing its strength, along with a displacement restricting portion to enhance positioning accuracy and an outer restricting portion to limit movement beyond the range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a partitioning plate is used to restrict movement of the shift lever, then movement between specific shift positions is restricted, but the strength of the outer side portion of the shift body is reduced
Solution Approach 1:
The invention transitions from using a partitioning plate that restricts movement by interfering with the inner side surface to using restricting portions that engage with outer side surfaces of the shift body. This dimensional change allows the restricting portions to be positioned on the outer periphery, avoiding interference with the inner side surface and maintaining structural strength while still achieving movement restriction between shift positions.
2Reliability
If the shift body is designed to avoid restricting portions, then movement is restricted, but the avoiding portion must be larger reducing overall strength
Solution Approach 1:
The invention applies local quality by creating a specific avoidance portion only where necessary for movement restriction, rather than requiring the entire outer side surface to be weakened. The restricting portions are positioned at specific locations on the outer periphery, allowing the avoidance portion to be localized and minimal, thus preserving the overall strength of the shift body while achieving the required movement restriction function.
Data Source
AI summary
A strength of an outer side portion in a second direction of a shift body is increased. In a shift device, when a lever is placed in an ‘M’ position, a right avoidance hole of the lever avoids interference with a right restricting portion, rotational movement of a left restricting surface of the lever is restricted by a left restricting portion, and an operation to rotationally move the lever towards the right side is restricted. Furthermore, when the lever is placed in a ‘D’ position, a left avoidance hole of the lever avoids interference with the left restricting portion, rotational movement of a right restricting surface of the lever is restricted by the right restricting portion, and an operation to rotationally move the lever towards the left side is restricted. The right avoidance hole and the left avoidance hole can be made smaller, so that the strength of both outer side portions in a lateral directions of the lever can be increased.