Vehicle Shift Device Restriction Mechanism
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Solution Overview
Problem
Existing shift devices for vehicles lack the ability to effectively restrict the movement of a shift body across multiple shift positions, often requiring complex configurations to achieve this functionality.
Innovation Solution
A shift device incorporating a restriction section with a first and second restriction member, actuated by a rotating member, which allows for the restriction of the shift body's movement across multiple positions through a simple configuration, enabling precise control and locking within specific ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a first stopper is actuated to restrict rotation of a first clutch gear at a shift position, then the shift body can be restricted at a specific shift position, but the ability to restrict movement across multiple shift positions is lost
Solution Approach 1:
The first restriction member is designed to perform multiple functions: it can restrict the shift body at a single shift position when actuated alone, and it can restrict the shift body across multiple shift positions when actuated in conjunction with the second restriction member. This multi-functionality resolves the contradiction by allowing the same component to adapt to different restriction needs.
Solution Approach 2:
The restriction system transitions from a static single-position restriction mechanism to a dynamic multi-position restriction mechanism. The first and second restriction members can be selectively actuated to change the restriction range, enabling the system to adapt between single-position and multi-position restriction modes based on operational requirements.
2Adaptability or versatility
If multiple restriction members are added to restrict movement across multiple shift positions, then the restriction capability is improved, but the device complexity increases
Solution Approach 1:
The first and second restriction members are integrated into a unified restriction section that works cooperatively. The actuation mechanisms for both restriction members are coordinated through the rotating member, merging multiple restriction functions into a single integrated system rather than separate independent mechanisms, thereby reducing overall complexity.
Solution Approach 2:
The first and second restriction members are disposed in a nested or superimposed arrangement where one restriction member can be positioned within or alongside the other. This nesting allows both restriction members to occupy minimal space and work together efficiently, reducing the overall complexity and size of the restriction section.
3Device complexity
If a rotating member is used to actuate both restriction members, then the actuation mechanism is simplified, but the precision of individual restriction positioning may be compromised
Solution Approach 1:
The rotating member is segmented into distinct actuation portions: a first actuation portion that selectively actuates the first restriction member and a second actuation portion that selectively actuates the second restriction member. This segmentation allows each portion to independently control its respective restriction member, maintaining precise positioning control despite the unified rotating actuation mechanism.
Data Source
AI summary
A shift device for a vehicle, the shift device comprising: a shift body that is moved to change a shift position; and a restriction section provided with a first restriction member and a second restriction member, configured such that actuation of the first restriction member restricts movement of the shift body to a plurality of shift positions or within a shift range, and configured such that actuation of the first restriction member and the second restriction member, or actuation of the second restriction member alone, restricts movement of the shift body to a shift position.