Shift Lever Knob Link Mechanism for Assembly Alignment
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Solution Overview
Problem
The existing shift lever devices face difficulties in efficiently and accurately fitting the shift knob to the shift lever due to the need for precise alignment and force application, which is challenging for non-experts and time-consuming, potentially damaging components if not done correctly.
Innovation Solution
A shift lever device with a stationary member, a turnable shift lever, an engaging member, and a knob with a fitting hole and link lever mechanism that allows for easy alignment and engagement of the shift lever into the knob, utilizing a detection mechanism to ensure proper positioning and reduce the required force for fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the shift button is pushed to insert the shift lever into the shift knob, then the shift lever can be fitted to the shift knob, but it is difficult and time-consuming to maintain the shift button in a proper position against spring force, reducing assembly efficiency
Solution Approach 1:
The link lever is pre-positioned in the fitting hole before the shift lever insertion process begins. This preliminary positioning ensures that when the shift lever is inserted, the link lever is already in the correct position to engage with the engaging member, eliminating the need for operators to manually maintain button position during assembly and significantly improving assembly efficiency
Solution Approach 2:
The link lever acts as an intermediary component between the shift button and the engaging member. It transmits the button's movement to the engaging member while being guided by the fitting hole, ensuring proper positioning and force transmission without requiring direct manual control of the button during the fitting process
2Manufacturing precision
If the shift button is pushed with insufficient force, then the shift lever may not be properly inserted, but excessive pushing force may block the upper end of the block from being inserted between the slopes
Solution Approach 1:
The link lever serves as a mechanical intermediary that guides the movement of the engaging member during insertion. By providing a guided path through the fitting hole, it ensures that the engaging member moves along the correct trajectory and engages properly with the block, preventing both insufficient insertion and excessive force application that could cause blocking or damage
Solution Approach 2:
The link lever is pre-positioned within the fitting hole before assembly begins, creating a predetermined guided path for the engaging member. This preliminary setup ensures that during the fitting process, the engaging member automatically follows the correct insertion path, eliminating the need for operators to precisely control pushing force and preventing both under-insertion and over-insertion issues
Data Source
AI summary
A shift lever device which includes: a shift lever turnably fitted on a stationary member; an engaging member for engagement of the shift lever with the stationary member; and a knob fitted on the shift lever. The engaging member is moved toward its distal end to disengage from the stationary member. The knob includes a knob body provided with a fitting hole into which the shift lever is inserted together with a first engaging part of the engaging member, a button pivoted on the knob body, and a link lever connected to the button, having a second engaging part for engagement with the first engaging part. When the shift lever is inserted into the fitting hole and the distal end thereof reaches a predetermined position therein, the button is operated to have the second engaging part engaged with the first engaging part.