Automotive Shift Lever Knob Rod Electrical Connection
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Solution Overview
Problem
The assembly process of automotive transmission shift levers is complicated by the need for separate mechanical and electrical coupling of the knob and rod, which increases working time and risks damage to printed circuit boards due to static electricity and erroneous assembly.
Innovation Solution
A shift lever design that allows for simultaneous mechanical and electrical coupling of the knob and rod through a flexible conductive member inserted into the rod, eliminating the need for additional assembly processes and protecting the conductive member for improved spatial utilization and assembly properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connectors are separately connected for electrical connection between knob and rod, then electrical signal transmission is achieved, but assembly time increases and risk of damage increases
Solution Approach 1:
The patent combines mechanical coupling and electrical connection into a single integrated connector assembly. The connector includes both mechanical coupling structures (protrusions and recesses) and electrical contact elements (conductors and contacts) that are assembled simultaneously in one operation, eliminating the need for separate mechanical assembly and electrical connection steps.
Solution Approach 2:
The connector is designed as a multi-functional component that simultaneously performs mechanical coupling (holding the knob and rod together) and electrical signal transmission (transmitting signals from the release button). This universal design allows a single component to fulfill multiple functions that previously required separate components and assembly steps.
2Reliability
If connectors are separately connected for electrical connection, then electrical signal transmission is achieved, but risk of static electricity damage and erroneous assembly increases
Solution Approach 1:
By integrating mechanical and electrical functions into a single connector assembly, the patent reduces the number of separate connection operations. This minimizes exposure to static electricity during assembly and reduces opportunities for erroneous assembly, as the integrated design provides built-in guidance for proper alignment and connection.
3Productivity
If flexible conductive member is inserted into rod, then spatial utilization is improved and assembly is simplified, but conductive member needs protection
Solution Approach 1:
The flexible conductive member is nested within the hollow interior of the rod, with its outer surface contacting the inner surface of the rod for protection. This nesting arrangement protects the conductive member from external damage while utilizing the rod's internal space, and simplifies assembly as the conductive member is inserted through the rod in a single motion.
Data Source
AI summary
A shift lever for a vehicle is provided that includes a knob and a rod which is detachably coupled to the knob in a one touch manner. A first connector and a second connector are disposed at the knob and the rod, respectively, and electrically connected to each other when the knob and the rod are coupled. The first connector is installed in the knob, and the second connector is detachably fixed at a tip side of the rod. A connector housing detachably fixes the second connector at the tip side of the rod, and a conductive member which has a first end fixed to the second connector, and is inserted and accommodated into the rod.