Swiveling Locking Catch for Battery Retaining Protrusion
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Solution Overview
Problem
The reliability of bolted connections between energy accumulators and vehicle chassis in electric or hybrid vehicles deteriorates due to wear, especially during frequent replacements, and requires complex safety measures.
Innovation Solution
A fixing device with a retaining protrusion and swiveling locking catch that moves along a track, providing a secure form-fit connection by engaging behind the protrusion, allowing for simple and quick replacement with minimal wear and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bolted connection is used to fix the energy accumulator to the carrying structure, then the connection provides secure fixing, but the reliability deteriorates due to wear during frequent replacements
Solution Approach 1:
The connection system is segmented into a retaining protrusion on the energy accumulator and a locking catch on the carrying structure. The locking catch can be quickly released and re-engaged without damaging the retaining protrusion, allowing frequent replacements without wear accumulation on critical components.
Solution Approach 2:
The locking catch is designed to be movable between a locked position (engaging behind the retaining protrusion) and a release position (swiveled away from the movement track). This dynamic mechanism allows rapid replacement while maintaining secure connection during operation.
2Reliability
If a bolted connection with safety-critical character is used, then the connection is secure, but the installation complexity increases
Solution Approach 1:
The complex safety documentation and detailed installation procedures associated with bolted connections are replaced by a simplified mechanical locking system. The inherent mechanical advantage of the locking catch engaging behind the retaining protrusion provides safety without requiring complex documentation or procedures.
3Productivity
If frequent battery replacements are performed, then the energy accumulator can be replaced when needed, but wear on the thread increases
Solution Approach 1:
The locking catch is pre-positioned on the carrying structure, ready to engage with the retaining protrusion. During replacement, the locking catch is simply swiveled to the release position, allowing the energy accumulator to be removed and replaced without any wear-inducing threading or unthreading actions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables rapid and safe battery replacement with reduced wear on the connection points, eliminating the need for complex documentation and ensuring reliable locking, thus enhancing the simplicity and safety of the battery fixing process.
Implementation Method 1
a relative movement of the retaining protrusion to the locking catch is provided along a movement track in the direction of an end position, wherein the locking catch can be swiveled about a swivel axis between a release position and a locked position such that in the release position the locking catch is outside the movement track of the retaining protrusion and in the locked position the locking catch protrudes into the movement track of the retaining protrusion and there engages behind the retaining protrusion
Data Source
AI summary
A fixing device for releasable fixing an electrical energy accumulator to a carrying structure of a motor vehicle includes a retaining protrusion and a locking catch which are provided on the energy accumulator and on the carrying structure (or vice versa). To fix the energy accumulator to the carrying structure, a relative movement of the retaining protrusion to the locking catch is provided along a movement track in the direction of an end position, in which the locking catch can be swiveled between a release position and a locked position such that in the release position the locking catch is outside the movement track of the retaining protrusion and in the locked position the locking catch protrudes into the movement track of the retaining protrusion and there engages behind the retaining protrusion when the retaining protrusion is in the end position.