Die-Cast Lower Dash Structure for Faster Bulkhead Joining
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Solution Overview
Problem
Existing methods for connecting components of a motor vehicle bulkhead require high labor and time expenditure, leading to inefficiencies in production and logistics.
Innovation Solution
A one-piece die-cast light metal design for the inner partial A-pillar, partial bulkhead, and side member front, connected via a joining method, allowing for easier assembly and reduced manual steps while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple separate components (lower crossmember, bulkhead element, upper reinforcing member) are used and connected by welding, screwing, adhesive bonding or clinching, then the structural integrity is maintained, but the labor and time expenditure for connecting the individual parts increases significantly
Solution Approach 1:
The patent merges the lower crossmember, bulkhead element, and upper reinforcing member into a single integrated bulkhead component. This consolidation eliminates the need for separate connection operations (welding, screwing, adhesive bonding, or clinching) between individual parts, thereby significantly reducing labor and time expenditure while maintaining structural integrity through the unified design
2Stability of the object's composition
If multiple separate components are assembled before installation in the vehicle body, then the structural requirements are met, but the production time and logistics costs increase
Solution Approach 1:
The patent combines multiple structural components into a single bulkhead part that is manufactured as one piece. This eliminates the need for preliminary assembly operations and reduces the number of parts that need to be handled, stored, and installed, thereby improving productivity and reducing production time while satisfying all structural requirements
3Productivity
If a one-piece die-cast light metal design is used for the inner partial A-pillar, partial bulkhead, and side member front, then the production time is reduced and logistics costs are lowered, but the structural complexity of the single component increases
Solution Approach 1:
The patent segments the lower dash structure into two separate one-piece part-lower dashes (left and right sides), each manufactured independently through die-casting. This segmentation allows for simplified manufacturing of each side while maintaining overall structural integrity through the joining of the two parts, thereby reducing production time and complexity compared to a single complex integrated component
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
This approach reduces production time, lowers logistics costs, and achieves a lightweight yet stiff structure that absorbs crash energy comparable to steel, with improved manufacturing efficiency and tolerance compensation.
Implementation Method 1
achieves a lightweight yet stiff structure that absorbs crash energy comparable to steel
Data Source
AI summary
A lower dash for a motor vehicle that extends in a y-direction transversely to the direction of travel for the motor vehicle and separates a passenger compartment and a front compartment of the motor vehicle. The lower dash includes a partial bulkhead, an inner partial A-pillar arranged laterally with respect to the patrial bulkhead, and a side member front including a connector, each on the left and right sides in the vehicle direction. The inner partial A-pillar, the partial bulkhead, and the side member front arranged on the left side are designed as a one-piece part-lower dash made of die-cast light metal, and the inner partial A-pillar, the partial bulkhead, and side member front on the right side are designed as a one-piece part-lower dash made of die-cast light metal. The one-piece part-lower dash arranged on the left-hand and right-hand sides are connected to one another via a joining.