Vehicle Body Part Unit With Integrated Fastening Module Assembly
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Solution Overview
Problem
Existing vehicle body assembly structures face inefficiencies due to the need for manual tightening of multiple nuts and bolts, requiring workers to hold parts with one hand and tools with the other, and the process of welding bolts to brackets is cumbersome, complicating assembly and increasing manufacturing difficulty.
Innovation Solution
A part unit with a fastening module comprising a screw bushing part, bolt part, and nut part that allows for linear movement and pressurized rotation to couple inner and outer surfaces of the vehicle body, enabling assembly with one hand and improving tolerance and assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of bolts and nuts are used to fasten parts to the vehicle body, then the fastening reliability is improved, but the assembly complexity and labor intensity increase significantly
Solution Approach 1:
The patent combines multiple fastening operations (inserting bolts, threading nuts, tightening) into a single integrated fastening module that is pre-assembled on the bracket. The fastening module includes multiple bolts and nuts already positioned and partially assembled, allowing the worker to install the entire module as one unit rather than handling each fastener separately. This merging of fastening elements into a unified module reduces assembly complexity while maintaining the required fastening reliability through the multiple connection points.
2Manufacturing precision
If multiple separate fastening operations are performed manually, then the fastening precision can be controlled, but the assembly time and labor cost increase
Solution Approach 1:
The patent applies preliminary action by pre-assembling the fastening module on the bracket before installation to the vehicle body. The bolts are welded to the bracket in advance, and the nuts are pre-positioned or pre-threaded onto the bolts during bracket manufacturing. This preliminary preparation of fastening elements eliminates the need for time-consuming on-site assembly operations, reducing assembly time while ensuring precision through controlled pre-assembly conditions. The fastening module is ready for immediate installation, converting multiple sequential operations into a single rapid mounting action.
3Strength
If brackets with welded bolts are manufactured separately, then the structural strength is improved, but the manufacturing difficulty and cost increase
Solution Approach 1:
The patent segments the vehicle body assembly into modular components: the bracket as a separate unit with pre-installed fastening modules, and the vehicle body as another unit. The bracket is manufactured independently with welded bolts and pre-assembled fastening elements, allowing for specialized production and quality control. This segmentation enables the bracket to be produced in batches with optimized welding processes for structural strength, while the final assembly to the vehicle body becomes a simpler mechanical installation. The modular bracket design separates the complex welding operations from the final assembly, improving manufacturing ease without compromising structural integrity.
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 enhances assembly quality and reduces costs by simplifying the assembly process, allowing workers to fasten parts more efficiently and reducing the need for separate welding steps.
Implementation Method 1
a bolt part fitted toward a front from a rear of the screw bushing part; and a nut part fastened to a male screw rod of the bolt part protruding forward, wherein the nut part passes from an inside to an outside of the vehicle body part, and then the nut part and the screw bushing part closely couple inner and outer surfaces of the vehicle body part by a pressurization rotation of the bolt part
Data Source
AI summary
A part unit and a vehicle body assembly structure are disclosed. In particular, a part unit and a vehicle body assembly structure with improved workability of assembling parts into a vehicle body of a curved surface are disclosed.