Rear Holder Rib Design for Motor Cable Shielding
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Solution Overview
Problem
The existing cable assembly process for electronic power steering motors is inconvenient and costly, with challenges in assembly, misassembly reprocessing, and high manufacturing costs due to the need for expensive electromagnetic wave shielding materials.
Innovation Solution
A rear holder design featuring a body part with a cable hole formed by coupling two separate bodies with grooves and a protruding rib, which simplifies assembly, reduces manufacturing costs, and prevents gaps between the cable and the holder, while also providing effective electromagnetic wave shielding by configuring only one cable with a shield layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a tube is disposed to surround the cable to block electromagnetic waves, then electromagnetic wave shielding is improved, but the assembly process becomes more complex and manufacturing costs increase
Solution Approach 1:
The patent extracts the electromagnetic wave shielding function from a separate tube component and integrates it directly into the rear holder body through a rib structure. This eliminates the need for a separate tube component and simplifies the assembly process while maintaining shielding effectiveness.
Solution Approach 2:
The patent merges the shielding function with the rear holder structure by forming a rib that protrudes into the cable hole. This combines multiple functions (structural support and electromagnetic shielding) into a single integrated component, reducing assembly complexity.
2Object-affected harmful factors
If a tube is disposed to surround the cable for electromagnetic wave blocking, then electromagnetic wave shielding is improved, but manufacturing costs increase
Solution Approach 1:
The patent removes the separate tube component and extracts its shielding function to be implemented through the rib structure integrated into the rear holder, thereby reducing the number of parts and manufacturing costs.
Solution Approach 2:
The rib structure serves multiple functions: it provides structural support for the cable and simultaneously acts as an electromagnetic wave shield. This multi-functionality reduces the need for additional shielding components and lowers manufacturing costs.
3Ease of operation
If spacing space is necessary between the rear holder and the tube, then assembly is possible, but the tube must be installed at the cable portion in the spacing space, increasing complexity
Solution Approach 1:
The patent eliminates the separate tube component entirely, removing the need for spacing space and the complex assembly sequence of installing the tube on the cable before insertion into the rear holder.
Solution Approach 2:
Instead of installing the tube on the cable first and then inserting it into the rear holder, the patent inverts the approach by integrating the shielding function directly into the rear holder structure, allowing the cable to be inserted directly without preliminary tube installation.
4Object-affected harmful factors
If shield members are used to form the electromagnetic wave shield layer, then electromagnetic wave shielding is improved, but manufacturing costs increase
Solution Approach 1:
The patent replaces expensive shield members with a simple rib structure made from the same material as the rear holder. This uses a cost-effective approach to achieve shielding without requiring additional expensive materials.
Solution Approach 2:
The rib structure serves dual purposes as both a structural component and an electromagnetic wave shield, eliminating the need for separate expensive shielding materials while maintaining shielding effectiveness.
Data Source
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AI summary
The present invention may provide a rear holder comprising: a first body comprising a first groove; a second body comprising a second groove; a coupling portion for coupling the first body and the second body such that the first groove and the second groove are aligned, thereby constituting a cable hole; and a rib, wherein the rib is arranged so as to protrude along at least one selected from the boundary between the front surface of the first body and the first groove and the boundary between the front surface of the second body and the second groove.