Shock Absorber Mounting Unit With Integrated Tapping Nut
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Solution Overview
Problem
Conventional shock absorber mounting units for vehicles require an additional tapping process, increasing manufacturing costs and time, and can result in defective products due to non-uniform material distribution and reduced strength from die-casting, making it difficult to monitor defects and distribute loads effectively.
Innovation Solution
A mounting unit for shock absorbers that includes a shock absorber housing with a mounting module featuring multiple mounting holes and a tapping nut, where the mounting module is temporarily assembled using hook protrusions and a fixing nut, eliminating the need for additional tapping and enhancing stiffness and load distribution, and allowing for easier assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the shock absorber housing is manufactured by die-casting process, then manufacturing efficiency is improved, but strength is deteriorated by bubbles and non-uniformity of materials
Solution Approach 1:
The invention divides the shock absorber housing into multiple modular sections (front housing, rear housing, intermediate housing) that can be manufactured separately using die-casting and then assembled together. This segmentation allows each module to be optimized for manufacturing efficiency while the overall structure achieves required strength through proper joining methods.
Solution Approach 2:
The invention employs composite construction by combining die-casted metal housing modules with reinforced mounting portions. The mounting portions use materials and structures specifically designed to compensate for the inherent weaknesses of die-casting, creating a composite structure that achieves both manufacturing efficiency and structural strength.
2Reliability
If additional tapping process is performed to form screw thread at shock absorber housing, then engagement reliability is improved, but manufacturing cost and time are increased
Solution Approach 1:
The invention incorporates threaded mounting portions directly into the housing modules during the die-casting process itself, rather than performing separate tapping operations afterward. This preliminary action integrates thread formation into the primary manufacturing step, eliminating additional processing time while ensuring reliable engagement through properly formed threads.
Solution Approach 2:
The invention merges the housing formation and thread creation into a single die-casting operation. By integrating these two functions into one manufacturing process, the invention eliminates the need for separate tapping steps, reducing both manufacturing time and cost while maintaining engagement reliability.
3Strength
If ribs are formed at shock absorber housing to reinforce stiffness, then local stiffness is improved, but uniformity of thickness is reduced
Solution Approach 1:
The invention segments the shock absorber housing into multiple modules, each with optimized thickness and reinforcement structures. By dividing the housing, each module can maintain more uniform thickness while achieving required stiffness through modular design and assembly, avoiding the need for complex ribs that would create thickness variations in a single-piece construction.
Data Source
AI summary
A mounting unit of a shock absorber for a vehicle is disclosed. A mounting unit of a shock absorber for a vehicle that fixes an upper portion of a shock absorber connected to wheels to a vehicle body according to an exemplary embodiment of the present invention may include a shock absorber housing mounted to the vehicle body; a mounting module disposed in the shock absorber housing, and at least two mounting hole is formed at the mounting module; a tapping nut engaged through a mounting hole of the mounting module in the shock absorber housing; and a fixing nut engaged to an end portion of the tapping nut protruded to outside of the shock absorber housing and fixing the mounting module to the shock absorber housing; the mounting module and fixing nut are temporarily assembled to the shock absorber housing through a temporarily assembly apparatus and engaged to the tapping nut.