Damper Rod Guide Claw Assembly for Sealing Component Integration
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Solution Overview
Problem
The conventional damper assembly process is complicated due to the sequential insertion of the rod guide, oil seal, and seal holder into the cylinder, increasing installation time and effort.
Innovation Solution
The damper design incorporates claws on the rod guide to hold the seal holder, allowing for a pre-assembled rod guide assembly that includes the oil seal and seal holder, which can be inserted as a single unit into the cylinder, simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rod guide, oil seal, and seal holder are inserted into the cylinder sequentially one by one, then each component can be installed individually with proper positioning, but the installation time and labor effort increase significantly
Solution Approach 1:
The patent combines the rod guide, oil seal, and seal holder into a single integrated assembly unit. The oil seal is mounted on the rod guide, and the seal holder is secured to the rod guide via claws, forming a pre-assembled unit that is inserted into the cylinder as one piece. This merging eliminates the need for sequential installation of three separate components, significantly reducing installation time and labor while maintaining proper positioning and function of each component.
Solution Approach 2:
The rod guide, oil seal, and seal holder are pre-assembled into an integrated unit before insertion into the cylinder. The claws on the rod guide securely hold the seal holder in place during this pre-assembly stage, ensuring proper positioning is established beforehand. This preliminary action of combining components outside the cylinder allows for efficient single-unit installation, avoiding repeated handling and positioning operations that would increase installation time.
2Reliability
If the oil seal is inserted into the rod guide separately, then the sealing function can be ensured, but the assembly process becomes complicated and requires multiple steps
Solution Approach 1:
The patent merges the oil seal with the rod guide by mounting the oil seal directly onto the rod guide structure. This integration ensures the sealing function is maintained while eliminating the need for separate insertion operations. The oil seal remains properly positioned relative to the rod guide, ensuring reliable sealing between the rod and cylinder, while the assembly process is simplified to a single insertion operation.
Solution Approach 2:
The oil seal is nested on the rod guide, forming a compact integrated assembly. This nesting arrangement allows the oil seal to be securely positioned on the rod guide structure, ensuring proper sealing contact with the rod while being carried as part of the single rod guide assembly unit during installation into the cylinder.
3Stability of the object's composition
If the seal holder is stacked on the rod guide separately with a seat and snap ring, then the seal holder can be securely positioned, but the number of components and assembly steps increase
Solution Approach 1:
The patent extracts and eliminates the separate seat and snap ring components from the assembly. Instead, the rod guide itself is designed with integrated claws that directly secure the seal holder in place. This extraction of unnecessary intermediate components simplifies the assembly structure while maintaining secure positioning of the seal holder on the rod guide, reducing both component count and assembly complexity.
Solution Approach 2:
The rod guide serves multiple functions: it provides structural support, guides the rod movement, and secures the seal holder through its integrated claws. This multi-functionality eliminates the need for separate seat and snap ring components that would otherwise be required to position and secure the seal holder, reducing component count while maintaining positioning stability.
Data Source
AI summary
A damper includes a cylinder, an annular rod guide, a rod, an annular oil seal, and an annular seal holder. The cylinder internally forms an action chamber. The rod guide is secured to one side opening of the cylinder. The rod is inserted through an inner peripheral side of the rod guide so as to be axially movable. The oil seal is installed to the action chamber side of the rod guide to be slidably in contact with an outer peripheral surface of the rod. The seal holder supports the oil seal from the action chamber side. The rod guide includes a holding portion to hold the seal holder.