Nested Sliding Rod Insert for Stable Massage Head Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sliding rod structures in massage equipment face challenges in processing difficulty, material selection, connection stability, and cost, necessitating an improved design.
Innovation Solution
A sliding rod nesting structure comprising a plastic sliding rod insert and a metal sliding rod kit, with a threaded connection between the massage head and insert, and a shock-absorbing sleeve for enhanced stability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional sliding rod structure is used, then the structure can provide basic sliding function, but the processing difficulty increases and costs increase
Solution Approach 1:
The patent applies nesting by placing the plastic sliding rod insert inside the metal sliding rod kit, creating a nested structure where the insert is received by the kit. This resolves the contradiction by enabling complex functions (threaded connections, shock absorption) through nested components while keeping individual parts simple to manufacture.
2Ease of manufacture
If a traditional sliding rod structure is used, then the structure can provide basic sliding function, but the material selection becomes more difficult and costs increase
Solution Approach 1:
The patent uses composite materials by combining plastic (for the sliding rod insert) and metal (for the sliding rod kit). This resolves the contradiction by assigning materials based on their optimal properties: plastic for low-cost, easy-to-machine threaded connections, and metal for structural strength and stability, thereby simplifying material selection while enhancing reliability.
3Reliability
If a traditional sliding rod structure is used, then the structure can provide basic sliding function, but the connection stability deteriorates
Solution Approach 1:
The nested structure of the plastic insert within the metal kit provides multiple connection mechanisms (threaded connections in the insert, retention features in the kit) without requiring a single complex component. This resolves the contradiction by distributing complexity across nested simple parts, achieving high connection stability through combined mechanisms.
Solution Approach 2:
The patent segments the sliding rod structure into distinct components (metal kit, plastic insert, shock-absorbing sleeve) that can be manufactured separately with simple processes, then assembled to achieve high connection stability. This resolves the contradiction by avoiding the need for a single complex monolithic structure.
4Ease of manufacture
If a plastic sliding rod insert is used, then processing costs are reduced, but the structural strength may be compromised
Solution Approach 1:
The patent uses composite materials by combining plastic (for the sliding rod insert) and metal (for the sliding rod kit). This resolves the contradiction by assigning materials based on their optimal properties: plastic for low-cost, easy-to-machine threaded connections, and metal for structural strength and stability, thereby simplifying material selection while enhancing reliability.
Solution Approach 2:
The nested structure of the plastic insert within the metal kit allows the plastic component to perform low-stress functions (threaded connections, positioning) while the metal outer structure provides the necessary structural strength and load-bearing capacity, resolving the contradiction between cost and strength.
Data Source
AI summary
A sliding rod nesting structure includes a sliding rod kit, a sliding rod insert, and a massage head, where the sliding rod insert is fixedly connected inside the sliding rod kit, and the massage head is connected to the sliding rod insert. The sliding rod kit is separated from the sliding rod insert. The sliding rod insert is made of plastic, which greatly facilitates the processing. Due to good plasticity and processability of the plastic, various complex connection structures are easy to process on the insert, so that processing costs are reduced. Because both the sliding rod insert and the massage head are made of the plastic, the sliding rod insert is more tightly connected to the massage head. Due to similar material properties, there is good sealing and fitting between contact surfaces of the sliding rod insert and the massage head.