High-Bend Connecting Cable for Massage Gun Piston Motion
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Solution Overview
Problem
Existing massage guns experience frequent wire breakage due to metal fatigue during high-speed piston movement, disrupting electrical connections and reducing the device's service life.
Innovation Solution
A novel massage gun featuring a connecting cable made of ultrafine metal fiber filaments with an insulating outer skin, and an auxiliary connecting part made of weldable conductive material, which is riveted to the cable and welded to the physiotherapy assembly, ensuring durability and maintaining electrical connections during high-speed operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional conductive wires (copper wires) are used in the massage gun, then the device can perform high-speed piston movement, but the wires break easily due to metal fatigue after quick swinging or shaking for a long time
Solution Approach 1:
The patent applies composite materials by combining ultrafine metal fiber filaments (stainless steel or silver) with an insulating material outer skin. This composite structure provides both the flexibility needed for high-speed movement and the durability to resist metal fatigue, solving the contradiction between speed and wire reliability.
Solution Approach 2:
The patent changes the material parameters of the conductive wire by using ultrafine metal fiber filaments with diameters of 1-5 micrometers instead of conventional copper wires. This parameter change in fiber diameter and material composition significantly improves resistance to high-speed bending while maintaining electrical conductivity.
2Reliability
If the connecting cable is made of ultrafine metal fiber filaments to resist high-speed bending, then wire breakage is prevented, but the material requires riveting instead of welding to connect to the auxiliary physiotherapy assembly
Solution Approach 1:
The patent extracts the welding function from the connection process by introducing an auxiliary connecting part made of weldable conductive material (copper). This auxiliary component serves as an intermediary that can be welded to the auxiliary physiotherapy assembly, while the ultrafine metal fiber cable is riveted to this auxiliary part, separating the riveting and welding operations.
Solution Approach 2:
The auxiliary connecting part acts as an intermediary element between the ultrafine metal fiber cable and the auxiliary physiotherapy assembly. It mediates the connection by providing a surface that can be both riveted (to the cable) and welded (to the assembly), thus resolving the manufacturing complexity issue.
3Ease of operation
If a wire bridge structure is provided on the handle to allow the connecting cable to pass through, then the cable routing is simplified, but the structure requires additional components and assembly steps
Solution Approach 1:
The wire bridge structure is integrated into the existing handle design, serving multiple functions: it provides structural support for the handle, creates a pathway for the connecting cable to pass through from the housing to the handle, and maintains the ergonomic design of the massage gun. This multi-functionality reduces the need for separate cable routing components.
Data Source
AI summary
A massage gun includes a gun body, a massage head arranged on the gun body, an auxiliary physiotherapy assembly arranged in the massage head, a main circuit board arranged in the gun body, and a connecting cable electrically connected to the auxiliary physiotherapy assembly and the main circuit board, where the connecting cable is made of a conductive wire resistant to high-speed bending. The connecting cable electrically connected to the auxiliary physiotherapy assembly in the massage head is made of the conductive wire resistant to high-speed bending, which solves the problem that the connecting cable breaks easily when the massage gun performs high-speed piston movement. Because the connecting cable does not break easily, electrical connection can be maintained, thereby prolonging the service life of the massage gun, and reducing use costs.